Montana, 2010Winter Storm in Montana, December 29 to 31, 2010
December 29 to 31, 2010 · NWS BYZ · 6 events in 6 counties and zones
An upper low pressure system developed over the Central Rockies and allowed a cold air mass to drop south out of Canada. The system was followed by a very moist and strong westerly flow aloft.
Every event with a place to put it; 5 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.
- Tornadoes
- Tropical storms and surge
- Floods
- Wind
- Hail
- Winter weather
- Heat and drought
- Cold
- Fire, smoke and dust
- Marine and coastal
- Other
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- Deaths
- 0
- Injuries
- 0
- Property damage
- None recorded
- Crop damage
- None recorded
- Events
- 6
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.
An upper low pressure system developed over the Central Rockies and allowed a cold air mass to drop south out of Canada. The system was followed by a very moist and strong westerly flow aloft.
Winter Storm, Musselshell
- When
- December 29, 6:00 AM MST to December 30, 3:45 PM MST
- Where
- Musselshell forecast zone
- Reported by
- Trained Spotter
- Coordinates
- 46.497, -108.398 (the zone’s center; the record gives no point)
The Roundup area received between 8 and 10 inches of snow.
Winter Storm, Golden Valley
- When
- December 29, 6:00 AM MST to December 30, 3:45 PM MST
- Where
- Golden Valley forecast zone
- Reported by
- Trained Spotter
- Coordinates
- 46.381, -109.175 (the zone’s center; the record gives no point)
The Ryegate area received anywhere from 6 to 11 inches of snow.
Winter Storm, Yellowstone
- When
- December 29, 1:00 PM MST to December 30, 4:00 AM MST
- Where
- Yellowstone forecast zone
- Reported by
- Trained Spotter
Snowfall of 5 to 7 inches was reported across the area.
Winter Storm, Livingston Area
- When
- December 29, 1:00 PM MST to December 30, 3:38 AM MST
- Where
- Livingston Area forecast zone
- Reported by
- ASOS
- Coordinates
- 45.488, -110.526 (the zone’s center; the record gives no point)
Areas just southeast of Livingston received around 8 inches of snow. In addition, visibilities of 1/4 to 3/4 miles were reported at times.
Winter Storm, Northern Park County
- When
- December 29, 1:00 PM MST to December 30, 3:38 AM MST
- Where
- Northern Park County forecast zone
- Reported by
- Trained Spotter
- Coordinates
- 45.488, -110.526 (the zone’s center; the record gives no point)
Snowfall of 4 to 6 inches along with drifts 2-3 feet deep were reported across Northern Park County.
Winter Storm, Powder River
- When
- December 30, 3:00 PM MST to December 31, 2:00 PM MST
- Where
- Powder River forecast zone
- Reported by
- Trained Spotter
- Coordinates
- 45.395, -105.630 (the zone’s center; the record gives no point)
The Sonnette and Broadus areas received between 6 and 7 inches of snow.
- Winter Storm
- A storm that brought snow, sleet or freezing rain at warning levels, usually over several hours or days.
After NWS Directive 10-1605, the rules offices file Storm Data by.
- Blizzard and Heavy Snow in New Mexico, December 29 to 30, 20101 death · $5,000 · 61 kt wind · 23 events
- Dense Fog and Winter Weather in Minnesota, December 29 to 31, 20101 death · $10,000 · 10 events
- Avalanche in Montana, December 29, 20101 death · 1 injured · 1 event
- Winter Weather and Dense Fog in Wisconsin, December 29 to 31, 201010 injured · $338,000 · 13 events
- Heavy Snow and High Wind in Arizona, December 29 to 30, 201016 injured · $1,000 · 52 kt wind · 10 events
- Damaging Winds and Lightning Strike in Louisiana, December 29, 2010$5.0 million · 70 kt wind · 4 events
- Blizzard and Winter Storm in Montana, December 29 to 30, 201024 events
- Winter Storm and Winter Weather in Colorado, December 29 to 31, 201021 events
- Dense Fog in Wisconsin, December 29 to 31, 2010$10,000 · 20 events
- Blizzard and Heavy Snow in North Dakota, December 29 to 31, 201018 events
- Blizzard and Winter Storm in Wyoming, December 29 to 31, 201013 events
- Winter Storm in Wyoming, December 29 to 31, 201012 events
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: 272899, 272901, 272902, 272904, 272906, 272898.