Winter Weather — Gallatin Valley, Montana

2025-11-24 · Gallatin Valley, Montana

Event narrative

MT DOT webcams showed a thunderstorm quickly switch over heavy snow with visibility around a half mile or less near Belgrade. The Bozeman Airport ASOS (KBZN) also showed a thunderstorm quickly transitioning to a half mile of moderate snow from 12:40 to 12:55 MST. Visibility improved around 13:15 MST.

Wider weather episode

An upper-level disturbance brought a winter system to the region. This brought moderate mountain snow with localized heavy snow at the mountain peaks. A strong Pacific cold front created snow squalls along the I-90 corridor. There were isolated thunderstorms ahead of the snow squalls, which brought localized severe wind gusts at Bozeman. The cold front also produced localized high winds in Southwest MT. Along the Hi-line, a warm front brought freezing rain during the morning.

Source: NOAA Storm Events Database, event_id 1298727. Narrative written by the NWS forecast office that issued the report.