WATCHES: Severe Thunderstorm Watch Number 327

WWUS20 KWNS 201711
SEL7
SPC WW 201711
NCZ000-VAZ000-CWZ000-210000-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 327
NWS STORM PREDICTION CENTER NORMAN OK
110 PM EDT TUE MAY 20 2008

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

A LARGE PART OF CENTRAL AND NORTHEASTERN NORTH CAROLINA
PARTS OF SOUTHERN AND SOUTHEASTERN VIRGINIA
COASTAL WATERS

EFFECTIVE THIS TUESDAY AFTERNOON AND EVENING FROM 110 PM UNTIL
800 PM EDT.

HAIL TO 2.5 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 80
MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 70
STATUTE MILES NORTH AND SOUTH OF A LINE FROM 35 MILES EAST
NORTHEAST OF NORFOLK VIRGINIA TO 15 MILES SOUTH SOUTHWEST OF
HICKORY NORTH CAROLINA. FOR A COMPLETE DEPICTION OF THE WATCH
SEE THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU7).

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.

DISCUSSION...STRONG WESTERLY WIND FIELDS ACROSS MID ATLANTIC STATES
WITH STEEP MID LEVEL LAPSE RATES IN PLACE. AIRMASS IS BECOMING
MDTLY UNSTABLE AS HEATING WEAKENS CONVECTIVE INHIBITION E OF SRN
APPALACHIANS. SEVERE THUNDERSTORMS WILL DEVELOP EWD FROM
APPALACHIANS AND FORM IN TO SHORT LINES/BOWS WITH PRIMARILY THREAT
OF WIND DAMAGE AND LARGE HAIL. SUPERCELLS WILL BE POSSIBLE AS
STORMS MOVE INTO MORE UNSTABLE AIR SERN VA/NERN NC DURING AFTERNOON.

AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
TO 2.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 70
KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM
MOTION VECTOR 26045.

...HALES

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