Cheyenne, Wyoming
Regional Weather Alerts
| Alert: | Red Flag Warning |
| Area(s): | Northern Black Hills; Central Black Hills; Southern Black Hills; Fall River County Area; Northern Foot Hills; Eastern Foot Hills; Custer County Plains; Pine Ridge Area; Butte County Area; West Central Plains; Haakon County Area; Badlands Area; Bennett County Area; Northern Campbell; Southern Campbell; Crook County Plains; Weston County Plains; Wyoming Black Hills |
| Effective: | 2026-03-19 @ 10:57 pm -> 2026-03-20 @ 10:00 pm |
| Onset: | 2026-03-20 @ 11:00 am -> 2026-03-20 @ 2:00 pm |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Rapid City SD on 2026-03-19 @ 10:57 pm |
| Headline: | Red Flag Warning issued March 19 at 9:57PM MDT until March 20 at 9:00PM MDT by NWS Rapid City SD |
| Description: |
...CRITICAL FIRE WEATHER CONDITIONS FRIDAY ACROSS PORTIONS OF NORTHEASTERN WYOMING AND WESTERN SOUTH DAKOTA... .Well above average temperatures again Friday with a very dry airmass in place. Poor overnight humidity recovery tonight, especially across the Black Hills. Daytime minimum relative humidity Friday will be around 10 percent across the southwestern portion of the warned area with 15 to 20 percent across the northern portion. Winds will be strongest across the northwestern South Dakota plains where gusts up to 30 mph are likely. Elsewhere, ample mixing (mixing heights in excess of 10k feet.) will support gusts to 25 mph, although confidence in critical winds from Pine Ridge to Martin is lower. The National Weather Service in Rapid City has issued a Red Flag Warning for gusty winds and low relative humidity, which is in effect from 10 AM to 9 PM MDT Friday. * AFFECTED AREA...Fire Weather Zones 314 Northern Campbell, 315 Southern Campbell, 316 Crook County Plains, 317 Weston County Plains, 318 Wyoming Black Hills, 319 Northern Black Hills, 320 Central Black Hills, 321 Southern Black Hills, 322 Fall River County Area, 323 Northern Foot Hills, 324 Eastern Foot Hills, 325 Custer County Plains, 326 Pine Ridge Area, 327 Butte County Area, 329 West Central Plains, 331 Haakon County Area, 332 Badlands Area and 333 Bennett County Area. * WINDS...West 10 to 20 mph with gusts up to 30 mph. * RELATIVE HUMIDITY...As low as 10 percent. * IMPACTS...The combination of gusty winds and low relative humidity would produce critical fire weather conditions. |
| 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: | 2026-03-19 @ 4:35 pm -> 2026-03-21 @ 9:00 pm |
| Onset: | 2026-03-19 @ 4:35 pm -> 2026-03-20 @ 7:00 am |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Cheyenne WY on 2026-03-19 @ 4:35 pm |
| Headline: | Red Flag Warning issued March 19 at 3:35PM MDT until March 21 at 8:00PM MDT by NWS Cheyenne WY |
| Description: |
...Multi Day Red Flag Warning... .Critical fire conditions are expected through the week, with poor overnight humidity recoveries and no precipitation. * AFFECTED AREA...Fire weather zone 417, 418, 419, 430, 431, 432, 433, 434, 435, 436, and 437. * WIND...Sustained winds 20 to 30 mph, gusting up to 35 mph. * HUMIDITY...7 to 12 percent. * IMPACTS...Any fires that develop will likely spread rapidly. Outdoor burning is not recommended. * ADDITIONAL DETAILS...Poor overnight humidity recoveries are expected for the duration of the Red Flag Warning. Well above average temperatures are also expected which will contribute considerably to the dry conditions. |
| Alert: | Red Flag Warning |
| Area(s): | North Laramie Valley/Shirley Basin; Ferris/Seminoe/Shirley Mountains; Central and West Carbon; Southwest Carbon County; Upper North Platte River Basin; North Snowy Range Foothills; Southern Laramie Valley; Southern Laramie Range |
| Effective: | 2026-03-19 @ 4:35 pm -> 2026-03-21 @ 9:00 pm |
| Onset: | 2026-03-19 @ 4:35 pm -> 2026-03-20 @ 7:00 am |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Cheyenne WY on 2026-03-19 @ 4:35 pm |
