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Mesoscale Discussion 1142
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   MESOSCALE DISCUSSION 1142
   NWS STORM PREDICTION CENTER NORMAN OK
   0447 PM CDT TUE JUN 23 2015

   AREAS AFFECTED...DC...DE...MD...NJ...PA...VA...WV

   CONCERNING...SEVERE THUNDERSTORM WATCH 346...

   VALID 232147Z - 232315Z

   THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 346
   CONTINUES.

   SUMMARY...SEVERE THUNDERSTORMS WITH DAMAGING WINDS ARE MOST LIKELY
   TO IMPACT CENTRAL AND SRN NJ AND ADJACENT AREAS OF NRN MD AND DEL
   OVER THE NEXT 1-2 HOURS AS POTENT SQUALL LINE MOVES EAST.

   DISCUSSION...INTENSE STORMS HAVE CONSOLIDATED INTO A BOWING ARC FROM
   THE NORTHERN EXTENT OF CHESAPEAKE BAY TO THE DELAWARE RIVER. THE
   CONSOLIDATION OF THIS ACTIVITY INCREASES THE CHANCE FOR MORE
   WIDESPREAD DAMAGING WINDS. CONVECTION WILL MOVE EAST AT 40-50KT INTO
   PRONOUNCED INSTABILITY AXIS FROM DELMARVA TO CENTRAL NJ WHERE SFC
   TEMPERATURES HAVE CLIMBED INTO THE LOWER 90S F AND OBJECTIVE
   ANALYSIS DCAPE VALUES ARE IN EXCESS OF 1200 J PER KG. WITH
   CONVECTIVE LINE ORIENTED PERPENDICULAR TO 50-60KT MID-LEVEL JET AND
   MAGNITUDE OF DOWNSTREAM INSTABILITY...THE POTENTIAL FOR WIDESPREAD
   DAMAGING WINDS...LOCALLY IN EXCESS OF 70KT...APPEARS QUITE HIGH.

   ..CARBIN/DARROW.. 06/23/2015


   ATTN...WFO...OKX...PHI...BGM...AKQ...CTP...LWX...RNK...PBZ...
   RLX...

   LAT...LON   36978048 36978054 37228123 37298131 37348136 37458130
               38098087 39727893 41227554 41367469 41207437 40257363
               39707376 39597380 39507386 37887494 37047551 36978048
               36978048 

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Page last modified: June 23, 2015
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