

000 

WWUS20 KWNS 061901

SEL6

SPC WW 061901

KSZ000-OKZ000-TXZ000-070300-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 246

NWS STORM PREDICTION CENTER NORMAN OK

200 PM CDT SUN MAY 6 2007



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       PARTS OF SOUTHERN KANSAS

       LARGE PART OF WESTERN AND CENTRAL OKLAHOMA

       PARTS OF NORTHWEST TEXAS INCLUDING EASTERN PANHANDLE



EFFECTIVE THIS SUNDAY AFTERNOON AND EVENING FROM 200 PM UNTIL

1000 PM CDT.



TORNADOES...HAIL TO 3 INCHES IN DIAMETER...THUNDERSTORM WIND

GUSTS TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE

AREAS.



THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 120 STATUTE

MILES EAST AND WEST OF A LINE FROM 70 MILES SOUTHWEST OF WICHITA

FALLS TEXAS TO 30 MILES NORTH NORTHWEST OF WICHITA KANSAS.  FOR A

COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE

UPDATE (WOUS64 KWNS WOU6).



REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR

TORNADOES AND 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.



OTHER WATCH INFORMATION...THIS TORNADO WATCH REPLACES TORNADO

WATCH NUMBER 243. WATCH NUMBER 243 WILL NOT BE IN EFFECT AFTER

200 PM CDT. CONTINUE...WW 244...WW 245...



DISCUSSION...SURFACE BOUNDARY IN PROCESS OF RETREATING TOWARD ERN TX

PANHANDLE AND THEN ACROSS SRN KS.  WITH AIR MASS VERY UNSTABLE AND

UNCAPPED...POTENTIAL FOR SUPERCELLS EXPECTED TO RAPIDLY INCREASE

VICINITY BOUNDARY.  ALONG WITH VERY LARGE HAIL...TORNADOES WILL BE

POSSIBLE WITH SUPERCELLS GIVEN THE FAVORABLE LOW LEVEL SHEAR AND

HIGH CAPE.  ACTIVITY WILL DEVELOP EWD ACROSS OK BY EVENING.



AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL

SURFACE AND ALOFT TO 3 INCHES. EXTREME TURBULENCE AND SURFACE

WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO

600. MEAN STORM MOTION VECTOR 22025.





...HALES

