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Mesoscale Discussion 1556
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   MESOSCALE DISCUSSION 1556
   NWS STORM PREDICTION CENTER NORMAN OK
   0526 PM CDT WED AUG 13 2014

   AREAS AFFECTED...NERN NV/SRN ID AND VICINITY

   CONCERNING...SEVERE THUNDERSTORM WATCH 460...

   VALID 132226Z - 140030Z

   THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 460
   CONTINUES.

   SUMMARY...STRONG/LOCALLY SEVERE STORMS CONTINUE MOVING NEWD ACROSS
   THE WW 460 VICINITY.

   DISCUSSION...LATEST RADAR LOOP SHOWS STRONG/ISOLATED SEVERE STORMS
   MOVING ACROSS FAR NERN NV AND ADJACENT SRN ID ATTM...WITH SOME
   UPSCALE LINEAR GROWTH INDICATED.  CONVECTION IS MOVING NNEWD AROUND
   30 KT...AND REMAINS CAPABLE OF PRODUCING LOCALLY DAMAGING WINDS AND
   MARGINALLY SEVERE HAIL.  SHOULD THIS LINE CONTINUE TO GROW -- AND
   EVENTUALLY APPROACH ERN FRINGES OF THE WW...ADDITIONAL SERN ID
   COUNTIES MAY NEED TO BE ADDED TO THE WATCH.

   MEANWHILE...LIMITED SEVERE RISK MAY SPREAD EWD INTO A SMALL PORTION
   OF NWRN UT IN THE NEXT 1-2 HOURS -- WHERE THE FAR ERN FRINGE OF THE
   INSTABILITY AXIS RESIDES...EXPECT PRIMARY THREAT TO REMAIN CONFINED
   TO AREAS N AND W -- I.E. WITHIN WW 460.

   ..GOSS.. 08/13/2014


   ATTN...WFO...SLC...PIH...BOI...LKN...

   LAT...LON   40041565 40351584 42281601 44011562 44361423 43691218
               42911145 41571353 40091415 40041565 

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