

461 

WWUS20 KWNS 062327

SEL1

SPC WW 062327

NCZ000-VAZ000-CWZ000-070400-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 41

NWS STORM PREDICTION CENTER NORMAN OK

625 PM EST SUN MAR 6 2011



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       EASTERN NORTH CAROLINA

       SOUTHEASTERN VIRGINIA

       COASTAL WATERS



EFFECTIVE THIS SUNDAY EVENING FROM 625 PM UNTIL 1100 PM EST.



TORNADOES...HAIL TO 0.5 INCH IN DIAMETER...THUNDERSTORM WIND

GUSTS TO 65 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE

AREAS.



THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 55 STATUTE

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

VIRGINIA TO 50 MILES EAST OF GOLDSBORO 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.



DISCUSSION...LOW-TOPPED CONVECTIVE BAND HAS FORMED ALONG A LOW-LVL

CONFLUENCE ZONE OVER ERN NC/SE VA THIS EVE...ON LEADING EDGE OF

MID-LVL HEIGHT FALLS/COLD ADVECTION ASSOCIATED WITH EJECTING UPR

VORT.  STRENGTH OF LOW-LVL WIND FIELD AND WEAK LINEAR FORCING IN SRN

PART OF CONVECTIVE BAND SUGGEST POTENTIAL FOR LOW-LVL MESOS/ISOLD

TORNADOES IN E CNTRL/NE NC. FARTHER N...LOW-LVL LINEAR FORCING WILL

INCREASE THIS EVE AS SFC COLD FRONT OVERTAKES CONVECTIVE BAND.  THIS

SUGGESTS A GREATER POTENTIAL FOR LEWPS WITH LOCALLY DMGG WIND IN NRN

PART OF WW.



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

SURFACE AND ALOFT TO 0.5 INCH. EXTREME TURBULENCE AND SURFACE

WIND GUSTS TO 55 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO

350. MEAN STORM MOTION VECTOR 22040.





...CORFIDI

