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588 

WWUS20 KWNS 142240

SEL6

SPC WW 142240

DCZ000-MDZ000-NCZ000-VAZ000-WVZ000-CWZ000-150500-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 426

NWS STORM PREDICTION CENTER NORMAN OK

640 PM EDT TUE JUL 14 2015



THE NWS STORM PREDICTION CENTER HAS ISSUED A



* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

  DISTRICT OF COLUMBIA

  WESTERN AND CENTRAL MARYLAND

  NORTHWESTERN NORTH CAROLINA

  WESTERN AND NORTHERN VIRGINIA

  EASTERN WEST VIRGINIA

  COASTAL WATERS



* EFFECTIVE THIS TUESDAY NIGHT AND WEDNESDAY MORNING FROM 640 PM

  UNTIL 100 AM EDT.



* PRIMARY THREATS INCLUDE...

  SCATTERED DAMAGING WIND GUSTS TO 70 MPH POSSIBLE



SUMMARY...ORGANIZED THUNDERSTORM COMPLEX OVER WEST VIRGINIA AND

EASTERN KENTUCKY SHOULD CONTINUE TO MOVE SOUTHEASTWARD TO

EAST-SOUTHEASTWARD INTO THE WATCH AREA...EITHER MAINTAINING

INTENSITY OR (IF IT TEMPORARILY WEAKENS) STRENGTHENING AGAIN ONCE

ENCOUNTERING FAVORABLE AIR MASS ON THE EAST SIDE OF THE MOUNTAINS.

AS SUCH...DAMAGING GUSTS ARE EXPECTED AND ISOLATED...MARGINALLY

SEVERE HAIL ARE POSSIBLE.  SEE SPC MESOSCALE DISCUSSION 1419 FOR

METEOROLOGICAL DETAILS.



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 70

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

DUBLIN VIRGINIA TO 50 MILES NORTHWEST 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 421...WW 422...WW

423...WW 424...WW 425...



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 550. MEAN STORM MOTION

VECTOR 28030.





...EDWARDS

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