Flash Flood — Hancock, Maine

2021-06-09 · near South Hancock, Hancock, Maine

Event narrative

Rainfall totals generally ranged from 2.00 to 4.00 inches...with local totals in excess of 5.00 inches. The heavy rains produced flash flooding. Numerous roads were closed or damaged to varying extents due to flooding and washouts. Damage to bridges and culverts also occurred. Numerous carriage roads and hiking trails were damaged in Acadia National Park on Mount Desert Island.

Wider weather episode

Slow moving training thunderstorms developed across the Downeast coast during the early morning hours of the 9th along a cold front. The thunderstorms produced very heavy rainfall and flash flooding along portions of the Downeast coast. Rainfall totals of 2.00 to 4.00 inches were common...with local totals in excess of 5.00 inches. The resultant flash flooding damaged many roads...culverts and bridges to varying extents. Road closures were common with large portions of several roads entirely washed out or heavily damaged. The road damage was particularly extensive in the towns of Machias...Winter Harbor and Prospect Harbor. Some residents were isolated due to washed out roads.

View location on OpenStreetMap → (44.4984, -68.2673)

Source: NOAA Storm Events Database, event_id 965595. Narrative written by the NWS forecast office that issued the report.