

499 

WWUS20 KWNS 082208

SEL2

SPC WW 082208

TXZ000-090500-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 272

NWS STORM PREDICTION CENTER NORMAN OK

505 PM CDT FRI MAY 8 2009



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       NORTHERN AND CENTRAL TEXAS



EFFECTIVE THIS FRIDAY AFTERNOON FROM 505 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 EAST AND WEST OF A LINE FROM 60 MILES NORTH OF FORT WORTH

TEXAS TO 50 MILES EAST SOUTHEAST OF SAN ANGELO TEXAS.  FOR A

COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE

UPDATE (WOUS64 KWNS WOU2).



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 268...WW 270...WW 271...



DISCUSSION...SCTD INTENSE TSTMS...POSSIBLE SUPERCELLS...EXPECTED TO

DEVELOP GENERALLY SWD ALONG WEAK NNE-SSW COLD FRONT.

MODEST...DIFFLUENT UPR FLOW...AND VERY MOIST BOUNDARY LAYER/STRONG

SFC-BASED CAPE E OF FRONT SUGGEST POTENTIAL FOR A FEW SUSTAINED

STORMS WITH VERY LARGE HAIL/ISOLD TORNADOES...DESPITE WEAK SFC FLOW.



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

550. MEAN STORM MOTION VECTOR 30020.





...CORFIDI

