Severe Thunderstorm Watch #461 In Effect Until 11 PM EDT

Ashe and Watauga counties in North Carolina are included in this watch.


URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 461
NWS STORM PREDICTION CENTER NORMAN OK
210 PM EDT THU JUN 28 2007

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

DISTRICT OF COLUMBIA
DELAWARE
MARYLAND
NORTHERN NORTH CAROLINA
NEW JERSEY
SOUTHEAST PENNSYLVANIA
VIRGINIA
EASTERN WEST VIRGINIA
COASTAL WATERS

EFFECTIVE THIS THURSDAY AFTERNOON AND EVENING FROM 210 PM UNTIL
1100 PM EDT.

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

THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 100
STATUTE MILES NORTH AND SOUTH OF A LINE FROM 30 MILES SOUTHEAST
OF TRENTON NEW JERSEY TO 45 MILES SOUTH SOUTHWEST OF BLUEFIELD
WEST VIRGINIA. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU1).

REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE
FAVORABLE FOR 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. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY
DO PRODUCE TORNADOES.

DISCUSSION...VERY WARM AND HUMID CONDITIONS HAVE DEVELOPED FROM
SOUTHWEST VA/NORTHWEST NC ACROSS THE DELMARVA REGION INTO NJ/PA.
SCATTERED THUNDERSTORMS ARE FORECAST TO DEVELOP THROUGHOUT THIS
REGION THIS AFTERNOON AND EVENING WHERE MLCAPE VALUES WILL BE IN
EXCESS OF 2000 J/KG. STEEP LOW LEVEL LAPSE RATES AND SUFFICIENT
VERTICAL SHEAR WILL ENHANCE THE RISK OF DAMAGING WINDS AND HAIL IN
STRONGER CELLS.

6/28/07-3:12 PM