SEL6
URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 26
NWS STORM PREDICTION CENTER NORMAN OK
1005 PM CST SUN FEB 27 2011
THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF
CENTRAL AND WESTERN ARKANSAS
EASTERN OKLAHOMA
FAR NORTHEAST TEXAS
EFFECTIVE THIS SUNDAY NIGHT AND MONDAY MORNING FROM 1005 PM UNTIL
400 AM CST.
SEVERAL TORNADOES
ISOLATED INTENSE TORNADOES POSSIBLE
SCATTERED DAMAGING WINDS
ISOLATED WIND GUSTS TO 70 MPH POSSIBLE
SCATTERED LARGE HAIL
ISOLATED HAIL TO 2.0 INCHES IN DIAMETER POSSIBLE
THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 105 STATUTE
MILES EAST AND WEST OF A LINE FROM 25 MILES WEST NORTHWEST OF
HARRISON ARKANSAS TO 35 MILES SOUTH SOUTHWEST OF DE QUEEN
ARKANSAS. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU6).
REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR
TORNADOES AND SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH
AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR
THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS
AND POSSIBLE WARNINGS.
OTHER WATCH INFORMATION...CONTINUE...WW 24...WW 25...
DISCUSSION...TSTMS CONTINUE TO INCREASE IN VICINITY OF THE
DRYLINE/PACIFIC COLD FRONT FROM ECNTRL OK INTO FAR NERN TX. EXPECT
A QLCS WILL EVOLVE THROUGH EARLY MORNING MONDAY AND MATURE OVER
WRN/CNTRL AR. ALTHOUGH THE STORM MODE MAY LARGELY BE LINEAR WITH
EMBEDDED BOWS/LEWPS GIVING CORRIDORS OF HIGH WINDS...POTENTIAL
EXISTS FOR A FEW TORNADOES AS 0-1KM SRH REMAINS QUITE HIGH.
AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 2 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
450. MEAN STORM MOTION VECTOR 25040.
...RACY/HART
Sunday, February 27, 2011
Mesoscale Discussion 157
NWS STORM PREDICTION CENTER NORMAN OK
0807 PM CST SUN FEB 27 2011
AREAS AFFECTED...ERN OK...WRN AR...NERN TX
CONCERNING...SEVERE POTENTIAL...WATCH LIKELY
VALID 280207Z - 280300Z
00Z NAM/LATEST HRRR CONTINUE TO OFFER THE BEST GUIDANCE THIS EVENING
AND SUGGEST THAT THE DEVELOPING CONVECTION NEAR THE ADVANCING
DRYLINE/PACIFIC FRONT WILL INDEED DEEPEN THIS EVENING. THIS IS IN
RESPONSE TO LARGER-SCALE ASCENT FINALLY SPREADING EWD ATOP THE MOIST
WARM SECTOR EFFECTIVELY WEAKENING INHIBITION.
EXPECT THAT ANY STORM THAT CAN BECOME SUSTAINED WILL BE EMBEDDED IN
200-400 M2/S2...HIGHEST ACROSS NE OK AND ALONG THE OK/AR BORDER.
INDICATIONS ARE THAT THE CELLS WILL BECOME LINEAR QUICKLY WITH
POSSIBLE EMBEDDED BOWS/ROTATING STORMS CAPABLE OF TORNADOES.
OTHERWISE...CORRIDORS OF HIGH WIND MAY EVOLVE ACROSS FAR ERN OK AND
AR LATER THIS EVENING...WITH THE SVR THREAT BACKBUILDING SWWD INTO
FAR NE TX AS WELL.
Saturday, February 26, 2011
Lake Wind Advisory
000
WWUS74 KSHV 262118
NPWSHV
URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE SHREVEPORT LA
318 PM CST SAT FEB 26 2011
...LAKE WIND ADVISORY IN EFFECT FOR THE FOUR STATE REGION FOR SUNDAY...
ARZ050-051-059>061-070>073-LAZ001>006-010>014-017>022-OKZ077-
TXZ096-097-108>112-124>126-136>138-149>153-165>167-270930-
/O.NEW.KSHV.LW.Y.0003.110227T1500Z-110228T0000Z/
SEVIER-HOWARD-LITTLE RIVER-HEMPSTEAD-NEVADA-MILLER-LAFAYETTE-
COLUMBIA-UNION AR-CADDO-BOSSIER-WEBSTER-CLAIBORNE-LINCOLN-
UNION LA-DE SOTO-RED RIVER-BIENVILLE-JACKSON-OUACHITA-SABINE LA-
NATCHITOCHES-WINN-GRANT-CALDWELL-LA SALLE-MCCURTAIN-BOWIE-
FRANKLIN-TITUS-CAMP-MORRIS-CASS-WOOD-UPSHUR-MARION-SMITH-GREGG-
HARRISON-CHEROKEE-RUSK-PANOLA-NACOGDOCHES-SHELBY-ANGELINA-
SAN AUGUSTINE-SABINE TX-
INCLUDING THE CITIES OF...DE QUEEN...NASHVILLE...ASHDOWN...HOPE...
PRESCOTT...TEXARKANA...LEWISVILLE...MAGNOLIA...EL DORADO...
SHREVEPORT...BOSSIER CITY...MINDEN...HOMER...RUSTON...
FARMERVILLE...MANSFIELD...COUSHATTA...BIENVILLE...JONESBORO...
MONROE...MANY...NATCHITOCHES...WINNFIELD...COLFAX...COLUMBIA...
JENA...IDABEL...CLARKSVILLE...MT VERNON...MT PLEASANT...
PITTSBURG...DAINGERFIELD...ATLANTA...QUITMAN...GILMER...
JEFFERSON...TYLER...LONGVIEW...MARSHALL...RUSK...HENDERSON...
CARTHAGE...NACOGDOCHES...CENTER...LUFKIN...SAN AUGUSTINE...
HEMPHILL
318 PM CST SAT FEB 26 2011
...LAKE WIND ADVISORY IN EFFECT FROM 9 AM TO 6 PM CST SUNDAY...
THE NATIONAL WEATHER SERVICE IN SHREVEPORT HAS ISSUED A LAKE WIND
ADVISORY...WHICH IS IN EFFECT FROM 9 AM TO 6 PM CST SUNDAY.
* TIMING: WINDS WILL INCREASE AROUND MID-MORNING AS THE PRESSURE
GRADIENT TIGHTENS AHEAD OF A DEVELOPING LOW ACROSS OKLAHOMA.
* WINDS: EXPECT WINDS TO INCREASE OVER 20 MPH WITH GUSTS TO AROUND
30 MPH.
* IMPACTS: BOATERS ON AREA LAKES SHOULD BE PREPARED FOR CHOPPY
CONDITIONS THROUGH SUNSET.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A LAKE WIND ADVISORY INDICATES THAT WINDS WILL CAUSE ROUGH CHOP
ON AREA LAKES. SMALL BOATS WILL BE ESPECIALLY PRONE TO CAPSIZING.
WWUS74 KSHV 262118
NPWSHV
URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE SHREVEPORT LA
318 PM CST SAT FEB 26 2011
...LAKE WIND ADVISORY IN EFFECT FOR THE FOUR STATE REGION FOR SUNDAY...
ARZ050-051-059>061-070>073-LAZ001>006-010>014-017>022-OKZ077-
TXZ096-097-108>112-124>126-136>138-149>153-165>167-270930-
/O.NEW.KSHV.LW.Y.0003.110227T1500Z-110228T0000Z/
SEVIER-HOWARD-LITTLE RIVER-HEMPSTEAD-NEVADA-MILLER-LAFAYETTE-
COLUMBIA-UNION AR-CADDO-BOSSIER-WEBSTER-CLAIBORNE-LINCOLN-
UNION LA-DE SOTO-RED RIVER-BIENVILLE-JACKSON-OUACHITA-SABINE LA-
NATCHITOCHES-WINN-GRANT-CALDWELL-LA SALLE-MCCURTAIN-BOWIE-
FRANKLIN-TITUS-CAMP-MORRIS-CASS-WOOD-UPSHUR-MARION-SMITH-GREGG-
HARRISON-CHEROKEE-RUSK-PANOLA-NACOGDOCHES-SHELBY-ANGELINA-
SAN AUGUSTINE-SABINE TX-
INCLUDING THE CITIES OF...DE QUEEN...NASHVILLE...ASHDOWN...HOPE...
PRESCOTT...TEXARKANA...LEWISVILLE...MAGNOLIA...EL DORADO...
SHREVEPORT...BOSSIER CITY...MINDEN...HOMER...RUSTON...
FARMERVILLE...MANSFIELD...COUSHATTA...BIENVILLE...JONESBORO...
MONROE...MANY...NATCHITOCHES...WINNFIELD...COLFAX...COLUMBIA...
JENA...IDABEL...CLARKSVILLE...MT VERNON...MT PLEASANT...
PITTSBURG...DAINGERFIELD...ATLANTA...QUITMAN...GILMER...
JEFFERSON...TYLER...LONGVIEW...MARSHALL...RUSK...HENDERSON...
CARTHAGE...NACOGDOCHES...CENTER...LUFKIN...SAN AUGUSTINE...
HEMPHILL
318 PM CST SAT FEB 26 2011
...LAKE WIND ADVISORY IN EFFECT FROM 9 AM TO 6 PM CST SUNDAY...
THE NATIONAL WEATHER SERVICE IN SHREVEPORT HAS ISSUED A LAKE WIND
ADVISORY...WHICH IS IN EFFECT FROM 9 AM TO 6 PM CST SUNDAY.
* TIMING: WINDS WILL INCREASE AROUND MID-MORNING AS THE PRESSURE
GRADIENT TIGHTENS AHEAD OF A DEVELOPING LOW ACROSS OKLAHOMA.
* WINDS: EXPECT WINDS TO INCREASE OVER 20 MPH WITH GUSTS TO AROUND
30 MPH.
* IMPACTS: BOATERS ON AREA LAKES SHOULD BE PREPARED FOR CHOPPY
CONDITIONS THROUGH SUNSET.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A LAKE WIND ADVISORY INDICATES THAT WINDS WILL CAUSE ROUGH CHOP
ON AREA LAKES. SMALL BOATS WILL BE ESPECIALLY PRONE TO CAPSIZING.
Monday, February 21, 2011
CONTINUING SEVERE WEATHER AWARENESS WEEK IN LOUISIANA, ARKANSAS, TEXAS, AND OKLAHOMA ...
PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE SHREVEPORT LA
355 PM CST MON FEB 21 2011
...CONTINUING SEVERE WEATHER AWARENESS WEEK IN LOUISIANA...
ARKANSAS...TEXAS...AND OKLAHOMA...
THIS AFTERNOONS TOPICS ARE DAMAGING WINDS AND HAIL...
LOUISIANA...TEXAS...ARKANSAS AND OKLAHOMA ARE AFFECTED BY THOUSANDS
OF THUNDERSTORMS EVERY YEAR. THE STRONGEST AND MOST DANGEROUS OF
THESE THUNDERSTORMS ARE DEFINED AS SEVERE THUNDERSTORMS. SEVERE
THUNDERSTORMS ARE THUNDERSTORMS WHICH PRODUCE DAMAGING WINDS...LARGE
HAIL AND TORNADOES. A THUNDERSTORM IS SEVERE WHEN IT PRODUCES WINDS
OF AT LEAST 58 MPH...HAIL 1 INCH IN DIAMETER OR LARGER...OR A
TORNADO. SEVERE THUNDERSTORMS CAN OCCUR DURING ANY TIME OF THE YEAR
IN OUR FOUR STATE REGION...BUT ARE MOST COMMON DURING THE SPRING AND
AUTUMN MONTHS.
THUNDERSTORMS ARE CAPABLE OF PRODUCING VERY STRONG WINDS...BUT IT IS
IMPORTANT TO REMEMBER THAT NOT ALL DAMAGING THUNDERSTORM WINDS ARE
CAUSED BY A TORNADO. STRAIGHT LINE WINDS REFER TO WINDS THAT ARE NOT
ASSOCIATED WITH ROTATING WINDS IN A TORNADO. RATHER...THEY MOVE
FORWARD ALONG THE GROUND IN UNIDIRECTIONAL FASHION.
ONE FORM OF STRAIGHT LINE WINDS...THE DOWNBURST...IS A STRONG
DOWNDRAFT OF AIR THAT ACCELERATES TOWARD THE GROUND IN A
THUNDERSTORM. ONCE NEAR THE GROUND...THE DOWNDRAFT CAN NO LONGER
DESCEND AND THEREFORE RADIATES OUTWARD IN ALL DIRECTIONS...PRODUCING
A SUDDEN RUSH OF DAMAGING WINDS AT THE SURFACE. TWO TYPES OF
DOWNBURSTS EXIST...THE MICROBURST AND THE MACROBURST. THE MICROBURST
IS A SHORT LIVED EVENT AND OF GREAT CONCERN TO THE AVIATION
COMMUNITY. IT PRODUCES STRONG WINDS IN AN AREA LESS THAN 2.5 MILES IN
DIAMETER. IN CONTRAST...MACROBURSTS ARE LONGER LIVED AND CAPABLE OF
PRODUCING EXTENSIVE WIND DAMAGE ACROSS AREAS SEVERAL MILES IN
DIAMETER.
