A strong temperature gradient across Central MT and vicinity combined with moisture streaming northward ahead of a more broad Pacific trough to result in some overrunning snow. The snow became locally intense around Bozeman a bit south of where the temperatures gradient was strongest, which prompted Winter Storm Warnings.
Every event with a place to put it; 3 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS TFX wrote it up.
A strong temperature gradient across Central MT and vicinity combined with moisture streaming northward ahead of a more broad Pacific trough to result in some overrunning snow. The snow became locally intense around Bozeman a bit south of where the temperatures gradient was strongest, which prompted Winter Storm Warnings.
The national radar mosaic for the moment the first event began.
2 heavy snow, 1 winter storm. Local standard time, as filed.
The public reports 10 inches new snow 12 miles SSE of Boulder over 24 hours.
Two reports in the Helena valley of 6 inches or greater new snow, including a 9 inch report 1 mile SSW of the center of Helena.
Trained spotter reported greater than 4 inches over a 6 hour span in the Gallatin Valley. Several sources reported winter storm-like impacts, including very low visibility and difficult travel. Although 6 inches of snow was not observed in this zone, the rate warranted a winter storm warning.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Montana in 2025Every state in 2025This day in weather historyWarnings in Montana, February 2025
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 1245092, 1245093, 1245094.