Hail — Jefferson, Montana

2025-07-28 · near Clancy, Jefferson, Montana

Event narrative

Trained spotter reports hail slightly larger than quarter sized.

Wider weather episode

A persistent troughing pattern brought in good instability and shear to produce severe thunderstorms across the region over the 3 day time frame with strong winds as the primary hazard. There was also isolated large hail. Anomalously high moisture content and slower moving storms brought localized flooding. A thunderstorm produced heavy rainfall and caused flooding in Havre and in Clear Creek on the 27th. The Havre airport reported 1.72 inches in about 45 minutes, with other reports in town estimated 2.5 of rain quickly. There were also flooding along Highway 69 & 55 in Jefferson County on the 29th.

View location on OpenStreetMap → (46.5200, -111.9100)

Source: NOAA Storm Events Database, event_id 1280775. Narrative written by the NWS forecast office that issued the report.