Wyoming, 2019Heavy Snow in Wyoming, May 20 to 22, 2019
May 20 to 22, 2019 · NWS CYS · 9 events in 9 counties and zones
Heavy, wet snow fell across much of southeastern Wyoming on the 20th and 21st making for slick commutes and limited power outages. Over 8 inches of snowfall was measured in the City of Cheyenne while heavy snow blanketed the Laramie Range snarling traffic near the Interstate 80 Summit.
Every event with a place to put it; 9 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.
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- Tropical storms and surge
- Floods
- Wind
- Hail
- Winter weather
- Heat and drought
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- 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
- 9
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.
Heavy, wet snow fell across much of southeastern Wyoming on the 20th and 21st making for slick commutes and limited power outages. Over 8 inches of snowfall was measured in the City of Cheyenne while heavy snow blanketed the Laramie Range snarling traffic near the Interstate 80 Summit.
Heavy Snow, South Laramie Range
- When
- May 20, 12:00 PM MST to May 21, 2:00 PM MST
- Where
- South Laramie Range forecast zone
- Reported by
- CoCoRaHS
- Coordinates
- 41.481, -105.207 (the zone’s center; the record gives no point)
Observer located twenty one miles west-southwest of Warren Air Force Base measured 8.2 inches of snowfall.
Heavy Snow, North Laramie Range
- When
- May 20, 12:00 PM MST to May 22, 12:00 AM MST
- Where
- North Laramie Range forecast zone
- Reported by
- SNOTEL
- Coordinates
- 42.253, -105.399 (the zone’s center; the record gives no point)
Windy Peak sensor located at elevation of 7900 feet measured a snow water equivalent of 0.8 inches. Applying a snow to liquid ratio of 15 to 1 produced an estimated snowfall total of 12.0 inches.
Heavy Snow, Central Laramie Range and Southwest Platte County
- When
- May 20, 12:00 PM MST to May 21, 2:00 PM MST
- Where
- Central Laramie Range and Southwest Platte County forecast zone
- Reported by
- Trained Spotter
- Coordinates
- 41.698, -105.127 (the zone’s center; the record gives no point)
Observer seven miles southwest of Wheatland measured 10.0 inches of snowfall.
Heavy Snow, East Platte County
- When
- May 20, 12:00 PM MST to May 21, 4:00 PM MST
- Where
- East Platte County forecast zone
- Reported by
- Public
- Coordinates
- 42.133, -104.966 (the zone’s center; the record gives no point)
Observer in Chugwater measured 8.0 inches of snowfall.
Heavy Snow, East Laramie County
- When
- May 20, 12:00 PM MST to May 21, 3:00 PM MST
- Where
- East Laramie County forecast zone
- Reported by
- Public
- Coordinates
- 41.307, -104.690 (the zone’s center; the record gives no point)
Observer three miles southwest of Albin measured 8.2 inches of snowfall. Additional observers near Burns also measured 8.0 inches of snowfall.
Heavy Snow, Goshen County
- When
- May 20, 1:00 PM MST to May 21, 3:00 PM MST
- Where
- Goshen County forecast zone
- Reported by
- Public
- Coordinates
- 42.088, -104.353 (the zone’s center; the record gives no point)
Observer at Fort Laramie measured 10.0 inches of snowfall.
Heavy Snow, Central Laramie County
- When
- May 20, 4:00 PM MST to May 21, 2:00 PM MST
- Where
- Central Laramie County forecast zone
- Reported by
- Official NWS Observations
- Coordinates
- 41.307, -104.690 (the zone’s center; the record gives no point)
Cheyenne, Wyoming Office measured storm total snowfall of 8.5 inches.
Heavy Snow, South Laramie Range Foothills
- When
- May 20, 6:00 PM MST to May 21, 2:00 PM MST
- Where
- South Laramie Range Foothills forecast zone
- Reported by
- CoCoRaHS
- Coordinates
- 41.481, -105.207 (the zone’s center; the record gives no point)
Observers six miles south and five miles west of Cheyenne measured 8.0 inches of snowfall.
Heavy Snow, Niobrara County
- When
- May 21, 12:00 AM MST to May 22, 3:00 AM MST
- Where
- Niobrara County forecast zone
- Reported by
- Trained Spotter
- Coordinates
- 43.057, -104.475 (the zone’s center; the record gives no point)
Observer in Manville measured 12.0 inches of snowfall while an observer in Lusk measured 9.0 inches.
- 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.
- Tornadoes and Flash Flooding in Missouri, May 20 to 23, 20193 deaths · 2 injured · $19 million · EF3 · 139 events
- Tornadoes and Flash Flooding in Oklahoma, May 20 to 21, 20192 deaths · $534,000 · EF2 · 82 events
- Tornadoes and Flash Flood in Texas, May 20 to 21, 20192 injured · $705,000 · EF3 · 45 events
- Flooding in Oklahoma, May 20 to 31, 20192 deaths · 21 events
- Tornadoes and Flash Flooding in Oklahoma, May 20 to 22, 20192 injured · $2.4 million · EF2 · 79 events
- Tornadoes and Flash Flood in Kansas, May 20 to 22, 2019$1.1 million · EF1 · 13 events
- Tornadoes and Flood in Texas, May 20 to 21, 2019$360,000 · EF0 · 21 events
- Hail and Winter Weather in California, May 20 to 21, 2019$286,000 · 0.75 in hail · 2 events
- Tornado and Flash Flooding in Texas, May 20, 2019EF0 · 42 events
- Flash Flooding and Flooding in Kansas, May 20 to 23, 2019$10,000 · 1.5 in hail · 31 events
- Flooding in Minnesota, May 20 to 31, 2019$27,000 · 2 events
- Hail in Arkansas, May 20, 2019$25,000 · 1.75 in hail · 3 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: 817066, 817070, 817072, 817073, 817077, 817074, 817061, 817068, 817078.