An arctic front moved across the Billings Forecast Area. This was followed by a moist flow aloft off the Pacific.
Every event with a place to put it; 2 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 BYZ wrote it up.
An arctic front moved across the Billings Forecast Area. This was followed by a moist flow aloft off the Pacific. This moist flow aloft produced a multi-day overrunning snow event across northern Wyoming. Sheridan County received heavy snow accumulations.|The storm impacted travel across the area. Interstate 90 was shut down from Sheridan to Gillette for nearly a day.
The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Billings, MT wrote its last area forecast discussion before the first event at Feb 19, 2:45 PM MST, 15 hours 15 minutes earlier.
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</html>The national radar mosaic for the moment the first event began.
2 winter storm. Local standard time, as filed.
Severe driving conditions were reported. Highway 14 was closed.
Snowfall amounts of 7 to 9 inches were reported. In addition, Interstate 90 was closed for more than 24 hours.
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, February 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: 1075678, 1075679.