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WWUS20 KWNS 011922

SEL4

SPC WW 011922

WIZ000-020300-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 544

NWS STORM PREDICTION CENTER NORMAN OK

220 PM CDT WED AUG 1 2012



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       CENTRAL AND EASTERN WISCONSIN



EFFECTIVE THIS WEDNESDAY AFTERNOON AND EVENING FROM 220 PM UNTIL

1000 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 40

STATUTE MILES NORTH AND SOUTH OF A LINE FROM 60 MILES WEST OF

MOSINEE WISCONSIN TO 90 MILES EAST NORTHEAST OF WAUSAU WISCONSIN.

 FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH

OUTLINE UPDATE (WOUS64 KWNS WOU4).



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...STRONG TO SEVERE STORMS WERE INITIATED AND HAVE BEEN

SUSTAINED BY A SHORTWAVE TROUGH CROSSING NORTH OF LAKE SUPERIOR AT

THIS TIME. THIS SHORTWAVE ENHANCED LOW LEVEL WARM ADVECTION ON THE

EDGE OF PLAINS CAPPING INVERSION EARLIER TODAY FOR STORMS TO

INTENSIFY WHILE CROSSING FROM ERN MN INTO NWRN WI AND WRN UPPER MI.

ACTIVITY WAS NOW MOVING INTO A WARMING AIRMASS ACROSS CNTRL/ERN WI

AND ...DESPITE MOVING EAST AND SOUTH OF THE STRONGER

FORCING...SHOULD CONTINUE TO POSE A THREAT FOR SOME HAIL...AND

PERHAPS AN INCREASING CHANCE FOR LOCALLY GUSTY/SEVERE TSTMS WINDS.

ANOTHER STRONG SHORTWAVE TROUGH IS EVIDENT ON WATER VAPOR IMAGERY

OVER WRN ND. THIS IMPULSE WILL LIKELY LEAD TO NEW TSTM DEVELOPMENT

ALONG A FRONT SITUATED ACROSS CNRTL MN WITH STORMS STRENGTHENING AND

MOVING EAST ACROSS MN AND WI LATER TODAY. AS THE POTENTIAL FOR STORM

INITIATION INCREASES ALONG THE FRONT LATER THIS

AFTERNOON...ADDITIONAL WATCHES MAY BE NEEDED.



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 29025.





...CARBIN

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