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WWUS20 KWNS 132352

SEL6

SPC WW 132352

DCZ000-DEZ000-MDZ000-NJZ000-PAZ000-VAZ000-CWZ000-140300-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 416

NWS STORM PREDICTION CENTER NORMAN OK

750 PM EDT SUN JUL 13 2014



THE NWS STORM PREDICTION CENTER HAS ISSUED A



* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

  DISTRICT OF COLUMBIA

  NORTHERN AND CENTRAL DELAWARE

  CENTRAL AND EASTERN MARYLAND

  WESTERN NEW JERSEY

  EASTERN PENNSYLVANIA

  NORTHERN VIRGINIA

  COASTAL WATERS



* EFFECTIVE THIS SUNDAY EVENING FROM 750 PM UNTIL 1100 PM EDT.



* PRIMARY THREATS INCLUDE...

  ISOLATED DAMAGING WIND GUSTS TO 70 MPH POSSIBLE



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 55

STATUTE MILES EAST AND WEST OF A LINE FROM 65 MILES EAST

NORTHEAST OF WILKESBARRE PENNSYLVANIA TO 10 MILES SOUTH SOUTHWEST

OF WASHINGTON DISTRICT OF COLUM.  FOR A COMPLETE DEPICTION OF THE

WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU6).



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.



&&



OTHER WATCH INFORMATION...CONTINUE...WW 413...WW 414...WW 415...



DISCUSSION...SMALL...LOOSELY-ORGANIZED...BOW-SHAPED CONVECTIVE

SYSTEM NOW OVER THE UPR SUSQUEHANNA VLY OF N CNTRL PA EXPECTED TO

CONTINUE E INTO THE UPR DELAWARE VLY AND POSSIBLY INTO WRN

NJ...SUPPORTED BY 30 DEEP WLY FLOW AT MID/UPR LVLS...AND AMPLE

WARM/MOIST AIR AT THE SFC.

FARTHER S...ADDITIONAL STORMS MAY CONTINUE TO FORM AND STRENGTHEN IN

THE NEXT 1-2 HRS OVER NRN VA AND W CNTRL MD. THESE MAY MERGE INTO A

SMALL FORWARD-PROPAGATING SYSTEM...EXTENDING A RISK FOR LOCALLY DMGG

WIND AND POSSIBLY A BRIEF TORNADO E INTO THE WILMINGTON AND

BALTIMORE/WASHINGTON METRO AREAS A BIT LATER THIS EVE.



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 27025.





...CORFIDI

