Heavy Snow, Southwest Big Horn Basin
- When
- February 26, 5:00 AM MST to February 29, 2:00 AM MST
- Where
- Southwest Big Horn Basin forecast zone
- Reported by
- TRAINED SPOTTER
- Coordinates
- 43.719, -108.442 (the zone’s center; the record gives no point)
Heavy Snow in Wyoming, February 26 to 29, 2004
Two potent winter storms dropped heavy snow across western and central Wyoming. General snowfall accumulations ranged from 3 to 6 inches in the lowest elevations of southwest Wyoming, increasing to 9 to 12 inches in lower elevations of central Wyoming.
Where it happened
Every event with a place to put it; 21 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
- 21
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.
Two potent winter storms dropped heavy snow across western and central Wyoming. General snowfall accumulations ranged from 3 to 6 inches in the lowest elevations of southwest Wyoming, increasing to 9 to 12 inches in lower elevations of central Wyoming. Upwards of 2 feet of snow fell in the Wyoming, Salt, Wind River, and Big Horn Mountains. Snowfall combined with some areas of 20 to 30 mph wind and created difficult travelling conditions through much of the state.
The radar
The national radar mosaic for the moment the first event began.
Event by event
21 heavy snow. Local standard time, as filed.
Heavy Snow, Bighorn Mountains Southeast
- When
- February 26, 5:00 AM MST to February 29, 2:00 AM MST
- Where
- Bighorn Mountains Southeast forecast zone
- Reported by
- TRAINED SPOTTER
- Coordinates
- 43.635, -107.022 (the zone’s center; the record gives no point)
Heavy Snow, Bighorn Mountains West
- When
- February 26, 5:00 AM MST to February 29, 2:00 AM MST
- Where
- Bighorn Mountains West forecast zone
- Reported by
- TRAINED SPOTTER
- Coordinates
- 43.695, -107.538 (the zone’s center; the record gives no point)
Heavy Snow, Casper Mountain
- When
- February 26, 5:00 AM MST to February 29, 2:00 AM MST
- Where
- Casper Mountain forecast zone
- Reported by
- TRAINED SPOTTER
- Coordinates
- 42.962, -106.798 (the zone’s center; the record gives no point)
Heavy Snow, East Sweetwater County
- When
- February 26, 5:00 AM MST to February 29, 2:00 AM MST
- Where
- East Sweetwater County forecast zone
- Reported by
- TRAINED SPOTTER
- Coordinates
- 41.660, -108.879 (the zone’s center; the record gives no point)
Heavy Snow, Flaming Gorge
- When
- February 26, 5:00 AM MST to February 29, 2:00 AM MST
- Where
- Flaming Gorge forecast zone
- Reported by
- TRAINED SPOTTER
- Coordinates
- 41.660, -108.879 (the zone’s center; the record gives no point)
Heavy Snow, Green Mountains & Rattlesnake Range
- When
- February 26, 5:00 AM MST to February 29, 2:00 AM MST
- Where
- Green Mountains & Rattlesnake Range forecast zone
- Reported by
- TRAINED SPOTTER
- Coordinates
- 42.554, -108.102 (the zone’s center; the record gives no point)
Heavy Snow, Lander Foothills
- When
- February 26, 5:00 AM MST to February 29, 2:00 AM MST
- Where
- Lander Foothills forecast zone
- Reported by
- TRAINED SPOTTER
- Coordinates
- 43.041, -108.630 (the zone’s center; the record gives no point)
Heavy Snow, Natrona County Lower Elevations
- When
- February 26, 5:00 AM MST to February 29, 2:00 AM MST
- Where
- Natrona County Lower Elevations forecast zone
- Reported by
- TRAINED SPOTTER
- Coordinates
- 42.962, -106.798 (the zone’s center; the record gives no point)
Heavy Snow, Northeast Johnson County
- When
- February 26, 5:00 AM MST to February 29, 2:00 AM MST
- Where
- Northeast Johnson County forecast zone
- Reported by
- TRAINED SPOTTER
- Coordinates
- 44.039, -106.585 (the zone’s center; the record gives no point)
Heavy Snow, Owl Creek & Bridger Mountains
- When
- February 26, 5:00 AM MST to February 29, 2:00 AM MST
- Where
- Owl Creek & Bridger Mountains forecast zone
- Reported by
- TRAINED SPOTTER
- Coordinates
