Thunderstorm Wind in Grafton County, New Hampshire

Thunderstorm Wind June 6, 2026 · Grafton County, New Hampshire

60 mph

Estimated gust (52 kt)

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

What the National Weather Service wrote

Severe thunderstorm wind gusts downed two trees on Interstate 93 north, blocking several lanes.

The wider storm

On the afternoon of June sixth a progressive shortwave trough approached New Hampshire from Vermont. This brought moderate instability aloft along with deep level shear. These ingredients interacted with a hot and humid day for early June that led to amble CAPE that could support severe thunderstorm outflow winds. A line of storms developed in Vermont and progressed across the Connecticut River Valley into New Hampshire bringing with it gusty outflow winds that brought down trees.

Began near Livermore Falls (43.7700, -71.6800).

Source: NOAA Storm Events Database, event 1355769. Narratives are written by the National Weather Service forecast office that issued the report.

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