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WWUS20 KWNS 071930

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ILZ000-INZ000-MIZ000-OHZ000-LEZ000-080300-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 143

NWS STORM PREDICTION CENTER NORMAN OK

230 PM CDT FRI MAY 7 2010



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       EAST CENTRAL ILLINOIS

       CENTRAL AND NORTHERN INDIANA

       SOUTHERN LOWER MICHIGAN

       WESTERN AND CENTRAL OHIO

       LAKE ERIE



EFFECTIVE THIS FRIDAY AFTERNOON AND EVENING FROM 230 PM UNTIL

1000 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 90 STATUTE

MILES NORTH AND SOUTH OF A LINE FROM 10 MILES WEST SOUTHWEST OF

MATTOON ILLINOIS TO 50 MILES NORTH NORTHEAST OF MANSFIELD OHIO.

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.



DISCUSSION...THUNDERSTORMS ARE EXPECTED TO INTENSIFY SOON ALONG A

SURFACE COLD FRONT ACROSS EASTERN IL AND WESTERN IND.  ACTIVITY WILL

LIKELY MOVE/DEVELOP EASTWARD ACROSS WATCH AREA THROUGH THE EVENING

AS LARGE SCALE FORCING OVERSPREADS THE REGION.  SUFFICIENT MLCAPE

VALUES AND STRONG SHEAR PROFILES SUGGEST THE POTENTIAL FOR

SUPERCELLS CAPABLE OF LARGE HAIL...DAMAGING WINDS...AND 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 25040.





...HART

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