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536 

WWUS20 KWNS 060405

SEL3

SPC WW 060405

IAZ000-ILZ000-INZ000-MIZ000-OHZ000-WIZ000-LEZ000-LMZ000-061100-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 53

NWS STORM PREDICTION CENTER NORMAN OK

1105 PM CDT MON APR 5 2010



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       PARTS OF NORTHEAST IOWA

       PARTS OF NORTHERN ILLINOIS

       PARTS OF NORTHERN INDIANA

       SOUTHERN MICHIGAN

       PARTS OF NORTHWEST OHIO

       SMALL PART OF SOUTHERN WISCONSIN

       LAKE ERIE

       LAKE MICHIGAN



EFFECTIVE THIS MONDAY NIGHT AND TUESDAY MORNING FROM 1105 PM

UNTIL 600 AM 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 75 MILES WEST OF

ROCKFORD ILLINOIS TO 25 MILES EAST SOUTHEAST OF DETROIT MICHIGAN.

 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 52...



DISCUSSION...SERIES OF STRONG/SEVERE THUNDERSTORMS CONTINUE TO

DEVELOP IN THE VIGOROUS WARM ADVECTION ZONE ACROSS THE WATCH DRIVEN

BY THE 50KT KT LOW LEVEL JET.  IN ADDITION TO WIND DAMAGE LARGE HAIL

WILL BE LIKELY WITH THE CLUSTERS OF STORMS...SOME WHICH MAY BE

ELEVATED SUPERCELLS.



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 27040.





...HALES

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