Winter Storm in Wyoming, October 25 to 26, 2011

Name: Winter Storm in Wyoming, October 25 to 26, 2011
Start: 2011-10-25T15:00
End: 2011-10-26T12:00
Location: Wyoming

October 25 to 26, 2011 · NWS CYS · 12 events in 5 counties and zones

A strong, fast-moving Pacific storm system and cold front moved across the central Rockies, and combined with moist upslope flow, generated significant snowfall over much of southeast Wyoming.

Where it happened

Every event with a place to put it; 12 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

Open the live radar over this ground

The toll

Deaths: 0
Injuries: 0
Property damage: None recorded
Crop damage: None recorded
Events: 12

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 CYS wrote it up.

A strong, fast-moving Pacific storm system and cold front moved across the central Rockies, and combined with moist upslope flow, generated significant snowfall over much of southeast Wyoming.

The radar

The national radar mosaic for the moment the first event began.

Open the radar archive at this moment

Event by event

12 winter storm. Local standard time, as filed.

Winter Storm, South Laramie Range

When: October 25, 3:00 PM MST to October 26, 12:00 PM MST
Where: South Laramie Range forecast zone
Reported by: SNOTEL
Coordinates: 41.481, -105.207 (the zone’s center; the record gives no point)

Crow Creek (Elevation 8330 ft) snowfall was estimated at 14 inches based on 15:1 ration with 0.90 inches of snow water equivalent.

Winter Storm, South Laramie Range

When: October 25, 3:00 PM MST to October 26, 12:00 PM MST
Where: South Laramie Range forecast zone
Reported by: Trained Spotter
Coordinates: 41.481, -105.207 (the zone’s center; the record gives no point)

Fifteen inches of snow was estimated 20 miles west of Cheyenne.

Winter Storm, South Laramie Range Foothills

When: October 25, 3:00 PM MST to October 26, 12:00 PM MST
Where: South Laramie Range Foothills forecast zone
Reported by: NWS Employee
Coordinates: 41.481, -105.207 (the zone’s center; the record gives no point)

Seven inches of snow was measured 10 miles northwest of Cheyenne.

Winter Storm, Central Laramie County

When: October 25, 3:00 PM MST to October 26, 12:00 PM MST
Where: Central Laramie County forecast zone
Reported by: Trained Spotter
Coordinates: 41.307, -104.690 (the zone’s center; the record gives no point)

Eight inches of snow was estimated two miles east-southeast of Cheyenne.

Winter Storm, Central Laramie County

When: October 25, 3:00 PM MST to October 26, 12:00 PM MST
Where: Central Laramie County forecast zone
Reported by: CoCoRaHS
Coordinates: 41.307, -104.690 (the zone’s center; the record gives no point)

Eight inches of snow was measured, along with drifts to 15 inches.

Winter Storm, Central Laramie County

When: October 25, 3:00 PM MST to October 26, 12:00 PM MST
Where: Central Laramie County forecast zone
Reported by: Trained Spotter
Coordinates: 41.307, -104.690 (the zone’s center; the record gives no point)

Eleven inches of snow was measured five miles northwest of Cheyenne.

Winter Storm, Central Laramie County

When: October 25, 3:00 PM MST to October 26, 12:00 PM MST
Where: Central Laramie County forecast zone
Reported by: CoCoRaHS
Coordinates: 41.307, -104.690 (the zone’s center; the record gives no point)

Eight inches of snow was measured 10 miles east of Cheyenne.

Winter Storm, Central Laramie County

When: October 25, 3:00 PM MST to October 26, 12:00 PM MST
Where: Central Laramie County forecast zone
Reported by: NWS Employee
Coordinates: 41.307, -104.690 (the zone’s center; the record gives no point)

Nearly nine inches of snow was measured 10 miles north of Cheyenne.

Winter Storm, East Laramie County

When: October 25, 3:00 PM MST to October 26, 12:00 PM MST
Where: East Laramie County forecast zone
Reported by: CoCoRaHS
Coordinates: 41.307, -104.690 (the zone’s center; the record gives no point)

Nearly ten inches of snow was measured seven miles southeast of Burns.

Winter Storm, East Laramie County

When: October 25, 3:00 PM MST to October 26, 12:00 PM MST
Where: East Laramie County forecast zone
Reported by: Trained Spotter
Coordinates: 41.307, -104.690 (the zone’s center; the record gives no point)

Thirteen inches of snow was estimated four miles northwest of Carpenter.

Winter Storm, East Laramie County

When: October 25, 3:00 PM MST to October 26, 12:00 PM MST
Where: East Laramie County forecast zone
Reported by: Trained Spotter
Coordinates: 41.307, -104.690 (the zone’s center; the record gives no point)

Seven inches of snow was measured in Pine Bluffs.

Winter Storm, Laramie Valley

When: October 25, 3:00 PM MST to October 26, 12:00 PM MST
Where: Laramie Valley forecast zone
Reported by: Newspaper
Coordinates: 41.655, -105.724 (the zone’s center; the record gives no point)

Five to eight inches of snow was reported.

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

Every storm in Wyoming in 2011 Every state in 2011 This day in weather history Warnings in Wyoming, October 2011

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 2026-10-01. Each event’s entry at NCEI: 346354, 346355, 346356, 346358, 346359, 346360, 346361, 346362, 346363, 346365, 346366, 347719.