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Mesoscale Discussion 634
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   MESOSCALE DISCUSSION 0634
   NWS STORM PREDICTION CENTER NORMAN OK
   0326 AM CDT WED MAY 21 2014

   AREAS AFFECTED...NRN INDIANA...NW OH...SRN LOWER MI

   CONCERNING...SEVERE THUNDERSTORM WATCH 163...

   VALID 210826Z - 210900Z

   THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 163
   CONTINUES.

   SUMMARY...THE HAIL THREAT ACROSS THE SRN GREAT LAKES REGION IS
   EXPECTED TO BECOME INCREASINGLY MARGINAL OVER THE NEXT HOUR. WW 163
   WILL BE ALLOWED TO EXPIRE AT 09Z.

   DISCUSSION...A CLUSTER OF STRONG THUNDERSTORMS...LOCATED ON THE ERN
   EDGE OF A CORRIDOR OF INSTABILITY...IS STILL ONGOING ACROSS WW 163.
   ALTHOUGH THE ACTIVITY IS ELEVATED DUE TO A SHARP INVERSION JUST
   ABOVE THE SFC...INSTABILITY SHOULD BE ENOUGH TO CONTINUE AN ISOLATED
   HAIL THREAT FOR ANOTHER HOUR OR TWO. INSTABILITY SHOULD CONTINUE TO
   WEAKEN MAKING THE THREAT MORE MARGINAL WITH TIME EARLY THIS MORNING.
   NEW WW ISSUANCE IS NOT ANTICIPATED BEYOND WW EXPIRATION.

   ..BROYLES/CARBIN.. 05/21/2014


   ATTN...WFO...CLE...ILN...DTX...IWX...GRR...

   LAT...LON   40628393 40688447 40708474 40878481 40898526 40988533
               41048604 41188607 41178648 41738655 41758695 42148659
               42148646 42288635 42288620 42078620 42068516 42078436
               41698433 41668386 40628393 

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Page last modified: May 21, 2014
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