

000 

WWUS20 KWNS 311423

SEL2

SPC WW 311423

DCZ000-DEZ000-KYZ000-MDZ000-NJZ000-OHZ000-PAZ000-VAZ000-WVZ000-CWZ00

0-312100-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 402

NWS STORM PREDICTION CENTER NORMAN OK

1020 AM EDT SAT MAY 31 2008



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       DISTRICT OF COLUMBIA

       DELAWARE

       FAR NORTHEAST KENTUCKY

       MARYLAND

       NEW JERSEY

       SOUTHEAST OHIO

       SOUTHERN AND EASTERN PENNSYLVANIA

       NORTHERN VIRGINIA

       WEST VIRGINIA

       COASTAL WATERS



EFFECTIVE THIS SATURDAY MORNING AND AFTERNOON FROM 1020 AM UNTIL

500 PM EDT.



TORNADOES...HAIL TO 2 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 55 STATUTE

MILES NORTH AND SOUTH OF A LINE FROM 25 MILES SOUTHWEST OF ATHENS

OHIO TO 30 MILES SOUTHEAST OF LAKEHURST NEW JERSEY.  FOR A

COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE

UPDATE (WOUS64 KWNS WOU2).



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 399...WW 400...WW 401...



DISCUSSION...ACTIVE AFTERNOON ON TAP FOR THIS REGION AS STRONG FLOW

ALOFT OVERSPREADS A WARM/HUMID BOUNDARY LAYER SOUTH OF EFFECTIVE

OUTFLOW/CLOUDS NOW PERSISTING OVER MUCH OF PA.  SEVERE THREAT WILL

EVOLVE IN MULTIPLE MODES...INCLUDING SUPERCELLS AND SMALL BOW

ECHOES.  THEREFORE...LARGE HAIL...DAMAGING WINDS AND ISOLATED

TORNADOES WILL ALL BE POSSIBLE WITH THE STRONGER CORES TODAY.



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

SURFACE AND ALOFT TO 2 INCHES. EXTREME TURBULENCE AND SURFACE

WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO

500. MEAN STORM MOTION VECTOR 27035.





...EVANS

