

000 

WWUS20 KWNS 050829

SEL3

SPC WW 050829

TXZ000-051400-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 33

NWS STORM PREDICTION CENTER NORMAN OK

230 AM CST TUE FEB 5 2008



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       NORTH CENTRAL TEXAS



EFFECTIVE THIS TUESDAY MORNING FROM 230 AM UNTIL 800 AM CST.



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 85

STATUTE MILES EAST AND WEST OF A LINE FROM 10 MILES SOUTHWEST OF

TEMPLE TEXAS TO 10 MILES WEST NORTHWEST OF SHERMAN TEXAS.  FOR A

COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE

UPDATE (WOUS64 KWNS WOU3).



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...INTENSE THUNDERSTORMS...LIKELY IN THE FORM OF ELEVATED

SUPERCELLS...WILL CONTINUE TO INCREASE AND SPREAD NEWD ACROSS WW

EARLY THIS MORNING.  THIS WILL OCCUR AHEAD OF LOW AMPLITUDE SRN

STREAM SYSTEM BEING EJECTED NEWD ACROSS CENTRAL TX...AHEAD OF

STRONGER MID/UPPER LEVEL SYSTEM MOVING INTO THE SRN HIGH PLAINS.

VERY STRONG SHEAR WILL SUPPORT SUPERCELLS...ALTHOUGH CAPPING TO

BOUNDARY LAYER PARCELS SHOULD LIMIT THE THREATS TO LARGE HAIL AND

ISOLATED DAMAGING WINDS.  ISOLATED VERY LARGE HAIL MAY ALSO

ACCOMPANY STRONGER CORES.



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 450. MEAN STORM

MOTION VECTOR 23035.





...EVANS

