Cheyenne, Wyoming
Regional Weather Alerts
| Alert: | Special Weather Statement |
| Area(s): | South Laramie Range Foothills; Central Laramie County; East Laramie County |
| Effective: | 2026-09-02 @ 5:58 pm -> 2026-09-02 @ 6:30 pm |
| Onset: | 2026-09-02 @ 5:58 pm |
| Severity: | Moderate |
| Certainty: | Observed |
| Urgency: | Expected |
| Issued By: | NWS Cheyenne WY on 2026-09-02 @ 5:58 pm |
| Headline: | Special Weather Statement issued September 2 at 4:58PM MDT by NWS Cheyenne WY |
| Description: |
At 458 PM MDT, Doppler radar was tracking a strong thunderstorm over Winchester Hills, which is near Cheyenne, moving northeast at 50 mph. HAZARD...Wind gusts of 50 to 55 mph. SOURCE...Radar indicated. IMPACT...Gusty winds could knock down tree limbs and blow around unsecured objects. This strong thunderstorm will be near... Cheyenne, South Greeley Highway, Ranchettes, Fox Farm-College, Laramie County Fairgrounds at Archer, and Cheyenne Regional Airport around 505 PM MDT. |
| Alert: | Special Weather Statement |
| Area(s): | Central Carbon County; North Snowy Range Foothills; Southwest Carbon County; Sierra Madre Range; Upper North Platte River Basin; Snowy Range |
| Effective: | 2026-09-02 @ 3:29 pm -> 2026-09-02 @ 10:00 pm |
| Onset: | 2026-09-02 @ 3:29 pm |
| Severity: | Moderate |
| Certainty: | Observed |
| Urgency: | Expected |
| Issued By: | NWS Cheyenne WY on 2026-09-02 @ 3:29 pm |
| Headline: | Special Weather Statement issued September 2 at 2:29PM MDT by NWS Cheyenne WY |
| Description: |
Showers and thunderstorms could create sudden, gusty winds along Interstate 80 this afternoon and evening. Wind gusts up to 60 mph will be possible in and around these showers. Use caution if traveling and keep both hands on the wheel, especially if in lightweight and/or high profile vehicles. |
| Alert: | Red Flag Warning |
| Area(s): | Northern Campbell; Southern Campbell; Weston County Plains |
| Effective: | 2026-09-02 @ 1:22 pm -> 2026-09-03 @ 1:30 am |
| Onset: | 2026-09-03 @ 1:00 pm -> 2026-09-03 @ 9:00 pm |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Rapid City SD on 2026-09-02 @ 1:22 pm |
| Headline: | Red Flag Warning issued September 2 at 12:22PM MDT until September 3 at 8:00PM MDT by NWS Rapid City SD |
| Description: |
...RED FLAG WARNING IN EFFECT FROM NOON TO 8 PM MDT THURSDAY DUE TO GUSTY WINDS AND LOW RELATIVE HUMIDITY FOR NORTHERN CAMPBELL, SOUTHERN CAMPBELL, AND WESTON COUNTY PLAINS... The National Weather Service in Rapid City SD has issued a Red Flag Warning. * AFFECTED AREA...Fire Weather Zones 314, 315, and 317. * TIMING...From noon to 8 PM MDT Thursday. * WINDS...Southwest winds 10 to 20 mph with gusts up to 30 mph. * RELATIVE HUMIDITY...Relative Humidity of 15 percent or less. * IMPACTS...Any fires that develop will spread rapidly. Outdoor burning is not recommended. |
| Alert: | Red Flag Warning |
| Area(s): | Crow Indian Reservation/Big Horn Canyon Rec Area; Bighorn National Forest |
| Effective: | 2026-09-02 @ 1:10 pm -> 2026-09-03 @ 1:15 pm |
| Onset: | 2026-09-03 @ 1:00 pm -> 2026-09-03 @ 10:00 pm |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Billings MT on 2026-09-02 @ 1:10 pm |
| Headline: | Red Flag Warning issued September 2 at 12:10PM MDT until September 3 at 9:00PM MDT by NWS Billings MT |
| Description: |
