Jul 6, 2015
A warm front was oriented west to east across northern Maryland. A warm and moist air mass was south of the boundary and led to an unstable environment. Showers and thunderstorms formed and some storms persisted across the same area in northeast Maryland which led to flash flooding.
Source: NOAA National Weather Service Storm Events Database (event 593721). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in Harford County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.