Multiple periods of snowfall fell across southeast Wyoming on the 15th and 16th, with the heaviest snow falling across the higher terrain of the Laramie, Snowy, and Sierra Madre Ranges during the afternoon of 16 February 2024. Lower elevation areas along and east of Interstate 25 observed widespread 2 to 4 inches of snowfall both on the 15th and again on the 16th.
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 CYS wrote it up.
Multiple periods of snowfall fell across southeast Wyoming on the 15th and 16th, with the heaviest snow falling across the higher terrain of the Laramie, Snowy, and Sierra Madre Ranges during the afternoon of 16 February 2024. Lower elevation areas along and east of Interstate 25 observed widespread 2 to 4 inches of snowfall both on the 15th and again on the 16th.
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 14, 4:40 PM MST, 1 hour 20 minutes earlier.
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</html>Hazardous Weather Outlook National Weather Service Cheyenne WY 331 PM MST Wed Feb 14 2024 NEZ002-003-019>021-054-055-095-096-WYZ101>111-113-115>119-152245- Dawes County-Box Butte County-Scotts Bluff County-Banner County- Morrill County-Kimball County-Cheyenne County- Northern Sioux County-Southern Sioux County- Converse County Lower Elevations-Niobrara County- North Laramie Range-Ferris/Seminoe/Shirley Mountains- Shirley Basin-Central Laramie Range and Southwest Platte County- East Platte County-Goshen County-Central Carbon County- North Snowy Range Foothills-Southwest Carbon County- Upper North Platte River Basin-Laramie Valley-South Laramie Range- South Laramie Range Foothills-Central Laramie County- East Laramie County- 331 PM MST Wed Feb 14 2024 This hazardous weather outlook is for portions of panhandle Nebraska...east central Wyoming...south central Wyoming and southeast Wyoming. .DAY ONE...THIS AFTERNOON AND TONIGHT Scattered snow showers are moving across the area this afternoon, which may lead to brief visibility reductions and a quick dusting of snow. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY * Strong winds and areas of snow and blowing snow are possible along portions of Interstate 80 in Carbon county on Thursday. * A cold front will oscillate across the High Plains over the next 24 hours or so, before plunging through the area Thursday night. Expect colder temperatures and light snow across the area on Friday. .Spotter information statement... Spotter activation will not be needed. WYZ112-114-152245- Sierra Madre Range-Snowy Range- 331 PM MST Wed Feb 14 2024 This hazardous weather outlook is for portions of south central Wyoming. .DAY ONE...THIS AFTERNOON AND TONIGHT * Periods of heavy snow and blowing snow are expected in the higher mountains in multiple rounds through Friday night. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY Mountain snow continues through Friday night. .Spotter information statement... Spotter activation will not be needed.
The national radar mosaic for the moment the first event began.
6 heavy snow, 2 winter weather. Local standard time, as filed.
Numerous SNOTEL sites in the Sierra Madre Range estimated snowfall totals around 1 to 2 feet. Old Battle SNOTEL site estimated 28.5 inches of snowfall with 1.9 inches of snow water equivalent.
Numerous SNOTEL sites in the Snowy Range estimated snowfall totals around 1 to 2 feet. Brooklyn Lake SNOTEL site estimated 22.5 inches of snowfall with 1.5 inches of snow water equivalent.
CoCoRaHS observer near Elk Mountain (WY-CR-18) reported 8.1 inches of snowfall.
CoCoRaHS and COOP observers reported between 2 and 4 inches of snowfall around the city of Cheyenne. Official snowfall report of NWS office was 3.6 inches.
CoCoRaHS observer near Horse Creek (WY-LM-229) reported 7.1 inches of snowfall during the afternoon and evening of the 16th. Interstate 25 was closed between Cheyenne and Chugwater for an extended period of time due to winter conditions and crashes.
Trained spotter near Iron Mountain close to the Laramie and southwest Platte County border reported 7 inches of snowfall.
Estimated snowfall totals between 4 and 8 inches north of Interstate 80 in the South Laramie Range based on nearby reports and NOHRSC data.
Public reports and numerous CoCoRaHS observers across Goshen County reported between 1 and 4 inches of snowfall.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Wyoming in 2024Every state in 2024This day in weather historyWarnings in Wyoming, February 2024
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: 1152477, 1152478, 1152630, 1152634, 1152624, 1152626, 1152633, 1152635.