Cheyenne, Wyoming
Regional Weather Alerts
| Alert: | Winter Storm Warning |
| Area(s): | Salt River and Wyoming Ranges |
| Effective: | 2025-12-19 @ 6:13 pm -> 2025-12-20 @ 6:00 am |
| Onset: | 2025-12-19 @ 6:13 pm -> 2025-12-20 @ 6:00 am |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Riverton WY on 2025-12-19 @ 6:13 pm |
| Headline: | Winter Storm Warning issued December 19 at 5:13PM MST until December 20 at 5:00AM MST by NWS Riverton WY |
| Description: |
* WHAT...Additional snow accumulations of 4 to 8 inches. Winds gusting as high as 70 mph. * WHERE...Salt River and Wyoming Ranges. * WHEN...Until 5 AM MST Saturday. * IMPACTS...Travel could be very difficult including over Salt River Pass. Blowing snow could significantly reduce visibility. |
| Alert: | Winter Storm Warning |
| Area(s): | Absaroka Mountains; Teton and Gros Ventre Mountains |
| Effective: | 2025-12-19 @ 6:13 pm -> 2025-12-20 @ 6:00 am |
| Onset: | 2025-12-19 @ 6:13 pm -> 2025-12-20 @ 6:00 am |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Riverton WY on 2025-12-19 @ 6:13 pm |
| Headline: | Winter Storm Warning issued December 19 at 5:13PM MST until December 20 at 5:00AM MST by NWS Riverton WY |
| Description: |
* WHAT...Additional snow accumulations of 2 to 6 inches across the Absarokas and 4 to 8 inches across the Tetons and Gros Ventres. Winds gusting as high as 70 mph. * WHERE...Absaroka Mountains and Teton and Gros Ventre Mountains. * WHEN...Until 5 AM MST Saturday. * IMPACTS...Travel could be very difficult. The hazardous conditions will impact travel across Teton and Togwotee Passes. Blowing and drifting of snow is expected. |
| Alert: | Winter Weather Advisory |
| Area(s): | Jackson Hole; Star Valley |
| Effective: | 2025-12-19 @ 6:13 pm -> 2025-12-20 @ 6:00 am |
| Onset: | 2025-12-19 @ 6:13 pm -> 2025-12-20 @ 6:00 am |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Riverton WY on 2025-12-19 @ 6:13 pm |
| Headline: | Winter Weather Advisory issued December 19 at 5:13PM MST until December 20 at 5:00AM MST by NWS Riverton WY |
| Description: |
* WHAT...Additional snow accumulations around an inch. Winds gusting as high as 60 mph. * WHERE...Jackson Hole and Star Valley. * WHEN...Until 5 AM MST Saturday. * IMPACTS...Travel could be difficult. |
| Alert: | Winter Storm Warning |
| Area(s): | Yellowstone National Park |
| Effective: | 2025-12-19 @ 6:13 pm -> 2025-12-20 @ 6:00 am |
| Onset: | 2025-12-19 @ 6:13 pm -> 2025-12-20 @ 6:00 am |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Riverton WY on 2025-12-19 @ 6:13 pm |
| Headline: | Winter Storm Warning issued December 19 at 5:13PM MST until December 20 at 5:00AM MST by NWS Riverton WY |
| Description: |
* WHAT...Additional snow accumulations of 2 to 4 inches. Additional snow around Mammoth up to an inch. Winds may gust as high as 55 mph at times. * WHERE...Yellowstone National Park. * WHEN...Until 5 AM MST Saturday. * IMPACTS...Travel could be very difficult, especially in the backcountry. |
| Alert: | Winter Storm Warning |
| Area(s): | Wind River Mountains West; Wind River Mountains East |
| Effective: | 2025-12-19 @ 6:13 pm -> 2025-12-20 @ 6:00 am |
| Onset: | 2025-12-19 @ 6:13 pm -> 2025-12-20 @ 6:00 am |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Riverton WY on 2025-12-19 @ 6:13 pm |
| Headline: | Winter Storm Warning issued December 19 at 5:13PM MST until December 20 at 5:00AM MST by NWS Riverton WY |
| Description: |
