WATCHES: Tornado Watch Number 273

WWUS20 KWNS 061647
SEL3
SPC WW 061647
DCZ000-DEZ000-MDZ000-NJZ000-VAZ000-WVZ000-CWZ000-070000-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 273
NWS STORM PREDICTION CENTER NORMAN OK
1240 PM EDT SUN JUN 6 2010

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

DISTRICT OF COLUMBIA
DELAWARE
MUCH OF MARYLAND
NEW JERSEY
NORTHERN AND CENTRAL VIRGINIA
EASTERN PANHANDLE OF WEST VIRGINIA
COASTAL WATERS

EFFECTIVE THIS SUNDAY AFTERNOON AND EVENING FROM 1240 PM UNTIL
800 PM EDT.

TORNADOES...HAIL TO 1.5 INCHES IN DIAMETER...THUNDERSTORM WIND
GUSTS TO 80 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE
AREAS.

THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 105 STATUTE
MILES EITHER SIDE OF A LINE FROM 30 MILES NORTH NORTHWEST OF
BALTIMORE MARYLAND TO 65 MILES SOUTHWEST OF PATUXENT RIVER
MARYLAND. 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 271...WW 272...

DISCUSSION...STORMS OVER THE HIGHER TERRAIN ARE EXPECTED TO SHIFT
EWD THROUGH THE AFTERNOON AND INTENSIFY AS THEY ENCOUNTER A VERY
WARM AND UNSTABLE ENVIRONMENT. DEEP WLY FLOW FROM 2-10 KM AGL WILL
BE FAVORABLE FOR ONE OR TWO LINES OF THUNDERSTORMS WITH WIND DAMAGE
TO DEVELOP. ALSO...THE PRESENCE OF STRONG DEEP LAYER SHEAR AND
STRONGLY VEERED WINDS IN THE LOWEST 1 TO 2 KM WILL SUPPORT EMBEDDED
SUPERCELLS WITHIN AND AHEAD OF THE LINE...WITH TORNADOES POSSIBLE.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 70 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
500. MEAN STORM MOTION VECTOR 27030.

...IMY

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