Coastal Flood — Dorchester, Maryland

2025-10-29 to 2025-10-31 · Dorchester, Maryland

Event narrative

Strong northeast winds between coastal low pressure offshore and high pressure over eastern Canada resulted in an extended period of coastal flooding. The gauge at Bishop's Head measured major coastal flooding at 4.42 ft MLLW at 7:36 PM EDT October 30th. The gauge also recorded moderate tidal flooding 4.38 ft MLLW at 7:30 AM EDT on October 30 and 3.70 ft MLLW at 7:48 PM EDT on October 29th.

Wider weather episode

Low pressure off the Mid-Atlantic coast combined with high pressure in Canada, resulting in a lengthy period of northeasterly onshore flow. Increasing tidal anomalies resulted in moderate to locally major tidal flooding over an extended period.

Source: NOAA Storm Events Database, event_id 1297410. Narrative written by the NWS forecast office that issued the report.