The transition of a longwave trough axis from western North Dakota through western Kansas created a strong gradient to produce high westerly winds across the region. Wind prone areas susceptible to this direction produced high winds during this period.
Every event with a place to put it; 3 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 CYS wrote it up.
The transition of a longwave trough axis from western North Dakota through western Kansas created a strong gradient to produce high westerly winds across the region. Wind prone areas susceptible to this direction produced high winds during this period.
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 Cheyenne, WY wrote its last area forecast discussion before the first event at Feb 19, 4:37 PM MST, 10 hours 48 minutes earlier.
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</html>The national radar mosaic for the moment the first event began.
2 high wind, 1 extreme cold/wind chill. Local standard time, as filed.
Wyoming Department of Transportation sensors near the Interstate 80 Summit measured a wind chill of minus 30 with air temperatures around minus two and thirty mph winds.
Wyoming Department of Transportation sensor at Buford East or one mile east-southeast of Buford measured the reported wind gust.
Wyoming Department of Transportation sensor at Arlington measured the reported wind speed.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Wyoming in 2019Every state in 2019This day in weather historyWarnings in Wyoming, February 2019
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: 808401, 805573, 805574.