* WHAT...Additional snow accumulations of 4 to 8 inches and up to 12 inches across highest terrain. 2 to 5 inches of additional snow is expected for South Pass and Union Pass. Winds could gust as high as 60 to 70 mph with locally stronger gusts possible. * WHERE...Wind River Mountains East and Wind River Mountains West. * WHEN...Until 5 AM MST Saturday. * IMPACTS...Travel could be very difficult. Blowing snow could significantly reduce visibility. The hazardous conditions could impact travel along South Pass. |
| Alert: | Winter Weather Advisory |
| Area(s): | Upper Green River Basin Foothills |
| Effective: | 2025-12-19 @ 6:13 pm -> 2025-12-20 @ 6:00 am |
| Onset: | 2025-12-19 @ 6:13 pm -> 2025-12-20 @ 6:00 am |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Riverton WY on 2025-12-19 @ 6:13 pm |
| Headline: | Winter Weather Advisory issued December 19 at 5:13PM MST until December 20 at 5:00AM MST by NWS Riverton WY |
| Description: |
* WHAT...Additional snow accumulations up to 3 inches. Winds gusting as high as 60 mph. * WHERE...Upper Green River Basin Foothills. * WHEN...Until 5 AM MST Saturday. * IMPACTS...Travel could be difficult. |
| Alert: | High Wind Warning |
| Area(s): | Green Mountains and Rattlesnake Range; Natrona County Lower Elevations; Casper Mountain |
| Effective: | 2025-12-19 @ 5:47 pm -> 2025-12-20 @ 12:00 am |
| Onset: | 2025-12-19 @ 5:47 pm -> 2025-12-20 @ 12:00 am |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Riverton WY on 2025-12-19 @ 5:47 pm |
| Headline: | High Wind Warning issued December 19 at 4:47PM MST until December 19 at 11:00PM MST by NWS Riverton WY |
| Description: |
* WHAT...Southwest winds 35 to 45 mph with gusts up to 70 mph. * WHERE...Casper Mountain, Green Mountains and Rattlesnake Range, and Natrona County Lower Elevations. * WHEN...Until 11 PM MST this evening. * IMPACTS...Damaging winds may blow down trees and power lines. Travel could be difficult, especially for high profile vehicles. * ADDITIONAL DETAILS...Localized stronger winds up to 80 mph are possible for wind prone locations, like Outer Drive in southern Casper. |
| Alert: | High Wind Warning |
| Area(s): | Central Laramie Range and Southwest Platte County; South Laramie Range Foothills |
| Effective: | 2025-12-19 @ 5:33 pm -> 2025-12-20 @ 6:00 am |
| Onset: | 2025-12-19 @ 5:33 pm -> 2025-12-20 @ 6:00 am |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Cheyenne WY on 2025-12-19 @ 5:33 pm |
| Headline: | High Wind Warning issued December 19 at 4:33PM MST until December 20 at 5:00AM MST by NWS Cheyenne WY |
| Description: |
* WHAT...West winds 35 to 55 mph with gusts up to 90 mph expected. * WHERE...Bordeaux area along Interstate 25 between Chugwater and Wheatland, and South Laramie Range Foothills. * WHEN...Until 5 AM MST Saturday. * IMPACTS...Mainly to transportation. Strong cross winds will be hazardous to light weight or high profile vehicles, including campers and tractor trailers. * ADDITIONAL DETAILS...Wildfires will have the potential to spread rapidly in these conditions. |
| Alert: | High Wind Warning |
| Area(s): | Converse County Lower Elevations; East Platte County; Central Laramie County |
| Effective: | 2025-12-19 @ 5:33 pm -> 2025-12-20 @ 6:00 am |
| Onset: | 2025-12-19 @ 5:33 pm -> 2025-12-20 @ 6:00 am |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Cheyenne WY on 2025-12-19 @ 5:33 pm |
| Headline: | High Wind Warning issued December 19 at 4:33PM MST until December 20 at 5:00AM MST by NWS Cheyenne WY |
| Description: |