- 43.241, -107.957 (the zone’s center; the record gives no point)
Heavy Snow, Rock Springs & Green River
- When
- February 26, 5:00 AM MST to February 29, 2:00 AM MST
- Where
- Rock Springs & Green River forecast zone
- Reported by
- TRAINED SPOTTER
- Coordinates
- 41.660, -108.879 (the zone’s center; the record gives no point)
Heavy Snow, Salt River & Wyoming Ranges
- When
- February 26, 5:00 AM MST to February 29, 2:00 AM MST
- Where
- Salt River & Wyoming Ranges forecast zone
- Reported by
- TRAINED SPOTTER
- Coordinates
- 42.516, -110.286 (the zone’s center; the record gives no point)
Heavy Snow, South Lincoln County
- When
- February 26, 5:00 AM MST to February 29, 2:00 AM MST
- Where
- South Lincoln County forecast zone
- Reported by
- TRAINED SPOTTER
- Coordinates
- 42.264, -110.656 (the zone’s center; the record gives no point)
Heavy Snow, Star Valley
- When
- February 26, 5:00 AM MST to February 29, 2:00 AM MST
- Where
- Star Valley forecast zone
- Reported by
- TRAINED SPOTTER
- Coordinates
- 42.264, -110.656 (the zone’s center; the record gives no point)
Heavy Snow, Upper Green River Basin
- When
- February 26, 5:00 AM MST to February 29, 2:00 AM MST
- Where
- Upper Green River Basin forecast zone
- Reported by
- TRAINED SPOTTER
- Coordinates
- 42.433, -109.520 (the zone’s center; the record gives no point)
Heavy Snow, Upper Green River Basin Foothills
- When
- February 26, 5:00 AM MST to February 29, 2:00 AM MST
- Where
- Upper Green River Basin Foothills forecast zone
- Reported by
- TRAINED SPOTTER
- Coordinates
- 42.767, -109.915 (the zone’s center; the record gives no point)
Heavy Snow, Upper Wind River Basin
- When
- February 26, 5:00 AM MST to February 29, 2:00 AM MST
- Where
- Upper Wind River Basin forecast zone
- Reported by
- TRAINED SPOTTER
- Coordinates
- 43.041, -108.630 (the zone’s center; the record gives no point)
Heavy Snow, Wind River Basin
- When
- February 26, 5:00 AM MST to February 29, 2:00 AM MST
- Where
- Wind River Basin forecast zone
- Reported by
- TRAINED SPOTTER
- Coordinates
- 43.041, -108.630 (the zone’s center; the record gives no point)
Heavy Snow, Wind River Mountains East
- When
- February 26, 5:00 AM MST to February 29, 2:00 AM MST
- Where
- Wind River Mountains East forecast zone
- Reported by
- TRAINED SPOTTER
- Coordinates
- 42.904, -109.273 (the zone’s center; the record gives no point)
Heavy Snow, Wind River Mountains West
- When
- February 26, 5:00 AM MST to February 29, 2:00 AM MST
- Where
- Wind River Mountains West forecast zone
- Reported by
- TRAINED SPOTTER
- Coordinates
- 42.904, -109.273 (the zone’s center; the record gives no point)
What these are
- Heavy Snow
- Snowfall reaching the local warning threshold without the other hazards of a winter storm.
After NWS Directive 10-1605, the rules offices file Storm Data by.
The same day elsewhere
- Winter Storm and Winter Weather in South Carolina, February 26, 2004
- Heavy Snow in North Carolina, February 26 to 27, 2004
- Heavy Snow in South Carolina, February 26 to 27, 2004
- Winter Storm in Georgia, February 26, 2004
- Winter Storm in North Carolina, February 26 to 27, 2004
- Heavy Snow in Tennessee, February 26, 2004
- Dense Fog in Wisconsin, February 26, 2004
- Heavy Snow in North Carolina, February 26, 2004
- Heavy Snow in North Carolina, February 26 to 27, 2004
- Winter Weather in North Carolina, February 26, 2004
- Winter Weather in South Carolina, February 26, 2004
- Winter Weather in Georgia, February 26, 2004
More
Every storm in Wyoming in 2004Every state in 2004This day in weather historyWarnings in Wyoming, February 2004
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: 5382497, 5382498, 5382499, 5382500, 5382501, 5382502, 5382503, 5382504, 5382505, 5382615, 5382616, 5382617, 5382618, 5382619, 5382620, 5382621, 5382622, 5382623, 5382624, 5382625, 5382626.