

205 

WWUS20 KWNS 131130

SEL4

SPC WW 131130

DEZ000-MDZ000-NJZ000-PAZ000-CWZ000-131500-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 304

NWS STORM PREDICTION CENTER NORMAN OK

730 AM EDT THU JUN 13 2013



THE NWS STORM PREDICTION CENTER HAS ISSUED A



* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

  DELAWARE

  EASTERN MARYLAND

  CENTRAL AND SOUTHERN NEW JERSEY

  SOUTHEASTERN PENNSYLVANIA

  COASTAL WATERS



* EFFECTIVE THIS THURSDAY MORNING FROM 730 AM UNTIL 1100 AM EDT.



* PRIMARY THREATS INCLUDE...

  SEVERAL DAMAGING WIND GUSTS TO 70 MPH POSSIBLE

  SEVERAL LARGE HAIL EVENTS TO 1.5 INCHES IN DIAMETER POSSIBLE



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 45

STATUTE MILES EAST AND WEST OF A LINE FROM 15 MILES NORTH OF

TRENTON NEW JERSEY TO 55 MILES SOUTH SOUTHEAST OF DOVER DELAWARE.

 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.



&&



OTHER WATCH INFORMATION...CONTINUE...WW 303...



DISCUSSION...THE MESOSCALE CONVECTIVE SYSTEM APPROACHING THE REGION

HAS BEEN SLOWLY WEAKENING.  HOWEVER...IT REMAINS STRONG

ENOUGH...COUPLED WITH 40+ KT EASTWARD SOUTHEASTWARD PROPAGATION

ALONG A DIFFUSE SURFACE WARM FRONT...TO SUPPORT A CONTINUING RISK

FOR POTENTIALLY DAMAGING WIND GUSTS INTO NEW JERSEY/DELMARVA

PENINSULA ATLANTIC COASTAL AREAS BY AROUND 15Z.



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

TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60

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

MOTION VECTOR 28040.





...KERR

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