STRAIGHT LINE THUNDERSTORM WINDS OCCASIONALLY REACH SPEEDS IN EXCESS
OF 100 MPH. THESE WINDS MAY BE INTENSE ENOUGH TO UPROOT TREES AND
PRODUCE SUBSTANTIAL DAMAGE...IF NOT COMPLETE DESTRUCTION...TO
BUILDINGS. IF THESE WINDS OCCUR IN CONJUNCTION WITH LARGE HAIL...THE
DAMAGE WILL LIKELY BE EVEN MORE EXTENSIVE.
HAIL THAT IS 1 INCH IN DIAMETER (AS BIG AROUND AS A QUARTER) OR
LARGER IS CONSIDERED SEVERE. HAIL IS DEFINED AS PRECIPITATION IN THE
FORM OF LUMPS OR CHUNKS OF ICE THAT DEVELOP INSIDE STRONGER
THUNDERSTORMS. HAILSTONES ARE USUALLY OVAL SHAPED OR ROUND...BUT CAN
BE ALSO BE SPIKY IN APPEARANCE. HAIL CAN RANGE IN SIZE FROM PEA
SIZE...TO GREATER THAN SOFTBALL SIZE. THE LARGEST HAILSTONE ON RECORD
IN THE UNITED STATES FELL AT AURORA...NEBRASKA ON JUNE 22...2003.
THIS MASSIVE STONE MEASURED 18.75 INCHES IN CIRCUMFERENCE...AND OVER
7 INCHES IN DIAMETER.
HAIL FALLS TO EARTH AT SPEEDS APPROACHING 100 MPH AND CAN CAUSE
IMMENSE DAMAGE TO BUILDINGS...AUTOMOBILES AND VEGETATION. ANNUALLY...
HAIL STORMS CAUSE MORE THAN ONE BILLION DOLLARS IN DAMAGE ACROSS THE
ENTIRE UNITED STATES. NO PART OF THE FOUR STATE REGION IS IMMUNE TO
THE DANGERS OF LARGE HAIL. ALTHOUGH BEING STRUCK BY HAIL IS RARELY
FATAL...SEVERAL DOZEN PEOPLE ARE SERIOUSLY INJURED EACH YEAR IN
HAILSTORMS.
TO PROTECT YOURSELF AND YOUR PROPERTY FROM DAMAGING WINDS AND HAIL
ASSOCIATED WITH A THUNDERSTORM...IT IS IMPORTANT TO STAY ABREAST OF
THE LATEST WEATHER CONDITIONS. STAYING UPDATED THROUGH NOAA WEATHER
RADIO FROM THE NATIONAL WEATHER SERVICE...AS WELL AS MONITORING
TELEVISION...RADIO AND THE INTERNET...WILL HELP YOU BE BETTER
PREPARED FOR THE DANGERS ASSOCIATED WITH ANY SEVERE THUNDERSTORMS IN
YOUR AREA.
TREAT STRAIGHT LINE WIND EVENTS THE SAME AS YOU WOULD AN APPROACHING
TORNADO. SEEK SHELTER IN A REINFORCED BUILDING...PREFERABLY ON THE
LOWEST FLOOR...IN AN INTERIOR ROOM OR CLOSET AND AWAY FROM ANY
WINDOWS. ALWAYS COVER YOUR HEAD TO PROTECT AGAINST THE IMPACT OF
FLYING DEBRIS. IF YOU ENCOUNTER HAIL WHILE DRIVING...TURN AROUND. YOU
MAY BE DRIVING INTO THE CORE OF A THUNDERSTORM...WHICH IS WHERE
TORNADOES FORM. REPORT HAIL OR WIND DAMAGE TO LAW ENFORCEMENT AS SOON
AS IT IS SAFE TO DO SO AND SEEK AN ALTERNATE ROUTE.
THE NATIONAL WEATHER SERVICE WOULD LIKE TO THANK EVERYONE INVOLVED IN
MAKING SEVERE WEATHER AWARENESS WEEK A SUCCESS.
&&
NATIONAL WEATHER SERVICE SHREVEPORT LA
355 PM CST MON FEB 21 2011
...CONTINUING SEVERE WEATHER AWARENESS WEEK IN LOUISIANA...
ARKANSAS...TEXAS...AND OKLAHOMA...
THIS AFTERNOONS TOPICS ARE DAMAGING WINDS AND HAIL...
LOUISIANA...TEXAS...ARKANSAS AND OKLAHOMA ARE AFFECTED BY THOUSANDS
OF THUNDERSTORMS EVERY YEAR. THE STRONGEST AND MOST DANGEROUS OF
THESE THUNDERSTORMS ARE DEFINED AS SEVERE THUNDERSTORMS. SEVERE
THUNDERSTORMS ARE THUNDERSTORMS WHICH PRODUCE DAMAGING WINDS...LARGE
HAIL AND TORNADOES. A THUNDERSTORM IS SEVERE WHEN IT PRODUCES WINDS
OF AT LEAST 58 MPH...HAIL 1 INCH IN DIAMETER OR LARGER...OR A
TORNADO. SEVERE THUNDERSTORMS CAN OCCUR DURING ANY TIME OF THE YEAR
IN OUR FOUR STATE REGION...BUT ARE MOST COMMON DURING THE SPRING AND
AUTUMN MONTHS.
THUNDERSTORMS ARE CAPABLE OF PRODUCING VERY STRONG WINDS...BUT IT IS
IMPORTANT TO REMEMBER THAT NOT ALL DAMAGING THUNDERSTORM WINDS ARE
CAUSED BY A TORNADO. STRAIGHT LINE WINDS REFER TO WINDS THAT ARE NOT
ASSOCIATED WITH ROTATING WINDS IN A TORNADO. RATHER...THEY MOVE
FORWARD ALONG THE GROUND IN UNIDIRECTIONAL FASHION.
ONE FORM OF STRAIGHT LINE WINDS...THE DOWNBURST...IS A STRONG
DOWNDRAFT OF AIR THAT ACCELERATES TOWARD THE GROUND IN A
THUNDERSTORM. ONCE NEAR THE GROUND...THE DOWNDRAFT CAN NO LONGER
DESCEND AND THEREFORE RADIATES OUTWARD IN ALL DIRECTIONS...PRODUCING
A SUDDEN RUSH OF DAMAGING WINDS AT THE SURFACE. TWO TYPES OF
DOWNBURSTS EXIST...THE MICROBURST AND THE MACROBURST. THE MICROBURST
IS A SHORT LIVED EVENT AND OF GREAT CONCERN TO THE AVIATION
COMMUNITY. IT PRODUCES STRONG WINDS IN AN AREA LESS THAN 2.5 MILES IN
DIAMETER. IN CONTRAST...MACROBURSTS ARE LONGER LIVED AND CAPABLE OF
PRODUCING EXTENSIVE WIND DAMAGE ACROSS AREAS SEVERAL MILES IN
DIAMETER.
STRAIGHT LINE THUNDERSTORM WINDS OCCASIONALLY REACH SPEEDS IN EXCESS
OF 100 MPH. THESE WINDS MAY BE INTENSE ENOUGH TO UPROOT TREES AND
PRODUCE SUBSTANTIAL DAMAGE...IF NOT COMPLETE DESTRUCTION...TO
BUILDINGS. IF THESE WINDS OCCUR IN CONJUNCTION WITH LARGE HAIL...THE
DAMAGE WILL LIKELY BE EVEN MORE EXTENSIVE.
HAIL THAT IS 1 INCH IN DIAMETER (AS BIG AROUND AS A QUARTER) OR
LARGER IS CONSIDERED SEVERE. HAIL IS DEFINED AS PRECIPITATION IN THE
FORM OF LUMPS OR CHUNKS OF ICE THAT DEVELOP INSIDE STRONGER
THUNDERSTORMS. HAILSTONES ARE USUALLY OVAL SHAPED OR ROUND...BUT CAN
BE ALSO BE SPIKY IN APPEARANCE. HAIL CAN RANGE IN SIZE FROM PEA
SIZE...TO GREATER THAN SOFTBALL SIZE. THE LARGEST HAILSTONE ON RECORD
IN THE UNITED STATES FELL AT AURORA...NEBRASKA ON JUNE 22...2003.
THIS MASSIVE STONE MEASURED 18.75 INCHES IN CIRCUMFERENCE...AND OVER
7 INCHES IN DIAMETER.
HAIL FALLS TO EARTH AT SPEEDS APPROACHING 100 MPH AND CAN CAUSE
IMMENSE DAMAGE TO BUILDINGS...AUTOMOBILES AND VEGETATION. ANNUALLY...
HAIL STORMS CAUSE MORE THAN ONE BILLION DOLLARS IN DAMAGE ACROSS THE
ENTIRE UNITED STATES. NO PART OF THE FOUR STATE REGION IS IMMUNE TO
THE DANGERS OF LARGE HAIL. ALTHOUGH BEING STRUCK BY HAIL IS RARELY
FATAL...SEVERAL DOZEN PEOPLE ARE SERIOUSLY INJURED EACH YEAR IN
HAILSTORMS.
TO PROTECT YOURSELF AND YOUR PROPERTY FROM DAMAGING WINDS AND HAIL
ASSOCIATED WITH A THUNDERSTORM...IT IS IMPORTANT TO STAY ABREAST OF
THE LATEST WEATHER CONDITIONS. STAYING UPDATED THROUGH NOAA WEATHER
RADIO FROM THE NATIONAL WEATHER SERVICE...AS WELL AS MONITORING
TELEVISION...RADIO AND THE INTERNET...WILL HELP YOU BE BETTER
PREPARED FOR THE DANGERS ASSOCIATED WITH ANY SEVERE THUNDERSTORMS IN
YOUR AREA.
TREAT STRAIGHT LINE WIND EVENTS THE SAME AS YOU WOULD AN APPROACHING
TORNADO. SEEK SHELTER IN A REINFORCED BUILDING...PREFERABLY ON THE
LOWEST FLOOR...IN AN INTERIOR ROOM OR CLOSET AND AWAY FROM ANY
WINDOWS. ALWAYS COVER YOUR HEAD TO PROTECT AGAINST THE IMPACT OF
FLYING DEBRIS. IF YOU ENCOUNTER HAIL WHILE DRIVING...TURN AROUND. YOU
MAY BE DRIVING INTO THE CORE OF A THUNDERSTORM...WHICH IS WHERE
TORNADOES FORM. REPORT HAIL OR WIND DAMAGE TO LAW ENFORCEMENT AS SOON
AS IT IS SAFE TO DO SO AND SEEK AN ALTERNATE ROUTE.
THE NATIONAL WEATHER SERVICE WOULD LIKE TO THANK EVERYONE INVOLVED IN
MAKING SEVERE WEATHER AWARENESS WEEK A SUCCESS.
&&
Day 4 Outlook
ACUS48 KWNS 210953
SPC AC 210953
DAY 4-8 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0353 AM CST MON FEB 21 2011
VALID 241200Z - 011200Z
...DISCUSSION...
AN OUTBREAK OF SEVERE THUNDERSTORMS APPEARS LIKELY ON THU/D4 FROM
ERN OK/NERN TX EWD ACROSS MUCH OF AR...SRN MO...NRN MS...CNTRL AND
WRN KY AND TN...AND POSSIBLY CONTINUING INTO FRI/D5 ACROSS PORTIONS
OF THE MID ATLANTIC STATES.
MODELS ARE IN GOOD AGREEMENT IN DEPICTING A POTENT UPPER SHORTWAVE
TROUGH MOVING EWD ACROSS THE SRN PLAINS DURING THE DAY THU WITH A
SURFACE LOW DEEPENING FROM ROUGHLY OK AT 12Z TO MO/AR BY 00Z. AHEAD
OF THE DEEPENING LOW...A RELATIVELY WIDE MOIST/WARM SECTOR WILL BE
IN PLACE WITH BOUNDARY LAYER DEWPOINTS IN THE 60S F. STRONG FORCING
WITH THE UPPER TROUGH...COOLING MID LEVEL TEMPERATURES AND THE
PRESENCE OF VERY STRONG WIND PROFILES SUGGEST SIGNIFICANT SEVERE
WEATHER WILL BE POSSIBLE...INCLUDING TORNADOES AND VERY STRONG WINDS
IN ADDITION TO HAIL.
THE GREATEST THREAT AREA ON THU WILL LIKELY BE NEAR AND JUST S OF
THE SURFACE LOW TRACK DURING THE LATE AFTERNOON AND EVENING HOURS.
LATEST ITERATION OF NUMERICAL GUIDANCE SUGGESTS THAT THIS WOULD
INCLUDE MUCH OF AR...SRN MO...FAR NRN MS...AND MUCH OF WRN KY AND
TN.
