

000 

WWUS20 KWNS 162206

SEL8

SPC WW 162206

MAZ000-NHZ000-NYZ000-VTZ000-170300-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 608

NWS STORM PREDICTION CENTER NORMAN OK

605 PM EDT THU AUG 16 2007



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       WESTERN MASSACHUSETTS

       SOUTHERN AND CENTRAL NEW HAMPSHIRE

       SOUTHERN AND EASTERN NEW YORK

       SOUTHERN VERMONT



EFFECTIVE THIS THURSDAY EVENING FROM 605 PM UNTIL 1100 PM EDT.



HAIL TO 2 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 110

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

SOUTHEAST OF BINGHAMTON NEW YORK TO 20 MILES NORTH OF LEBANON NEW

HAMPSHIRE.  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.



OTHER WATCH INFORMATION...CONTINUE...WW 603...WW 605...WW

606...WW 607...



DISCUSSION...ISOLATED SUPERCELLS EXPECTED TO PERSIST ACROSS THE

MOHAWK VLY OF NY THIS EVENING...IN WEAKLY CONFLUENT REGION ALONG SRN

FRINGE OF LWR ST LAWRENCE VLY SPEED MAX.  THIS ACTIVITY MAY SPREAD E

INTO THE CATSKILLS AND THE UPR HUDSON VLY BEFORE WEAKENING LATER

THIS EVENING.  OTHER MORE LINEARLY-ORGANIZED STORMS MAY PERSIST AND

MOVE E FROM CNTRL VT...IN ENVIRONMENT OF STRONGER /40-50 KT/ DEEP

WLY SHEAR.



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 27035.





...CORFIDI

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