SPC Tornado Watch 686
Tue, 28 Sep 2010 10:04:02 -0500
URGENT - IMMEDIATE BROADCAST REQUESTED TORNADO WATCH NUMBER 686 NWS STORM PREDICTION CENTER NORMAN OK 1100 AM EDT TUE SEP 28 2010 THE NWS STORM PREDICTION CENTER HAS ISSUED A TORNADO WATCH FOR PORTIONS OF WESTERN CONNECTICUT WESTERN MASSACHUSETTS NEW JERSEY SOUTHEAST NEW YORK EASTERN PENNSYLVANIA COASTAL WATERS EFFECTIVE THIS TUESDAY MORNING AND EVENING FROM 1100 AM UNTIL 600 PM EDT. TORNADOES...HAIL TO 0.5 INCH IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS. THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 65 STATUTE MILES EAST AND WEST OF A LINE FROM 65 MILES WEST NORTHWEST OF PITTSFIELD MASSACHUSETTS TO 20 MILES SOUTH SOUTHWEST OF ATLANTIC CITY NEW JERSEY. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU6). REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR TORNADOES AND 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. DISCUSSION...SCATTERED SHOWERS AND THUNDERSTORMS ARE SLOWLY INCREASING ALONG A BAND FROM CENTRAL NY INTO EASTERN PA. THIS ACTIVITY WILL SPREAD EASTWARD THROUGH THE DAY ACROSS THE WATCH AREA. INSTABILITY IS QUITE WEAK...AND CONVECTION HAS THUS FAR BEEN TOO SHALLOW TO PRODUCE LIGHTNING. HOWEVER...LOW LEVEL AND DEEP LAYER VERTICAL SHEAR IS VERY STRONG AND THE RISK EXISTS FOR ISOLATED SUPERCELLS OR SMALL BOW ECHOES. RECENT RADAR TRENDS HAVE CONFIRMED THAT RISK. DAMAGING WINDS ARE THE GREATEST THREAT...BUT AN ISOLATED TORNADO IS ALSO A POSSIBILITY. AVIATION...TORNADOES AND 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 400. MEAN STORM MOTION VECTOR 21035. ...HARTRead more
SPC Tornado Watch 686 Status Reports
Tue, 28 Sep 2010 10:04:11 -0500
STATUS FOR WATCH 0686 HAS NOT BEEN ISSUED YETRead more
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