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Mesoscale Discussion 265
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   MESOSCALE DISCUSSION 0265
   NWS STORM PREDICTION CENTER NORMAN OK
   0826 PM CDT THU APR 09 2015

   AREAS AFFECTED...PORTIONS OF ERN TX...NRN LA...SRN AR

   CONCERNING...TORNADO WATCH 43...

   VALID 100126Z - 100300Z

   THE SEVERE WEATHER THREAT FOR TORNADO WATCH 43 CONTINUES.

   SUMMARY...THREAT FOR A FEW TORNADOES AND SCATTERED DAMAGING WIND
   GUSTS...AS WELL AS MARGINALLY SEVERE HAIL...CONTINUES ACROSS WW 43.

   DISCUSSION...A MULTI-CELLULAR COMPLEX OF TSTMS...WITH EMBEDDED
   SUPERCELL STRUCTURES...CONTINUES ACROSS FAR ERN TX. THE MAIN THREAT
   WITH THESE CELLS IS LOCATED FROM RUSK TO HARRISON COUNTIES...WHERE
   THREE ELEVATED CORES CONTINUE TO PRESENT MID-LEVEL ROTATION.
   FURTHERMORE...A FEW STRONGER CELLS IN SRN AR ALSO CONTINUE TO SHOW
   WEAK ROTATION. WHILE SOME VEERING OF LOW-LEVEL WINDS HAS
   OCCURRED...EFFECTIVE BULK SHEAR AROUND 35-40 KTS IS AVAILABLE FOR
   UPDRAFT ORGANIZATION. ADDITIONALLY...MOST RECENT SHV VWP SUGGESTS
   AROUND 200 M2/S2 OF 0-1KM SRH IS PRESENT ACROSS THE AREA. IN
   COMBINATION WITH AMPLE LOW-LEVEL MOISTURE OF APPROXIMATELY 13-14
   G/KG...THE ENVIRONMENT REMAINS SUPPORTIVE OF SEVERE THUNDERSTORMS
   CAPABLE OF TORNADOES. ADDITIONALLY...A FEW DAMAGING WIND GUSTS ARE
   POSSIBLE IN RESIDUAL POCKETS OF STEEP LOW-LEVEL LAPSE RATES PRIOR TO
   FURTHER COOLING/STABILIZATION OF THE BL.

   ..PICCA.. 04/10/2015


   ATTN...WFO...JAN...LZK...SHV...

   LAT...LON   32199290 31919335 31939487 32139536 32179528 33069381
               33609293 33729134 33449153 32839232 32199290 

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Page last modified: April 10, 2015
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