948
WWUS20 KWNS 301712
SEL3
SPC WW 301712
MAZ000-NYZ000-VTZ000-LOZ000-010000-
URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 423
NWS STORM PREDICTION CENTER NORMAN OK
115 PM EDT TUE JUN 30 2026
THE NWS STORM PREDICTION CENTER HAS ISSUED A
* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF
FAR WESTERN MASSACHUSETTS
CENTRAL AND EASTERN NEW YORK
FAR SOUTHERN VERMONT
LAKE ONTARIO
* EFFECTIVE THIS TUESDAY AFTERNOON AND EVENING FROM 115 PM UNTIL
800 PM EDT.
* PRIMARY THREATS INCLUDE...
SCATTERED DAMAGING WIND GUSTS TO 70 MPH LIKELY
ISOLATED LARGE HAIL EVENTS TO 1.5 INCHES IN DIAMETER POSSIBLE
A TORNADO OR TWO POSSIBLE
SUMMARY...A WELL-ORGANIZED AND FAST-MOVING CLUSTER OF STORMS WILL
CONTINUE SOUTHEASTWARD THIS AFTERNOON WITH A PRIMARY CONCERN FOR
DAMAGING WINDS AS STORMS PROGRESS SOUTHEASTWARD. ADDITIONAL
PERIPHERAL DEVELOPMENT IS ALSO POSSIBLE THIS AFTERNOON ACROSS OTHER
PARTS OF THE NEARBY REGION WITHIN AN UNSTABLE AIR MASS.
THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 70
STATUTE MILES EAST AND WEST OF A LINE FROM 25 MILES NORTH NORTHWEST
OF WATERTOWN NY TO 55 MILES EAST OF BINGHAMTON NY. FOR A COMPLETE
DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE
(WOUS64 KWNS WOU3).
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.
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 600. MEAN STORM MOTION VECTOR
31040.
...GUYER
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