| Headline: | Red Flag Warning issued March 19 at 3:35PM MDT until March 21 at 8:00PM MDT by NWS Cheyenne WY |
| Description: |
...Multi Day Red Flag Warning... .Critical fire conditions are expected through the week, with poor overnight humidity recoveries and no precipitation. * AFFECTED AREA...Fire weather zone 420, 421, 422, 423, 425, 427,428 and 429. * WIND...Sustained winds 20 to 30 mph, gusting up to 40 mph. * HUMIDITY...9 to 12 percent. * IMPACTS...Any fires that develop will likely spread rapidly. Outdoor burning is not recommended. * ADDITIONAL DETAILS...Poor overnight humidity recoveries are expected for the duration of the Red Flag Warning. Well above average temperatures are also expected which will contribute considerably to the dry conditions. |
| Alert: | Red Flag Warning |
| Area(s): | Lincoln and Uinta Counties/Lower Elevations; Upper Green River Basin/Rock Springs BLM; Sweetwater County/Rock Springs BLM/Flaming Gorge NRA |
| Effective: | 2026-03-19 @ 1:55 pm -> 2026-03-21 @ 10:00 pm |
| Onset: | 2026-03-19 @ 1:55 pm -> 2026-03-20 @ 8:00 am |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Riverton WY on 2026-03-19 @ 1:55 pm |
| Headline: | Red Flag Warning issued March 19 at 12:55PM MDT until March 21 at 9:00PM MDT by NWS Riverton WY |
| Description: |
* IMPACTS: Low Humidities...Unseasonably Warm Temperatures...and Strong Gusty Winds could cause erratic fire behavior. * AFFECTED AREA: In Southwest WY Fire Zones...277...279. In West Central WY Fire Zone....278. * COUNTIES AFFECTED: In Southwest WY...Sweetwater...Uinta. In West Central WY...Lincoln...Sublette. * WIND: West 15 to 25 mph with gusts up to 40 mph, especially on Saturday. * HUMIDITY: As low as 10 percent. * TEMPERATURES: Highs in the lower 70s. Lows in the upper 30s. * ADDITIONAL DETAILS: Conditions are expected to improve during the overnight hours. |
| Alert: | Red Flag Warning |
| Area(s): | Natrona County/Casper BLM; Johnson County/Casper BLM; Granite/Green/Ferris/Rattlesnake Mountains |
| Effective: | 2026-03-19 @ 1:55 pm -> 2026-03-21 @ 10:00 pm |
| Onset: | 2026-03-19 @ 1:55 pm -> 2026-03-20 @ 8:00 am |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Riverton WY on 2026-03-19 @ 1:55 pm |
| Headline: | Red Flag Warning issued March 19 at 12:55PM MDT until March 21 at 9:00PM MDT by NWS Riverton WY |
| Description: |
* IMPACTS: Low Humidities...Unseasonably Warm Temperatures...and Strong Gusty Winds could cause erratic fire behavior. * AFFECTED AREA: In Central WY Fire Zones...280...289. In North Central WY Fire Zone....281. * COUNTIES AFFECTED: In Central WY...Fremont...Natrona. In North Central WY...Johnson. In Southwest WY...Sweetwater. * WIND: West 20 to 30 mph with gusts up to 45 mph, especially on Saturday. * HUMIDITY: As low as 8 percent. * TEMPERATURES: Highs in the upper 70s. Lows in the mid 40s. * ADDITIONAL DETAILS: Conditions are expected to improve during the overnight hours. |
| Alert: | Red Flag Warning |
| Area(s): | Cody Foothills; South Bighorn Basin/Worland BLM; Upper Wind River Basin/Wind River Basin; Owl Creek Mountains |
| Effective: | 2026-03-19 @ 1:55 pm -> 2026-03-21 @ 10:00 pm |
| Onset: | 2026-03-19 @ 1:55 pm -> 2026-03-20 @ 8:00 am |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Riverton WY on 2026-03-19 @ 1:55 pm |
| Headline: | Red Flag Warning issued March 19 at 12:55PM MDT until March 21 at 9:00PM MDT by NWS Riverton WY |
| Description: |
* IMPACTS: Low Humidities...Unseasonably Warm Temperatures...and Strong Gusty Winds could cause erratic fire behavior. * AFFECTED AREA: In Central WY Fire Zone....283. In North Central WY Fire Zones...276...282...287. * COUNTIES AFFECTED: In Central WY...Fremont. In North Central WY...Hot Springs...Park...Washakie. * WIND: West 20 to 30 mph with gusts up to 55 mph, especially on Saturday. * HUMIDITY: As low as 7 percent. * TEMPERATURES: Highs in the upper 70s. Lows in the mid 40s. * ADDITIONAL DETAILS: Conditions are expected to improve during the overnight hours. |