SOME SEVERE THREAT WILL LIKELY PERSIST OVERNIGHT AND CONTINUE INTO
FRI/D5...ALTHOUGH INSTABILITY AND MOISTURE WILL BE LESS. AS
SUCH...THE EXPECTED SEVERE THREAT FRI WILL LIKELY BE COMPRISED OF
DAMAGING WIND GUSTS ASSOCIATED WITH AN INTENSE COLD FRONT AND A
STRONGLY FORCED LINE OF STORMS...FROM THE DELMARVA SWD ACROSS VA.
THESE STORMS WOULD LIKELY HAVE LITTLE INSTABILITY TO WORK WITH...AND
WOULD BE RELATIVELY LOW TOPPED...BUT A STRONG SURFACE PRESSURE
FALL/RISE COUPLET WOULD ENHANCE WIND POTENTIAL WITH THE LINE.
AFTER THE D4 TO D5 TIME FRAME...MODEL SOLUTIONS DIVERGE RAPIDLY.
..JEWELL.. 02/21/2011
NOAA Weather Radio
PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE SHREVEPORT LA
342 AM CST MON FEB 21 2011
...CONTINUING SEVERE WEATHER AWARENESS WEEK IN LOUISIANA...
ARKANSAS...TEXAS...AND OKLAHOMA...
TODAYS TOPIC IS NOAA WEATHER RADIO...
NOAA WEATHER RADIO IS THE VOICE OF THE NATIONAL WEATHER SERVICE. THE
NATIONAL WEATHER SERVICE BROADCASTS UNINTERRUPTED WEATHER INFORMATION
DIRECTLY TO THE PUBLIC 24 HOURS PER DAY. NOAA WEATHER RADIO IS THE
FASTEST WAY TO RECEIVE WARNINGS OF HAZARDOUS AND POTENTIALLY DEADLY
WEATHER EVENTS. THUS...NOAA WEATHER RADIO SAVES HUNDREDS OF LIVES
EACH YEAR.
NOAA WEATHER RADIO BROADCASTS ON SEVEN VHF FREQUENCIES RANGING FROM
162.400 TO 162.550 MEGAHERTZ. THESE BROADCASTS CAN GENERALLY BE
RECEIVED UP TO 40 MILES FROM THE TRANSMITTER SITE...BUT CAN VARY
DEPENDING ON THE QUALITY OF YOUR RECEIVER...LOCAL TERRAIN AND
ATMOSPHERIC CONDITIONS.
NOAA WEATHER RADIO PROGRAMMING INCLUDES...
...WEATHER STATEMENTS...WATCHES AND WARNINGS.
...LOCATION...MOVEMENT AND IMPACTS OF THREATENING WEATHER.
...CURRENT WEATHER CONDITIONS AND LOCAL FORECASTS.
...CIVIL EMERGENCY MESSAGES AND AMBER ALERTS.
...LOCAL CLIMATE DATA.
WATCHES AND WARNINGS ARE TONE ALERTED TO ACTIVATE THE NOAA WEATHER
RADIO RECEIVERS WITH A BUILT IN TONE ALERT FEATURE.
THE NATIONAL WEATHER SERVICE RECOMMENDS THAT EVERYONE HAVE A NOAA
WEATHER RADIO IN THEIR HOME OR BUSINESS. THESE RADIOS MAY BE
PURCHASED AT YOUR LOCAL ELECTRONIC STORES...ANY DEPARTMENT STORE AND
EVEN ON THE INTERNET. IN THE FUTURE...NOAA WEATHER RADIO TECHNOLOGY
WILL EVEN BE INCORPORATED INTO SOME NEW TELEVISIONS AND ON CELL
PHONES.
THE NATIONAL WEATHER SERVICE WOULD LIKE TO THANK EVERYONE INVOLVED IN
MAKING SEVERE WEATHER AWARENESS WEEK A SUCCESS.
NATIONAL WEATHER SERVICE SHREVEPORT LA
342 AM CST MON FEB 21 2011
...CONTINUING SEVERE WEATHER AWARENESS WEEK IN LOUISIANA...
ARKANSAS...TEXAS...AND OKLAHOMA...
TODAYS TOPIC IS NOAA WEATHER RADIO...
NOAA WEATHER RADIO IS THE VOICE OF THE NATIONAL WEATHER SERVICE. THE
NATIONAL WEATHER SERVICE BROADCASTS UNINTERRUPTED WEATHER INFORMATION
DIRECTLY TO THE PUBLIC 24 HOURS PER DAY. NOAA WEATHER RADIO IS THE
FASTEST WAY TO RECEIVE WARNINGS OF HAZARDOUS AND POTENTIALLY DEADLY
WEATHER EVENTS. THUS...NOAA WEATHER RADIO SAVES HUNDREDS OF LIVES
EACH YEAR.
NOAA WEATHER RADIO BROADCASTS ON SEVEN VHF FREQUENCIES RANGING FROM
162.400 TO 162.550 MEGAHERTZ. THESE BROADCASTS CAN GENERALLY BE
RECEIVED UP TO 40 MILES FROM THE TRANSMITTER SITE...BUT CAN VARY
DEPENDING ON THE QUALITY OF YOUR RECEIVER...LOCAL TERRAIN AND
ATMOSPHERIC CONDITIONS.
NOAA WEATHER RADIO PROGRAMMING INCLUDES...
...WEATHER STATEMENTS...WATCHES AND WARNINGS.
...LOCATION...MOVEMENT AND IMPACTS OF THREATENING WEATHER.
...CURRENT WEATHER CONDITIONS AND LOCAL FORECASTS.
...CIVIL EMERGENCY MESSAGES AND AMBER ALERTS.
...LOCAL CLIMATE DATA.
WATCHES AND WARNINGS ARE TONE ALERTED TO ACTIVATE THE NOAA WEATHER
RADIO RECEIVERS WITH A BUILT IN TONE ALERT FEATURE.
THE NATIONAL WEATHER SERVICE RECOMMENDS THAT EVERYONE HAVE A NOAA
WEATHER RADIO IN THEIR HOME OR BUSINESS. THESE RADIOS MAY BE
PURCHASED AT YOUR LOCAL ELECTRONIC STORES...ANY DEPARTMENT STORE AND
EVEN ON THE INTERNET. IN THE FUTURE...NOAA WEATHER RADIO TECHNOLOGY
WILL EVEN BE INCORPORATED INTO SOME NEW TELEVISIONS AND ON CELL
PHONES.
THE NATIONAL WEATHER SERVICE WOULD LIKE TO THANK EVERYONE INVOLVED IN
MAKING SEVERE WEATHER AWARENESS WEEK A SUCCESS.
Sunday, February 20, 2011
Severe Weather Awareness
000
NOUS44 KSHV 202205
PNSSHV
ARZ050-051-059>061-070>073-LAZ001>006-010>014-017>022-OKZ077-TXZ096-
097-108>112-124>126-136>138-149>153-165>167-211100-
PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE SHREVEPORT LA
404 PM CST SUN FEB 20 2011
...CONTINUING SEVERE WEATHER AWARENESS WEEK...
...DIFFERENCES BETWEEN A WATCH AND A WARNING...
A SEVERE THUNDERSTORM WATCH OR A TORNADO WATCH IS ISSUED WHEN
ATMOSPHERIC CONDITIONS ARE FAVORABLE FOR THE DEVELOPMENT OF SEVERE
WEATHER.
SPECIFICALLY...
A SEVERE THUNDERSTORM WATCH IS ISSUED WHEN THE PRIMARY CONCERN IS FOR
LARGE HAIL AND/OR DAMAGING THUNDERSTORM WINDS. 1 INCH (QUARTER-
SIZED) OR LARGER HAIL IS CONSIDERED SEVERE, AS IS THUNDERSTORM WIND
GUSTS OF 58 MPH OR STRONGER.
A TORNADO WATCH IS ISSUED WHEN SEVERE WEATHER IS EXPECTED, WHICH ALSO
INCLUDES THE POSSIBILITY OF LARGE AND/OR MULTIPLE TORNADOES.
AFTER COORDINATING WITH AFFECTED NATIONAL WEATHER SERVICE FORECAST
OFFICES, THE WATCH IS ISSUED BY THE STORM PREDICTION CENTER IN
NORMAN, OKLAHOMA. THE TYPICAL SIZE OF A WATCH AREA IS TWENTY FIVE
THOUSAND SQUARE MILES AND USUALLY TAKES THE SHAPE OF A FOUR-SIDED
POLYGON. THE WATCH TYPICALLY LASTS FOR SIX TO EIGHT HOURS. WHEN A
WATCH IS ISSUED, IT IS IMPORTANT TO BE ON THE ALERT FOR THREATENING
WEATHER AND BE PREPARED TO MOVE QUICKLY TO SAFETY WHEN SEVERE WEATHER
DEVELOPS.
SEVERE THUNDERSTORM AND TORNADO WARNINGS ARE ISSUED BY LOCAL NATIONAL
WEATHER SERVICE FORECAST OFFICES WHEN SEVERE THUNDERSTORMS OR
TORNADOES ARE IMMINENT, EITHER AS INDICATED BY DOPPLER RADAR OR WHEN
OBSERVED & REPORTED BY RELIABLE SOURCES SUCH AS SKYWARN SPOTTERS. A
WARNING USUALLY COVERS A PORTION OF ONE TO SEVERAL COUNTIES OR
PARISHES AND NORMALLY LASTS FOR AN HOUR OR LESS. PAY CLOSE
ATTENTION TO THE INFORMATION CONTAINED IN THE WARNING AND TAKE
IMMEDIATE ACTION TO PROTECT YOURSELVES. WARNINGS INCLUDE IMPORTANT
DETAILS SUCH AS WHICH LOCATIONS ARE AT GREATEST RISK AND WHAT
MEASURES YOU SHOULD TAKE TO PROTECT YOURSELF.
REMEMBER: IN A WATCH...WATCH THE SKY. IN A WARNING...TAKE ACTION TO
PROTECT YOURSELF.
NOUS44 KSHV 202205
PNSSHV
ARZ050-051-059>061-070>073-LAZ001>006-010>014-017>022-OKZ077-TXZ096-
097-108>112-124>126-136>138-149>153-165>167-211100-
PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE SHREVEPORT LA
404 PM CST SUN FEB 20 2011
...CONTINUING SEVERE WEATHER AWARENESS WEEK...
...DIFFERENCES BETWEEN A WATCH AND A WARNING...
A SEVERE THUNDERSTORM WATCH OR A TORNADO WATCH IS ISSUED WHEN
ATMOSPHERIC CONDITIONS ARE FAVORABLE FOR THE DEVELOPMENT OF SEVERE
WEATHER.
SPECIFICALLY...
A SEVERE THUNDERSTORM WATCH IS ISSUED WHEN THE PRIMARY CONCERN IS FOR
LARGE HAIL AND/OR DAMAGING THUNDERSTORM WINDS. 1 INCH (QUARTER-
SIZED) OR LARGER HAIL IS CONSIDERED SEVERE, AS IS THUNDERSTORM WIND
GUSTS OF 58 MPH OR STRONGER.
A TORNADO WATCH IS ISSUED WHEN SEVERE WEATHER IS EXPECTED, WHICH ALSO
INCLUDES THE POSSIBILITY OF LARGE AND/OR MULTIPLE TORNADOES.
AFTER COORDINATING WITH AFFECTED NATIONAL WEATHER SERVICE FORECAST
OFFICES, THE WATCH IS ISSUED BY THE STORM PREDICTION CENTER IN
NORMAN, OKLAHOMA. THE TYPICAL SIZE OF A WATCH AREA IS TWENTY FIVE
THOUSAND SQUARE MILES AND USUALLY TAKES THE SHAPE OF A FOUR-SIDED
POLYGON. THE WATCH TYPICALLY LASTS FOR SIX TO EIGHT HOURS. WHEN A
WATCH IS ISSUED, IT IS IMPORTANT TO BE ON THE ALERT FOR THREATENING
WEATHER AND BE PREPARED TO MOVE QUICKLY TO SAFETY WHEN SEVERE WEATHER
DEVELOPS.
SEVERE THUNDERSTORM AND TORNADO WARNINGS ARE ISSUED BY LOCAL NATIONAL
WEATHER SERVICE FORECAST OFFICES WHEN SEVERE THUNDERSTORMS OR
TORNADOES ARE IMMINENT, EITHER AS INDICATED BY DOPPLER RADAR OR WHEN
OBSERVED & REPORTED BY RELIABLE SOURCES SUCH AS SKYWARN SPOTTERS. A
WARNING USUALLY COVERS A PORTION OF ONE TO SEVERAL COUNTIES OR
PARISHES AND NORMALLY LASTS FOR AN HOUR OR LESS. PAY CLOSE
ATTENTION TO THE INFORMATION CONTAINED IN THE WARNING AND TAKE
IMMEDIATE ACTION TO PROTECT YOURSELVES. WARNINGS INCLUDE IMPORTANT
DETAILS SUCH AS WHICH LOCATIONS ARE AT GREATEST RISK AND WHAT
MEASURES YOU SHOULD TAKE TO PROTECT YOURSELF.
