

792 

WWUS20 KWNS 132043

SEL9

SPC WW 132043

GAZ000-NCZ000-SCZ000-VAZ000-140300-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 299

NWS STORM PREDICTION CENTER NORMAN OK

445 PM EDT FRI MAY 13 2011



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       PARTS OF NORTHEASTERN GEORGIA

       LARGE PART OF CENTRAL NORTH CAROLINA

       PARTS OF NORTHERN SOUTH CAROLINA

       PARTS OF SOUTHERN VIRGINIA



EFFECTIVE THIS FRIDAY AFTERNOON AND EVENING FROM 445 PM UNTIL

1100 PM EDT.



HAIL TO 1.5 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 85

STATUTE MILES EAST AND WEST OF A LINE FROM 55 MILES NORTHWEST OF

SOUTH HILL VIRGINIA TO 45 MILES EAST SOUTHEAST OF ANDERSON SOUTH

CAROLINA.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU9).



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 297...WW 298...



DISCUSSION...THUNDERSTORMS EXPECTED TO DEVELOP EWD FROM APPALACHIANS

INTO LOWER ELEVATIONS WHERE A MDTLY UNSTABLE AIR MASS RESIDES. WHILE

SHEAR IS AROUND 30KT...COLD POOL DEVELOPMENT EXPECTED TO LEAD TO

CLUSTERS/SHORT LINES SEGMENTS MOVING EWD ENHANCING POTENTIAL FOR

WIND DAMAGE INTO THE EVENING.



AVIATION...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 27025.





...HALES

