Low pressure crossing Wyoming combined with deep moisture to bring locally heavy snow to portions of central Wyoming. The heaviest snow fell across Fremont County, where a band of heavy snow set up during the afternoon and evening hours of November 23rd.
Every event with a place to put it; 8 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.
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.
The episode as NWS RIW wrote it up.
Low pressure crossing Wyoming combined with deep moisture to bring locally heavy snow to portions of central Wyoming. The heaviest snow fell across Fremont County, where a band of heavy snow set up during the afternoon and evening hours of November 23rd. Snowfall rates reached 3 inches an our at times. There were numerous reports of over 16 inches from Lander to Riverton. Over 2 feet of snow fell outside of Lander. Amounts around Riverton ranged from 16 to 22 inches. At the COOP observer near downtown Riverton, a daily snowfall record of 19.2 inches was set. Over 6 inches of snow also fell in the lower elevations of Casper, Park, Natrona and Johnson Counties. Portions of the Wind River Mountains received over 2 feet of snow. The heavy snow and gusty wind led to road closures over portions of the area, including Highway 28 over South Pass.
The national radar mosaic for the moment the first event began.
8 winter storm. Local standard time, as filed.
Snowfall amounts around Dubois ranged from 6 to 12 inches.
A combination of heavy snow and gusty wind led to the closure of roads for a time, including Interstate 25. Over 7 inches of snow fell north of Kaycee WY.
Heavy snow fell in portions of the area, especially from Hudson to Riverton where 12 to 21 inches of snow fell. Snowfall amounts dropped further north, with generally less than 6 inches around Shoshoni.
Heavy snow fell through the Wind River Range, with amounts from 16 to 27 inches. The highest amounts fell in southern portion of the range near Lander.
Snowfall amounts around Lander ranged from 18 to 28 inches of new snow.
In the vicinity of Lucerne, 7 to 8 inches of snow fell.
In the hills around Meeteetse, 7 to 12 inches of snow fell.
At the Natrona County Airport; 10.5 inches of new snow fell. Amounts dropped closer to Casper with amounts from 3 to 5 inches around the city of Casper.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Wyoming in 2023Every state in 2023This day in weather historyWarnings in Wyoming, November 2023
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 2026-09-30. Each event’s entry at NCEI: 1144894, 1144913, 1144899, 1144916, 1144907, 1144909, 1144997, 1144903.