REMEMBER: IN A WATCH...WATCH THE SKY. IN A WARNING...TAKE ACTION TO
PROTECT YOURSELF.
Day 4-8 Convective Outlook Issued on Feb 20, 2011
ZCZC SPCSWOD48 ALLACUS48 KWNS 200947
SPC AC 200947
DAY 4-8 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0347 AM CST SUN FEB 20 2011
VALID 231200Z - 281200Z
...DISCUSSION...
AN ACTIVE PATTERN WILL PERSIST THROUGH THE PERIOD WITH THE POTENTIAL
FOR A SIGNIFICANT SEVERE WEATHER OUTBREAK ON THU/D5.
ON WED/D4...MODEL CONSENSUS HAS A BROAD BELT OF SWLY FLOW ALOFT FROM
NRN MEXICO ACROSS THE CNTRL AND ERN U.S...AHEAD OF AN UPPER TROUGH
AXIS THAT IS FORECAST TO BE IN THE VICINITY OF THE BAJA CA/SRN CA
COAST WED MORNING. WELL AHEAD OF THIS FEATURE...LOW LEVEL MOISTURE
WILL BEGIN TO STREAM NWD OFF THE GULF OF MEXICO AS A LARGE SURFACE
HIGH OVER THE ERN STATES GRADUALLY SHIFTS OFFSHORE.
BY THU MORNING...A SURFACE LOW IS FORECAST TO BE SOMEWHERE ACROSS
NWRN TX OR CNTRL OK WITH BOUNDARY LAYER DEWPOINTS AS HIGH AS 60F UP
TO THE LOW CENTER....AND UP TO A WARM FRONT THAT WILL EXTEND EWD
ACROSS NRN OK/AR OR PERHAPS SRN MO. A SURFACE LOW AND POTENT UPPER
LEVEL JET STREAK WILL THEN CONTINUE EWD ACROSS THE LOWER MS AND INTO
THE TN/OH VALLEYS BY 00Z.
UPPER LEVEL COOLING AND A PLUME OF STEEP DEEP LAYER LAPSE RATES WILL
OVERSPREAD THE WARM SECTOR...CREATING A VERY UNSTABLE SITUATION.
ALTHOUGH THE EXACT GEOMETRY OF THE TROUGH MAY NOT BE WELL HANDLED
THIS FAR IN ADVANCE...THE CURRENT MODEL DEPICTION WOULD INDICATE THE
POTENTIAL FOR NUMEROUS SUPERCELLS ALONG THE DRYLINE/COLD
FRONT...RATHER THAN A MORE LINEAR STORM MODE. IN THIS SCENARIO...A
SUBSTANTIAL TORNADO THREAT COULD MATERIALIZE BY AFTERNOON AND
EVENING.
BY FRI/D6...A SEVERE THREAT OF SOME FORM MAY REMAIN ALONG THE COLD
FRONT...AS IT APPROACHES THE ERN SEABOARD...BUT TIMING OF THE FRONT
AND PREDICTABILITY BECOME TOO LOW FOR ANY ADDITIONAL SEVERE AREAS.
..JEWELL.. 02/20/2011
THE GOVERNORS OF LOUISIANA, ARKANSAS, OKLAHOMA, AND TEXAS HAVE PROCLAIMED THE WEEK OF FEBRUARY 20TH THROUGH THE 25TH, 2011, AS SEVERE WEATHER AWARENESS WEEK FOR THEIR RESPECTIVE STATES .
000
NOUS44 KSHV 200949
PNSSHV
ARZ050-051-059>061-070>073-LAZ001>006-010>014-017>022-OKZ077-TXZ096-
097-108>112-124>126-136>138-149>153-165>167-202200-
PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE SHREVEPORT LA
348 AM CST SUN FEB 20 2011
...THE GOVERNORS OF LOUISIANA...ARKANSAS...OKLAHOMA...AND TEXAS HAVE
PROCLAIMED THE WEEK OF FEBRUARY 20TH THROUGH THE 25TH...2011...AS
SEVERE WEATHER AWARENESS WEEK FOR THEIR RESPECTIVE STATES...
SPRING IS THE SEASON WHEN SEVERE WEATHER IS MOST LIKELY TO STRIKE.
SEVERE THUNDERSTORMS CAN FORM IN A MATTER OF MINUTES...BRINGING LARGE
HAIL...DAMAGING WINDS...DANGEROUS TORNADOES...AND DEADLY LIGHTNING.
THESE STORMS CAN ALSO PRODUCE VERY HEAVY RAIN...DROPPING SEVERAL
INCHES IN THE SPACE OF AN HOUR...AND CAUSING DEADLY FLASH FLOODING.
SEVERE WEATHER AWARENESS WEEK IS THE TIME TO TALK WITH THE PUBLIC
ABOUT HOW WE CAN PREPARE FOR THESE SEVERE WEATHER RISKS. THIS
INCLUDES HAVING AN EMERGENCY ACTION PLAN AT HOME...SCHOOL...AND THE
OFFICE. AN IMPORTANT PART OF THIS PLAN IS TO MAKE SURE EVERYONE
UNDERSTANDS IT...AND IS READY TO PUT IT INTO ACTION WHEN NECESSARY.
DURING SEVERE WEATHER AWARENESS WEEK...THE NATIONAL WEATHER
SERVICE WILL REVIEW THE MOST IMPORTANT ASPECTS OF SEVERE WEATHER...
AND HIGHLIGHT SAFETY RULES. SPECIAL PUBLIC INFORMATION STATEMENTS
WILL BE ISSUED EACH DAY...AS INDICATED BY THE FOLLOWING LIST.
NEWSPAPERS AND SAFETY ORGANIZATIONS CAN HELP TO PROMOTE AWARENESS...
BY PRINTING AND DISTRIBUTING THE SAFETY RULES. THE BROADCAST MEDIA
CAN ALSO HELP TO GET THIS INFORMATION TO THE PUBLIC.
SUNDAY...MORNING...INTRODUCTION TO SEVERE WEATHER WEEK.
AFTERNOON...NATIONAL WEATHER SERVICE WATCHES AND WARNINGS.
MONDAY...MORNING...NOAA WEATHER RADIO ALL HAZARDS.
AFTERNOON...DAMAGING WIND AND HAIL.
TUESDAY...MORNING...DROUGHT AND WILDFIRES.
AFTERNOON...TORNADOES AND TORNADO SAFETY.
WEDESDAY...MORNING...LIGHTNING FACTS AND THE 30 30 RULE.
AFTERNOON...SEVERE WEATHER SAFETY FOR BOATERS.
THURSDAY...MORNING...TURN AROUND...DON'T DROWN.
AFTERNOON...FLOOD AND FLASH FLOOD SAFETY.
FRIDAY...MORNING...AMATEUR RADIO AND SKYWARN SPOTTERS.
AFTERNOON...REPORTING SEVERE WEATHER TO THE NATIONAL
WEATHER SERVICE.
THE FOUR STATE REGION RECORDED 25 TORNADOES IN 2010 WHICH IS FAR
LESS THAN THE 83 TORNADOES WHICH OCCURRED IN 2009...HOWEVER 2010 DID
INCLUDE THE STRONGEST TORNADO TO STRIKE THE REGION SINCE THE 1999
BENTON TORNADO. ON NOVEMBER 29...2010...AN EF4 TORNADO TOUCHED DOWN
WEST OF THE COMMUNITY OF ATLANTA LOUISIANA. FORTUNATELY...NO
INJURIES OR FATALITIES OCCURRED. ALTHOUGH THIS WAS A FALL TORNADO...
SOME OF THE LARGEST OUTBREAKS ACROSS THE REGION HAVE OCCURRED IN THE
SPRING...INCLUDING THE APRIL 2009...APRIL 2000...MAY 1999...AND APRIL
1999 OUTBREAKS WHICH FEATURED NUMEROUS STRONG TO VIOLENT TORNADOES.
THE 25 TORNADOES CAN BE BROKEN DOWN INTO THE FOLLOWING NUMBERS...1
EF4...1 EF3...1 EF2...4 EF1...18 EF0.
THE NATIONAL WEATHER SERVICE WOULD LIKE TO THANK EVERYONE INVOLVED IN
MAKING SEVERE WEATHER AWARENESS WEEK A SUCCESS.
NOUS44 KSHV 200949
PNSSHV
ARZ050-051-059>061-070>073-LAZ001>006-010>014-017>022-OKZ077-TXZ096-
097-108>112-124>126-136>138-149>153-165>167-202200-
PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE SHREVEPORT LA
348 AM CST SUN FEB 20 2011
...THE GOVERNORS OF LOUISIANA...ARKANSAS...OKLAHOMA...AND TEXAS HAVE
PROCLAIMED THE WEEK OF FEBRUARY 20TH THROUGH THE 25TH...2011...AS
SEVERE WEATHER AWARENESS WEEK FOR THEIR RESPECTIVE STATES...
SPRING IS THE SEASON WHEN SEVERE WEATHER IS MOST LIKELY TO STRIKE.
SEVERE THUNDERSTORMS CAN FORM IN A MATTER OF MINUTES...BRINGING LARGE
HAIL...DAMAGING WINDS...DANGEROUS TORNADOES...AND DEADLY LIGHTNING.
THESE STORMS CAN ALSO PRODUCE VERY HEAVY RAIN...DROPPING SEVERAL
INCHES IN THE SPACE OF AN HOUR...AND CAUSING DEADLY FLASH FLOODING.
SEVERE WEATHER AWARENESS WEEK IS THE TIME TO TALK WITH THE PUBLIC
ABOUT HOW WE CAN PREPARE FOR THESE SEVERE WEATHER RISKS. THIS
INCLUDES HAVING AN EMERGENCY ACTION PLAN AT HOME...SCHOOL...AND THE
OFFICE. AN IMPORTANT PART OF THIS PLAN IS TO MAKE SURE EVERYONE
UNDERSTANDS IT...AND IS READY TO PUT IT INTO ACTION WHEN NECESSARY.
DURING SEVERE WEATHER AWARENESS WEEK...THE NATIONAL WEATHER
SERVICE WILL REVIEW THE MOST IMPORTANT ASPECTS OF SEVERE WEATHER...
AND HIGHLIGHT SAFETY RULES. SPECIAL PUBLIC INFORMATION STATEMENTS
WILL BE ISSUED EACH DAY...AS INDICATED BY THE FOLLOWING LIST.
NEWSPAPERS AND SAFETY ORGANIZATIONS CAN HELP TO PROMOTE AWARENESS...
BY PRINTING AND DISTRIBUTING THE SAFETY RULES. THE BROADCAST MEDIA
CAN ALSO HELP TO GET THIS INFORMATION TO THE PUBLIC.
SUNDAY...MORNING...INTRODUCTION TO SEVERE WEATHER WEEK.
AFTERNOON...NATIONAL WEATHER SERVICE WATCHES AND WARNINGS.
MONDAY...MORNING...NOAA WEATHER RADIO ALL HAZARDS.
AFTERNOON...DAMAGING WIND AND HAIL.
TUESDAY...MORNING...DROUGHT AND WILDFIRES.
AFTERNOON...TORNADOES AND TORNADO SAFETY.
WEDESDAY...MORNING...LIGHTNING FACTS AND THE 30 30 RULE.
AFTERNOON...SEVERE WEATHER SAFETY FOR BOATERS.
THURSDAY...MORNING...TURN AROUND...DON'T DROWN.
AFTERNOON...FLOOD AND FLASH FLOOD SAFETY.
FRIDAY...MORNING...AMATEUR RADIO AND SKYWARN SPOTTERS.
AFTERNOON...REPORTING SEVERE WEATHER TO THE NATIONAL
WEATHER SERVICE.
THE FOUR STATE REGION RECORDED 25 TORNADOES IN 2010 WHICH IS FAR
LESS THAN THE 83 TORNADOES WHICH OCCURRED IN 2009...HOWEVER 2010 DID
INCLUDE THE STRONGEST TORNADO TO STRIKE THE REGION SINCE THE 1999
BENTON TORNADO. ON NOVEMBER 29...2010...AN EF4 TORNADO TOUCHED DOWN
WEST OF THE COMMUNITY OF ATLANTA LOUISIANA. FORTUNATELY...NO
INJURIES OR FATALITIES OCCURRED. ALTHOUGH THIS WAS A FALL TORNADO...
SOME OF THE LARGEST OUTBREAKS ACROSS THE REGION HAVE OCCURRED IN THE
SPRING...INCLUDING THE APRIL 2009...APRIL 2000...MAY 1999...AND APRIL
1999 OUTBREAKS WHICH FEATURED NUMEROUS STRONG TO VIOLENT TORNADOES.
THE 25 TORNADOES CAN BE BROKEN DOWN INTO THE FOLLOWING NUMBERS...1
EF4...1 EF3...1 EF2...4 EF1...18 EF0.
THE NATIONAL WEATHER SERVICE WOULD LIKE TO THANK EVERYONE INVOLVED IN
MAKING SEVERE WEATHER AWARENESS WEEK A SUCCESS.
