

000 

WWUS20 KWNS 311900

SEL8

SPC WW 311900

OKZ000-TXZ000-010200-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 148

NWS STORM PREDICTION CENTER NORMAN OK

200 PM CDT MON MAR 31 2008



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       SOUTHERN OKLAHOMA

       NORTH CENTRAL TEXAS



EFFECTIVE THIS MONDAY AFTERNOON AND EVENING FROM 200 PM UNTIL 900

PM CDT.



TORNADOES...HAIL TO 3 INCHES IN DIAMETER...THUNDERSTORM WIND

GUSTS TO 80 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 35 MILES WEST NORTHWEST OF

MCALESTER OKLAHOMA TO 30 MILES SOUTH SOUTHWEST OF TEMPLE TEXAS.

FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH

OUTLINE UPDATE (WOUS64 KWNS WOU8).



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 146...WW 147...



DISCUSSION...SCATTERED THUNDERSTORMS ARE EXPECTED TO BEGIN

DEVELOPING ALONG SURFACE DRYLINE OVER NORTH CENTRAL TX IN THE NEXT

HOUR.  THESE STORMS WILL LIKELY BECOME SEVERE RAPIDLY IN ENVIRONMENT

OF HIGH CAPE VALUES AND FAVORABLE VERTICAL SHEAR.  SUPERCELLS

CAPABLE OF VERY LARGE HAIL AND TORNADOES ARE EXPECTED.  THREAT WILL

LIKELY PERSIST THROUGH MUCH OF THE EVENING.



AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL

SURFACE AND ALOFT TO 3 INCHES. EXTREME TURBULENCE AND SURFACE

WIND GUSTS TO 70 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO

500. MEAN STORM MOTION VECTOR 24030.





...HART

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