* WHAT...West winds 30 to 40 mph with gusts up to 65 mph. * WHERE...Converse County Lower Elevations, Central Laramie County, and East Platte County. * WHEN...Until 5 AM MST Saturday. * IMPACTS...Mainly to transportation. Strong cross winds will be hazardous to light weight or high profile vehicles, including campers and tractor trailers. |
| Alert: | High Wind Warning |
| Area(s): | Shirley Basin; Central Carbon County; Upper North Platte River Basin; Laramie Valley |
| Effective: | 2025-12-19 @ 5:33 pm -> 2025-12-20 @ 6:00 am |
| Onset: | 2025-12-19 @ 5:33 pm -> 2025-12-20 @ 6:00 am |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Cheyenne WY on 2025-12-19 @ 5:33 pm |
| Headline: | High Wind Warning issued December 19 at 4:33PM MST until December 20 at 5:00AM MST by NWS Cheyenne WY |
| Description: |
* WHAT...West winds 35 to 45 mph with gusts up to 75 mph. * WHERE...Central Carbon County, Shirley Basin, Upper North Platte River Basin, and Laramie Valley. * WHEN...Until 5 AM MST Saturday. * IMPACTS...Mainly to transportation. Strong cross winds will be hazardous to light weight or high profile vehicles, including campers and tractor trailers. * ADDITIONAL DETAILS...Wildfires will have the potential to spread rapidly in these conditions. |
| Alert: | High Wind Warning |
| Area(s): | North Laramie Range |
| Effective: | 2025-12-19 @ 5:33 pm -> 2025-12-20 @ 6:00 am |
| Onset: | 2025-12-19 @ 5:33 pm -> 2025-12-20 @ 6:00 am |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Cheyenne WY on 2025-12-19 @ 5:33 pm |
| Headline: | High Wind Warning issued December 19 at 4:33PM MST until December 20 at 5:00AM MST by NWS Cheyenne WY |
| Description: |
* WHAT...West winds 40 to 60 mph with gusts up to 95 mph. * WHERE...North Laramie Range. * WHEN...Until 5 AM MST Saturday. * IMPACTS...Mainly to transportation. Strong cross winds will be hazardous to light weight or high profile vehicles, including campers and tractor trailers. * ADDITIONAL DETAILS...Wildfires will have the potential to spread rapidly in these conditions. |
| Alert: | High Wind Warning |
| Area(s): | Niobrara County; Goshen County; East Laramie County |
| Effective: | 2025-12-19 @ 5:33 pm -> 2025-12-20 @ 12:00 am |
| Onset: | 2025-12-19 @ 5:33 pm -> 2025-12-20 @ 12:00 am |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Cheyenne WY on 2025-12-19 @ 5:33 pm |
| Headline: | High Wind Warning issued December 19 at 4:33PM MST until December 19 at 11:00PM MST by NWS Cheyenne WY |
| Description: |
* WHAT...West winds 35 to 45 mph with gusts up to 70 mph. * WHERE...Niobrara County, East Laramie County, and Goshen County. * WHEN...Until 11 PM MST this evening. * IMPACTS...Mainly to transportation. Strong cross winds will be hazardous to light weight or high profile vehicles, including campers and tractor trailers. * ADDITIONAL DETAILS...Wildfires will have the potential to spread rapidly in these conditions. |
| Alert: | High Wind Warning |
| Area(s): | Ferris/Seminoe/Shirley Mountains |
| Effective: | 2025-12-19 @ 5:33 pm -> 2025-12-20 @ 12:00 pm |
| Onset: | 2025-12-19 @ 5:33 pm -> 2025-12-20 @ 6:00 am |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Cheyenne WY on 2025-12-19 @ 5:33 pm |
| Headline: | High Wind Warning issued December 19 at 4:33PM MST until December 20 at 11:00AM MST by NWS Cheyenne WY |
| Description: |
