Cheyenne, Wyoming

Regional Weather Alerts


     

Alert: Special Weather Statement
Area(s): Star Valley; Salt River and Wyoming Ranges
Effective: 2026-04-11 @ 1:40 pm
Onset: 2026-04-11 @ 1:40 pm -> 2026-04-11 @ 2:15 pm
Severity: Moderate
Certainty: Observed
Urgency: Expected
Issued By: NWS Riverton WY on 2026-04-11 @ 1:40 pm
Headline: Special Weather Statement issued April 11 at 12:40PM MDT by NWS Riverton WY
Description: At 1240 PM MDT, Doppler radar was tracking a strong thunderstorm over
Thayne, moving north at 30 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...
Star Valley Ranch and Freedom around 1245 PM MDT.
Stewart Peak around 1255 PM MDT.

Alert: Red Flag Warning
Area(s): Crook County Plains
Effective: 2026-04-11 @ 1:06 pm -> 2026-04-11 @ 9:00 pm
Onset: 2026-04-11 @ 1:06 pm -> 2026-04-11 @ 9:00 pm
Severity: Severe
Certainty: Likely
Urgency: Expected
Issued By: NWS Rapid City SD on 2026-04-11 @ 1:06 pm
Headline: Red Flag Warning issued April 11 at 12:06PM MDT until April 11 at 8:00PM MDT by NWS Rapid City SD
Description: ...CRITICAL FIRE WEATHER CONDITIONS THROUGH SUNDAY ACROSS
PORTIONS OF NORTHEASTERN WYOMING AND WESTERN SOUTH DAKOTA...

.Warm, dry, and breezy weather will support critical fire weather
conditions over northeastern Wyoming and southwestern South
Dakota this afternoon and again Sunday afternoon. In addition,
isolated dry thunderstorms are possible late this afternoon and
evening. While confidence in timing and occurrence is low,
erratic wind gusts in excess of 50 MPH would be possible if a dry
thunderstorm occurs.

* AFFECTED AREA...Fire Weather Zone 316 Crook County Plains.

* WINDS...Southwest 10 to 15 mph with gusts up to 25 mph.

* RELATIVE HUMIDITY...As low as 15 percent.

* IMPACTS...The combination of gusty winds and low relative
humidity will produce critical fire weather conditions.

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; Northern Campbell; Southern Campbell; Weston County Plains
Effective: 2026-04-11 @ 1:06 pm -> 2026-04-12 @ 10:00 pm
Onset: 2026-04-11 @ 1:06 pm -> 2026-04-12 @ 4:15 am
Severity: Severe
Certainty: Likely
Urgency: Expected
Issued By: NWS Rapid City SD on 2026-04-11 @ 1:06 pm
Headline: Red Flag Warning issued April 11 at 12:06PM MDT until April 12 at 9:00PM MDT by NWS Rapid City SD
Description: ...CRITICAL FIRE WEATHER CONDITIONS THROUGH SUNDAY ACROSS
PORTIONS OF NORTHEASTERN WYOMING AND WESTERN SOUTH DAKOTA...

.Warm, dry, and breezy weather will support critical fire weather
conditions over northeastern Wyoming and southwestern South
Dakota this afternoon and again Sunday afternoon. In addition,
isolated dry thunderstorms are possible late this afternoon and
evening. While confidence in timing and occurrence is low,
erratic wind gusts in excess of 50 MPH would be possible if a dry
thunderstorm occurs.

* AFFECTED AREA...Fire Weather Zones 314 Northern Campbell, 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...Southwest 10 to 20 mph with gusts up to 35 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): 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: 2026-04-11 @ 12:01 pm -> 2026-04-13 @ 9:00 pm
Onset: 2026-04-12 @ 1:00 pm -> 2026-04-12 @ 7:15 am
Severity: Severe
Certainty: Likely
Urgency: Expected
Issued By: NWS Cheyenne WY on 2026-04-11 @ 12:01 pm
Headline: Red Flag Warning issued April 11 at 11:01AM MDT until April 13 at 8:00PM MDT by NWS Cheyenne WY
Description: The National Weather Service in Cheyenne has issued a Red Flag
Warning, which is in effect from noon Sunday to 8 PM MDT Monday.
The Fire Weather Watch has been upgraded.

* 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.