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Mesoscale Discussion 1859
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   MESOSCALE DISCUSSION 1859
   NWS STORM PREDICTION CENTER NORMAN OK
   0937 PM CDT SAT SEP 01 2012
   
   AREAS AFFECTED...SRN KY AND SRN IND
   
   CONCERNING...TORNADO WATCH 603...
   
   VALID 020237Z - 020300Z
   
   THE SEVERE WEATHER THREAT FOR TORNADO WATCH 603 CONTINUES.
   
   SUMMARY...AT LEAST A MODEST THREAT FOR ISOLATED STRONG TO DAMAGING
   WIND GUSTS AND A TORNADO MAY PERSIST AN HOUR OR SO BEYOND WW
   EXPIRATION TIME OF 03Z. HOWEVER...OVERALL THREAT IS NOT AS ROBUST AS
   EARLIER...AND ANOTHER WW IS NOT EXPECTED BEYOND THE EXPIRATION TIME
   OF 03Z.
   
   DISCUSSION...STORMS HAVE EVOLVED INTO A PREDOMINANT LINEAR MODE
   ACROSS WRN KY...BUT A COUPLE OF DISCRETE CELLS REMAIN. A FEW
   ORGANIZED STRUCTURES PERSIST WITHIN THE LINE...AND LOW LEVEL SHEAR
   REMAINS SUFFICIENT FOR A THREAT OF LOW LEVEL MESOCYCLONES. OVERALL
   SEVERE POTENTIAL IS NOT AS ROBUST AS EARLIER THIS EVENING...AND A
   GRADUAL WEAKENING TREND WILL LIKELY OCCUR AS STORMS ENCOUNTER AN
   INCREASINGLY MARGINAL THERMODYNAMIC ENVIRONMENT.
   
   ..DIAL.. 09/02/2012
   
   
   ATTN...WFO...LMK...OHX...PAH...
   
   LAT...LON   36658797 37448795 38298765 38368704 36848717 36658797 
   
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Page last modified: September 02, 2012
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