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000 

WWUS20 KWNS 080317

SEL3

SPC WW 080317

ILZ000-INZ000-MIZ000-WIZ000-LMZ000-081000-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 363

NWS STORM PREDICTION CENTER NORMAN OK

1015 PM CDT THU JUN 7 2007



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       NORTHERN AND CENTRAL ILLINOIS

       NORTHWEST INDIANA

       WESTERN LOWER MICHIGAN

       SOUTHERN AND EASTERN WISCONSIN

       LAKE MICHIGAN



EFFECTIVE THIS THURSDAY NIGHT AND FRIDAY MORNING FROM 1015 PM

UNTIL 500 AM CDT.



TORNADOES...HAIL TO 1.5 INCHES IN DIAMETER...THUNDERSTORM WIND

GUSTS TO 80 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE

AREAS.



THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 90 STATUTE

MILES EAST AND WEST OF A LINE FROM 55 MILES SOUTH SOUTHWEST OF

PEORIA ILLINOIS TO 40 MILES NORTHWEST OF ROBEN HOOD MICHIGAN.

FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH

OUTLINE UPDATE (WOUS64 KWNS WOU3).



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 360...WW 361...WW 362...



DISCUSSION...SCTD TSTMS/POSSIBLE SUPERCELLS EXPECTED TO

PERSIST/DEVELOP ALONG DRY LINE AND...EVENTUALLY...COLD FRONT MOVING

E ACROSS THE MID MS VLY/WRN GRT LKS AS LARGE SCALE UPR TROUGH

AMPLIFIES SEWD FROM THE NRN PLNS.  STRONG/DEEP WSW FLOW...INCREASING

LOW LEVEL MOISTURE INFLOW AND WEAK CONVERGENCE SUGGEST POTENTIAL FOR

NARROW CORRIDORS OF DAMAGING WINDS/HAIL AND ISOLATED TORNADOES WELL

INTO THE OVERNIGHT.



AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL

SURFACE AND ALOFT TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE

WIND GUSTS TO 70 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO

500. MEAN STORM MOTION VECTOR 25050.





...CORFIDI

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