The National Weather Service in Billings has issued a Red Flag Warning...which is in effect from noon to 9 PM MDT Thursday. * IMPACTS: Low humidities and strong gusty winds will create erratic fire behavior. * AFFECTED AREA: In North Central WY Fire Zone...284. In South Central MT Fire Zone...129. * COUNTIES AFFECTED: In North Central WY...Big Horn...Johnson...Sheridan...Washakie. In South Central MT...Big Horn...Carbon...Yellowstone. * WIND: South 10 to 15 mph with gusts up to 35 mph. * HUMIDITY: As low as 12 percent. * ADDITIONAL DETAILS: The strongest winds, and area of greatest concern, in MTZ129 are forecast in the western portion of the zone. |
| Alert: | Red Flag Warning |
| Area(s): | Niobrara/Lower Elevations of Converse/Thunder Basin National Grassland; Middle North Platte River Basin/Niobrara and Converse High Plains |
| Effective: | 2026-09-02 @ 1:09 pm -> 2026-09-03 @ 8:00 am |
| Onset: | 2026-09-03 @ 1:00 pm -> 2026-09-03 @ 8:00 pm |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Cheyenne WY on 2026-09-02 @ 1:09 pm |
| Headline: | Red Flag Warning issued September 2 at 12:09PM MDT until September 3 at 7:00PM MDT by NWS Cheyenne WY |
| Description: |
The National Weather Service in Cheyenne has issued a Red Flag Warning, which is in effect from noon to 7 PM MDT Thursday. * AFFECTED AREA...Fire weather zone 417.Fire weather zone 418. * WIND...Southwest at 15 to 25 mph with gusts up to 35 mph. * HUMIDITY...Between 10 and 15 percent. * IMPACTS...any fires that develop will likely spread rapidly. Outdoor burning is not recommended. |
| Alert: | Red Flag Warning |
| Area(s): | North Bighorn Basin/Worland BLM; Cody Foothills; Lincoln and Uinta Counties/Lower Elevations; Upper Green River Basin/Rock Springs BLM; Sweetwater County/Rock Springs BLM/Flaming Gorge NRA; Natrona County/Casper BLM; Johnson County/Casper BLM; South Bighorn Basin/Worland BLM; Upper Wind River Basin/Wind River Basin; South Bighorn Mountains; Absaroka Mountains/North Shoshone NF; Owl Creek Mountains; East Wind River Mountains/South Shoshone NF; Granite/Green/Ferris/Rattlesnake Mountains; Casper Mountain |
| Effective: | 2026-09-02 @ 10:22 am -> 2026-09-03 @ 8:00 am |
| Onset: | 2026-09-03 @ 1:00 pm -> 2026-09-03 @ 10:00 pm |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Riverton WY on 2026-09-02 @ 10:22 am |
| Headline: | Red Flag Warning issued September 2 at 9:22AM MDT until September 3 at 9:00PM MDT by NWS Riverton WY |
| Description: |
The National Weather Service in Riverton has issued a Red Flag Warning, which is in effect from noon to 9 PM MDT Thursday. * IMPACTS: Low Humidities...Unseasonably Warm Temperatures...and Strong Gusty Winds could cause erratic fire behavior. * AFFECTED AREA: In Central WY Fire Zones...280...283...285...288...289...300. In North Central WY Fire Zones...275...276...281...282...287. In Northwest WY Fire Zone....286. In Southwest WY Fire Zones...277...279. In West Central WY Fire Zone....278. * COUNTIES AFFECTED: In Central WY...Fremont...Natrona. In North Central WY...Big Horn...Hot Springs...Johnson...Park Washakie. In Southwest WY...Sweetwater...Uinta. In West Central WY...Lincoln...Sublette. * WIND: Southwest 20 to 30 mph with gusts up to 35 to 45 mph. * HUMIDITY: As low as 10 to 15 percent. * TEMPERATURES: Highs in the 70s west of the Divide and the mountains, in the 80s to near 90 in the lower basins east of the Divide. |