* WHAT...Southwest winds 35 to 45 mph with gusts up to 75 mph possible. * WHERE...Ferris/Seminoe/Shirley Mountains. * WHEN...Until 11 AM MST Saturday. * IMPACTS...Mainly to transportation. Strong cross winds will be hazardous to light weight or high profile vehicles, including campers and tractor trailers. * ADDITIONAL DETAILS...Wildfires will have the potential to spread rapidly in these conditions. |
| Alert: | High Wind Warning |
| Area(s): | North Snowy Range Foothills; South Laramie Range |
| Effective: | 2025-12-19 @ 5:33 pm -> 2025-12-20 @ 12:00 pm |
| Onset: | 2025-12-19 @ 5:33 pm -> 2025-12-20 @ 6:00 am |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Cheyenne WY on 2025-12-19 @ 5:33 pm |
| Headline: | High Wind Warning issued December 19 at 4:33PM MST until December 20 at 11:00AM MST by NWS Cheyenne WY |
| Description: |
* WHAT...West winds 30 to 50 mph with gusts up to 80 mph. * WHERE...South Laramie Range including the Interstate 80 Summit between Cheyenne and Laramie, and North Snowy Range Foothills including Arlington and Elk Mountain along Interstate 80. * WHEN...Until 11 AM MST Saturday. * IMPACTS...Mainly to transportation. Strong cross winds will be hazardous to light weight or high profile vehicles, including campers and tractor trailers. * ADDITIONAL DETAILS...Wildfires will have the potential to spread rapidly in these conditions. |
| Alert: | Winter Weather Advisory |
| Area(s): | Southern Big Horn; Sheridan Foothills |
| Effective: | 2025-12-19 @ 4:36 pm -> 2025-12-20 @ 1:00 am |
| Onset: | 2025-12-19 @ 6:00 pm -> 2025-12-20 @ 1:00 am |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Billings MT on 2025-12-19 @ 4:36 pm |
| Headline: | Winter Weather Advisory issued December 19 at 3:36PM MST until December 20 at 12:00AM MST by NWS Billings MT |
| Description: |
* WHAT...Snow. Total snow accumulations of 1 to 3 inches, greatest near the mountains and over the higher hills. Winds gusting as high as 35 mph. * WHERE...In Montana, Southern Big Horn. In Wyoming, Sheridan Foothills. * WHEN...Until midnight MST tonight. * IMPACTS...Plan on slippery road conditions. Blowing snow could reduce visibility. The hazardous conditions will impact this evening's commute. * ADDITIONAL DETAILS...Precipitation may start as rain, before quickly transitioning to snow. |
| Alert: | Red Flag Warning |
| Area(s): | Pine Ridge/Nebraska National Forest; Box Butte/South Sioux/Niobrara River; Lower North Platte River Basin/Scottsbluff National Monument; Lodgepole Creek/Southern Nebraska Panhandle; Niobrara/Lower Elevations of Converse/Thunder Basin National Grassland; Middle North Platte River Basin/Niobrara and Converse High Plains; Bordeaux/Chugwater/Wheatland; Goshen/Middle-Lower North Platte River Basin |
| Effective: | 2025-12-19 @ 2:45 pm -> 2025-12-20 @ 1:00 am |
| Onset: | 2025-12-19 @ 2:45 pm -> 2025-12-20 @ 1:00 am |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Cheyenne WY on 2025-12-19 @ 2:45 pm |
| Headline: | Red Flag Warning issued December 19 at 1:45PM MST until December 20 at 12:00AM MST by NWS Cheyenne WY |
| Description: |
...A PARTICULARLY DANGEROUS SITUATION FOR THE FOOTHILLS OF AND IMMEDIATELY ADJACENT OF THE SOUTHERN LARAMIE RANGE THROUGH LARAMIE COUNTY IS EXPECTED ON FRIDAY... A strong wind event is ongoing, sustained winds of 40 to 55 mph and gusts of 60 to 75+ mph, alongside dry conditions and low humidity is creating an extreme environment conducive of significant and rapid wildfire spread. These conditions will continue into the early evening hours before improving later tonight. These conditions will remain for elevations below 8000 feet along the southern Laramie Range and eastwards through most of Laramie County. * AFFECTED AREA...Fire weather zones 417, 418, 432, 433, 434, 435, 436, and 437. * WIND...Sustained winds 30 to 50 mph with gusts in excess of 55 to 70 mph. * HUMIDITY...RH values as low as 15 to 30%. * IMPACTS...Any fires that develop will likely spread rapidly. Outdoor burning is not recommended. Although conditions will be borderline in some zones, a lack of significant precipitation combined with the very high winds in the region will create a critical fire weather environment. |
