Heavy Snow, Northeast Big Horn Mountains
- When
- April 1, 12:00 AM MST to 6:00 PM MST
- Where
- Northeast Big Horn Mountains forecast zone
- Reported by
- TRAINED SPOTTER
Heavy Snow in Wyoming, April 1, 1999
A cold front dropped south through Montana and Northern Wyoming on the afternoon of March 31. That evening a strong low pressure system crossed the Great Basin and moved into the Northern Plains.
The toll
- Deaths
- 0
- Injuries
- 0
- Property damage
- None recorded
- Crop damage
- None recorded
- Events
- 2
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 BYZ wrote it up.
A cold front dropped south through Montana and Northern Wyoming on the afternoon of March 31. That evening a strong low pressure system crossed the Great Basin and moved into the Northern Plains. This system spread wrap around moisture which produced heavy snowfall on the morning of April 1 as it produced strong upslope in North Central Wyoming while overriding the cold air at the lower levels. Burgess junction received 18 inches of new snow with this system. At lower elevations in Sheridan County the Sheridan Airport picked up 9 inches of snowfall. Story received 10 inches while 6 inches fell at Dayton.
Event by event
2 heavy snow. Local standard time, as filed.
Heavy Snow, Sheridan Foothills
- When
- April 1, 12:00 AM MST to 6:00 PM MST
- Where
- Sheridan Foothills forecast zone
- Reported by
- TRAINED SPOTTER
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
- Heavy Snow in California, April 1 to 2, 1999
- Winter Storm in Utah, April 1 to 2, 1999
- Rip Current in Florida, April 1, 1999
- Cold in Utah, April 1 to 3, 1999
- Blizzard in North Dakota, April 1, 1999
- Damaging Wind in Georgia, April 1, 1999
- Drought in New York, April 1 to 30, 1999
- Drought in Maine, April 1 to 30, 1999
- Drought in Texas, April 1 to 29, 1999
- High Wind in New Mexico, April 1, 1999
- Winter Storm in Colorado, April 1 to 2, 1999
- Flooding in California, April 1, 1999
More
Every storm in Wyoming in 1999Every state in 1999This day in weather historyWarnings in Wyoming, April 1999
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: 5696228, 5696229.