Thursday, February 17, 2011
Science Shows Planned Area Closure off Georgia and North Florida Not Necessary
Updated scientific data on red snapper populations in the South Atlantic show that the planned area closure for all snapper and grouper species off southern Georgia and northern Florida is no longer needed. As a result, NOAA’s Fisheries Service is seeking public comment on a proposal to repeal the previously approved area closure that is set to go into effect on June 1.
“The latest science suggests that the planned area closure is not necessary for the red snapper population to continue to improve, sparing South Atlantic fishermen and their families from additional economic hardship,,” said Roy Crabtree, southeast regional administrator for NOAA’s Fisheries Service. “By using up-to-date science to manage these valuable fisheries, we will be able to keep this area open to fishing for other snappers and groupers.”
Fisheries managers originally approved the closed area in late 2010, based on 2008 stock assessment information, as a means to reduce unintended catch, or bycatch, of red snapper, the catch and possession of which is forbidden in federal waters of the South Atlantic. The area closure was purposely delayed until June 1 to allow time for the South Atlantic Fishery Management Council to consider the results of the October 2010 red snapper scientific assessment, and determine if changes to the closure area were warranted. The assessment showed that though the red snapper population is still too low and fish are still being removed too quickly, the species is in better condition than the earlier assessment indicated.
Eliminating the planned area closure would not alter the existing prohibition on directed commercial and recreational catch and possession of red snapper in federal waters of the South Atlantic. Repealing the area closure would allow for the continued harvest of 72 species of fish other than red snapper in this area, in accordance with existing regulations.
If not reversed through regulatory action, the 4,827-square mile area closure would take effect June 1 and prohibit commercial and recreational fishing for snappers and groupers between the depths of 98 and 240 feet, from southern Georgia to Cape Canaveral, Fla. Use of black sea bass pots and spearfishing gear would be allowed within the closed area when fishing for species other than red snapper.
“The latest science suggests that the planned area closure is not necessary for the red snapper population to continue to improve, sparing South Atlantic fishermen and their families from additional economic hardship,,” said Roy Crabtree, southeast regional administrator for NOAA’s Fisheries Service. “By using up-to-date science to manage these valuable fisheries, we will be able to keep this area open to fishing for other snappers and groupers.”
Fisheries managers originally approved the closed area in late 2010, based on 2008 stock assessment information, as a means to reduce unintended catch, or bycatch, of red snapper, the catch and possession of which is forbidden in federal waters of the South Atlantic. The area closure was purposely delayed until June 1 to allow time for the South Atlantic Fishery Management Council to consider the results of the October 2010 red snapper scientific assessment, and determine if changes to the closure area were warranted. The assessment showed that though the red snapper population is still too low and fish are still being removed too quickly, the species is in better condition than the earlier assessment indicated.
Eliminating the planned area closure would not alter the existing prohibition on directed commercial and recreational catch and possession of red snapper in federal waters of the South Atlantic. Repealing the area closure would allow for the continued harvest of 72 species of fish other than red snapper in this area, in accordance with existing regulations.
If not reversed through regulatory action, the 4,827-square mile area closure would take effect June 1 and prohibit commercial and recreational fishing for snappers and groupers between the depths of 98 and 240 feet, from southern Georgia to Cape Canaveral, Fla. Use of black sea bass pots and spearfishing gear would be allowed within the closed area when fishing for species other than red snapper.
Tuesday, February 15, 2011
Sunspot 1158 Produces Largest Flare of Solar Cycle 24; CME Headed Toward Earth
Over the past few days, there has been a lot of activity on the Sun. On Sunday, February 13 at 1738 UTC, sunspot 1158 unleashed an M6.6-level blast and on Tuesday, February 15, the same sunspot unleashed an X-class flare, the strongest solar flare in more than four years. On Monday, the solar flux index reached 113, the highest yet in Solar Cycle 24, dropping down to 112 for Tuesday. It is expected to continue to be at least 100 for the next few days.
The source of this activity -- sunspot 1158 -- is growing rapidly (click here to watch a video of the sunspot’s progression over a 48 hour period). Sunspot 1158 is in the Sun’s southern hemisphere, which has been lagging behind the northern hemisphere in activity for Solar Cycle 24. This active region is now more than 100,000 km wide, with at least a dozen Earth-sized dark cores in the group. More Earth-directed eruptions are likely in the hours ahead.
According to Spaceweather.com, Sunday’s eruption produced a loud blast of radio waves that was heard in shortwave receivers. That website reported that a New Mexico amateur radio astronomer recorded these sounds at 19-21 MHz, calling it “some of the strongest radio bursting of the new solar cycle.”
On Tuesday at 1516 UTC, the same sunspot unleashed an X2.2-class flare; X-flares are the strongest type of x-ray flare, and this is the first such eruption of Solar Cycle 24; the last X-class flare was December 13, 2006 (click here to watch a movie of this X-class solar flare). NASA’s Solar Dynamics Observatory (SDO) recorded an intense flash of extreme ultraviolet radiation. The expanding cloud may be seen in this movie from NASA’s STEREO-B spacecraft.
In addition to flashing Earth with UV radiation, data from data from NASA’s Solar Terrestrial Relations Observatory (STEREO) and its Solar Heliospheric Observatory (SOHO) show that the explosion also hurled a coronal mass ejection (CME) toward Earth. Geomagnetic storms are possible when the CME hits the Earth’s magnetic field on or about February 16, and auroras are possible.
What does this mean to radio amateurs? When the CME hits the Earth’s atmosphere, the low bands will be depressed and signals will be weaker the lower the frequency. The absorption rate will be most severe on 160 meters, less on 80 and somewhat better on 40 meters. The maximum usable frequency (MUF) -- the highest frequency by which a radio wave can propagate between given terminals by ionospheric propagation alone, independent of power -- will be lower and auroral propagation on the VHF bands is quite possible.
“Sunspot 1158 is firing off all sorts of flares and causing disruptions to the geomagnetic field,” said H. Ward Silver, N0AX, who edits the ARRL Contest Update. “Depending on how active it remains over the next couple of days, there may be significant impact to HF propagation for the ARRL International DX CW Contest this weekend. The length of the disruption by the CME is unknown. A head-on collision with a lot of plasma will keep things unsettled all weekend, while the recovery from a glancing blow or smaller amounts of plasma may occur relatively quickly. Polar path propagation on Friday morning will be the best indicator of conditions before the contest begins. Those operating on 10 meters at all the multi-multi stations are holding their collective breaths!”
What Is a Solar Flare?
A solar flare occurs when magnetic energy that has built up in the solar atmosphere is suddenly released. Radiation is emitted across virtually the entire electromagnetic spectrum, from radio waves at the long wavelength end, through optical emission to x-rays and gamma rays at the short wavelength end. The amount of energy released is the equivalent of millions of 100-megaton hydrogen bombs exploding at the same time.
Solar flares extend out to the layer of the Sun called the corona. The corona is the outermost atmosphere of the Sun, consisting of highly rarefied gas. This gas normally has a temperature of a few million Kelvins. Inside a flare, the temperature typically reaches 10 or 20 million Kelvins, and can be as high as 100 million degrees Kelvin. The corona is not uniformly bright, but is concentrated around the solar equator in loop-shaped features. These bright loops are located within and connect areas of strong magnetic fields called active regions. Sunspots are located within these active regions and solar flares occur in active regions.
The frequency of flares coincides with the Sun’s 11 year cycle. When the solar cycle is at a minimum, active regions are small and rare and few solar flares are detected. These increase in number as the Sun approaches the maximum part of its cycle. According to NASA, the Sun will reach its next maximum this year, give or take one year.
Scientists classify solar flares according to their x-ray brightness. There are five categories of solar flares: X-class flares are big; these flares are major events that can trigger planet-wide radio blackouts and long-lasting radiation storms. M-class flares are medium-sized and can cause brief radio blackouts that affect Earth’s polar regions; minor radiation storms sometimes follow an M-class flare. Compared to X- and M-class events, C-class flares are small, with few noticeable consequences here on Earth. A- and B- class solar flares are not even noticeable on Earth. Each category for x-ray flares has nine subdivisions: C1-C9, M1-M9 and X1-X9. A brighter solar flare has a higher number, so an M6 solar flare is brighter than an M2 solar flare.
The source of this activity -- sunspot 1158 -- is growing rapidly (click here to watch a video of the sunspot’s progression over a 48 hour period). Sunspot 1158 is in the Sun’s southern hemisphere, which has been lagging behind the northern hemisphere in activity for Solar Cycle 24. This active region is now more than 100,000 km wide, with at least a dozen Earth-sized dark cores in the group. More Earth-directed eruptions are likely in the hours ahead.
According to Spaceweather.com, Sunday’s eruption produced a loud blast of radio waves that was heard in shortwave receivers. That website reported that a New Mexico amateur radio astronomer recorded these sounds at 19-21 MHz, calling it “some of the strongest radio bursting of the new solar cycle.”
On Tuesday at 1516 UTC, the same sunspot unleashed an X2.2-class flare; X-flares are the strongest type of x-ray flare, and this is the first such eruption of Solar Cycle 24; the last X-class flare was December 13, 2006 (click here to watch a movie of this X-class solar flare). NASA’s Solar Dynamics Observatory (SDO) recorded an intense flash of extreme ultraviolet radiation. The expanding cloud may be seen in this movie from NASA’s STEREO-B spacecraft.
In addition to flashing Earth with UV radiation, data from data from NASA’s Solar Terrestrial Relations Observatory (STEREO) and its Solar Heliospheric Observatory (SOHO) show that the explosion also hurled a coronal mass ejection (CME) toward Earth. Geomagnetic storms are possible when the CME hits the Earth’s magnetic field on or about February 16, and auroras are possible.
What does this mean to radio amateurs? When the CME hits the Earth’s atmosphere, the low bands will be depressed and signals will be weaker the lower the frequency. The absorption rate will be most severe on 160 meters, less on 80 and somewhat better on 40 meters. The maximum usable frequency (MUF) -- the highest frequency by which a radio wave can propagate between given terminals by ionospheric propagation alone, independent of power -- will be lower and auroral propagation on the VHF bands is quite possible.
“Sunspot 1158 is firing off all sorts of flares and causing disruptions to the geomagnetic field,” said H. Ward Silver, N0AX, who edits the ARRL Contest Update. “Depending on how active it remains over the next couple of days, there may be significant impact to HF propagation for the ARRL International DX CW Contest this weekend. The length of the disruption by the CME is unknown. A head-on collision with a lot of plasma will keep things unsettled all weekend, while the recovery from a glancing blow or smaller amounts of plasma may occur relatively quickly. Polar path propagation on Friday morning will be the best indicator of conditions before the contest begins. Those operating on 10 meters at all the multi-multi stations are holding their collective breaths!”
What Is a Solar Flare?
A solar flare occurs when magnetic energy that has built up in the solar atmosphere is suddenly released. Radiation is emitted across virtually the entire electromagnetic spectrum, from radio waves at the long wavelength end, through optical emission to x-rays and gamma rays at the short wavelength end. The amount of energy released is the equivalent of millions of 100-megaton hydrogen bombs exploding at the same time.
Solar flares extend out to the layer of the Sun called the corona. The corona is the outermost atmosphere of the Sun, consisting of highly rarefied gas. This gas normally has a temperature of a few million Kelvins. Inside a flare, the temperature typically reaches 10 or 20 million Kelvins, and can be as high as 100 million degrees Kelvin. The corona is not uniformly bright, but is concentrated around the solar equator in loop-shaped features. These bright loops are located within and connect areas of strong magnetic fields called active regions. Sunspots are located within these active regions and solar flares occur in active regions.
The frequency of flares coincides with the Sun’s 11 year cycle. When the solar cycle is at a minimum, active regions are small and rare and few solar flares are detected. These increase in number as the Sun approaches the maximum part of its cycle. According to NASA, the Sun will reach its next maximum this year, give or take one year.
Scientists classify solar flares according to their x-ray brightness. There are five categories of solar flares: X-class flares are big; these flares are major events that can trigger planet-wide radio blackouts and long-lasting radiation storms. M-class flares are medium-sized and can cause brief radio blackouts that affect Earth’s polar regions; minor radiation storms sometimes follow an M-class flare. Compared to X- and M-class events, C-class flares are small, with few noticeable consequences here on Earth. A- and B- class solar flares are not even noticeable on Earth. Each category for x-ray flares has nine subdivisions: C1-C9, M1-M9 and X1-X9. A brighter solar flare has a higher number, so an M6 solar flare is brighter than an M2 solar flare.
Friday, February 11, 2011
Powerful earthquake rocks Chile
There was no initial reports of casualties or damage, but media reports said the quake was felt in a wide area of central Chile.
The US Geological Survey and Chile's national emergency office said the quake occurred in the Pacific some 70 kilometers (45 kilometers) from the city of Concepcion.
The USGS initially reported a major 7.0 magnitude, and later revised that to 6.8, which can still cause devastation.
The quake struck at 2005 GMT near a region in central Chile that was devastated by an 8.8 magnitude earthquake and tsunami on February 27, 2010.
