Flash Flood in Sullivan County, New Hampshire

Flash Flood September 8, 2023 · Sullivan County, New Hampshire

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

What the National Weather Service wrote

An un-named tributary to the Sugar River flows from south to north out of Hubbard Hill came out of banks on the 8th. Floodwaters damaged the intersection of Roberts Road and Borough Road. An unofficial weather station in the community measured over 2 and a half inches, with instantaneous rain rates peaking over 4 inches an hour around 5 PM. Radar estimated a storm total rainfall between 2.5 to 3.5 inches over the Charlestown area.

The wider storm

Localized flash flooding was observed after a slow moving front brought multiple rounds of showers and thunderstorms across Massachusetts into southern New Hampshire. The airmass was very moist and supported rainfall rates over 2 inches per hour.

Began near North Charlestown (43.3054, -72.3715).

Source: NOAA Storm Events Database, event 1131275. Narratives are written by the National Weather Service forecast office that issued the report.

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