Cheyenne, Wyoming
Regional Weather Alerts
| Alert: | Red Flag Warning |
| Area(s): | Central Black Hills; Southern Black Hills; Fall River County Area; Eastern Foot Hills; Custer County Plains; Pine Ridge Area; West Central Plains; Badlands Area; Southern Campbell; Weston County Plains |
| Effective: | 2026-04-12 @ 1:12 pm -> 2026-04-13 @ 10:00 pm |
| Onset: | 2026-04-12 @ 1:12 pm -> 2026-04-13 @ 4:15 am |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Rapid City SD on 2026-04-12 @ 1:12 pm |
| Headline: | Red Flag Warning issued April 12 at 12:12PM MDT until April 13 at 9:00PM MDT by NWS Rapid City SD |
| Description: |
...CRITICAL FIRE WEATHER CONDITIONS THROUGH MONDAY ACROSS PORTIONS OF NORTHEASTERN WYOMING AND WESTERN SOUTH DAKOTA... .Warm, very dry, and breezy weather will support critical fire weather conditions over portions of northeastern Wyoming and western South Dakota this afternoon and again Monday afternoon. * AFFECTED AREA...Fire Weather Zones 315 Southern Campbell, 317 Weston County Plains, 320 Central Black Hills, 321 Southern Black Hills, 322 Fall River County Area, 324 Eastern Foot Hills, 325 Custer County Plains, 326 Pine Ridge Area, 329 West Central Plains and 332 Badlands Area. * WINDS...For today, west 10 to 20 mph with gusts up to 30 mph. For Monday, west 20 to 30 mph with gusts up to 45 mph. * RELATIVE HUMIDITY...As low as 10 percent. * IMPACTS...The combination of gusty winds and low relative humidity will produce critical fire weather conditions. |
| Alert: | Red Flag Warning |
| Area(s): | Natrona County/Casper BLM |
| Effective: | 2026-04-12 @ 12:30 pm -> 2026-04-12 @ 9:00 pm |
| Onset: | 2026-04-12 @ 1:00 pm -> 2026-04-12 @ 9:00 pm |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Riverton WY on 2026-04-12 @ 12:30 pm |
| Headline: | Red Flag Warning issued April 12 at 11:30AM MDT until April 12 at 8:00PM MDT by NWS Riverton WY |
| Description: |
The National Weather Service in Riverton has issued a Red Flag Warning, which is in effect until 8 PM MDT this evening. * IMPACTS: Low Humidities...Unseasonably Warm Temperatures...and Strong Gusty Winds could cause erratic fire behavior. * AFFECTED AREA: In Central WY...Fire Weather Zone 280. * COUNTIES AFFECTED: In Central WY...Natrona. * WIND: Southwest 15 to 25 mph with gusts up to 40 mph. * HUMIDITY: As low as 13 percent. * TEMPERATURES: Highs in the upper 60s. |
| 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; North Laramie Range and Adjacent High Plains; Laramie Foothills and High Plains; Laramie East High Plains; Bordeaux/Chugwater/Wheatland; Goshen/Middle-Lower North Platte River Basin |
| Effective: | 2026-04-12 @ 12:29 pm -> 2026-04-13 @ 9:00 pm |
| Onset: | 2026-04-12 @ 1:00 pm -> 2026-04-13 @ 7:00 am |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Cheyenne WY on 2026-04-12 @ 12:29 pm |
| Headline: | Red Flag Warning issued April 12 at 11:29AM MDT until April 13 at 8:00PM MDT by NWS Cheyenne WY |
| Description: |
* WIND...West to southwest 15 to 20 mph. Gusts 25 to 35 mph. * HUMIDITY...8 to 12 percent. * IMPACTS...Any fires that develop will likely spread rapidly. Outdoor burning is not recommended. * ADDITIONAL DETAILS...Poor humidity recoveries are expected Sunday night. |
| Alert: | High Wind Watch |
| Area(s): | North Snowy Range Foothills; South Laramie Range |
| Effective: | 2026-04-12 @ 12:28 pm -> 2026-04-13 @ 4:00 pm |
| Onset: | 2026-04-13 @ 1:00 am -> 2026-04-13 @ 7:00 am |
| Severity: | Severe |
| Certainty: | Possible |
| Urgency: | Future |
| Issued By: | NWS Cheyenne WY on 2026-04-12 @ 12:28 pm |
| Headline: | High Wind Watch issued April 12 at 11:28AM MDT until April 13 at 3:00PM MDT by NWS Cheyenne WY |
| Description: |
* WHAT...West winds 20 to 30 mph with gusts up to 60 mph possible. * 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...From late tonight through Monday afternoon. * IMPACTS...Mainly to transportation. Strong cross winds will be hazardous to light weight or high profile vehicles, including campers and tractor trailers. |