Flash Flood — Montgomery, Maryland

2025-07-19 · near Takoma Park, Montgomery, Maryland

Event narrative

Flood sensor at Sligo Creek Parkway and New Hampshire

Avenue (MD 650) had a 10 feet rise in 30 minutes.

Wider weather episode

An unstable atmosphere along with plenty of moisture led to the development of showers and thunderstorms. The thunderstorms were slow moving, and trained over the same areas in spots resulting in flash flooding. Localized rainfall totals of 2 to 4 inches were observed, with upwards of 5 inches in the most persistent thunderstorms.

View location on OpenStreetMap → (38.9800, -76.9900)

Source: NOAA Storm Events Database, event_id 1264790. Narrative written by the NWS forecast office that issued the report.