Flash Flood — Grafton, New Hampshire

2024-07-31 · near Warren Morse Fld Arp, Grafton, New Hampshire

Event narrative

Heavy rainfall caused significant washouts on NH-25C in Warren.

Wider weather episode

An area of low pressure supported widespread showers and thunderstorms on July 30th and 31st. Slow storm motions allowed heavy rain to fall over the same area, with high rainfall rates over 2 inches per hour. The most significant flooding occurred over Grafton County where saturated ground conditions and steep terrain supported flash flooding in Piermont.

View location on OpenStreetMap → (43.9600, -71.9600)

Source: NOAA Storm Events Database, event_id 1192523. Narrative written by the NWS forecast office that issued the report.