Cheyenne, Wyoming
Regional Weather Alerts
| Alert: | Evacuation - Immediate |
| Area(s): | Fremont, WY |
| Effective: | 2026-08-09 @ 9:25 pm -> 2026-08-10 @ 1:00 pm |
| Onset: | 2026-08-09 @ 9:25 pm |
| Severity: | Unknown |
| Certainty: | Unknown |
| Urgency: | Unknown |
| Issued By: | NWS Riverton WY on 2026-08-09 @ 9:25 pm |
| Headline: | Evacuation - Immediate issued August 9 at 8:25PM MDT by NWS Riverton WY |
| Description: |
EVIRIW The following message is transmitted at the request of the Fremont County Emergency Management. Due to a wildfire near Johnny Lee's Corner, an Immediate Evacuation is required for the following areas: Areas east of highway 28 and the entire Twin Creek Drainage south of highway 287 must evacuate immediately due to wildfire threat. Go to Fremont County Facebook page or County 10 News for updates. GO NOW! The following message is transmitted at the request of the Wyoming Office of Homeland Security. |
| Alert: | Air Quality Alert |
| Area(s): | Yellowstone National Park; Absaroka Mountains; Cody Foothills; North Bighorn Basin; Southwest Bighorn Basin; Southeast Bighorn Basin; Owl Creek and Bridger Mountains; Bighorn Mountains West; Bighorn Mountains Southeast; Northeast Johnson County; Southeast Johnson County; Teton and Gros Ventre Mountains; Jackson Hole; Wind River Mountains West; Wind River Mountains East; Upper Wind River Basin; Wind River Basin; Lander Foothills; Green Mountains and Rattlesnake Range; Natrona County Lower Elevations; Casper Mountain; Star Valley; Salt River and Wyoming Ranges; Upper Green River Basin Foothills; Upper Green River Basin; South Lincoln County; Rock Springs and Green River; Flaming Gorge; East Sweetwater County |
| Effective: | 2026-08-08 @ 12:39 pm -> 2026-08-10 @ 1:00 pm |
| Onset: | 2026-08-08 @ 12:39 pm |
| Severity: | Unknown |
| Certainty: | Unknown |
| Urgency: | Unknown |
| Issued By: | NWS Riverton WY on 2026-08-08 @ 12:39 pm |
| Headline: | Air Quality Alert issued August 8 at 11:39AM MDT by NWS Riverton WY |
| Description: |
The following message is transmitted on behalf of the Wyoming Department of Environmental Quality, Air Quality Division, and the Wyoming Department of Health. * WHAT...Air Quality Alert for Wildfire Smoke. * WHERE...All of Western and Central Wyoming * WHEN...Now through Noon Monday. * IMPACTS...Smoke from western United States wildfires continues to be observed across much of western and central Wyoming. The smoke is limiting visibilities at times. HEALTH INFORMATION...The Wyoming Department of Health recommends that the elderly, young children, and individuals with respiratory problems avoid excessive physical exertion and minimize outdoor activities during this time. Wildfire smoke is made up of a variety of pollutants, including particulate matter and ozone, which can cause respiratory health effects. Although these people are most susceptible to health impacts, the Department of Health also advises that everyone should avoid prolonged exposure to poor air quality conditions. CURRENT CONDITIONS...The Wyoming Department of Environmental Quality, Air Quality Division offers near real-time air quality data for Wyoming's monitoring stations and health effects information to help the public interpret current conditions. Current air quality conditions across the state of Wyoming can be found at http://www.wyvisnet.com/. |
| Alert: | Air Quality Alert |
| Area(s): | Northeast Bighorn Mountains; Sheridan Foothills |
| Effective: | 2026-08-07 @ 12:03 pm -> 2026-08-10 @ 1:00 pm |
| Onset: | 2026-08-07 @ 12:03 pm |
| Severity: | Unknown |
| Certainty: | Unknown |
| Urgency: | Unknown |
| Issued By: | NWS Billings MT on 2026-08-07 @ 12:03 pm |
| Headline: | Air Quality Alert issued August 7 at 11:03AM MDT by NWS Billings MT |
| Description: |
