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WWUS20 KWNS 030006

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OKZ000-TXZ000-030800-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 85

NWS STORM PREDICTION CENTER NORMAN OK

605 PM CST SUN MAR 2 2008



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       CENTRAL OKLAHOMA

       NORTH CENTRAL TEXAS



EFFECTIVE THIS SUNDAY NIGHT AND MONDAY MORNING FROM 605 PM UNTIL

200 AM CST.



TORNADOES...HAIL TO 2 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 35 MILES SOUTH OF MINERAL

WELLS TEXAS TO 30 MILES NORTH NORTHWEST OF CHANDLER OKLAHOMA.

FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH

OUTLINE UPDATE (WOUS64 KWNS WOU5).



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 83...WW 84...



DISCUSSION...SEVERE THUNDERSTORMS...INCLUDING SUPERCELLS AND SMALL

BOWING SEGMENTS...WILL CONTINUE TO INCREASE ACROSS THIS REGION

OVERNIGHT AHEAD OF STRONG UPPER SYSTEM AND ASSOCIATED SURFACE COLD

FRONT.  FRONT WILL MOVE PROGRESSIVELY ESEWD ACROSS WW THROUGH THE

NIGHT AND DIMINISH SEVERE THREAT AS IT PASSES.  AHEAD OF IT

HOWEVER...VERY STRONG LOW LEVEL SHEAR AND MOISTENING BOUNDARY LAYER

WILL SUPPORT A RISK OF ISOLATED TORNADOES.  VERY STEEP MID LEVEL

LAPSE RATES AND MID LEVEL ROTATION WITH STRONGER CORES WILL ALSO

ENHANCE THE POTENTIAL FOR LARGE HAIL AND DAMAGING WINDS.



AVIATION...TORNADOES AND 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

450. MEAN STORM MOTION VECTOR 22035.





...EVANS

