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697 

WWUS20 KWNS 232153

SEL7

SPC WW 232153

COZ000-KSZ000-NEZ000-OKZ000-TXZ000-240500-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 207

NWS STORM PREDICTION CENTER NORMAN OK

455 PM CDT SUN MAY 23 2010



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       EASTERN COLORADO

       WESTERN KANSAS

       SOUTHWEST NEBRASKA

       OKLAHOMA PANHANDLE

       NORTHERN TEXAS PANHANDLE



EFFECTIVE THIS SUNDAY AFTERNOON FROM 455 PM UNTIL MIDNIGHT CDT.



TORNADOES...HAIL TO 3 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 45 MILES SOUTHEAST OF CLAYTON

NEW MEXICO TO 30 MILES WEST NORTHWEST OF MCCOOK NEBRASKA.  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...CONTINUE...WW 206...



DISCUSSION...SCATTERED THUNDERSTORMS ARE FORECAST TO INTENSIFY THIS

AFTERNOON ACROSS WESTERN KS AND EASTERN CO...IN REGIME OF RAPIDLY

INCREASING LOW LEVEL MOISTURE AND SHEAR.  STRONG EFFECTIVE SHEAR AND

IMPROVING LOW LEVEL SHEAR WITH TIME WILL PROMOTE THE RISK OF

SUPERCELLS CAPABLE OF VERY LARGE HAIL AND ISOLATED TORNADOES.



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

SURFACE AND ALOFT TO 3 INCHES. EXTREME TURBULENCE AND SURFACE

WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO

500. MEAN STORM MOTION VECTOR 24030.





...HART

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