Oct 28, 2021
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 National Weather Service Storm Events Database (event 990002). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in Anne Arundel County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.