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WWUS20 KWNS 190753

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SPC WW 190753

ILZ000-INZ000-KYZ000-MOZ000-191500-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 510

NWS STORM PREDICTION CENTER NORMAN OK

255 AM CDT SUN JUN 19 2011



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       SOUTHERN ILLINOIS

       SOUTHERN INDIANA

       WESTERN AND CENTRAL KENTUCKY

       SOUTHEAST MISSOURI



EFFECTIVE THIS SUNDAY MORNING FROM 255 AM UNTIL 1000 AM CDT.



TORNADOES...HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND

GUSTS TO 80 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE

AREAS.



THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 65 STATUTE

MILES NORTH AND SOUTH OF A LINE FROM 25 MILES SOUTH SOUTHWEST OF

FARMINGTON MISSOURI TO 60 MILES SOUTH SOUTHEAST OF LOUISVILLE

KENTUCKY.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU0).



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 508...



DISCUSSION...A FAST-MOVING MCS OVER SOUTHERN MO WILL TRACK RAPIDLY

EASTWARD INTO A VERY MOIST AND UNSTABLE AIR MASS ACROSS THE WATCH

AREA THROUGH THE MORNING HOURS.  CONDITIONS APPEAR FAVORABLE FOR AN

INTENSE BOW ECHO WITH THE THREAT OF A RESULTING WIDESPREAD DAMAGING

WIND EVENT.  ALSO...SUFFICIENT LOW LEVEL VERTICAL SHEAR AHEAD OF THE

MCS COULD PROMOTE QLCS SPIN-UPS ALONG THE LEADING EDGE OF THE BOW.



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

SURFACE AND ALOFT TO 2 INCHES. EXTREME TURBULENCE AND SURFACE

WIND GUSTS TO 70 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO

500. MEAN STORM MOTION VECTOR 27045.





...HART

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