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Mesoscale Discussion 1688
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   MESOSCALE DISCUSSION 1688
   NWS STORM PREDICTION CENTER NORMAN OK
   0320 PM CDT SAT SEP 06 2014

   AREAS AFFECTED...DELMARVA INTO NEW ENGLAND

   CONCERNING...SEVERE THUNDERSTORM WATCH 497...498...

   VALID 062020Z - 062145Z

   THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH
   497...498...CONTINUES.

   SUMMARY...ISOLATED SEVERE STORMS WILL CONTINUE THE NEXT 2-3 HOURS.
   DAMAGING WIND GUSTS WILL BE THE MAIN THREAT WITH THESE STORMS AS
   THEY TRACK E/NE TOWARD THE ATLANTIC COAST.

   DISCUSSION...LACK OF FOCUS AND STRONGER FORCING FOR ASCENT IS
   EVIDENT IN THE BROKEN AND ONLY SEMI-ORGANIZED NATURE OF ONGOING
   CONVECTION FROM NEAR THE CHESAPEAKE N/NE INTO NEW ENGLAND. WHILE THE
   AIRMASS REMAINS VERY MOIST AND UNSTABLE AHEAD OF THE FRONT...POOR
   MIDLEVEL LAPSE RATES AND WEAKENING EFFECTIVE SHEAR ARE LIKELY
   LIMITING MORE ROBUST AND INTENSE UPDRAFTS. HOWEVER...THERMODYNAMIC
   AND KINEMATIC ENVIRONMENT WILL REMAIN ADEQUATE FOR SPORADIC STRONG
   /LOCALLY DAMAGING/ WIND GUSTS THE NEXT 2-3 HOURS AS THE STORMS TRACK
   TOWARD THE ATLANTIC COAST. THE SEVERE THREAT WILL QUICKLY DIMINISH
   WITH PASSAGE OF THE COLD FRONT.

   ..LEITMAN.. 09/06/2014


   ATTN...WFO...CAR...GYX...BOX...BTV...OKX...ALY...PHI...BGM...
   AKQ...CTP...LWX...

   LAT...LON   38917760 39457773 40067723 41367497 42347385 43457282
               45477009 45716835 45116737 44136779 42506968 41807058
               40737211 38597517 38427675 38917760 

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Page last modified: September 06, 2014
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