

101 

WWUS20 KWNS 021509

SEL1

SPC WW 021509

ILZ000-INZ000-MIZ000-WIZ000-LMZ000-022100-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 651

NWS STORM PREDICTION CENTER NORMAN OK

1010 AM CDT WED JUL 2 2008



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       PARTS OF NORTHERN ILLINOIS

       SMALL PART OF NORTHERN INDIANA

       MUCH OF WESTERN PORTION OF LOWER MICHIGAN

       PARTS OF SOUTHERN AND EASTERN WISCONSIN

       LAKE MICHIGAN



EFFECTIVE THIS WEDNESDAY MORNING AND AFTERNOON FROM 1010 AM UNTIL

400 PM CDT.



HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 80

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



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 95

STATUTE MILES NORTH AND SOUTH OF A LINE FROM 45 MILES SOUTHWEST

OF MADISON WISCONSIN TO 45 MILES EAST OF GRAND RAPIDS MICHIGAN.

FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH

OUTLINE UPDATE (WOUS64 KWNS WOU1).



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...THUNDERSTORMS ARE INCREASING ACROSS SRN WI AHEAD OF

COLD FRONT AND UPPER TROUGH. WITH A RAPIDLY INCREASE IN MOISTURE AND

INSTABILITY EWD  ACROSS THE WATCH...STORMS ARE DEVELOPING A

PRONOUNCED COLD POOL WITH ACCORDINGLY INCREASE IN WIND DAMAGE

THREAT.  WITH HEATING STORMS WILL CONTINUE INTENSIFYING AS THEY

MOVE/DEVELOP E AND SE THIS AFTERNOON.



AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT

TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 70

KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM

MOTION VECTOR 26040.





...HALES

