[BNAWX] Severe Local Storm Watch and Watch Cancellation

[EMWIN Server]

WWUS20 KWNS 280441
SEL7
SPC WW 280441
DCZ000-MDZ000-NCZ000-TNZ000-VAZ000-WVZ000-CWZ000-281200-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 247
NWS STORM PREDICTION CENTER NORMAN OK
1240 AM EDT THU APR 28 2011

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

       DISTRICT OF COLUMBIA
       MARYLAND
       NORTHERN NORTH CAROLINA
       FAR NORTHEAST TENNESSEE
       VIRGINIA
       EASTERN WEST VIRGINIA
       COASTAL WATERS

EFFECTIVE THIS THURSDAY MORNING FROM 1240 AM UNTIL 800 AM EDT.

TORNADOES...HAIL TO 1.5 INCHES IN DIAMETER...THUNDERSTORM WIND
GUSTS TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE
AREAS.

THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 80 STATUTE
MILES EAST AND WEST OF A LINE FROM 30 MILES NORTHEAST OF
MARTINSBURG WEST VIRGINIA TO 50 MILES WEST OF GREENSBORO 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.

OTHER WATCH INFORMATION...CONTINUE...WW 238...WW 239...WW
240...WW 241...WW 242...WW 244...WW 245...WW 246...

DISCUSSION...TSTMS CURRENTLY CRESTING THE BLUE RIDGE ARE EXPECTED TO
INTENSIFY DURING THE EARLY MORNING HOURS AS THEY ENCOUNTER A MOIST
AND MODERATELY UNSTABLE AIR MASS IN PLACE ACROSS THE PIEDMONT.
GIVEN THE STRONG VERTICAL SHEAR IN PLACE...THE SETUP WILL FAVOR A
CONTINUATION OF SUPERCELLS AND BOWING STRUCTURES CAPABLE OF
TORNADOES...DAMAGING WINDS AND HAIL.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
400. MEAN STORM MOTION VECTOR 23045.


...MEAD

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