

355 

WWUS20 KWNS 200213

SEL9

SPC WW 200213

INZ000-KYZ000-OHZ000-200900-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 159

NWS STORM PREDICTION CENTER NORMAN OK

1015 PM EDT TUE APR 19 2011



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       EXTREME SOUTHEAST INDIANA

       CENTRAL KENTUCKY

       SOUTHWEST OHIO



EFFECTIVE THIS TUESDAY NIGHT AND WEDNESDAY MORNING FROM 1015 PM

UNTIL 500 AM EDT.



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 75 STATUTE

MILES EAST AND WEST OF A LINE FROM 25 MILES NORTH NORTHWEST OF

COLUMBUS OHIO TO 30 MILES EAST OF FORT CAMPBELL KENTUCKY.  FOR A

COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE

UPDATE (WOUS64 KWNS WOU9).



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 155...WW 156...WW

157...WW 158...



DISCUSSION...FAST-MOVING BOW ECHOES IN INDIANA NEAR THE SURFACE

LOW/WARM FRONT...AND ANOTHER APPROACHING SW INDIANA/WRN KY...WILL

LIKELY PERSIST FOR SEVERAL MORE HOURS WILL MOVING EWD THROUGH A

MODERATELY UNSTABLE WARM SECTOR.  STRONG LOW-LEVEL FLOW/SHEAR WILL

MAINTAIN A RISK FOR DAMAGING WINDS...AS WELL AS A FEW QLCS

MESOVORTEX-TYPE TORNADOES.



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 500.

MEAN STORM MOTION VECTOR 27050.





...THOMPSON

