Winter Storm, Teton & Gros Ventre Mountains
- When
- January 22, 3:00 AM MST to January 24, 8:00 AM MST
- Where
- Teton & Gros Ventre Mountains forecast zone
- Reported by
- Mesonet
- Coordinates
- 43.002, -109.948 (the zone’s center; the record gives no point)
Winter Storm in Wyoming, January 22 to 24, 2010
Enhanced west-northwest flow on the backside of an upper-level closed low generated copious snowfall in the mountains of far west Wyoming. Snowfall amounts ranged from 17 to 41 inches over about a 48-hour period.
Where it happened
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.
- Tornadoes
- Tropical storms and surge
- Floods
- Wind
- Hail
- Winter weather
- Heat and drought
- Cold
- Fire, smoke and dust
- Marine and coastal
- Other
The toll
- Deaths
- 0
- Injuries
- 0
- Property damage
- None recorded
- Crop damage
- None recorded
- Events
- 3
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.
What happened
The episode as NWS RIW wrote it up.
Enhanced west-northwest flow on the backside of an upper-level closed low generated copious snowfall in the mountains of far west Wyoming. Snowfall amounts ranged from 17 to 41 inches over about a 48-hour period. The heaviest snow fell in the Teton Range, where snowfall of 30 inches or more was common. Grand Targhee Ski Area on the west side of the range received 41 inches, 33 of which fell in a 24-hour period beginning Saturday, January 23, at 0500MST. Reports from mid-mountain and Rendezvous Mountain at the Jackson Hole Ski Area recorded similar amounts. Total snowfall of 24 to 30 inches was common along the north border of Grand Teton National Park. To the south, amounts around 20 inches were estimated across the northern Wyoming Range.
In the northern Big Horn Basin, a band of snow formed and quickly produced several inches of snow during the overnight and morning hours of January 22 and 23. Reports from the area ranged from 8 to 12 inches, with the highest totals in and around Lovell.
The radar
The national radar mosaic for the moment the first event began.
Event by event
3 winter storm. Local standard time, as filed.
Winter Storm, Salt River & Wyoming Ranges
- When
- January 22, 10:00 AM MST to January 24, 8:00 AM MST
- Where
- Salt River & Wyoming Ranges forecast zone
- Reported by
- SNOTEL
- Coordinates
- 42.516, -110.286 (the zone’s center; the record gives no point)
Winter Storm, North Big Horn Basin
- When
- January 22, 8:00 PM MST to January 23, 2:00 PM MST
- Where
- North Big Horn Basin forecast zone
- Reported by
- CoCoRaHS
- Coordinates
- 44.524, -108.791 (the zone’s center; the record gives no point)
What these are
- 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.
The same day elsewhere
- Strong Wind in California, January 22, 2010
- Avalanche in Idaho, January 22, 2010
- Tornadoes and Damaging Winds in Florida, January 22, 2010
- Winter Storm in Minnesota, January 22 to 25, 2010
- Winter Storm in South Dakota, January 22 to 23, 2010
- Winter Storm in North Dakota, January 22 to 23, 2010
- Blizzard and Winter Storm in Montana, January 22 to 25, 2010
- Ice Storm and Winter Storm in Minnesota, January 22 to 25, 2010
- Winter Storm in Montana, January 22 to 25, 2010
- Heavy Snow in Arizona, January 22 to 23, 2010
- High Wind in New Mexico, January 22, 2010
- Wildfire and High Wind in Texas, January 22, 2010
More
Every storm in Wyoming in 2010Every state in 2010This day in weather historyWarnings in Wyoming, January 2010
Sources
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: 205230, 205231, 205501.