Large snow amounts occurred across much of south-central Montana during this period, producing snowfall amounts up to a foot in many locations, especially around Billings. Numerous slide-offs of vehicles were reported.
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 BYZ wrote it up.
Large snow amounts occurred across much of south-central Montana during this period, producing snowfall amounts up to a foot in many locations, especially around Billings. Numerous slide-offs of vehicles were reported.
The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Billings, MT wrote its last area forecast discussion before the first event at Dec 10, 4:59 PM MST, 20 hours 1 minute earlier.
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</html>The national radar mosaic for the moment the first event began.
1 winter storm. Local standard time, as filed.
South Fork Shields reported 12 inches of snow.
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, December 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 2026-09-30. Each event’s entry at NCEI: 1308140.