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Mesoscale Discussion 1095
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   MESOSCALE DISCUSSION 1095
   NWS STORM PREDICTION CENTER NORMAN OK
   1012 PM CDT SAT JUN 20 2015

   AREAS AFFECTED...SRN IA...NERN MO...WCNTRL IL

   CONCERNING...TORNADO WATCH 319...

   VALID 210312Z - 210415Z

   THE SEVERE WEATHER THREAT FOR TORNADO WATCH 319 CONTINUES.

   SUMMARY...TSTMS WILL CONTINUE ACROSS THE MID MS VALLEY INTO THE
   EARLY MORNING HOURS.  HAIL AND WIND ARE THE PRIMARY THREATS.  SEVERE
   TSTM WATCH 321 HAS BEEN ISSUED DOWNSTREAM FOR THIS ACTIVITY.

   DISCUSSION...MCS HAS MATURED OVER THE MID MS VALLEY LATE THIS
   EVENING.  LEADING EDGE OF STRONGER SURGE IS PROPAGATING SEWD AT
   ROUGHLY 40KT AS IT PROGRESSES THROUGH CNTRL IL.  TRAILING FLANK HAS
   STALLED ALONG THE IA/MO BORDER AS VEERED LLJ IMPINGES ON BACK SIDE
   OF CONVECTION.  GIVEN THE DECOUPLING OF THE BOUNDARY LAYER IT
   APPEARS WARM ADVECTION MAY CONTINUE TO DRIVE ADDITIONAL UPDRAFTS
   ACROSS SCNTRL IA/NRN MO FOR SEVERAL HOURS.

   ..DARROW.. 06/21/2015


   ATTN...WFO...ILX...LSX...DVN...DMX...EAX...

   LAT...LON   42289445 41408991 39378991 40259446 42289445 

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Page last modified: June 21, 2015
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