

607 

WWUS20 KWNS 180429

SEL2

SPC WW 180429

MDZ000-VAZ000-WVZ000-180900-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 572

NWS STORM PREDICTION CENTER NORMAN OK

1130 PM EST SUN NOV 17 2013



THE NWS STORM PREDICTION CENTER HAS ISSUED A



* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

  THE MARYLAND PANHANDLE

  NORTHWEST VIRGINIA

  THE EASTERN WEST VIRGINIA PANHANDLE



* EFFECTIVE THIS SUNDAY NIGHT AND MONDAY MORNING FROM 1130 PM

  UNTIL 400 AM EST.



* PRIMARY THREATS INCLUDE...

  SEVERAL DAMAGING WIND GUSTS TO 70 MPH POSSIBLE



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 50

STATUTE MILES EAST AND WEST OF A LINE FROM 20 MILES NORTH

NORTHWEST OF MARTINSBURG WEST VIRGINIA TO 10 MILES EAST SOUTHEAST

OF STAUNTON VIRGINIA.  FOR A COMPLETE DEPICTION OF THE WATCH SEE

THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU2).



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 568...WW 569...WW

570...WW 571...



DISCUSSION...A LOW-TOPPED LINE OF CONVECTION STILL APPEARS CAPABLE

OF PRODUCING ISOLATED STRONG/DAMAGING GUSTS WHILE IT PROGRESSES EWD

TOWARD NW VA OVER THE NEXT FEW HOURS...GIVEN THE STRONG LOW-LEVEL

FLOW IN AN ENVIRONMENT WITH MINIMAL INSTABILITY.



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

TO 0.5 INCH. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60

KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 300. MEAN STORM

MOTION VECTOR 27040.





...THOMPSON

