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WWUS20 KWNS 111647

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KYZ000-MDZ000-OHZ000-VAZ000-WVZ000-112300-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 129

NWS STORM PREDICTION CENTER NORMAN OK

1250 PM EDT MON APR 11 2011



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       MUCH OF EASTERN KENTUCKY

       PARTS OF MARYLAND PANHANDLE

       PARTS OF SOUTHEAST OHIO

       PARTS OF WESTERN VIRGINIA

       MUCH OF WEST VIRGINIA



EFFECTIVE THIS MONDAY AFTERNOON AND EVENING FROM 1250 PM UNTIL

700 PM 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 80 STATUTE

MILES EAST AND WEST OF A LINE FROM 35 MILES SOUTH SOUTHWEST OF

LONDON KENTUCKY TO 5 MILES NORTH NORTHWEST OF MORGANTOWN WEST

VIRGINIA.  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 128...



DISCUSSION...STRONG HEATING HAS DESTABILIZED AIR MASS ACROSS WATCH

AREA AHEAD OF COLD FRONT.  WITH 50-60KT OF SHEAR AND MUCAPES AOA

1000 J/KG...THUNDERSTORMS WILL INCREASE IN NUMBER/INTENSITY EASTWARD

ACROSS THE WATCH AREA.  PRIMARY THREAT WILL BE DAMAGING

WINDS...HOWEVER TORNADOES WILL BE POSSIBLE ASSOCIATED WITH ANY

SUPERCELL ABLE TO FORM.



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 24035.





...HALES

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