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Mesoscale Discussion 445
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   MESOSCALE DISCUSSION 0445
   NWS STORM PREDICTION CENTER NORMAN OK
   1145 PM CDT FRI APR 24 2015

   AREAS AFFECTED...NRN LA...SERN AR AND CNTRL MS

   CONCERNING...TORNADO WATCH 105...

   VALID 250445Z - 250615Z

   THE SEVERE WEATHER THREAT FOR TORNADO WATCH 105 CONTINUES.

   SUMMARY...STORMS WILL CONTINUE TO POSE A THREAT FOR MOSTLY DAMAGING
   WIND AND A FEW TORNADOES AS THEY CONTINUE THROUGH NRN LA...SERN AR
   AND CNTRL MS EARLY THIS MORNING. OTHER STORMS ARE DEVELOPING JUST
   EAST OF WW ACROSS NNTRL MS...SO WW CAN BE LOCALLY EXTENDED FARTHER
   EAST AS NECESSARY.

   DISCUSSION...SQUALL LINE HAS MAINTAINED ORGANIZATION WITH BOWING
   STRUCTURES AS IT MOVES THROUGH THE LOWER MS VALLEY REGION AT AROUND
   50 KT. STORMS WITHIN THE LINE CONTINUE TO EXHIBIT BOWING STRUCTURES
   AS WELL AS EMBEDDED MESOVORTICES. VWP DATA INDICATE VERY IMPRESSIVE
   WIND PROFILES WITH LARGE 0-2 KM HODOGRAPHS AND STRONG EFFECTIVE BULK
   SHEAR. THIS ACTIVITY WILL LIKELY PERSIST THROUGH CNTRL MS WHERE
   STRONG INFLOW FROM THE MOIST WARM SECTOR WILL MAINTAIN A FORWARD
   PROPAGATING SYSTEM WITHIN A MODESTLY UNSTABLE ENVIRONMENT. OTHER
   MORE DISCRETE STORMS ARE DEVELOPING OVER NCNTRL MS WITHIN WARM
   ADVECTION REGIME JUST NORTH OF WARM FRONT. THIS ACTIVITY APPEARS
   SLIGHTLY ELEVATED...SO ANY TORNADO THREAT WITH THESE STORMS IS
   CONDITIONAL UPON UPDRAFTS BEING ABLE TO ROOT INTO THE NEAR-SFC
   LAYER.

   ..DIAL.. 04/25/2015


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

   LAT...LON   32279296 32839206 33139104 33659048 33488879 32838892
               32438978 32549035 31909110 31869367 32279296 

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Page last modified: April 25, 2015
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