

000 

WWUS20 KWNS 232238

SEL7

SPC WW 232238

TXZ000-240400-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 167

NWS STORM PREDICTION CENTER NORMAN OK

535 PM CDT MON APR 23 2007



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       WEST CENTRAL INTO NORTHWEST TEXAS



EFFECTIVE THIS MONDAY AFTERNOON AND EVENING FROM 535 PM UNTIL

1100 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 80 STATUTE

MILES EAST AND WEST OF A LINE FROM 60 MILES EAST NORTHEAST OF

PLAINVIEW TEXAS TO 75 MILES SOUTHEAST OF BIG SPRING 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 165...WW 166...



DISCUSSION...SRN STREAM SHORTWAVE TROUGH NOW MOVING INTO SWRN TX MAY

CONTINUE ENHANCING THUNDERSTORM DEVELOPMENT ALONG AND EAST OF THE

DRY LINE THIS EVENING.  DEEP LAYER SHEAR REMAINS QUITE STRONG AND

WILL SUSTAIN SUPERCELLS...WITH INCREASING POTENTIAL FOR A FEW

TORNADOES IF STORMS CAN BE SUSTAINED ENEWD ACROSS WW THIS EVENING.

VERY LARGE HAIL IS ALSO LIKELY WITH THESE STORMS.



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 22025.





...EVANS

