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Mesoscale Discussion 400
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   MESOSCALE DISCUSSION 0400
   NWS STORM PREDICTION CENTER NORMAN OK
   0827 PM CDT SAT APR 16 2016

   AREAS AFFECTED...TX LOW ROLLING PLAINS THROUGH EASTERN TX/OK
   PANHANDLES

   CONCERNING...TORNADO WATCH 93...

   VALID 170127Z - 170230Z

   THE SEVERE WEATHER THREAT FOR TORNADO WATCH 93 CONTINUES.

   SUMMARY...ALL SEVERE-WEATHER HAZARDS...INCLUDING A TORNADO
   THREAT...REMAIN LIKELY BEYOND THE SCHEDULED 02Z EXPIRATION TIME FOR
   THE SOUTHEAST CORNER OF WW 93 /EAST OF A LINE FROM GARZA/CROSBY TO
   MOTLEY COUNTIES TX/.  LOCAL WFO TEMPORAL EXTENSION OF WW 93 MAY BE
   REQUIRED.  ELSEWHERE...THE OVERALL SEVERE-WEATHER THREAT WILL
   CONTINUE TO DIMINISH ACROSS THE TX AND OK PANHANDLES THIS EVENING.

   DISCUSSION...MOSAIC RADAR TRENDS SHOWED A CONTINUED INCREASE IN
   THUNDERSTORM COVERAGE FROM SOUTHWEST TX INTO THE LOW ROLLING PLAINS
   OF NORTHWEST TX THIS EVENING...WITHIN A LOW-LEVEL CONFLUENCE ZONE. 
   THE NORTHEAST EXTENT OF THESE STORMS LOCATED ACROSS THE SOUTHEAST
   CORNER OF WW 93 WILL CONTINUE TO ENCOUNTER A FAVORABLE ENVIRONMENT
   /MODERATELY MOIST/UNSTABLE BOUNDARY LAYER AND VERTICALLY VEERING
   WINDS/ FOR ADDITIONAL STRONG TO SEVERE STORMS.  ALL SEVERE HAZARDS
   WILL REMAIN A POTENTIAL THREAT IN THIS PART OF WW 93 BEYOND 02Z. 
   MEANWHILE...ADDITIONAL STORMS THAT DEVELOP WITHIN AN AREA OF
   DEEP-LAYER ASCENT ASSOCIATED WITH LOW-LEVEL WAA AND A
   POLEWARD-MOVING SHORTWAVE TROUGH THROUGH THE TX PANHANDLE TO WESTERN
   KS WILL HAVE A LOW SEVERE POTENTIAL...AS THEIR INFLOW TO GREATER
   MOISTURE/INSTABILITY WILL REMAIN CUT OFF BY STORMS IN NORTHWEST TX.

   ..PETERS.. 04/17/2016


   ATTN...WFO...OUN...SJT...LUB...AMA...

   LAT...LON   33000157 34300156 35120150 35550143 36100114 36710092
               36960088 36990001 36219996 34939998 34229999 32950000
               33000157 

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Page last modified: April 17, 2016
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