Wyoming, 1997

Heavy Snow in Wyoming, December 1 to 2, 1997

December 1 to 2, 1997 · NWS RIW · 4 events in 4 counties and zones

15 inches of new snow in Sinks Canyon, southwest of Lander; 8 inches in downtown Lander; up to 10 inches in the Big Horn Mountains; 6 inches in Thermopolis. General snowfall amounts between 3 and 6 inches over much of the Wind River Basin.

Where it happened

Every event with a place to put it; 4 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
4

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.

15 inches of new snow in Sinks Canyon, southwest of Lander; 8 inches in downtown Lander; up to 10 inches in the Big Horn Mountains; 6 inches in Thermopolis. General snowfall amounts between 3 and 6 inches over much of the Wind River Basin.

The radar

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

Open the radar archive at this moment

Event by event

4 heavy snow. Local standard time, as filed.

Heavy Snow, Lander Foothills / C Fremont

When
December 1, 8:00 PM MST to December 2, 8:00 AM MST
Where
Lander Foothills / C Fremont forecast zone
Coordinates
43.002, -109.948 (the zone’s center; the record gives no point)

Heavy Snow, South Big Horn Basin / N Hot Springs / W Washakie

When
December 1, 8:00 PM MST to December 2, 8:00 AM MST
Where
South Big Horn Basin / N Hot Springs / W Washakie forecast zone
Coordinates
43.635, -107.022 (the zone’s center; the record gives no point)

Heavy Snow, Western Big Horn Mountains / E Big Horn / E Washakie

When
December 1, 8:00 PM MST to December 2, 8:00 AM MST
Where
Western Big Horn Mountains / E Big Horn / E Washakie forecast zone
Coordinates
42.433, -109.520 (the zone’s center; the record gives no point)

Heavy Snow, Wind River Mtns East / Wc Fremont

When
December 1, 8:00 PM MST to December 2, 8:00 AM MST
Where
Wind River Mtns East / Wc Fremont forecast zone
Coordinates
44.039, -106.585 (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

More

Every storm in Wyoming in 1997Every state in 1997This day in weather historyWarnings in Wyoming, December 1997

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: 5626782, 5626783, 5626784, 5626785.