

000 

WWUS20 KWNS 131855

SEL4

SPC WW 131855

KSZ000-OKZ000-TXZ000-140300-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 394

NWS STORM PREDICTION CENTER NORMAN OK

155 PM CDT WED JUN 13 2007



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       PARTS OF SOUTHWEST KANSAS

       MUCH OF WESTERN AND PARTS OF CENTRAL OKLAHOMA

       PARTS OF EASTERN TEXAS PANHANDLE



EFFECTIVE THIS WEDNESDAY AFTERNOON AND EVENING FROM 155 PM UNTIL

1000 PM CDT.



HAIL TO 2.5 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70

MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 90

STATUTE MILES EAST AND WEST OF A LINE FROM 30 MILES NORTH OF

DODGE CITY KANSAS TO 15 MILES EAST SOUTHEAST OF FORT SILL

OKLAHOMA.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU4).



REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE

FAVORABLE FOR SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH

AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR

THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS

AND POSSIBLE WARNINGS. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY

DO PRODUCE TORNADOES.



OTHER WATCH INFORMATION...CONTINUE...WW 391...WW 392...WW 393...



DISCUSSION...WITH A VERY UNSTABLE/VIRTUALLY UNCAPPED AIRMASS ACROSS

WATCH AREA...THUNDERSTORMS EXPECTED TO DEVELOP RAPIDLY VICINITY

OUTFLOW BOUNDARY NWRN OK AND DOWN SURFACE TROUGH EASTERN TX

PANHANDLE.  SUFFICIENT SHEAR GIVEN INSTABILITY FOR SUPERCELLS.

PRIMARY THREAT WILL BE VERY LARGE HAIL...DOWNBURST DAMAGING WINDS

AND VERY HEAVY RAIN.



AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT

TO 2.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60

KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 550. MEAN STORM

MOTION VECTOR 22020.





...HALES

