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NWS Buffalo NYSV.W 0056June 30, 2026

Severe Thunderstorm Warning: Jefferson and Lewis, NY

The National Weather Service office in Buffalo issued a severe thunderstorm warning for Jefferson and Lewis in New York, which was in force until 11:30 p.m. local time on June 30. It was the 56th severe thunderstorm warning the NWS office in Buffalo issued in 2026. New York had 95 severe thunderstorm warnings in June 2026, against 97 in an average June of 2008-2025 (New York's severe thunderstorm warnings by year).

ExpiredWarning

Issued10:42 p.m. EDT, June 30, 2026
In force10:42 p.m. EDT, June 30, 2026
Expired11:30 p.m. EDT, June 30, 2026

In force for 48 minutes; it has expired. The agency may have replaced it with a new notice.

The notice

Issued by
National Weather Service, Buffalo NY
Area
Jefferson and Lewis
State
New York
Level
Warning
Issued
10:42 p.m. EDT, June 30, 2026
Expires
11:30 p.m. EDT, June 30, 2026
CAP severity, certainty, urgency
Severe, Observed, Immediate
VTEC event
KBUF SV.W 0056
Official source
National Weather Service: the notice at its source

Severe Thunderstorm Warnings in New York since 2008Every warning type in New York

Source: National Weather Service: the notice at its source. AreaZine rebuilds this page from the agency's record; the agency's page is the one to act on. A U.S. Government work, in the public domain.

The notice as issued

SVRBUF The National Weather Service in Buffalo has issued a * Severe Thunderstorm Warning for... Northeastern Jefferson County in central New York... North central Lewis County in central New York... * Until 1130 PM EDT. * At 1040 PM EDT, severe thunderstorms were located along a line extending from 9 miles northwest of Ogdensburg to 13 miles north of Kring Point State Park to 16 miles northwest of Cedar Point State Park, moving southeast at 45 mph. HAZARD...60 mph wind gusts and penny size hail. SOURCE...Radar indicated. IMPACT...Expect damage to roofs, siding, and trees. * Locations impacted include... Fort Drum, Carthage, West Carthage, Clayton, Herrings, Redwood, Kring Point State Park, Wellesley Island State Park, Philadelphia, and Alexandria Bay. This includes Interstate 81 between exits 49 and 52.

What the agency told people to do

For your protection move to an interior room on the lowest floor of a building. Large hail, damaging wind, and frequent cloud to ground lightning are occurring with these storms. Move indoors immediately. Lightning is one of nature's leading killers. Remember, if you can hear thunder, you are close enough to be struck by lightning.

Source: National Weather Service: the notice at its source. The text is the agency's, unedited. A U.S. Government work, in the public domain.

The record around this notice