

441 

WWUS20 KWNS 052245

SEL7

SPC WW 052245

TXZ000-060500-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 247

NWS STORM PREDICTION CENTER NORMAN OK

545 PM CDT TUE MAY 5 2009



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       NORTH CENTRAL TEXAS



EFFECTIVE THIS TUESDAY AFTERNOON FROM 545 PM UNTIL MIDNIGHT 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 65 STATUTE

MILES NORTH AND SOUTH OF A LINE FROM 55 MILES WEST OF ABILENE

TEXAS TO 35 MILES EAST SOUTHEAST OF MINERAL WELLS TEXAS.  FOR A

COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE

UPDATE (WOUS64 KWNS WOU7).



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...CONTINUE...WW 245...WW 246...



DISCUSSION...ISOLATED SUPERCELL THUNDERSTORMS ARE EXPECTED TO

RAPIDLY DEVELOP LATE THIS AFTERNOON NEAR THE TRIPLE POINT OF A COLD

FRONT AND DRYLINE.  EXTREME INSTABILITY AND FAVORABLE EFFECTIVE

SHEAR WILL PROMOTE ROTATING STORMS CAPABLE OF VERY LARGE HAIL AND

DAMAGING WINDS.  TORNADOES WILL ALSO BE POSSIBLE IF STORMS AS LONG

AS STORMS CAN REMAIN DISCRETE THROUGH THE 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 29025.





...HART

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