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000 

WWUS20 KWNS 290420

SEL7

SPC WW 290420

OKZ000-TXZ000-291100-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 87

NWS STORM PREDICTION CENTER NORMAN OK

1120 PM CDT WED MAR 28 2007



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       PARTS OF WESTERN OKLAHOMA

       MUCH OF EASTERN TEXAS PANHANDLE



EFFECTIVE THIS WEDNESDAY NIGHT AND THURSDAY MORNING FROM 1120 PM

UNTIL 600 AM CDT.



TORNADOES...HAIL TO 2 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 70 STATUTE

MILES EAST AND WEST OF A LINE FROM 45 MILES NORTH OF GAGE

OKLAHOMA TO 70 MILES SOUTHEAST OF LUBBOCK TEXAS.  FOR A COMPLETE

DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE

(WOUS64 KWNS WOU7).



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...THIS TORNADO WATCH REPLACES TORNADO

WATCH NUMBER 82...TORNADO WATCH NUMBER 84. WATCH NUMBER 82 84

WILL NOT BE IN EFFECT AFTER 1120 PM CDT. CONTINUE...WW 83...WW

85...WW 86...



DISCUSSION...SEVERE THUNDERSTORMS HAVE EVOLVED INTO A MORE LINEAR

MODE.  HOWEVER WITH STRONG SHEAR AND INSTABILITY...POTENTIAL

CONTINUES FOR ISOLATED TORNADOES ALONG WITH THE VERY LARGE HAIL AND

DAMAGING WINDS WITH ANY SUPERCELL EMBEDDED OR AHEAD OF LINE.



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

SURFACE AND ALOFT TO 2 INCHES. EXTREME TURBULENCE AND SURFACE

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

550. MEAN STORM MOTION VECTOR 24035.





...HALES

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