Last year's disaster led to more than 500 deaths and $30 billion dollars in damage, and led to an inquiry over the lack of a timely tsunami warning.
The Pacific Tsunami Warning Center said that "a destructive Pacific-wide tsunami is not expected," from this quake but that earthquakes of this size "sometimes generate local tsunamis that can be destructive along coasts" within a 100 kilometers of the epicenter.
"Authorities in the region of the epicenter should be aware of this possibility and take appropriate action," it said.
The USGS said the location of the earthquake was 395 kilometers (245 miles) southwest of Santiago.
Thursday, February 10, 2011
Hard Freeze Warning
NATIONAL WEATHER SERVICE SHREVEPORT LA
944 PM CST THU FEB 10 2011
ARZ050-051-059>061-070>073-OKZ077-TXZ096-097-108>112-111500-
/O.CON.KSHV.HZ.W.0006.110211T0600Z-110211T1500Z/
SEVIER-HOWARD-LITTLE RIVER-HEMPSTEAD-NEVADA-MILLER-LAFAYETTE-
COLUMBIA-UNION AR-MCCURTAIN-RED RIVER-BOWIE-FRANKLIN-TITUS-CAMP-
MORRIS-CASS-
INCLUDING THE CITIES OF...DE QUEEN...NASHVILLE...ASHDOWN...HOPE...
PRESCOTT...TEXARKANA...LEWISVILLE...MAGNOLIA...EL DORADO...
IDABEL...CLARKSVILLE...MT VERNON...MT PLEASANT...PITTSBURG...
DAINGERFIELD...ATLANTA
944 PM CST THU FEB 10 2011
...HARD FREEZE WARNING REMAINS IN EFFECT UNTIL 9 AM CST FRIDAY...
THE NATIONAL WEATHER SERVICE IN SHREVEPORT WILL CONTINUE A HARD FREEZE
WARNING...WHICH WILL BE IN EFFECT FROM 12 AM CST TO 9 AM CST
FRIDAY. A HARD FREEZE WARNING REMAINS IN EFFECT UNTIL 9 AM CST
FRIDAY.
* A VERY COLD ARCTIC AIR MASS HAS SETTLED ACROSS THE REGION.
TEMPERATURES WILL FALL INTO THE LOWER AND MIDDLE TEENS BEFORE
DAYBREAK...ACROSS MUCH OF NORTHEAST TEXAS...SOUTHEAST
OKLAHOMA...AND ALL OF SOUTHWEST ARKANSAS.
* IMPACTS: THESE EXTREMELY COLD TEMPERATURES WILL PERSIST
THROUGH THE EARLY MORNING HOURS...BEFORE SLOWLY CLIMBING INTO
THE 20S BY MID MORNING. RESIDENTS SHOULD TAKE PRECAUTIONS TO
PROTECT WATER PIPES...PETS AND PLANTS FROM THESE VERY COLD
CONDITIONS.
A HARD FREEZE WARNING MEANS SUB-FREEZING TEMPERATURES ARE
IMMINENT FOR SEVERAL HOURS TONIGHT AND EARLY FRIDAY MORNING. THIS
WILL PLACE GREAT STRESS ON PERSONS WITHOUT ADEQUATE HEAT. CHECK ON
YOUR ELDERLY NEIGHBORS TO MAKE SURE THEY HAVE HEATING DURING THIS
EXTENDED COLD PERIOD.
NOAA Studies Atmospheric ‘Rivers’ Using Unmanned Aircraft
Atmospheric rivers, or ARs, are narrow regions in the atmosphere that transport large amounts of water vapor across the Pacific and other regions. In one day, an average AR transports an amount of water vapor equivalent to a foot of liquid water covering 10 million acres — an area roughly the size of Maryland. This is about seven times the average daily flow of water from the Mississippi River into the Gulf of Mexico. Only a portion of the water vapor transported by an AR is transformed into rain or snow; for example, about 20-40 percent in one AR crossing northern California makes it to the surface.
The importance of ARs was recently highlighted in a major emergency preparedness scenario led by the U.S. Geological Survey that focused on the possibility of a series of strong ARs striking California. That scenario showed that resulting flooding, wind and even mudslides could exceed damages brought on by Hurricane Katrina in 2005.
Results from WISPAR will include demonstration of new technology, contributions to the science of ARs, and, through collaborations with NOAA’s Winter Storms Reconnaissance Program — started by the National Weather Service in 1999 to collect observations to improve winter storm forecasts — the potential of offshore monitoring of ARs to aid in weather predictions.
While ARs are responsible for great quantities of rain that can produce flooding, they also contribute to beneficial increases in snowpack. A series of atmospheric rivers fueled the strong winter storms that battered the U.S. West Coast from western Washington to southern California from Dec. 10-22, 2010, producing 11 to 25 inches of rain in certain areas. The ARs also contributed to the snowpack in the Sierras, which received 75 percent of its annual snow by Dec. 22, the first full day of winter.
“We need to know more so we can better predict the exact timing, location and amounts of precipitation,” said Marty Ralph, head of the Water Cycle Branch at NOAA’s Earth System Research Laboratory in Boulder, Colo. “Although we have been studying atmospheric rivers since 2003, there are still things to be learned about the fate of ARs in a changing climate, such as do they get stronger or weaker, do they occur more or less frequently?”
NASA’s Global Hawk, which is operated by NASA’s Dryden Flight Research Center in southern California, will be equipped with sensors including an advanced water vapor sensor — the high-altitude monolithic microwave integrated circuit sounding radiometer, or HAMSR — created by NASA’s Jet Propulsion Laboratory in Pasadena, Calif., and a new dropsonde funded by NOAA and developed by the National Center for Atmospheric Research in Boulder, Colo. The dropsondes will be launched from the Global Hawk and take temperature, wind and other readings as they descend through an AR.
Unmanned aircraft are being used in a variety of scientific studies because they are able to fly long distances, stay aloft for more than 24 hours and can travel at high and low altitudes that could be dangerous for humans.
Because microwave satellite techniques that monitor ARs over the oceans do not work well over land and no direct wind measurements are taken in ARs over the ocean, NOAA researchers are installing an observing network across California that will help monitor ARs as they strike the coast and move inland. The system will measure both winds and water vapor. Initial sites in this network provide data that can be compared with forecast models. This will allow for adjustments to model predictions of the strength and position of the ARs, conditions that are crucial to determining when and where the most extreme precipitation will occur.
NOAA’s Hydrometeorology Testbed has helped advance understanding of ARs and developed tools for use in their monitoring and prediction. Results from the Testbed are being used to implement a permanent network of modern observations across California jointly with the California Department of Water Resources and Scripps Institution of Oceanography. A related project with the California Energy Commission and Scripps is studying ARs in a changing climate. Each project derives benefit from the unique observations from WISPAR.
The California Department of Water Resources project, which focuses on enhanced flood response and emergency preparedness, also involves atmospheric and hydrologic modeling, specialized display systems and the development of decision support tools. Building on lessons learned by the pilot project in California, a smaller but similar set of instrumentation has also been installed in western Washington to aid forecasters in dealing with AR-driven extreme events in that region.
Tuesday, February 8, 2011
Winter Storm Warning
NATIONAL WEATHER SERVICE SHREVEPORT LA
418 PM CST TUE FEB 8 2011
ARZ050-051-059-070-OKZ077-TXZ096-097-108>112-124>126-136>138-150-
151-091200-
/O.UPG.KSHV.WS.A.0003.110209T0600Z-110210T0000Z/
/O.NEW.KSHV.WS.W.0003.110209T0600Z-110210T0000Z/
SEVIER-HOWARD-LITTLE RIVER-MILLER-MCCURTAIN-RED RIVER-BOWIE-
FRANKLIN-TITUS-CAMP-MORRIS-CASS-WOOD-UPSHUR-MARION-SMITH-GREGG-
HARRISON-RUSK-PANOLA-
INCLUDING THE CITIES OF...DE QUEEN...NASHVILLE...ASHDOWN...
TEXARKANA...IDABEL...CLARKSVILLE...MT VERNON...MT PLEASANT...
PITTSBURG...DAINGERFIELD...ATLANTA...QUITMAN...GILMER...
JEFFERSON...TYLER...LONGVIEW...MARSHALL...HENDERSON...CARTHAGE
418 PM CST TUE FEB 8 2011
...WINTER STORM WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 6 PM
CST WEDNESDAY...
THE NATIONAL WEATHER SERVICE IN SHREVEPORT HAS ISSUED A WINTER
STORM WARNING FOR SNOW...WHICH IS IN EFFECT FROM MIDNIGHT TONIGHT
TO 6 PM CST WEDNESDAY. THE WINTER STORM WATCH IS NO LONGER IN
EFFECT.
* TIMING: ACCUMULATING SNOW WILL BEGIN LATE TONIGHT ACROSS EXTREME
NORTHEAST TEXAS...SOUTHEAST OKLAHOMA...AND ADJACENT SECTIONS OF
SOUTHWEST ARKANSAS AFTER MIDNIGHT...AS TEMPERATURES FALL BELOW
FREEZING...AND PERSIST THROUGH MUCH OF THE DAY WEDNESDAY.
ACCUMULATING SNOW WILL BEGIN AROUND DAYBREAK WEDNESDAY ACROSS
MUCH OF NORTHEAST TEXAS...PERSISTING THROUGH MUCH OF THE DAY.
* SNOW ACCUMULATIONS: SNOW ACCUMULATIONS NEAR ONE INCH WILL BE
POSSIBLE AFTER MIDNIGHT TONIGHT THROUGH 6 AM WEDNESDAY. MINOR
SNOW AND SLEET ACCUMULATIONS WILL ALSO BE POSSIBLE AFTER
MIDNIGHT ACROSS MOST OF NORTHEAST TEXAS...BEFORE CHANGING OVER
TO ALL SNOW WEDNESDAY MORNING. TOTAL SNOW ACCUMULATIONS OF 6 TO
8 INCHES...WITH ISOLATED HIGHER AMOUNTS...WILL BE POSSIBLE
ACROSS SOUTHEAST OKLAHOMA AND ADJACENT SECTIONS OF SOUTHWEST
ARKANSAS NORTH OF AN IDABEL OKLAHOMA...TO ASHDOWN...HOPE...AND
ROSSTON ARKANSAS LINE. TOTAL SNOW AMOUNTS OF 4 TO 6 INCHES WILL
BE POSSIBLE ALONG THE INTERSTATE 30 CORRIDOR OF NORTHEAST TEXAS
AND ADJACENT SOUTHWEST ARKANSAS. FURTHER SOUTH NEAR THE I-20
CORRIDOR OF NORTHEAST TEXAS... EXPECT TOTAL SNOW AMOUNTS OF 2 TO
4 INCHES.
* IMPACTS: MODERATE TO HEAVY SNOW WILL RESULT IN HAZARDOUS TRAVEL
AND OUTDOOR CONDITIONS DUE TO SNOW PACKED ROADS AND LOW
VISIBILITY.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A WINTER STORM WARNING FOR HEAVY SNOW MEANS SEVERE WINTER WEATHER
CONDITIONS ARE EXPECTED OR OCCURRING. SIGNIFICANT AMOUNTS OF SNOW
ARE FORECAST THAT WILL MAKE TRAVEL DANGEROUS. ONLY TRAVEL IN AN
EMERGENCY. IF YOU MUST TRAVEL...KEEP AN EXTRA FLASHLIGHT...
FOOD...AND WATER IN YOUR VEHICLE IN CASE OF AN EMERGENCY.
&&
$$
Sunday, February 6, 2011
Tuesday night into Wednesday
A MUCH MORE SIGNIFICANT WINTER STORM...EFFECTING THE ENTIRE FOUR
STATE REGION...WILL BE MOVING INTO THE FOUR STATE REGION WEDNESDAY
INTO WEDNESDAY NIGHT. THIS DISTURBANCE WILL HAVE MUCH MORE
MOISTURE TO WORK WITH AND MUCH MORE IN THE WAY OF COLDER AIR AS
WELL. WHILE THE STORM SYSTEM IS STILL SEVERAL DAYS AWAY...IT
APPEARS THAT SIGNIFICANT SNOW AND ICE ACCUMULATIONS WILL BE
POSSIBLE FOR THE REGION WEDNESDAY INTO WEDNESDAY NIGHT. THE
EVOLUTION OF THIS STORM SYSTEM WILL CONTINUE TO BE MONITORED
CLOSELY AS THE EVENT NEARS.
STATE REGION...WILL BE MOVING INTO THE FOUR STATE REGION WEDNESDAY
INTO WEDNESDAY NIGHT. THIS DISTURBANCE WILL HAVE MUCH MORE
MOISTURE TO WORK WITH AND MUCH MORE IN THE WAY OF COLDER AIR AS
WELL. WHILE THE STORM SYSTEM IS STILL SEVERAL DAYS AWAY...IT
APPEARS THAT SIGNIFICANT SNOW AND ICE ACCUMULATIONS WILL BE
POSSIBLE FOR THE REGION WEDNESDAY INTO WEDNESDAY NIGHT. THE
EVOLUTION OF THIS STORM SYSTEM WILL CONTINUE TO BE MONITORED
CLOSELY AS THE EVENT NEARS.
