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WWUS20 KWNS 131746

SEL7

SPC WW 131746

INZ000-KYZ000-OHZ000-LEZ000-140100-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 167

NWS STORM PREDICTION CENTER NORMAN OK

150 PM EDT THU MAY 13 2010



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       MUCH OF INDIANA

       NORTHERN KENTUCKY

       MUCH OF OHIO

       LAKE ERIE



EFFECTIVE THIS THURSDAY AFTERNOON AND EVENING FROM 150 PM UNTIL

900 PM EDT.



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 125 STATUTE

MILES EAST AND WEST OF A LINE FROM 10 MILES NORTHWEST OF TOLEDO

OHIO TO 45 MILES SOUTH SOUTHWEST OF CINCINNATI OHIO.  FOR A

COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE

UPDATE (WOUS64 KWNS WOU7).



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...SCATTERED THUNDERSTORMS HAVE BEGUN TO FORM OVER WESTERN

IND...AND IN A CLUSTER OVER NORTHERN KY.  THESE STORMS WILL SPREAD

NORTHEASTWARD ACROSS THE WATCH AREA THIS AFTERNOON AND EVENING.

AMPLE LOW LEVEL MOISTURE AND INSTABILITY COMBINED WITH FAVORABLE

DEEP LAYER VERTICAL SHEAR WILL SUPPORT A RISK OF SUPERCELLS CAPABLE

OF LARGE HAIL AND DAMAGING WINDS.  ENHANCED SHEAR NEAR THE SURFACE

WARM FRONT MAY ALSO RESULT IN A FEW 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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