

777 

WWUS20 KWNS 192214

SEL6

SPC WW 192214

ILZ000-INZ000-KYZ000-MIZ000-OHZ000-LMZ000-200500-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 716

NWS STORM PREDICTION CENTER NORMAN OK

615 PM EDT WED AUG 19 2009



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       EAST CENTRAL ILLINOIS

       MUCH OF INDIANA

       FAR NORTHERN KENTUCKY

       SOUTHERN LOWER MICHIGAN

       WESTERN OHIO

       LAKE MICHIGAN



EFFECTIVE THIS WEDNESDAY NIGHT AND THURSDAY MORNING FROM 615 PM

UNTIL 100 AM EDT.



TORNADOES...HAIL TO 1.5 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 40 MILES SOUTHWEST OF

DANVILLE ILLINOIS TO 60 MILES NORTH NORTHEAST OF DAYTON OHIO.

FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH

OUTLINE UPDATE (WOUS64 KWNS WOU6).



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 713...WW 714...WW 715...



DISCUSSION...ISOLD TSTMS EXPECTED TO CONTINUE FORMING INVOF DIFFUSE

W-E WARM FRONT NEAR I-70 IN CNTRL IL/IND/OH...WHILE BAND OF

STORMS/SUPERCELLS ASSOCIATED WITH CNTRL IL MCS CONTINUES ENEWD.

AMPLE DEEP SHEAR EXPECTED TO PERSIST FOR ADDITIONAL ROTATING

STORMS...WITH WIND FIELD POSSIBLY INCREASING SLIGHTLY AS REGION IS

GLANCED BY BAND OF STRONGER FLOW SWEEPING NEWD AROUND BASE OF LARGER

SCALE UPR TROUGH IN MN.  MOIST LOW LVL ENVIRONMENT AND S-SELY LOW

LVL FLOW MAY SUFFICIENTLY ENHANCE LOW LVL STORM ROTATION TO POSE A

THREAT FOR TORNADOES.



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

SURFACE AND ALOFT TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE

WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO

500. MEAN STORM MOTION VECTOR 22030.





...CORFIDI

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