

459 

WWUS20 KWNS 241847

SEL5

SPC WW 241847

DCZ000-DEZ000-MDZ000-NJZ000-PAZ000-VAZ000-CWZ000-250200-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 355

NWS STORM PREDICTION CENTER NORMAN OK

245 PM EDT MON JUN 24 2013



THE NWS STORM PREDICTION CENTER HAS ISSUED A



* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

  DISTRICT OF COLUMBIA

  DELAWARE

  CENTRAL AND EASTERN MARYLAND

  NEW JERSEY

  EASTERN PENNSYLVANIA

  NORTHERN VIRGINIA

  COASTAL WATERS



* EFFECTIVE THIS MONDAY AFTERNOON AND EVENING FROM 245 PM UNTIL

  1000 PM EDT.



* PRIMARY THREATS INCLUDE...

  NUMEROUS DAMAGING WIND GUSTS TO 70 MPH LIKELY

  SEVERAL LARGE HAIL EVENTS WITH A FEW VERY LARGE HAIL EVENTS TO 2

    INCHES IN DIAMETER POSSIBLE



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 85

STATUTE MILES EAST AND WEST OF A LINE FROM 35 MILES NORTHEAST OF

TRENTON NEW JERSEY TO 35 MILES SOUTHEAST OF WASHINGTON DISTRICT

OF COLUM.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU5).



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 354...



DISCUSSION...THUNDERSTORM ACTIVITY NOW DEVELOPING ALONG AND TO THE

EAST OF THE NORTH CENTRAL APPALACHIANS APPEARS INCREASINGLY LIKELY

TO CONGEAL ...WITH CONSOLIDATING SURFACE COLD POOLS...AS IT DEVELOPS

EASTWARD INTO A VERY WARM AND MOIST ENVIRONMENT ACROSS THE COASTAL

PLAIN.  LARGE CAPE WILL MAINTAIN INTENSE UPDRAFTS WITH THE RISK FOR

SEVERE HAIL...AND THE RISK FOR POTENTIALLY DAMAGING WIND GUSTS WILL

INCREASE AS UPSCALE GROWTH PROCEEDS.



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

TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60

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

MOTION VECTOR 27025.





...KERR

