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Mesoscale Discussion 356
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   MESOSCALE DISCUSSION 0356
   NWS STORM PREDICTION CENTER NORMAN OK
   0937 PM CDT SUN APR 10 2016

   AREAS AFFECTED...NW AND NCNTRL TX...SRN AND CNTRL OK

   CONCERNING...SEVERE THUNDERSTORM WATCH 78...79...

   VALID 110237Z - 110330Z

   CORRECTED FOR WORDING

   THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH
   78...79...CONTINUES.

   SUMMARY...A WIND DAMAGE AND LARGE HAIL THREAT WILL CONTINUE LATE
   THIS EVENING INTO THE OVERNIGHT PERIOD ACROSS NW AND NCNTRL TX
   EXTENDING NWD INTO CNTRL OK. WW ISSUANCE WILL LIKELY BE NEEDED
   BEYOND THE EXPIRATION OF WW 78 AND WW 79.

   DISCUSSION...THE LATEST RADAR TRENDS SHOW A CLUSTER OF STRONG TO
   SEVERE THUNDERSTORMS ACROSS NW TX EXTENDING EWD ACROSS SW OK. THIS
   ACTIVITY IS LOCATED ALONG AN AXIS OF MODERATE INSTABILITY WHERE
   MLCAPE IS ESTIMATED IN THE 1500 TO 2000 J/KG RANGE. IN
   ADDITION...THE WSR-88D VWP AT FREDERICK SHOWS 0-6 KM SHEAR OF 60 KT
   WITH SUBSTANTIAL DIRECTIONAL TURNING IN THE LOW-LEVELS. THIS IS
   RESULTING IN 0-3 KM STORM RELATIVE HELICITY OF OVER 400 M2/S2
   SUGGESTING AN ISOLATED TORNADO THREAT WILL CONTINUE. THIS
   ENVIRONMENT WILL CONTINUE TO SUPPORT SUPERCELL DEVELOPMENT WITH
   ISOLATED LARGE HAIL AND WIND DAMAGE POSSIBLE WITH ROTATING STORMS.
   THE BOUNDARY LAYER WILL SLOWLY COOL OVER THE NEXT FEW HOURS
   SUGGESTING THE TORNADO THREAT WILL GRADUALLY DIMINISH...WITH HAIL
   AND DAMAGING WIND GUSTS BECOMING THE MAIN THREATS AFTER 05Z.

   ..BROYLES/THOMPSON.. 04/11/2016


   ATTN...WFO...FWD...OUN...SJT...LUB...AMA...MAF...

   LAT...LON   33889683 34509658 35359682 35649751 35539885 35259980
               34580039 33330078 32640077 32170034 32449878 33889683 

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Page last modified: April 11, 2016
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