Hail in Cascade County, Montana

Hail July 31, 2025 · Cascade County, Montana

1 in

Hail diameter

Where the report was made, with tornadoes recorded within 15 miles over the years.

What the National Weather Service wrote

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

The wider storm

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.

Began near Great Falls (47.5200, -111.3300).

Source: NOAA Storm Events Database, event 1280833. Narratives are written by the National Weather Service forecast office that issued the report.

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