

614 

WWUS20 KWNS 092024

SEL2

SPC WW 092024

OKZ000-TXZ000-100400-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 152

NWS STORM PREDICTION CENTER NORMAN OK

325 PM CDT MON APR 9 2012



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       SOUTHWEST OKLAHOMA

       WEST TEXAS INCLUDING THE PANHANDLE



EFFECTIVE THIS MONDAY AFTERNOON AND EVENING FROM 325 PM UNTIL

1100 PM CDT.



HAIL TO 2.5 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 100

STATUTE MILES EAST AND WEST OF A LINE FROM 50 MILES NORTHWEST OF

CLINTON OKLAHOMA TO 30 MILES EAST SOUTHEAST OF LUBBOCK TEXAS.

FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH

OUTLINE UPDATE (WOUS64 KWNS WOU2).



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.



OTHER WATCH INFORMATION...CONTINUE...WW 151...



DISCUSSION...THUNDERSTORMS ARE INTENSIFYING THIS AFTERNOON ACROSS

WEST TX AS WEAK ASCENT SPREADS EASTWARD INTO A MODERATELY UNSTABLE

AIR MASS.  STEEP LOW/MID LEVEL LAPSE RATES AND SUFFICIENT EFFECTIVE

SHEAR WILL PROMOTE A RISK OF ORGANIZED/SUPERCELL STORMS CAPABLE OF

LARGE HAIL AND DAMAGING WINDS PERSISTING THROUGH MUCH OF THE

EVENING.



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

TO 2.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60

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

MOTION VECTOR 27025.





...HART

