Wednesday, May 18, 2011

Day 3 Oulook

The Storm Prediction Center has portions of the Ark-La-Tex under a slight risk of severe weather some of the areas include counties in the NEBAR Repeater coverage area. Counties in the NEBAR Repeater Coverage area that are in the risk area are: McCurtain; Morris; and Red River County. It is important to remember this is still 3 days away and the risk area could be shifted further east or completely removed in later outlooks.
Here is the current Day 3 Convective Outlook Text from the Storm Prediction Center.
...THERE IS A SLGT RISK OF SVR TSTMS FROM NORTH TX TO SERN NEB/SWRN
   IA...
  
   ...CNTRL TX TO SERN NEB/SWRN IA...
  
   GFS/NAM SUGGEST A SIGNIFICANT MID LEVEL SHORTWAVE TROUGH WILL EJECT
   ACROSS THE CNTRL/SRN PLAINS FRIDAY INDUCING WEAK HEIGHT FALLS FROM
   NRN TX INTO SRN NEB.  AT THE SFC...LEE TROUGH/FRONT WILL BE
   DISPLACED EWD TO A LONGITUDE NEAR 100W BY 21/00Z.  WITH WARM SECTOR
   DEW POINTS EXPECTED TO BE WELL INTO THE 60S TO PERHAPS NEAR 70
   ACROSS TX IT APPEARS SUFFICIENT INSTABILITY WILL EXIST FOR ROBUST
   DEEP CONVECTION ACROSS A LARGE PART OF THE PLAINS INTO THE MS
   VALLEY...ESPECIALLY ALONG THE ERN EDGE OF STEEPER LAPSE RATES WHERE
   LOW LEVEL CONVERGENCE WILL BE MAXIMIZED NEAR THE FRONTAL ZONE.  BOTH
   THE NAM/GFS SUGGEST PRE-FRONTAL CONVECTION MAY EVOLVE WELL EAST OF
   THIS BOUNDARY DUE PARTLY TO INCREASED LOW LEVEL WARM ADVECTION.
   IT/S NOT ENTIRELY CLEAR HOW THIS ACTIVITY WILL INFLUENCE MORE
   DIURNAL CONVECTION FARTHER WEST ALONG THE FRONT AS SIGNIFICANT
   CLOUDS/PRECIP COULD REDUCE INSTABILITY FOR MORE ORGANIZED SEVERE.
   EVEN SO...SUBSTANTIAL MID LEVEL FLOW WILL OVERSPREAD THE
   AFOREMENTIONED REGION OF THE PLAINS WITH 50KT+ SPEEDS EXPECTED FOR
   FRONTAL CONVECTION.  AS A RESULT...MULTI-FACETED STORM
   MODE/EVOLUTION IS LIKELY WITH NUMEROUS WARM ADVECTION THUNDERSTORM
   CLUSTERS AND EMBEDDED SUPERCELLS LIKELY.




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