WATCHES: Tornado Watch Number 327

WWUS20 KWNS 041858
SEL7
SPC WW 041858
NCZ000-VAZ000-CWZ000-050000-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 327
NWS STORM PREDICTION CENTER NORMAN OK
255 PM EDT THU JUN 4 2009

THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF

EXTREME NORTHEASTERN NORTH CAROLINA
FAR SOUTHERN VIRGINIA
COASTAL WATERS

EFFECTIVE THIS THURSDAY AFTERNOON AND EVENING FROM 255 PM UNTIL
800 PM EDT.

TORNADOES...HAIL TO 1 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 30 STATUTE
MILES NORTH AND SOUTH OF A LINE FROM 10 MILES NORTH NORTHWEST OF
DANVILLE VIRGINIA TO 30 MILES NORTHEAST OF ELIZABETH CITY NORTH
CAROLINA. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU7).

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...DEEP LAYER SHEAR AT 30-35 KT AND MODERATE INSTABILITY
WILL BE SUFFICIENT FOR ORGANIZED SEVERE STORMS THIS AFTERNOON...
MAINLY NEAR EAST-WEST ORIENTED FRONT STRETCHING ACROSS EXTREME
SOUTHERN VA. DESPITE ONLY 10 KT OF ENVIRONMENTAL LOW LEVEL SHEAR...A
VERY MOIST BOUNDARY LAYER...DEWPOINTS IN THE LOWER 70S...AND
ENHANCED SHEAR NEAR THE FRONTAL BOUNDARY WILL SUPPORT STORMS WITH
SUPERCELL CHARACTERISTICS. THE PRIMARY THREAT WILL BE BRIEF
TORNADOES AND WIND DAMAGE.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 1 INCH. EXTREME TURBULENCE AND SURFACE WIND
GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 450.
MEAN STORM MOTION VECTOR 27020.

...IMY

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