Flood — Weld, Colorado

2025-08-10 · near Johnstown, Weld, Colorado

Event narrative

Minor street flooding at CO-60 and Harriett Avenue in Milliken, relayed via NWSChat.

Wider weather episode

Strong to severe thunderstorms develop across northeast Colorado. Large hail was the main impact. A brief tornado form east of Denver over the open plains. No damage was reported with the tornado. Numerous photos and reports were passed along to the National Weather Service.

View location on OpenStreetMap → (40.3301, -104.8570)

Source: NOAA Storm Events Database, event_id 1272002. Narrative written by the NWS forecast office that issued the report.