MESOSCALE DISCUSSION 1368
   NWS STORM PREDICTION CENTER NORMAN OK
   1037 PM CDT FRI JUN 13 2008
   
   AREAS AFFECTED...CENTRAL/EASTERN OK INTO WESTERN AR/NORTH TX
   
   CONCERNING...SEVERE POTENTIAL...WATCH LIKELY 
   
   VALID 140337Z - 140500Z
   
   THE THREAT FOR SEVERE HAIL /AND POSSIBLY DAMAGING WINDS/ MAY
   CONTINUE TO INCREASE ACROSS CENTRAL/EASTERN OK AND PORTIONS OF NORTH
   TX INTO WESTERN AR LATE TONIGHT. A SEVERE TSTM WATCH COULD BE NEEDED
   SOON.
   
   STRONG/SEVERE TSTMS CONTINUE TO INCREASE IN COVERAGE/INTENSITY IN A
   WEST-EAST CORRIDOR GENERALLY ALONG I-40 IN CENTRAL/EASTERN OK... AS
   WELL AS THE WESTERN PART OF NORTH TX. THIS ACTIVITY IS OCCURRING ON
   THE IMMEDIATE COOL SIDE OF A SURFACE BOUNDARY...OWING TO MODEST
   ISENTROPIC LIFT AIDED BY A WEAK LOW LEVEL JET/MOISTURE TRANSPORT
   REGIME. WITHIN THIS CORRIDOR...THE 00Z NORMAN RAOB REFLECTED STRONG
   INSTABILITY /4000+ J PER KG MUCAPE/ AND STEEP MID LEVEL LAPSE RATES
   FAVORABLE FOR SEVERE HAIL. EFFECTIVE BULK SHEAR OF 40-50 KT WILL
   SUPPORT SUPERCELL STRUCTURES...ENHANCING THE RISK FOR LARGE HAIL. IN
   ADDITION...A DAMAGING WIND THREAT COULD EVENTUALLY INCREASE LATER
   TONIGHT PROVIDED FURTHER COLD POOL EXPANSIONS INTO A VERY UNSTABLE
   AIRMASS. A 47 KT GUST WAS RECENTLY MEASURED AT OKLAHOMA CITY AT
   318Z.
   
   ..GUYER.. 06/14/2008
   
   
   ATTN...WFO...LZK...SHV...TSA...FWD...OUN...
   
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