

000 

WWUS20 KWNS 262213

SEL3

SPC WW 262213

MIZ000-WIZ000-LMZ000-LSZ000-270500-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 453

NWS STORM PREDICTION CENTER NORMAN OK

515 PM CDT TUE JUN 26 2007



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       LARGE PART OF UPPER MICHIGAN

       PARTS OF NORTHEAST WISCONSIN

       LAKE MICHIGAN

       LAKE SUPERIOR



EFFECTIVE THIS TUESDAY AFTERNOON FROM 515 PM UNTIL MIDNIGHT 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 80

STATUTE MILES EAST AND WEST OF A LINE FROM 35 MILES EAST

NORTHEAST OF HOUGHTON MICHIGAN TO 40 MILES SOUTHEAST OF

RHINELANDER 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.



OTHER WATCH INFORMATION...CONTINUE...WW 451...WW 452...



DISCUSSION...STRONG/SEVERE THUNDERSTORMS CONTINUE TO DEVELOP

ALONG/AHEAD OF COLD FRONT NOW NWRN WI.  AIR MASS EWD ACROSS WATCH

AREA IS MDTLY UNSTABLE  WITH 30-40KT OF DEEP LAYER SHEAR.  EXPECT

SEVERE STORMS TO CONTINUE EWD THRU THE EVENING WITH PRIMARY THREAT

LARGE HAIL AND DAMAGING DOWNBURST WINDS.



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 550. MEAN STORM

MOTION VECTOR 24025.





...HALES

