

000 

WWUS20 KWNS 161500

SEL3

SPC WW 161500

MNZ000-WIZ000-LMZ000-162300-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 693

NWS STORM PREDICTION CENTER NORMAN OK

1000 AM CDT WED JUL 16 2008



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       CENTRAL MINNESOTA

       CENTRAL WISCONSIN

       LAKE MICHIGAN



EFFECTIVE THIS WEDNESDAY MORNING AND EVENING FROM 1000 AM UNTIL

600 PM CDT.



HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70

MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 50

STATUTE MILES NORTH AND SOUTH OF A LINE FROM 40 MILES WEST OF

SAINT CLOUD MINNESOTA TO 30 MILES SOUTH SOUTHEAST OF GREEN BAY

WISCONSIN.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU3).



REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE

FAVORABLE FOR 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. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY

DO PRODUCE TORNADOES.



DISCUSSION...SEVERAL CLUSTERS OF ELEVATED THUNDERSTORMS CONTINUE TO

INCREASE AT MID MORNING OVER CENTRAL MN/W-CENTRAL WI.  INITIAL

DEVELOPMENT WILL LIKELY REMAIN ELEVATED UNTIL EARLY THIS

AFTERNOON...BUT HEATING AND ABUNDANT LOW LEVEL MOISTURE ALONG AND

SOUTH OF WNW-ESE ORIENTED SURFACE FRONT ACROSS WW SHOULD SUPPORT

VERY UNSTABLE CONDITIONS LATER TODAY.  ISOLATED LARGE HAIL AND

DAMAGING WINDS WILL ACCOMPANY STRONGER CORES...WITH SEVERE THREAT

LIKELY INCREASING THROUGH THE DAY.  COMPLEX/S OF STORMS COULD EVOLVE

INTO A BOWING MCS AND TRACK MORE SWD INTO STRONG INSTABILITY AS THE

AFTERNOON WEARS ON.



AVIATION...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 500. MEAN STORM

MOTION VECTOR 26025.





...EVANS

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