Flash Flood — Howard, Maryland

2025-07-09 · near Lisbon, Howard, Maryland

Event narrative

Maryland Route 97 closed due to flooding at Hoods Mill Road.

Wider weather episode

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.

View location on OpenStreetMap → (39.3451, -77.0455)

Source: NOAA Storm Events Database, event_id 1261981. Narrative written by the NWS forecast office that issued the report.