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URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 12

NWS STORM PREDICTION CENTER NORMAN OK

1005 PM EST TUE JAN 8 2008



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       SOUTHEAST INDIANA

       NORTHERN KENTUCKY

       WESTERN AND SOUTHERN OHIO



EFFECTIVE THIS TUESDAY NIGHT AND WEDNESDAY MORNING FROM 1005 PM

UNTIL 400 AM EST.



TORNADOES...HAIL TO 1 INCH IN DIAMETER...THUNDERSTORM WIND GUSTS

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



THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 70 STATUTE

MILES EAST AND WEST OF A LINE FROM 60 MILES SOUTH OF CINCINNATI

OHIO TO 50 MILES NORTH NORTHWEST OF COLUMBUS OHIO.  FOR A

COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE

UPDATE (WOUS64 KWNS WOU2).



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...THIS TORNADO WATCH REPLACES TORNADO

WATCH NUMBER 9. WATCH NUMBER 9 WILL NOT BE IN EFFECT AFTER 1005

PM EST. CONTINUE...WW 11...



DISCUSSION...POTENTIAL MAY INCREASE FOR A LOW-TOPPED CONVECTIVE

EVENT WITH HIGH WIND/MARGINAL HAIL AS UPSTREAM SHORTWAVE TROUGH

ENCOUNTERS TIGHTENING LOW-LEVEL FRONTAL ZONE NOW NEARING SDF.

INTENSITY OF LOW- TO MID-LEVEL SHEAR AND MID-LEVEL COLD

ADVECTION/INCREASING DPVA SUGGEST POSSIBILITY FOR ISOLD TORNADOES

DESPITE INCREASINGLY LINEAR LOW-LEVEL FORCING FOR ASCENT.



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

SURFACE AND ALOFT TO 1 INCH. EXTREME TURBULENCE AND SURFACE WIND

GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 300.

MEAN STORM MOTION VECTOR 23045.





...CORFIDI

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