A closed low pressure system brought widespread precipitation to Montana. Snow levels fell down to 5000ft Monday morning, transitioning rain to wet snow on mountain passes and higher elevated valleys.
Every event with a place to put it; 1 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 closed low pressure system brought widespread precipitation to Montana. Snow levels fell down to 5000ft Monday morning, transitioning rain to wet snow on mountain passes and higher elevated valleys. Enhanced forcing aloft brought heavy snow rates in the Little Belts region.
The national radar mosaic for the moment the first event began.
1 heavy snow. Local standard time, as filed.
Estimated 10 inches of snowfall in 24 hours from the Showdown Ski Resort's snowboard webcam. There is a little uncertainty on the estimation of the start time from the rain to snow transition.
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, May 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 2026-10-01. Each event’s entry at NCEI: 1257874.