SEL8
SPC WW 222008
KSZ000-NEZ000-230400-
URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 288
NWS STORM PREDICTION CENTER NORMAN OK
305 PM CDT TUE MAY 22 2007
THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF
NORTHWEST AND WEST CENTRAL KANSAS
SOUTHWEST AND SOUTH CENTRAL NEBRASKA
EFFECTIVE THIS TUESDAY AFTERNOON AND EVENING FROM 305 PM UNTIL
1100 PM 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 60 STATUTE
MILES EAST AND WEST OF A LINE FROM 30 MILES WEST NORTHWEST OF
BURWELL NEBRASKA TO 95 MILES SOUTH OF HILL CITY KANSAS. 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 287...
DISCUSSION...LARGE SCALE HEIGHT FALLS ARE BEGINNING TO SPREAD EWD
ACROSS ERN CO AT MID-AFTN. COMBINATION OF HEATING AND THE
INCREASING UVV WILL ACT TO ERODE INHIBITION RESULTING IN CONVECTIVE
INITIATION BY LATE AFTN ALONG COLD FRONT/LEE-TROUGH. VERTICAL SHEAR
WILL BE SUFFICIENT FOR SUPERCELLS WITH VERY LARGE HAIL. LOW-LEVEL
SRH WILL ALSO BE CONDUCIVE FOR TORNADOES...PARTICULARLY ALONG THE
TRACK OF THE SFC LOW.
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 24025.
..RACY/EVANS
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