Thursday, April 16, 2009

WATCHES: Tornado Watch Number 157

WWUS20 KWNS 162144
SEL7
SPC WW 162144
TXZ000-170500-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 157
NWS STORM PREDICTION CENTER NORMAN OK
445 PM CDT THU APR 16 2009

THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF

SOUTHERN TEXAS PANHANDLE

EFFECTIVE THIS THURSDAY AFTERNOON FROM 445 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 70 STATUTE
MILES EAST AND WEST OF A LINE FROM 50 MILES NORTH NORTHEAST OF
PLAINVIEW TEXAS TO 60 MILES WEST SOUTHWEST OF SAN ANGELO 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 155...WW 156...

DISCUSSION...STORMS CONTINUE TO INCREASE AND INTENSIFY ALONG AND E
OF DRY LINE ACROSS WRN TX PANHANDLE. WITH STRONG SHEAR PROFILES AND
STEEP LAPSE RATES POTENTIAL FOR SUPERCELLS INCLUDING LARGE HAIL AND
TORNADOES IS INCREASING. STORMS WILL DEVELOP FURTHER S INTO THE
EVENING TO S AND E OF MAF.

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
500. MEAN STORM MOTION VECTOR 23030.


...HALES

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