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Mesoscale Discussion 1058
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   MESOSCALE DISCUSSION 1058
   NWS STORM PREDICTION CENTER NORMAN OK
   0307 AM CDT WED JUN 18 2014

   AREAS AFFECTED...NE IA...SW WI...SE MN

   CONCERNING...SEVERE THUNDERSTORM WATCH 318...

   VALID 180807Z - 180900Z

   THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 318
   CONTINUES.

   SUMMARY...WITH WW 318 SCHEDULED TO EXPIRE AT 09Z AND A DEVELOPING
   MCS OVER N-CNTRL IA TO FAR S-CNTRL MN LIKELY PROPAGATING E WITH A
   RISK FOR STRONG TO SEVERE WINDS...PORTIONS OF THE WW WILL PROBABLY
   BE REPLACED/LOCALLY EXTENDED.

   DISCUSSION...DEVELOPING MCS WITH A HISTORY OF WIND DAMAGE AND
   MEASURED WIND GUSTS OF 40-47 KT...APPEARS TO BE IN THE PROCESS OF
   ACCELERATING EWD AS IT APPROACHES THE I-35 CORRIDOR IN N-CNTRL IA.
   WITH A STRONGLY UNSTABLE AIR MASS PERSISTING S OF THIS ACTIVITY
   AMIDST WIDESPREAD 71-73 DEG F SURFACE DEW POINTS...THE MCS SHOULD
   PROPAGATE E ALONG THE PERIPHERY OF THE MID-MO VALLEY SWLY LLJ.
   ALTHOUGH MID/UPPER-LEVEL WINDS ARE RELATIVELY WEAK FOR AN INTENSE
   QLCS...THE DEGREE OF BUOYANCY WILL LIKELY FOSTER A CONTINUED RISK
   FOR AT LEAST ISOLATED DAMAGING WINDS THROUGH 12Z.

   ..GRAMS.. 06/18/2014


   ATTN...WFO...MKX...DVN...ARX...DMX...

   LAT...LON   43879283 44169191 44149084 43848971 43328958 42828972
               42189047 42119090 42059179 42209232 42379269 42809293
               43879283 

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Page last modified: June 18, 2014
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