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Flash Flood — Baltimore, MD

Jul 9, 2025

An anomalously moist airmass ahead of a frontal boundary sparked numerous showers and thunderstorms across Maryland. Instantaneous rain rates approached five to six inches an hour in the bigger storms. Storm total rainfall of one and a half to four inches resulted in flooding and flash flooding in areas throughout the evening of July 9th.

Source: NOAA National Weather Service Storm Events Database (event 1261974). Narrative written by NWS staff at the time of the event.

Flood Risk Context for Baltimore, MD

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.

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