

446 

WWUS20 KWNS 071715

SEL4

SPC WW 071715

DCZ000-MDZ000-PAZ000-VAZ000-WVZ000-CWZ000-080000-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 394

NWS STORM PREDICTION CENTER NORMAN OK

115 PM EDT SUN JUL 7 2013



THE NWS STORM PREDICTION CENTER HAS ISSUED A



* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

  DISTRICT OF COLUMBIA

  WESTERN AND CENTRAL MARYLAND

  CENTRAL PENNSYLVANIA

  NORTHERN VIRGINIA

  EASTERN WEST VIRGINIA PANHANDLE

  COASTAL WATERS



* EFFECTIVE THIS SUNDAY AFTERNOON AND EVENING FROM 115 PM UNTIL

  800 PM EDT.



* PRIMARY THREATS INCLUDE...

  SEVERAL DAMAGING WIND GUSTS TO 70 MPH POSSIBLE



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 75

STATUTE MILES NORTH AND SOUTH OF A LINE FROM 70 MILES WEST OF

MARTINSBURG WEST VIRGINIA TO 45 MILES NORTHEAST OF HARRISBURG

PENNSYLVANIA.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU4).



PRECAUTIONARY/PREPAREDNESS ACTIONS...



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...A LINE OF THUNDERSTORMS IS INTENSIFYING OVER NORTHEAST

WV. THESE STORMS ARE EXPECTED TO TRACK NORTHEASTWARD ACROSS THE

WATCH AREA THIS AFTERNOON AND EARLY EVENING.  WIND FIELDS ALOFT AND

MODERATE INSTABILITY WILL PROMOTE A RISK OF LOCALLY DAMAGING WINDS

IN THE STRONGEST STORMS.



AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT

TO 1 INCH. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60 KNOTS.

A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM MOTION

VECTOR 24035.





...HART

