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Marine Thunderstorm Wind · Atlantic North

Marine Thunderstorm Wind June 30, 2021 · Cape Elizabeth Me To Merrimack River Ma Out 25 Nm, Atlantic North

51 mph

Measured gust (44 kt)

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

What the National Weather Service wrote

Strong thunderstorm brought wind gusts up to 51 mph at Isle of Shoals.

The wider storm

A hot and humid airmass with heat index values well into the 90s was firmly in place when an upper level trough and associated cold front begin to move into New Hampshire and Maine on the afternoon of June 30th. Storms began to develop and quickly became severe due to very unstable conditions being fueled by the near record heat and humidity. The storms traveled from west to east straight to the coastal waters by late afternoon, bringing with them strong winds.

Began near Isle of Shoals (42.9700, -70.6200).

Source: NOAA Storm Events Database, event 969427. Narratives are written by the National Weather Service forecast office that issued the report.

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