| Alert: | Red Flag Warning |
| Area(s): | Southern Laramie Range; Laramie Foothills and High Plains; Laramie East High Plains |
| Effective: | 2025-12-19 @ 2:45 pm -> 2025-12-20 @ 1:00 am |
| Onset: | 2025-12-19 @ 2:45 pm -> 2025-12-20 @ 1:00 am |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Cheyenne WY on 2025-12-19 @ 2:45 pm |
| Headline: | Red Flag Warning issued December 19 at 1:45PM MST until December 20 at 12:00AM MST by NWS Cheyenne WY |
| Description: |
...A PARTICULARLY DANGEROUS SITUATION FOR THE FOOTHILLS OF AND IMMEDIATELY ADJACENT OF THE SOUTHERN LARAMIE RANGE THROUGH LARAMIE COUNTY IS EXPECTED ON FRIDAY... A strong wind event is ongoing, sustained winds of 40 to 55 mph and gusts of 60 to 75+ mph, alongside dry conditions and low humidity is creating an extreme environment conducive of significant and rapid wildfire spread. These conditions will continue into the early evening hours before improving later tonight. These conditions will remain for elevations below 8000 feet along the southern Laramie Range and eastwards through most of Laramie County. * THIS IS A PARTICULARLY DANGEROUS SITUATION FOR THE FOOTHILLS AND MID ELEVATIONS OF THE SOUTHERN LARAMIE RANGE. * AFFECTED AREA...Fire weather zone 429. * WIND...Sustained winds 40 to 55 mph with gusts in excess of 60 to 75 mph. * HUMIDITY...RH values as low as 15 to 25%. * IMPACTS...Conditions will be favorable for very rapid fire spread. Avoid outdoor burning and any activity that may produce a spark and start a wildfire. |
| Alert: | Winter Weather Advisory |
| Area(s): | Sierra Madre Range; Snowy Range |
| Effective: | 2025-12-19 @ 2:12 pm -> 2025-12-20 @ 9:00 pm |
| Onset: | 2025-12-19 @ 9:00 pm -> 2025-12-20 @ 6:00 am |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Cheyenne WY on 2025-12-19 @ 2:12 pm |
| Headline: | Winter Weather Advisory issued December 19 at 1:12PM MST until December 20 at 8:00PM MST by NWS Cheyenne WY |
| Description: |
* WHAT...Snow expected. Total snow accumulations between 6 and 10 inches. Winds gusting as high as 60 mph. * WHERE...Sierra Madre Range and Snowy Range. * WHEN...From 8 PM this evening to 8 PM MST Saturday. * IMPACTS...Travel could be very difficult. Very strong winds could cause extensive tree damage. |
| Alert: | High Wind Warning |
| Area(s): | Southwest Wyoming |
| Effective: | 2025-12-19 @ 10:38 am -> 2025-12-20 @ 1:00 am |
| Onset: | 2025-12-19 @ 10:38 am -> 2025-12-20 @ 1:00 am |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Salt Lake City UT on 2025-12-19 @ 10:38 am |
| Headline: | High Wind Warning issued December 19 at 9:38AM MST until December 20 at 12:00AM MST by NWS Salt Lake City UT |
| Description: |
* WHAT...Southwest winds 25 to 35 mph with gusts up to 65 mph. * WHERE...Southwest Wyoming. * WHEN...Until midnight MST tonight. * IMPACTS...High winds may move loose debris, damage property and cause power outages. Travel could be difficult, especially for high profile vehicles and vehicles with trailers. |