The 12Z forecast sounding for Shreveport indicates that for areas where temperatures are greater than 32 degrees precipitation would be in the form of rain. Areas where temperatures are <32 degrees precipitation would be in the form of freezing rain.
The 00Z Soundings soundings indicate a snow event except for areas south of a Tyler to Shreveport to Memphis line. In this area look for a freezing rain event as the 1000 to 500 MB thickness contour will be greater than 5400 decameters.
Saturday, February 5, 2011
Hazardous Weather Outlook
000
FLUS44 KSHV 052131
HWOSHV
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SHREVEPORT LA
331 PM CST SAT FEB 5 2011
ARZ050-051-059>061-070>073-LAZ001>006-010>014-017>022-OKZ077-
TXZ096-097-108>112-124>126-136>138-149>153-165>167-061215-
SEVIER-HOWARD-LITTLE RIVER-HEMPSTEAD-NEVADA-MILLER-LAFAYETTE-
COLUMBIA-UNION AR-CADDO-BOSSIER-WEBSTER-CLAIBORNE-LINCOLN-
UNION LA-DE SOTO-RED RIVER-BIENVILLE-JACKSON-OUACHITA-SABINE LA-
NATCHITOCHES-WINN-GRANT-CALDWELL-LA SALLE-MCCURTAIN-BOWIE-
FRANKLIN-TITUS-CAMP-MORRIS-CASS-WOOD-UPSHUR-MARION-SMITH-GREGG-
HARRISON-CHEROKEE-RUSK-PANOLA-NACOGDOCHES-SHELBY-ANGELINA-
SAN AUGUSTINE-SABINE TX-
331 PM CST SAT FEB 5 2011
THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTH CENTRAL
ARKANSAS...SOUTHWEST ARKANSAS...NORTH CENTRAL LOUISIANA...
NORTHWEST LOUISIANA...SOUTHEAST OKLAHOMA...EAST TEXAS AND
NORTHEAST TEXAS.
.DAY ONE...TONIGHT...
TEMPERATURES SHOULD NOT BE AS COLD TONIGHT WITH LOWS MOSTLY
IN THE 20S TO LOWER 30S. THE COLDEST TEMPERATURES WILL BE
FELT ACROSS EXTREME NORTHEAST TEXAS...SOUTHEAST OKLAHOMA
AND SOUTHWEST ARKANSAS WHERE A SNOW PACK REMAINS ON THE
GROUND FROM THE WINTER STORM THURSDAY NIGHT THROUGH
FRIDAY. THIS SNOW...ALONG WITH LIGHT SOUTH WINDS TONIGHT...
COULD RESULT IN PATCHY FREEZING FOG ACROSS THE REGION. THIS
WOULD RESULT IN RIME ICE FORMING ON AREA ROADWAYS THAT MAY
HAVE ALREADY DRIED OUT FROM THE MELTING SNOW. LATE TONIGHT...
THE LEADING EDGE OF AN UPPER LEVEL STORM SYSTEM WILL MOVE
ACROSS CENTRAL OKLAHOMA INTO THE REGION FROM THE WEST.
THIS SYSTEM WILL HAVE THE CAPABILITY TO PRODUCE LIGHT
FREEZING RAIN OR FREEZING DRIZZLE ACROSS MAINLY SOUTHEAST
OKLAHOMA INTO EXTREME SOUTHWEST ARKANSAS. IF THIS PRECIPITATION
MATERIALIZES LATE TONIGHT...ONLY VERY LIGHT ACCUMULATIONS
WOULD BE EXPECTED.
.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY...
THE UPPER LEVEL STORM SYSTEM MOVES INTO THE SOUTHERN PLAINS AND
LOWER MISSISSIPPI VALLEY DURING THE DAY SUNDAY INTO SUNDAY NIGHT.
THIS SYSTEM WILL NOT HAVE A GOOD FETCH OF MOISTURE TO WORK WITH...
BUT THE DYNAMICS OF THE SYSTEM...ALONG WITH THE COLD AIR ASSOCIATED
WITH IT...WILL SUPPORT A MIXTURE OF RAIN AND SNOW LATE IN THE DAY
SUNDAY. THIS MIXTURE SUNDAY AFTERNOON WILL BE FELT MAINLY ALONG
AND NORTH OF THE INTERSTATE 30 CORRIDOR OF NORTHEAST TEXAS...
SOUTHEAST OKLAHOMA AND SOUTHWEST ARKANSAS. LATER SUNDAY NIGHT...
THE RAIN AND SNOW MIXTURE WILL BE POSSIBLE FURTHER SOUTH...INCLUDING
THE INTERSTATE 20 CORRIDOR OF NORTHEAST TEXAS...INTO NORTHERN
LOUISIANA. THE SYSTEM SHOULD EXIT THE REGION LATE SUNDAY NIGHT INTO
EARLY MONDAY. ANY SNOWFALL ACCUMULATIONS WITH THIS STORM SYSTEM
SUNDAY INTO SUNDAY NIGHT WOULD BE LIGHT...IF ANY.
A MUCH MORE SIGNIFICANT WINTER STORM...EFFECTING THE ENTIRE FOUR
STATE REGION...WILL BE MOVING INTO THE FOUR STATE REGION WEDNESDAY
INTO WEDNESDAY NIGHT. THIS DISTURBANCE WILL HAVE MUCH MORE
MOISTURE TO WORK WITH AND MUCH MORE IN THE WAY OF COLDER AIR AS
WELL. WHILE THE STORM SYSTEM IS STILL SEVERAL DAYS AWAY...IT
APPEARS THAT SIGNIFICANT SNOW AND ICE ACCUMULATIONS WILL BE
POSSIBLE FOR THE REGION WEDNESDAY INTO WEDNESDAY NIGHT. THE
EVOLUTION OF THIS STORM SYSTEM WILL CONTINUE TO BE MONITORED
CLOSELY AS THE EVENT NEARS.
FLUS44 KSHV 052131
HWOSHV
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SHREVEPORT LA
331 PM CST SAT FEB 5 2011
ARZ050-051-059>061-070>073-LAZ001>006-010>014-017>022-OKZ077-
TXZ096-097-108>112-124>126-136>138-149>153-165>167-061215-
SEVIER-HOWARD-LITTLE RIVER-HEMPSTEAD-NEVADA-MILLER-LAFAYETTE-
COLUMBIA-UNION AR-CADDO-BOSSIER-WEBSTER-CLAIBORNE-LINCOLN-
UNION LA-DE SOTO-RED RIVER-BIENVILLE-JACKSON-OUACHITA-SABINE LA-
NATCHITOCHES-WINN-GRANT-CALDWELL-LA SALLE-MCCURTAIN-BOWIE-
FRANKLIN-TITUS-CAMP-MORRIS-CASS-WOOD-UPSHUR-MARION-SMITH-GREGG-
HARRISON-CHEROKEE-RUSK-PANOLA-NACOGDOCHES-SHELBY-ANGELINA-
SAN AUGUSTINE-SABINE TX-
331 PM CST SAT FEB 5 2011
THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTH CENTRAL
ARKANSAS...SOUTHWEST ARKANSAS...NORTH CENTRAL LOUISIANA...
NORTHWEST LOUISIANA...SOUTHEAST OKLAHOMA...EAST TEXAS AND
NORTHEAST TEXAS.
.DAY ONE...TONIGHT...
TEMPERATURES SHOULD NOT BE AS COLD TONIGHT WITH LOWS MOSTLY
IN THE 20S TO LOWER 30S. THE COLDEST TEMPERATURES WILL BE
FELT ACROSS EXTREME NORTHEAST TEXAS...SOUTHEAST OKLAHOMA
AND SOUTHWEST ARKANSAS WHERE A SNOW PACK REMAINS ON THE
GROUND FROM THE WINTER STORM THURSDAY NIGHT THROUGH
FRIDAY. THIS SNOW...ALONG WITH LIGHT SOUTH WINDS TONIGHT...
COULD RESULT IN PATCHY FREEZING FOG ACROSS THE REGION. THIS
WOULD RESULT IN RIME ICE FORMING ON AREA ROADWAYS THAT MAY
HAVE ALREADY DRIED OUT FROM THE MELTING SNOW. LATE TONIGHT...
THE LEADING EDGE OF AN UPPER LEVEL STORM SYSTEM WILL MOVE
ACROSS CENTRAL OKLAHOMA INTO THE REGION FROM THE WEST.
THIS SYSTEM WILL HAVE THE CAPABILITY TO PRODUCE LIGHT
FREEZING RAIN OR FREEZING DRIZZLE ACROSS MAINLY SOUTHEAST
OKLAHOMA INTO EXTREME SOUTHWEST ARKANSAS. IF THIS PRECIPITATION
MATERIALIZES LATE TONIGHT...ONLY VERY LIGHT ACCUMULATIONS
WOULD BE EXPECTED.
.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY...
THE UPPER LEVEL STORM SYSTEM MOVES INTO THE SOUTHERN PLAINS AND
LOWER MISSISSIPPI VALLEY DURING THE DAY SUNDAY INTO SUNDAY NIGHT.
THIS SYSTEM WILL NOT HAVE A GOOD FETCH OF MOISTURE TO WORK WITH...
BUT THE DYNAMICS OF THE SYSTEM...ALONG WITH THE COLD AIR ASSOCIATED
WITH IT...WILL SUPPORT A MIXTURE OF RAIN AND SNOW LATE IN THE DAY
SUNDAY. THIS MIXTURE SUNDAY AFTERNOON WILL BE FELT MAINLY ALONG
AND NORTH OF THE INTERSTATE 30 CORRIDOR OF NORTHEAST TEXAS...
SOUTHEAST OKLAHOMA AND SOUTHWEST ARKANSAS. LATER SUNDAY NIGHT...
THE RAIN AND SNOW MIXTURE WILL BE POSSIBLE FURTHER SOUTH...INCLUDING
THE INTERSTATE 20 CORRIDOR OF NORTHEAST TEXAS...INTO NORTHERN
LOUISIANA. THE SYSTEM SHOULD EXIT THE REGION LATE SUNDAY NIGHT INTO
EARLY MONDAY. ANY SNOWFALL ACCUMULATIONS WITH THIS STORM SYSTEM
SUNDAY INTO SUNDAY NIGHT WOULD BE LIGHT...IF ANY.
A MUCH MORE SIGNIFICANT WINTER STORM...EFFECTING THE ENTIRE FOUR
STATE REGION...WILL BE MOVING INTO THE FOUR STATE REGION WEDNESDAY
INTO WEDNESDAY NIGHT. THIS DISTURBANCE WILL HAVE MUCH MORE
MOISTURE TO WORK WITH AND MUCH MORE IN THE WAY OF COLDER AIR AS
WELL. WHILE THE STORM SYSTEM IS STILL SEVERAL DAYS AWAY...IT
APPEARS THAT SIGNIFICANT SNOW AND ICE ACCUMULATIONS WILL BE
POSSIBLE FOR THE REGION WEDNESDAY INTO WEDNESDAY NIGHT. THE
EVOLUTION OF THIS STORM SYSTEM WILL CONTINUE TO BE MONITORED
CLOSELY AS THE EVENT NEARS.
Thursday, February 3, 2011
Hazardous Weather Outlook
NATIONAL WEATHER SERVICE SHREVEPORT LA
807 AM CST THU FEB 3 2011
ARZ050-051-059>061-070-071-OKZ077-TXZ096-097-108>112-124-125-031800-
BOWIE-CAMP-CASS-FRANKLIN-HEMPSTEAD-HOWARD-LAFAYETTE-LITTLE RIVER-
MCCURTAIN-MILLER-MORRIS-NEVADA-RED RIVER TX-SEVIER-TITUS-UPSHUR-WOOD-
807 AM CST THU FEB 3 2011
THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF EAST AND NORTHEAST
TEXAS...SOUTHWEST AND SOUTH CENTRAL ARKANSAS...AND SOUTHEAST
OKLAHOMA.
.DAY ONE...TODAY AND TONIGHT...
PRECIPITATION WILL BEGIN TODAY AND FALL AS RAIN WITH A WINTRY MIX
OF SNOW...AND OR SLEET. THERE WILL BE BRIEF PERIODS WHERE THE
MIX COULD INCLUDE FREEZING RAIN. SNOW ACCUMULATIONS OF LESS THAN
ONE INCH WILL BE POSSIBLE THROUGH TONIGHT. WITH THE COLD
TEMPERATURES IN PLACE TRAVEL WILL BECOME SLIPPERY AND HAZARDOUS.
.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY...
A WINTRY MIX WILL CONTINUE INTO THE DAY FRIDAY BEFORE
TAPERING OFF FRIDAY AFTERNOON OR EARLY EVENING. LIGHT
SNOW ACCUMULATIONS WILL BE POSSIBLE FRIDAY. RESIDENTS OF THE
FOUR STATE AREA NEED TO STAY UP TO DATE ON THIS WEATHER SYSTEM.
