Aug 6, 2019
A weak upper-level trough remained overhead and there was also a surface trough around the area. A light southerly flow ahead of the boundary caused dewpoints to reach the 70s. A few showers and thunderstorms developed, and some storms produced heavy rainfall that led to flooding and flash flooding. The heaviest rain fell around the Baltimore Metropolitan area due to training convection.
Source: NOAA National Weather Service Storm Events Database (event 843431). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in Baltimore County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.