06/13/2013 07:31 AM EDT
WW 304 SEVERE TSTM DE MD NJ PA CW 131130Z - 131500Z
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. ...KERRRead more
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