Coastal Flood — Southeast Harford, Maryland

2021-10-30 · Southeast Harford, Maryland

Event narrative

Havre de Grace reached moderate coastal very early on the 30th with a crest of 5.6 ft later that day. No reports of moderate coastal flooding were received.

Wider weather episode

A strong pressure gradient between low pressure over the Ohio Valley and strong high pressure over Quebec, CA resulted in a strong southeast onshore flow that brought the highest water levels to the Chesapeake Bay region and Tidal Potomac River since Tropical Storm Isabel in September 2003.

Source: NOAA Storm Events Database, event_id 989799. Narrative written by the NWS forecast office that issued the report.