Hail — Cascade, Montana

2025-07-31 · near Great Falls, Cascade, Montana

Event narrative

Public reported 1 inch hail. Time of report estimated via radar.

Wider weather episode

An upper-level shortwave combined with monsoon moisture brought a few severe thunderstorms and localized areas of heavy rainfall to North-Central MT. This resulted in isolated large hail, flooding, and a landspout. A stationary storm developed directly over the Great Falls urban area; this produced heavy rainfall and flash flooding in the city, with one gauge reporting 2.25 inches of rain in an hour. Another thunderstorm produced heavy rainfall over the Horse Gulch burn scar, which caused flash flooding downstream.

View location on OpenStreetMap → (47.5200, -111.3300)

Source: NOAA Storm Events Database, event_id 1280833. Narrative written by the NWS forecast office that issued the report.