Jul 9, 2025
An anomalously moist airmass ahead of a frontal boundary sparked numerous showers and thunderstorms across the District of Columbia. Instantaneous rain rates approached five to six inches an hour during the evening, but were transient. Storms still dropped a quick one to two inches in twenty minutes, resulting in flash flooding throughout the District.
Source: NOAA National Weather Service Storm Events Database (event 1261997). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in District Of Columbia County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.