WATCHES: Tornado Watch Number 542

WWUS20 KWNS 272031
SEL2
SPC WW 272031
MNZ000-WIZ000-LSZ000-280400-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 542
NWS STORM PREDICTION CENTER NORMAN OK
330 PM CDT TUE JUL 27 2010

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

LARGE PART OF NORTHERN AND CENTRAL MINNESOTA
PARTS OF NORTHWESTERN WISCONSIN
LAKE SUPERIOR

EFFECTIVE THIS TUESDAY AFTERNOON AND EVENING FROM 330 PM UNTIL
1100 PM CDT.

TORNADOES...HAIL TO 2.5 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 60 STATUTE
MILES NORTH AND SOUTH OF A LINE FROM 15 MILES NORTH OF ORTONVILLE
MINNESOTA TO 50 MILES SOUTHEAST OF KENNEDY 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 541...

DISCUSSION...AIR MASS HAS BECOME VERY TO EXTREMELY UNSTABLE ACROSS
THE WATCH AS THE E/W WARM FRONT HAS SHIFTED NWD. WITH APPROACH OF
THE UPSTREAM TROUGH AND WIND MAX...THUNDERSTORMS EXPECTED TO DEVELOP
RAPIDLY VICINITY OF THE WARM FRONT AND MOVE EWD. SUPERCELLS
INCLUDING POSSIBLE TORNADOES ARE LIKELY ALONG WITH POTENTIAL FOR
VERY STRONG DAMAGING WINDS. THERE IS THE POTENTIAL FOR A STRONG
TORNADO OR TWO BY THIS EVENING.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 2.5 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 70 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
650. MEAN STORM MOTION VECTOR 26035.

...HALES

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