Flash Flood — Grafton, New Hampshire

2024-07-31 · near Pike, Grafton, New Hampshire

Event narrative

Significant flooding along the Oliverian Brook caused a washout on NH-25 at Jeffers Hill Road in Piermont.

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 → (44.0300, -72.0000)

Source: NOAA Storm Events Database, event_id 1192524. Narrative written by the NWS forecast office that issued the report.