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WWUS20 KWNS 231915

SEL4

SPC WW 231915

NCZ000-VAZ000-240300-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 344

NWS STORM PREDICTION CENTER NORMAN OK

315 PM EDT MON MAY 23 2011



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       NORTHERN NORTH CAROLINA

       SOUTHERN VIRGINIA



EFFECTIVE THIS MONDAY AFTERNOON AND EVENING FROM 315 PM UNTIL

1100 PM EDT.



HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70

MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 105

STATUTE MILES EAST AND WEST OF A LINE FROM 50 MILES NORTHWEST OF

RICHMOND VIRGINIA TO 50 MILES SOUTH SOUTHWEST OF GREENSBORO NORTH

CAROLINA.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU4).



REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE

FAVORABLE FOR 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. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY

DO PRODUCE TORNADOES.



OTHER WATCH INFORMATION...CONTINUE...WW 338...WW 339...WW

340...WW 341...WW 342...WW 343...



DISCUSSION...SCATTERED THUNDERSTORMS ARE BEGINNING TO FORM ALONG THE

MOUNTAINS OF WESTERN VA/NC.  THESE STORMS WILL SPREAD EASTWARD THIS

AFTERNOON INTO A MOIST AND VERY UNSTABLE AIR MASS...WITH THE

POTENTIAL FOR DAMAGING WINDS AND LARGE HAIL.  OTHER STORMS ARE

EXPECTED TO FORM IN A FEW HOURS ALONG THE INSTABILITY AXIS OVER

SOUTHEAST VA AND NORTHEAST NC...WHERE A RISK OF DAMAGING WINDS AND

HAIL WILL ALSO BE PRESENT.



AVIATION...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 550. MEAN STORM

MOTION VECTOR 27030.





...HART

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