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000 

WWUS20 KWNS 061803

SEL4

SPC WW 061803

ILZ000-INZ000-WIZ000-LMZ000-062300-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 474

NWS STORM PREDICTION CENTER NORMAN OK

105 PM CDT FRI JUN 6 2008



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       NORTHEAST ILLINOIS

       NORTHWEST INDIANA

       SOUTHEAST WISCONSIN

       LAKE MICHIGAN



EFFECTIVE THIS FRIDAY AFTERNOON AND EVENING FROM 105 PM UNTIL 600

PM CDT.



TORNADOES...HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND

GUSTS TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE

AREAS.



THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 45 STATUTE

MILES EAST AND WEST OF A LINE FROM 65 MILES NORTH OF MILWAUKEE

WISCONSIN TO 75 MILES SOUTH SOUTHEAST OF MARSEILLES ILLINOIS.

FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH

OUTLINE UPDATE (WOUS64 KWNS WOU4).



REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR

TORNADOES AND 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.



OTHER WATCH INFORMATION...CONTINUE...WW 472...WW 473...



DISCUSSION...ISOLATED AND DISCRETE THUNDERSTORMS ARE DEVELOPING OVER

SOUTHEAST WI AND NORTHEAST IL...IN REGION OF MODERATE INSTABILITY

AND STRONG LOW/DEEP LAYER VERTICAL SHEAR.  SUPERCELLS ARE EXPECTED

THAT WILL TRACK NORTHEASTWARD INTO LAKE MI DURING THE AFTERNOON.

THREAT OF HAIL AND DAMAGING WINDS WILL INCREASE WITH STORMS AS THEY

MOVE EASTWARD...AS WELL AS A RISK OF ISOLATED TORNADOES.



AVIATION...TORNADOES AND 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 24035.





...HART

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