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000 

WWUS20 KWNS 041853

SEL9

SPC WW 041853

DEZ000-MDZ000-NJZ000-PAZ000-CWZ000-050000-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 449

NWS STORM PREDICTION CENTER NORMAN OK

255 PM EDT WED JUN 4 2008



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       DELAWARE

       EASTERN MARYLAND

       SOUTHERN NEW JERSEY

       SOUTHEAST PENNSYLVANIA

       COASTAL WATERS



EFFECTIVE THIS WEDNESDAY AFTERNOON AND EVENING FROM 255 PM UNTIL

800 PM EDT.



TORNADOES...HAIL TO 2 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 60 STATUTE

MILES EAST AND WEST OF A LINE FROM 20 MILES NORTH NORTHEAST OF

PHILADELPHIA PENNSYLVANIA TO 15 MILES EAST OF WALLOPS VIRGINIA.

FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH

OUTLINE UPDATE (WOUS64 KWNS WOU9).



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 446...WW 447...WW 448...



DISCUSSION...FAST-MOVING BOW ECHO CURRENTLY APPROACHING THE DC METRO

AREA WILL CONTINUE EASTWARD INTO THIS REGION IN THE NEXT FEW HOURS.

A SIGNIFICANT THREAT FOR DAMAGING WINDS IS EXPECTED WITH THESE

STORMS...AS WELL AS ISOLATED TORNADOES ALONG THE LEADING EDGE.

STRONG INSTABILITY WILL ALSO POSE A THREAT FOR ISOLATED THUNDERSTORM

DEVELOPMENT AHEAD OF AND SOUTH OF SQUALL LINE.



AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL

SURFACE AND ALOFT TO 2 INCHES. EXTREME TURBULENCE AND SURFACE

WIND GUSTS TO 70 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO

500. MEAN STORM MOTION VECTOR 27045.





...HART

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