

975 

WWUS20 KWNS 072002

SEL0

SPC WW 072002

TXZ000-080300-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 150

NWS STORM PREDICTION CENTER NORMAN OK

300 PM CDT SAT APR 7 2012



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       WESTERN AND NORTH CENTRAL TEXAS



EFFECTIVE THIS SATURDAY AFTERNOON AND EVENING FROM 300 PM UNTIL

1000 PM CDT.



HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70

MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 60

STATUTE MILES NORTH AND SOUTH OF A LINE FROM 55 MILES SOUTH

SOUTHWEST OF FORT STOCKTON TEXAS TO 25 MILES NORTH OF MINERAL

WELLS TEXAS.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU0).



REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE

FAVORABLE FOR 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. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY

DO PRODUCE TORNADOES.



DISCUSSION...SCATTERED THUNDERSTORMS HAVE BEGUN TO FORM ALONG A COLD

FRONT OVER NORTH CENTRAL TX.  THESE STORMS WILL SPREAD SLOWLY

EASTWARD ACROSS AN AXIS OF MODERATE INSTABILITY AND SUFFICIENT

VERTICAL SHEAR TO PROMOTE ORGANIZED/SEVERE STORMS.  OTHER STORMS ARE

FORMING OVER THE DAVIS MTNS OF SOUTHWEST TX.  STEEP MID LEVEL LAPSE

RATES SUGGEST THAT LARGE HAIL AND DAMAGING WINDS WILL BE POSSIBLE IN

THE STRONGER STORMS THROUGH THE EVENING.



AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT

TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60

KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM

MOTION VECTOR 27025.





...HART

