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Mesoscale Discussion 1137
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   MESOSCALE DISCUSSION 1137
   NWS STORM PREDICTION CENTER NORMAN OK
   0510 PM CDT WED JUN 13 2007
   
   AREAS AFFECTED...SWRN KS...WRN/CENTRAL OK AND THE ERN OK/TX
   PANHANDLE
   
   CONCERNING...SEVERE THUNDERSTORM WATCH 394...
   
   VALID 132210Z - 140015Z
   
   THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 394
   CONTINUES.
   
   CLUSTER OF STG-SVR TSTMS WILL CONTINUE TO MOVE SLOWLY NEWD ACROSS
   MUCH OF WRN OK...SWRN KS AND THE ERN TX PANHANDLE. THE MAIN SVR
   THREATS WILL REMAIN LARGE HAIL/DMGG WINDS...BUT AN ISOLATED TORNADO
   IS ALSO POSSIBLE...ESPECIALLY IN THE VICINITY OF AN OUTFLOW BOUNDARY
   OVER NWRN OK FOR THE NEXT SEVERAL HOURS.
   
   LATEST SFC MESOANALYSIS SHOWS AN OUTFLOW BOUNDARY EXTENDING FROM
   CLARK COUNTY KS SEWD TO NEAR WATONGA TO JUST WEST OF OKC. ALONG AND
   EAST OF THIS BOUNDARY LOW LEVEL SHEAR WAS MAXIMIZED WITH 0-1 KM SRH
   AROUND 100 M2/S2...SUPPORTED BY ELY WINDS OF 20-30 MPH NOTED ON
   RECENT OKLAHOMA MESONET SITES. IN ADDITION...0-3 KM CAPE WAS AROUND
   150 J/KG WILL ENHANCE LOW LEVEL VERTICAL STRETCHING/ IN THE VICINITY
   OF THIS BOUNDARY. THUS DESPITE RELATIVELY MARGINAL MID LEVEL
   WINDS...ANY SUPERCELL THAT MOVES ALONG THIS BOUNDARY WILL CONTINUE
   TO HAVE THE POTENTIAL FOR AN ISOLATED TORNADO. SOUTH OF THE
   SUPERCELL IN MAJOR COUNTY...OTHER SVR TSTMS MAY DEVELOP SEWD ALONG
   THE OUTFLOW BOUNDARY INTO CENTRAL OK GIVEN WEAK CINH AND RECENT
   SATELLITE TRENDS. FURTHER WEST...SEVERAL SVR TSTMS CONTINUE TO
   EXHIBIT SUPERCELL STRUCTURE AND WILL POSE A THREAT FOR LARGE
   HAIL/DMGG WINDS ACROSS FAR WRN OK/ERN TX PANHANDLE. LOWER DWPTS
   /LOW-MID 60S/ AHEAD OF THIS ACTIVITY AND CONSEQUENT HIGHER LCL
   HEIGHTS WILL LIMIT ANY TORNADO THREAT. OVER SWRN KS NUMEROUS TSTMS
   WILL CONTINUE TO POSE A SVR WIND/HAIL THREAT...WITH THE GREATEST
   POTENTIAL OF NEW DEVELOPMENT LIKELY WHERE LITTLE CONVECTIVE
   OVERTURNING HAS OCCURRED IN THE FAR NRN PORTIONS OF WW 394.
   
   ..CROSBIE.. 06/13/2007
   
   
   ATTN...WFO...ICT...OUN...DDC...GLD...LUB...AMA...
   
   34700031 34429998 34409957 34459832 34629717 35289704
   36939760 37149845 38199860 38310116 38080175 37190116
   36410047 
   
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