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Mesoscale Discussion 551
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   MESOSCALE DISCUSSION 0551
   NWS STORM PREDICTION CENTER NORMAN OK
   0735 PM CDT SAT MAY 07 2016

   AREAS AFFECTED...FAR NORTHEAST CO/FAR SOUTHWEST NEB

   CONCERNING...TORNADO WATCH 143...

   VALID 080035Z - 080200Z

   THE SEVERE WEATHER THREAT FOR TORNADO WATCH 143 CONTINUES.

   SUMMARY...TORNADO/LARGE HAIL POTENTIAL WILL CONTINUE PARTICULARLY
   ACROSS YUMA/PHILLIPS COUNTIES IN NORTHEAST CO...AND POSSIBLY
   ADJACENT PORTIONS OF CHASE/DUNDY COUNTIES IN NEB...IN THE SHORT
   TERM. TORNADO WATCH 143 IS SCHEDULED TO EXPIRE AT 01Z...BUT A
   TEMPORAL EXTENSION /2-HR/ WILL BE NEEDED FOR PORTIONS OF FAR
   NORTHEAST CO.

   DISCUSSION...MULTIPLE SUPERCELLS WITH A HISTORY OF PRODUCING
   TORNADOES OVER THE PAST HOUR CONTINUE TO SPREAD NORTH-NORTHEASTWARD
   ACROSS YUMA AND PHILLIPS COUNTIES AS OF 0020Z. THE ENVIRONMENT
   REMAINS FAVORABLE FOR THE POSSIBILITY OF AN ADDITIONAL TORNADO OR
   TWO OVER THE NEXT 1-2 HOURS ASIDE FROM LARGE HAIL ACROSS EXTREME
   NORTHEAST CO AND POSSIBLY FAR SOUTHWEST NEB. LATEST WSR-88D VWP DATA
   FROM GOODLAND...WHEN ADJUSTED FOR EASTERLY SURFACE WINDS ALONG THE
   IMMEDIATE CO/NEB/KS BORDER VICINITY...IS SUPPORTIVE OF 300+ M2/S2
   0-1 KM SRH. THE TORNADO/SEVERE RISK WILL OTHERWISE CONTINUE TO
   GRADUALLY DIMINISH FROM WEST-TO-EAST AS A COLD FRONT /AND RELATED
   STORMS CURRENTLY NEAR AKRON CO/ SPREADS NORTHEASTWARD THIS EVENING
   AND EVENTUALLY OVERTAKES THE SEMI-DISCRETE STORMS CURRENTLY ONGOING
   ACROSS EXTREME NORTHEAST CO.

   ..GUYER.. 05/08/2016


   ATTN...WFO...LBF...GLD...BOU...

   LAT...LON   40040294 40930275 41030195 40940171 39940169 40040294 

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Page last modified: May 08, 2016
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