WATCHES: Tornado Watch Number 810

WWUS20 KWNS 270438
SEL0
SPC WW 270438
MDZ000-NCZ000-VAZ000-CWZ000-271500-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 810
NWS STORM PREDICTION CENTER NORMAN OK
1225 AM EDT SAT AUG 27 2011

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

THE LOWER EASTERN SHORE OF MARYLAND
FAR EASTERN NORTH CAROLINA
SOUTHEAST VIRGINIA
COASTAL WATERS

EFFECTIVE THIS SATURDAY MORNING FROM 1225 AM UNTIL 1100 AM EDT.

TORNADOES...HAIL TO 0.5 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 50 STATUTE
MILES EAST AND WEST OF A LINE FROM 25 MILES NORTH OF WALLOPS
VIRGINIA TO 40 MILES SOUTHEAST OF NEW BERN NORTH CAROLINA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE
UPDATE (WOUS64 KWNS WOU0).

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 809...

DISCUSSION...SHOWERS AND SCTD TSTMS EXPECTED TO PERSIST IN A W-E ARC
OF LOW LVL CONFLUENCE MOVING NWD ACROSS NE NC AND THE ADJACENT CSTL
WATERS ON NRN SIDE OF IMMEDIATE CIRCULATION OF HRCN IRENE. FARTHER
N...A SEPARATE BAND OF MORE INTERMITTENT ACTIVITY MAY PERSIST AND
MOVE NWD FROM OFF THE MOUTH OF CHESAPEAKE BAY.
INCREASING LOW TO MID LVL WIND FIELD WITH THE CONTINUED NWD MOVEMENT
OF IRENE...AND CONTINUED LOW LVL THETA-E ADVECTION AHEAD OF
STORM...WILL CREATE AN ENVIRONMENT INCREASINGLY FAVORABLE FOR LOW
LVL ROTATION/POSSIBLE TORNADOES NWD INTO TIDEWATER VA AND THE LWR
ERN SHORE OF MARYLAND THROUGH MID/LATE MORNING SATURDAY...WHILE
EXISTING THREAT PERSISTS OVER E CNTRL AND NE NC.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 0.5 INCH. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
500. MEAN STORM MOTION VECTOR 12045.

...CORFIDI

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