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142 

WWUS20 KWNS 242038

SEL1

SPC WW 242038

NCZ000-VAZ000-250200-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 361

NWS STORM PREDICTION CENTER NORMAN OK

440 PM EDT TUE MAY 24 2011



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       NORTHERN NORTH CAROLINA

       SOUTH CENTRAL VIRGINIA



EFFECTIVE THIS TUESDAY AFTERNOON AND EVENING FROM 440 PM UNTIL

1000 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 45 STATUTE

MILES NORTH AND SOUTH OF A LINE FROM 50 MILES SOUTHWEST OF

BLUEFIELD WEST VIRGINIA TO 40 MILES NORTH NORTHEAST OF RALEIGH

NORTH CAROLINA.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU1).



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 354...WW 355...WW

356...WW 357...WW 358...WW 359...WW 360...



DISCUSSION...ISOLATED THUNDERSTORMS ARE TRACK EASTWARD IN VICINITY

OF AN EXISTING OUTFLOW BOUNDARY OVER NORTHERN NC.  OTHER STORMS ARE

SPREADING EASTWARD ACROSS EXTREME SOUTHWEST VA.  DEEP LAYER VERTICAL

SHEAR IS SUFFICIENTLY STRONG TO PROMOTE SUPERCELL STORM

STRUCTURES...WHILE LOW LEVEL SHEAR NEAR THE BOUNDARY WILL POSE SOME

RISK OF BRIEF TORNADOES.  LARGE HAIL AND DAMAGING WINDS WILL ALSO BE

POSSIBLE.



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 27025.





...HART

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