Thunderstorm Wind in Hillsborough County, New Hampshire

Thunderstorm Wind August 13, 2025 · Hillsborough County, New Hampshire

58 mph

Estimated gust (50 kt)

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

What the National Weather Service wrote

A severe thunderstorm outflow boundary downed numerous trees north of Mount Vernon, partially blocking traffic on N. Main St.

The wider storm

The region was experiencing well above normal temperatures, with high temperatures reaching the low to mid-90s. This created a very warm, humid, and unstable atmosphere. A pre-frontal surface trough moved into NH on the afternoon of August 13th, triggering numerous thunderstorms, a few of the storms became severe in nature. In addition, very heavy rain fell in Nashua area, causing some minor urban flooding.

Began near Mt Vernon (42.9100, -71.6800).

Source: NOAA Storm Events Database, event 1292535. Narratives are written by the National Weather Service forecast office that issued the report.

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