

397 

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

