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WWUS20 KWNS 281048

SEL0

SPC WW 281048

KYZ000-OHZ000-PAZ000-VAZ000-WVZ000-281800-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 30

NWS STORM PREDICTION CENTER NORMAN OK

550 AM EST MON FEB 28 2011



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       EASTERN KENTUCKY

       SOUTHEAST OHIO

       SOUTHWEST PENNSYLVANIA

       FAR WESTERN VIRGINIA

       WEST VIRGINIA



EFFECTIVE THIS MONDAY MORNING AND AFTERNOON FROM 550 AM UNTIL 100

PM EST.



TORNADOES...HAIL TO 0.5 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 80 STATUTE

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

LONDON KENTUCKY TO 20 MILES NORTH NORTHEAST OF PITTSBURGH

PENNSYLVANIA.  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 27...WW 28...WW 29...



DISCUSSION...QLCS WITH EMBEDDED MESO-VORTICES WILL CONTINUE EWD

ACROSS WW AREA THIS MORNING AT 40-50 KT.  AMBIENT INFLOW AIR MASS

REMAINS WARM AND MOIST AND WHEN COUPLED WITH THE VERY STRONG

VERTICAL SHEAR...SETUP WILL BE FAVORABLE FOR A CONTINUED RISK FOR

DAMAGING WINDS AND TORNADOES.



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

SURFACE AND ALOFT TO 0.5 INCH. EXTREME TURBULENCE AND SURFACE

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

400. MEAN STORM MOTION VECTOR 27050.





...MEAD

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