

607 

WWUS20 KWNS 030202

SEL3

SPC WW 030202

MDZ000-NCZ000-VAZ000-CWZ000-030900-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 793

NWS STORM PREDICTION CENTER NORMAN OK

900 PM EST WED DEC 2 2009



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       PART OF THE LOWER EASTERN SHORE OF MARYLAND

       NORTHERN NORTH CAROLINA

       SOUTHERN AND EASTERN VIRGINIA

       COASTAL WATERS



EFFECTIVE THIS WEDNESDAY NIGHT AND THURSDAY MORNING FROM 900 PM

UNTIL 400 AM EST.



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

GUSTS TO 60 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE

AREAS.



THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 50 STATUTE

MILES EITHER SIDE OF A LINE FROM 30 MILES WEST OF RALEIGH NORTH

CAROLINA TO 25 MILES SOUTHEAST OF WALLOPS VIRGINIA.  FOR A

COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE

UPDATE (WOUS64 KWNS WOU3).



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 789...WW 790...WW

791...WW 792...



DISCUSSION...ASCENT ASSOCIATED WITH NEWD MOVEMENT OF POTENT TN VLY

SHORT WAVE TROUGH...AND CONTINUED LOW LVL MOISTURE INFLOW ACROSS ERN

NC/SE VA...WILL CREATE SETUP SUPPORTIVE OF EMBEDDED SUPERCELLS AS

EXISTING CONVECTION SPREADS RAPIDLY NE INTO WW.  STRONGLY-SHEARED

/INCREASINGLY MOIST ENVIRONMENT MAY FOSTER LOW LVL ROTATION/BRIEF

TORNADOES...ESPECIALLY IN SE VA LATER TONIGHT/EARLY THU.



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

SURFACE AND ALOFT TO 0.5 INCH. EXTREME TURBULENCE AND SURFACE

WIND GUSTS TO 50 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO

350. MEAN STORM MOTION VECTOR 22055.





...CORFIDI

