WATCHES: Tornado Watch Number 232

WWUS20 KWNS 251940
SEL2
SPC WW 251940
WIZ000-260100-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 232
NWS STORM PREDICTION CENTER NORMAN OK
240 PM CDT FRI APR 25 2008

THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF

SOUTHERN INTO CENTRAL WISCONSIN

EFFECTIVE THIS FRIDAY AFTERNOON AND EVENING FROM 240 PM UNTIL 800
PM CDT.

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 75 STATUTE
MILES EAST AND WEST OF A LINE FROM 35 MILES NORTH OF CAMP DOUGLAS
WISCONSIN TO 20 MILES WEST SOUTHWEST OF JANESVILLE WISCONSIN.
FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH
OUTLINE UPDATE (WOUS64 KWNS WOU2).

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 231...

DISCUSSION...THUNDERSTORMS WILL CONTINUE INCREASING/DEVELOPING
ACROSS WW THIS EVENING AHEAD OF STRONG MID/UPPER LEVEL TROUGH AND
ASSOCIATED SURFACE COLD FRONT MOVING INTO THE NRN MS RIVER VALLEY.
SURFACE LOW WILL LIFT NWD INTO NWRN WI THROUGH THE EVENING WITH
TRAILING WARM FRONT SHIFTING NORTH INTO CENTRAL WI. THIS WILL
SUPPORT MARGINAL INSTABILITY WITHIN SUFFICIENT LOW/DEEP LAYER SHEAR
FOR A FEW SUPERCELLS AND SMALL LINES OVER SRN AND CENTRAL WI...WITH
ATTENDANT THREATS OF ISOLATED TORNADOES...LARGE HAIL AND/OR ISOLATED
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
400. MEAN STORM MOTION VECTOR 23030.

...EVANS

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