

056 

WWUS20 KWNS 060920

SEL5

SPC WW 060920

NCZ000-SCZ000-VAZ000-CWZ000-061800-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 845

NWS STORM PREDICTION CENTER NORMAN OK

520 AM EDT TUE SEP 6 2011



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       CENTRAL AND EASTERN NORTH CAROLINA

       EASTERN SOUTH CAROLINA

       SOUTHERN VIRGINIA

       COASTAL WATERS



EFFECTIVE THIS TUESDAY MORNING AND AFTERNOON FROM 520 AM UNTIL

200 PM EDT.



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 70 STATUTE

MILES EAST AND WEST OF A LINE FROM 35 MILES WEST NORTHWEST OF

SOUTH HILL VIRGINIA TO 15 MILES SOUTH SOUTHWEST OF MYRTLE BEACH

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

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU5).



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.



DISCUSSION...SCTD SHOWERS AND WEAK TSTMS HAVE SLOWLY BEEN FORMING IN

THE PAST 90 MINUTES OR SO ALONG N/S AXIS OF ENHANCED CAPE EXTENDING

FROM NEAR MYR TO DAN.  THE INCREASE IN CONVECTION MAY BE ASSOCIATED

WITH STRENGTHENING LOW LVL CONFLUENCE DOWNSTREAM FROM LOW LVL

REMNANT OF T.D. LEE.  GIVEN STRENGTH OF LOW LVL WIND FIELD WITH

SIZABLE LOW LVL SHEAR...RICH LOW LVL MOISTURE...AND WEAK LINEAR

FORCING FOR ASCENT...SETUP MAY YIELD A FEW LOW-TOPPED SUPERCELLS

WITH A THREAT FOR TORNADOES AND/OR SMALL BOWS WITH DMGG WIND.



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 20035.





...CORFIDI

