WATCHES: Tornado Watch Number 423

WWUS20 KWNS 032214
SEL3
SPC WW 032214
WIZ000-040500-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 423
NWS STORM PREDICTION CENTER NORMAN OK
515 PM CDT FRI JUN 3 2011

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

NORTHERN AND CENTRAL WISCONSIN

EFFECTIVE THIS FRIDAY AFTERNOON FROM 515 PM UNTIL MIDNIGHT 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 65 STATUTE
MILES NORTH AND SOUTH OF A LINE FROM 20 MILES WEST SOUTHWEST OF
EAU CLAIRE WISCONSIN TO 30 MILES EAST NORTHEAST OF GREEN BAY
WISCONSIN. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU3).

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.

DISCUSSION...STORM INITIATION HAS RECENTLY OCCURRED WSW EAU ON THE
NRN EDGE OF LOW-LEVEL THERMAL AXIS WHERE TEMPERATURES HAS WARMED
INTO THE LOW/MID 90S. OBJECTIVE GUIDANCE SUGGESTS THAT A CAP EXISTS
ACROSS DOWNSTREAM WARM SECTOR...THOUGH IT APPEARS THAT THE STRONG
DIABATIC HEATING MAY BE SUFFICIENT TO SUSTAIN ISOLATED STORMS PRIOR
TO 00Z. AMBIENT ENVIRONMENT IS RATHER MOIST WITH DEWPOINTS IN THE
MID/UPPER 60S...RESULTING IN MLCAPE OF 2500-3500 J/KG. AREA
PROFILER/VWP DATA INDICATE VERTICALLY VEERING WIND PROFILES WITH
SUFFICIENT LOW AND DEEP-LAYER SHEAR TO SUPPORT SUPERCELLS CAPABLE OF
TORNADOES...LARGE HAIL AND DAMAGING WIND GUSTS.

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
550. MEAN STORM MOTION VECTOR 26030.

...MEAD

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