Thunderstorm Wind — Merrimack, New Hampshire

2025-07-20 · near Hill Center, Merrimack, New Hampshire

Event narrative

Severe thunderstorm outflow winds downed a tree down onto a house in Hill.

Wider weather episode

A surface cold front dropping down from Canada interacted with a very hot and unstable airmass in place across the state. Significant shear aloft allowed for some organized thunderstorms. One storm in particular in Sanbornton brought widespread wind damage due to wet microbursts.

View location on OpenStreetMap → (43.5100, -71.7700)

Source: NOAA Storm Events Database, event_id 1288703. Narrative written by the NWS forecast office that issued the report.