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Flood in Hillsborough County, New Hampshire
Flood May 10, 2025 · Hillsborough County, New Hampshire
Where the report was made, with tornadoes recorded within 15 miles over the years.
What the National Weather Service wrote
Heavy rainfall of 3 inches in the local area caused flooding of Boston Post Road between Ferry Road and Simeon Wilson Road in Amherst due to the Souhegan River over flowing its bands.
The wider storm
A slow moving low pressure system tracked across the region between the 9th and the 10th. The region was vulnerable to flooding due to saturated ground conditions and elevated stream flows from days of on and off again rainfall. The event was drawn out with a fairly steady rain with rates <0.5/hr. There was a period of heavier rainfall as the system received jet enhancement as it lifted to the northeast. Rainfall amounts were measured between 2 and 3 inches, primarily across Hillsborough County New Hampshire. Some small streams came out of banks causing flooding around Milford, Amherst, and Lyndeborough.
Began near Ponemah (42.8309, -71.5907).
Source: NOAA Storm Events Database, event 1267993. Narratives are written by the National Weather Service forecast office that issued the report.
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