The following message is transmitted on behalf of the Wyoming Department of Environmental Quality, Air Quality Division and the Wyoming Department of Health. WHAT...Air Quality Alert for Wildfire Smoke. WHERE...Sheridan County, Wyoming. WHEN...Through noon Monday. IMPACTS...Heavy smoke from regional wildfires will continue to reduce air quality. HEALTH INFORMATION...The Wyoming Department of Health recommends the elderly, young children, and individuals with respiratory problems avoid excessive physical exertion and minimize outdoor activities during this time. Wildfire smoke is made up of a variety of pollutants, including particulate matter and ozone, which can cause respiratory health effects. Although these people are most susceptible to health impacts, the Department of Health also advises that everyone should avoid prolonged exposure to poor air quality conditions. CURRENT CONDITIONS...The Wyoming Department of Environmental Quality, Air Quality Division offers near real-time air quality data for Wyoming's monitoring stations and health effects information to help the public interpret current conditions. Current air quality conditions across the state of Wyoming can be found at http://www.wyvisnet.com/ |
| Alert: | Air Quality Alert |
| Area(s): | Southwest Wyoming |
| Effective: | 2026-08-07 @ 11:51 am -> 2026-08-10 @ 1:00 pm |
| Onset: | 2026-08-07 @ 11:51 am |
| Severity: | Unknown |
| Certainty: | Unknown |
| Urgency: | Unknown |
| Issued By: | NWS Salt Lake City UT on 2026-08-07 @ 11:51 am |
| Headline: | Air Quality Alert issued August 7 at 10:51AM MDT by NWS Salt Lake City UT |
| Description: |
The following is transmitted in collaboration with the Wyoming Department of Environmental Quality, Air Quality Division and the Wyoming Department of Health until noon MDT Monday. * WHAT...Air Quality Alert for Wildfire Smoke. * WHERE...Uinta County in southwest Wyoming. * WHEN...Noon MDT Friday through Noon MDT Monday * IMPACTS...Heavy smoke from the northwestern United States has been observed across southwest Wyoming. HEALTH INFORMATION...The Wyoming Department of Health recommends the elderly, young children, and individuals with respiratory problems avoid excessive physical exertion and minimize outdoor activities during this time. Wildfire smoke is made up of a variety of pollutants, including particulate matter and ozone, which can cause respiratory health effects. Although these people are most susceptible to health impacts, the Department of Health also advises that everyone should avoid prolonged exposure to poor air quality conditions. CURRENT CONDITIONS...The Wyoming Department of Environmental Quality, Air Quality Division offers near real-time air quality data for Wyoming's monitoring stations and provides health effects information to help the public interpret current conditions. Current air quality conditions across the state of Wyoming can be found at http://www.wyvisnet.com/ |
| Alert: | Air Quality Alert |
| Area(s): | Northern Campbell; Southern Campbell; Western Crook; Wyoming Black Hills; Weston County Plains; Newcastle; Northeastern Crook |
| Effective: | 2026-08-07 @ 11:46 am -> 2026-08-10 @ 1:00 pm |
| Onset: | 2026-08-07 @ 11:46 am |
| Severity: | Unknown |
| Certainty: | Unknown |
| Urgency: | Unknown |
| Issued By: | NWS Rapid City SD on 2026-08-07 @ 11:46 am |
| Headline: | Air Quality Alert issued August 7 at 10:46AM MDT by NWS Rapid City SD |
| Description: |
The following message is transmitted in collaboration with the Wyoming Department of Environmental Quality, Air Quality Division, and the Wyoming Department of Health. * WHAT...Air Quality Alert for Wildfire Smoke. * WHERE...Northeast Wyoming. * WHEN...Through Noon MDT Monday. * IMPACTS...Poor air quality due to wildfire smoke. |