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Marine Thunderstorm Wind · Atlantic North

Marine Thunderstorm Wind July 8, 2025 · Long Island Sound W of New Haven Ct To Port Jefferson Ny, Atlantic North

64 mph

Measured gust (56 kt)

Where the report was made, with tornadoes recorded within 15 miles over the years.

What the National Weather Service wrote

Mesonet site XGLL at Greens Ledge Lights measured a 56 knot wind gust.

The wider storm

At the surface, a cold front slowly approached from the west, with a pre-frontal trough developing ahead of it. Aloft, the area remained generally on the eastern edge of mid/upper level troughing. While shear was not all that impressive (about 25 kt of 0-6km bulk shear), strong heating aided in MLCAPE values reaching about 2000 j/kg. With lift from the aforementioned features, and likely help from the right entrance region of an upper level jet streak, showers and thunderstorms started to develop. Some storms reached severe criteria and produce damaging wind gusts.

Began near Norwalk Light Wxflow (41.0448, -73.4357).

Source: NOAA Storm Events Database, event 1277854. Narratives are written by the National Weather Service forecast office that issued the report.

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