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Marine Hail · Atlantic North

Marine Hail June 15, 2021 · Cape Elizabeth Me To Merrimack River Ma Out 25 Nm, Atlantic North

0.75 in
Hail diameter

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

What the National Weather Service wrote

A strong thunderstorm brought large hail with .75 hail being reported at Seabrook Beach, NH.

The wider storm

An upper level disturbance and associated area of developing low pressure across Southern New England helped trigger thunderstorms across the New Hampshire Seacoast. An unstable airmass caused by an advancing cold pool aloft and increasing shear allowed for strong thunderstorms bringing hail and gusty winds to the coastal waters.

Began near Isle of Shoals (42.8743, -70.8176).

Source: NOAA Storm Events Database, event 966460. Narratives are written by the National Weather Service forecast office that issued the report.

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