A fast moving upper level disturbance tightened the pressure gradient, which resulted in a brief period of strong gap winds. Some gusts of 55 to 65 mph were observed.
Every event with a place to put it; 9 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.
A fast moving upper level disturbance tightened the pressure gradient, which resulted in a brief period of strong gap winds. Some gusts of 55 to 65 mph were observed.
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 Oct 24, 4:20 PM MST, 21 hours 25 minutes earlier.
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</html>The national radar mosaic for the moment the first event began.
9 high wind. Local standard time, as filed.
The WYDOT sensor at Foote Creek measured sustained winds of 40 mph or higher, with a peak gust of 59 mph at 25/1540 MST.
The WYDOT sensor at Halleck Ridge measured sustained winds of 40 mph or higher, with a peak gust of 59 mph at 25/1540 MST.
The WYDOT sensor at Interstate 80 mile post 249 measured sustained winds of 40 mph or higher.
The WYDOT sensor at Cooper Cove measured peak wind gusts of 60 mph.
The UPR sensor at Emkay measured sustained winds of 40 mph or higher.
The WYDOT sensor at Buford East measured sustained winds of 40 mph or higher, with a peak gust of 58 mph at 25/2100 MST.
The WYDOT sensor at Bordeaux measured peak wind gusts of 61 mph.
The WYDOT sensor at Remount Road measured sustained winds of 40 mph or higher.
The WYDOT sensor at Lone Tree measured peak wind gusts of 58 mph.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Wyoming in 2017Every state in 2017This day in weather historyWarnings in Wyoming, October 2017
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: 725025, 725026, 725027, 725024, 725034, 725028, 725023, 725030, 725029.