Wednesday, February 2, 2011
Weather Outlook
An arctic cold front moved through the Ark-La-Tex Tuesday (February 1, 2010). Ahead of the front straight line winds and 2 confirmed tornadoes. Behind the front very cold temperatures. Over night low temperatures Tuesday night and early Wednesday morning were in the mid teens.
The artic air mass is forecasted to remain over the area through Saturday. A mid level storm system is forecasted to move towards the Ark-La-Tex Thursday night into Friday. At the same time asurface low is forecasted to develop in the Gulf of Mexico. This will feature will provide some mid level moisture. As the mid level storm system interacts with the moisture winter precipitation is possible.
Hazardous Weather Outlook
FLUS44 KSHV 021757
HWOSHV
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SHREVEPORT LA
1157 AM CST WED FEB 2 2011
ARZ050-051-059>061-070>073-LAZ001>004-OKZ077-TXZ096-097-108>112-
124>126-136>138-149>151-031200-
BOSSIER-BOWIE-CADDO-CAMP-CASS-CHEROKEE-CLAIBORNE-COLUMBIA-FRANKLIN-
GREGG-HARRISON-HEMPSTEAD-HOWARD-LAFAYETTE-LITTLE RIVER-MARION-
MCCURTAIN-MILLER-MORRIS-NEVADA-PANOLA-RED RIVER TX-RUSK-SEVIER-SMITH-
TITUS-UNION AR-UPSHUR-WEBSTER-WOOD-
1157 AM CST WED FEB 2 2011
THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTH CENTRAL
ARKANSAS...SOUTHWEST ARKANSAS...NORTHWEST LOUISIANA...SOUTHEAST
OKLAHOMA AND NORTHEAST TEXAS.
.DAY ONE...TODAY AND TONIGHT...
A HARD FREEZE IS EXPECTED AGAIN TONIGHT...WITH TEMPERATURES
DROPPING INTO THE TEENS AND LOWER 20S OVER MUCH OF THE AREA.
NORTHWEST WINDS AROUND 10 MPH MAY PERSIST TONIGHT...LOWERING WIND
CHILLS TO VERY COLD READINGS.
.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY...
ANOTHER UPPER LEVEL STORM SYSTEM WILL APPROACH THE REGION THURSDAY
NIGHT...WITH AREAS OF SNOW DEVELOPING ACROSS EAST TEXAS THURSDAY
EVENING...AND SPREADING NORTHEAST ACROSS NORTHWEST LOUISIANA...
SOUTHWEST ARKANSAS...AND NORTH CENTRAL LOUISIANA THURSDAY
NIGHT THROUGH FRIDAY MORNING. RESIDENTS OF THE FOUR STATE AREA NEED
TO STAY UP TO DATE ON THIS WEATHER SYSTEM.
Tuesday, February 1, 2011
weather Advisories
Freeze Warning
URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE SHREVEPORT LA 330 AM CST TUE FEB 1 2011 ARZ050-059-OKZ077-TXZ096-097-108>112-124>126-136>138-149>152- 011800- /O.NEW.KSHV.FZ.W.0001.110202T0400Z-110202T1500Z/ /O.CON.KSHV.LW.Y.0002.110201T1200Z-110202T1200Z/ SEVIER-LITTLE RIVER-MCCURTAIN-RED RIVER-BOWIE-FRANKLIN-TITUS-CAMP- MORRIS-CASS-WOOD-UPSHUR-MARION-SMITH-GREGG-HARRISON-CHEROKEE-RUSK- PANOLA-NACOGDOCHES- INCLUDING THE CITIES OF...DE QUEEN...ASHDOWN...IDABEL... CLARKSVILLE...TEXARKANA...MT VERNON...MT PLEASANT...PITTSBURG... DAINGERFIELD...ATLANTA...QUITMAN...GILMER...JEFFERSON...TYLER... LONGVIEW...MARSHALL...RUSK...HENDERSON...CARTHAGE...NACOGDOCHES 330 AM CST TUE FEB 1 2011 ...LAKE WIND ADVISORY REMAINS IN EFFECT FROM 6 AM THIS MORNING TO 6 AM CST WEDNESDAY... ...FREEZE WARNING IN EFFECT FROM 10 PM THIS EVENING TO 9 AM CST WEDNESDAY... THE NATIONAL WEATHER SERVICE IN SHREVEPORT HAS ISSUED A FREEZE WARNING...WHICH IS IN EFFECT FROM 10 PM THIS EVENING TO 9 AM CST WEDNESDAY. A LAKE WIND ADVISORY REMAINS IN EFFECT FROM 6 AM THIS MORNING TO 6 AM CST WEDNESDAY. A STRONG COLD FRONT WILL PUSH THROUGH THE FOUR STATE REGION TODAY... BRINGING VERY STRONG NORTHWEST WINDS AND MUCH COLDER TEMPERATURES ACROSS ALL AREAS THROUGHOUT THE REGION BY EARLY AFTERNOON. * IMPACTS: WINDS IN THE WAKE OF THE COLD FRONT ARE EXPECTED TO BE SUSTAINED AT 20 TO 30 MPH WITH GUSTS APPROACHING 40 MPH. TEMPERATURES TONIGHT ARE EXPECTED TO FALL BELOW 15 DEGREES ACROSS THE REGION...LEADING TO HARD FREEZE CONDITIONS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A LAKE WIND ADVISORY INDICATES THAT WINDS WILL CAUSE ROUGH CHOP ON AREA LAKES. SMALL BOATS WILL BE ESPECIALLY PRONE TO CAPSIZING. A FREEZE WARNING MEANS SUB-FREEZING TEMPERATURES ARE IMMINENT OR HIGHLY LIKELY. THESE CONDITIONS WILL KILL CROPS AND OTHER SENSITIVE VEGETATION. && $$ *********************************************************
Wind Chill Advisory
URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE SHREVEPORT LA 331 AM CST TUE FEB 1 2011 .AN ARCTIC COLD FRONT WILL MOVE INTO THE AREA TODAY... DRIVING TEMPERATURES BELOW FREEZING...CHANGING LIGHT RAIN OVER TO SLEET AND SNOW...AND PRODUCING WIND CHILL VALUES BELOW 10 DEGREES ACROSS PORTIONS OF NORTHEAST TEXAS...SOUTHEAST OKLAHOMA...AND SOUTHWEST ARKANSAS THIS AFTERNOON. ARZ050-051-059-060-070-OKZ077-TXZ096-097-108>112-124-125-136-137- 011815- /O.NEW.KSHV.WC.Y.0001.110201T2000Z-110202T1800Z/ /O.CON.KSHV.WW.Y.0003.110201T1800Z-110202T0300Z/ SEVIER-HOWARD-LITTLE RIVER-HEMPSTEAD-MILLER-MCCURTAIN-RED RIVER- BOWIE-FRANKLIN-TITUS-CAMP-MORRIS-CASS-WOOD-UPSHUR-SMITH-GREGG- INCLUDING THE CITIES OF...DE QUEEN...NASHVILLE...ASHDOWN...HOPE... TEXARKANA...IDABEL...CLARKSVILLE...MT VERNON...MT PLEASANT... PITTSBURG...DAINGERFIELD...ATLANTA...QUITMAN...GILMER...TYLER... LONGVIEW 331 AM CST TUE FEB 1 2011 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM NOON TODAY TO 9 PM CST THIS EVENING... ...WIND CHILL ADVISORY IN EFFECT FROM 2 PM THIS AFTERNOON TO NOON CST WEDNESDAY... THE NATIONAL WEATHER SERVICE IN SHREVEPORT HAS ISSUED A WIND CHILL ADVISORY...WHICH IS IN EFFECT FROM 2 PM THIS AFTERNOON TO NOON CST WEDNESDAY. A WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM NOON TODAY TO 9 PM CST THIS EVENING. * AREAS OF LIGHT RAIN WILL CHANGE OVER TO A MIXTURE OF SLEET AND SNOW ACROSS PORTIONS OF NORTHEAST TEXAS...SOUTHEAST OKLAHOMA AND SOUTHWEST ARKANSAS. INCREASED WINDS WILL ALSO ALLOW WIND CHILL VALUES TO FALL BELOW 10 DEGREES. * SNOW ACCUMULATIONS OF ONE TO TWO INCHES WILL BE OBSERVED IN THE ADVISORY AREAS GENERALLY NORTH OF I-30...WHILE A HALF INCH TO AN INCH WILL BE OBSERVED IN THE ADVISORY AREAS TO THE SOUTH OF I-30. * IMPACTS: AS AIR TEMPERATURES FALL TO NEAR OR SLIGHTLY BELOW FREEZING TODAY...MINOR ACCUMULATIONS OF ICE AND SNOW WILL BE POSSIBLE ON ELEVATED SURFACES...SUCH AS BRIDGES AND OVERPASSES. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW OR SLEET WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS ON ELEVATED SURFACES AND USE CAUTION WHILE DRIVING. A WIND CHILL ADVISORY MEANS THAT VERY COLD AIR AND STRONG WINDS WILL COMBINE TO GENERATE LOW WIND CHILLS. THIS WILL RESULT IN FROST BITE AND LEAD TO HYPOTHERMIA IF PRECAUTIONS ARE NOT TAKEN. IF YOU MUST VENTURE OUTDOORS...MAKE SURE YOU WEAR A HAT AND GLOVES. && $$ ***********************************************************************
Winter Weather Advisory
URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE SHREVEPORT LA 331 AM CST TUE FEB 1 2011 .AN ARCTIC COLD FRONT WILL MOVE INTO THE AREA TODAY... DRIVING TEMPERATURES BELOW FREEZING...CHANGING LIGHT RAIN OVER TO SLEET AND SNOW...AND PRODUCING WIND CHILL VALUES BELOW 10 DEGREES ACROSS PORTIONS OF NORTHEAST TEXAS...SOUTHEAST OKLAHOMA...AND SOUTHWEST ARKANSAS THIS AFTERNOON. ARZ050-051-059-060-070-OKZ077-TXZ096-097-108>112-124-125-136-137- 011815- /O.NEW.KSHV.WC.Y.0001.110201T2000Z-110202T1800Z/ /O.CON.KSHV.WW.Y.0003.110201T1800Z-110202T0300Z/ SEVIER-HOWARD-LITTLE RIVER-HEMPSTEAD-MILLER-MCCURTAIN-RED RIVER- BOWIE-FRANKLIN-TITUS-CAMP-MORRIS-CASS-WOOD-UPSHUR-SMITH-GREGG- INCLUDING THE CITIES OF...DE QUEEN...NASHVILLE...ASHDOWN...HOPE... TEXARKANA...IDABEL...CLARKSVILLE...MT VERNON...MT PLEASANT... PITTSBURG...DAINGERFIELD...ATLANTA...QUITMAN...GILMER...TYLER... LONGVIEW 331 AM CST TUE FEB 1 2011 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM NOON TODAY TO 9 PM CST THIS EVENING... ...WIND CHILL ADVISORY IN EFFECT FROM 2 PM THIS AFTERNOON TO NOON CST WEDNESDAY... THE NATIONAL WEATHER SERVICE IN SHREVEPORT HAS ISSUED A WIND CHILL ADVISORY...WHICH IS IN EFFECT FROM 2 PM THIS AFTERNOON TO NOON CST WEDNESDAY. A WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM NOON TODAY TO 9 PM CST THIS EVENING. * AREAS OF LIGHT RAIN WILL CHANGE OVER TO A MIXTURE OF SLEET AND SNOW ACROSS PORTIONS OF NORTHEAST TEXAS...SOUTHEAST OKLAHOMA AND SOUTHWEST ARKANSAS. INCREASED WINDS WILL ALSO ALLOW WIND CHILL VALUES TO FALL BELOW 10 DEGREES. * SNOW ACCUMULATIONS OF ONE TO TWO INCHES WILL BE OBSERVED IN THE ADVISORY AREAS GENERALLY NORTH OF I-30...WHILE A HALF INCH TO AN INCH WILL BE OBSERVED IN THE ADVISORY AREAS TO THE SOUTH OF I-30. * IMPACTS: AS AIR TEMPERATURES FALL TO NEAR OR SLIGHTLY BELOW FREEZING TODAY...MINOR ACCUMULATIONS OF ICE AND SNOW WILL BE POSSIBLE ON ELEVATED SURFACES...SUCH AS BRIDGES AND OVERPASSES. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW OR SLEET WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS ON ELEVATED SURFACES AND USE CAUTION WHILE DRIVING. A WIND CHILL ADVISORY MEANS THAT VERY COLD AIR AND STRONG WINDS WILL COMBINE TO GENERATE LOW WIND CHILLS. THIS WILL RESULT IN FROST BITE AND LEAD TO HYPOTHERMIA IF PRECAUTIONS ARE NOT TAKEN. IF YOU MUST VENTURE OUTDOORS...MAKE SURE YOU WEAR A HAT AND GLOVES. && $$
Subscribe to:
Posts (Atom)