SEL8
SPC WW 111939
NJZ000-NYZ000-PAZ000-CWZ000-120200-
URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 698
NWS STORM PREDICTION CENTER NORMAN OK
340 PM EDT MON OCT 11 2010
THE NWS STORM PREDICTION CENTER HAS ISSUED A
SEVERE THUNDERSTORM WATCH FOR PORTIONS OF
MUCH OF NEW JERSEY
PARTS OF SOUTHEAST NEW YORK
MUCH OF EASTERN PENNSYLVANIA
COASTAL WATERS
EFFECTIVE THIS MONDAY AFTERNOON AND EVENING FROM 340 PM UNTIL
1000 PM EDT.
HAIL TO 1.5 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70
MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.
THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 60
STATUTE MILES NORTH AND SOUTH OF A LINE FROM 15 MILES WEST
SOUTHWEST OF WILLIAMSPORT PENNSYLVANIA TO 25 MILES SOUTH
SOUTHEAST OF NEW YORK CITY NEW YORK. FOR A COMPLETE DEPICTION OF
THE WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS
WOU8).
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.
DISCUSSION...THUNDERSTORMS HAVE DEVELOP CENTRAL PA WITHIN A MDTLY
SHEARED...STEEP LAPSE RATE ENVIRONMENT. SUFFICIENT INSTABILITY FOR
STORMS TO DEVELOP INTO SHORT LINE SEGMENTS/BOWS WITH RESULTANT COLD
POOLS AND DAMAGING WINDS. ACTIVITY WILL CONTINUE RAPIDLY ESEWD THRU
THE WATCH WHERE FAVORABLE CONDITIONS ARE AVAILABLE TO THE COAST.
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 450. MEAN STORM
MOTION VECTOR 27035.
...HALES
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