Cheyenne, Wyoming

Regional Weather Alerts


     

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: 2026-04-15 @ 7:14 pm -> 2026-04-16 @ 9:00 pm
Onset: 2026-04-16 @ 1:00 pm -> 2026-04-16 @ 9:00 pm
Severity: Severe
Certainty: Likely
Urgency: Expected
Issued By: NWS Cheyenne WY on 2026-04-15 @ 7:14 pm
Headline: Red Flag Warning issued April 15 at 6:14PM MDT until April 16 at 8:00PM MDT by NWS Cheyenne WY
Description: RED FLAG WARNING IN EFFECT THURSDAY FROM NOON TO 8PM.

* AFFECTED AREAS...Fire weather zones 430 through 437 along and
east of the I-25 corridor.

* WIND...Southwest wind gusts between 20 to 30 mph.

* HUMIDITY...10 to 15 percent

* IMPACTS...any fires that develop will likely spread rapidly.
Outdoor burning is not recommended.

Alert: High Wind Watch
Area(s): North Snowy Range Foothills
Effective: 2026-04-15 @ 3:43 pm -> 2026-04-16 @ 10:00 pm
Onset: 2026-04-16 @ 1:00 am -> 2026-04-16 @ 7:00 am
Severity: Severe
Certainty: Possible
Urgency: Future
Issued By: NWS Cheyenne WY on 2026-04-15 @ 3:43 pm
Headline: High Wind Watch issued April 15 at 2:43PM MDT until April 16 at 9:00PM MDT by NWS Cheyenne WY
Description: * WHAT...Southwest winds 30 to 40 mph with gusts up to 65 mph
possible.

* WHERE...North Snowy Range Foothills including Arlington and Elk
Mountain along Interstate 80.

* WHEN...From midnight MDT tonight through Thursday evening.

* IMPACTS...Mainly to transportation. Strong cross winds will be
hazardous to light weight or high profile vehicles, including
campers and tractor trailers.

Alert: High Wind Watch
Area(s): Ferris/Seminoe/Shirley Mountains; Central Carbon County; Upper North Platte River Basin
Effective: 2026-04-15 @ 3:43 pm -> 2026-04-16 @ 10:00 pm
Onset: 2026-04-16 @ 1:00 am -> 2026-04-16 @ 7:00 am
Severity: Severe
Certainty: Possible
Urgency: Future
Issued By: NWS Cheyenne WY on 2026-04-15 @ 3:43 pm
Headline: High Wind Watch issued April 15 at 2:43PM MDT until April 16 at 9:00PM MDT by NWS Cheyenne WY
Description: * WHAT...Southwest winds 25 to 35 mph with gusts up to 60 mph
possible.

* WHERE...Central Carbon County, Ferris/Seminoe/Shirley Mountains,
and Upper North Platte River Basin.

* WHEN...From midnight MDT tonight through Thursday evening.

* IMPACTS...Mainly to transportation. Strong cross winds will be
hazardous to light weight or high profile vehicles, including
campers and tractor trailers.

Alert: Winter Weather Advisory
Area(s): North Laramie Range
Effective: 2026-04-15 @ 2:06 pm -> 2026-04-17 @ 4:00 pm
Onset: 2026-04-16 @ 7:00 pm -> 2026-04-16 @ 7:00 am
Severity: Moderate
Certainty: Likely
Urgency: Expected
Issued By: NWS Cheyenne WY on 2026-04-15 @ 2:06 pm
Headline: Winter Weather Advisory issued April 15 at 1:06PM MDT until April 17 at 3:00PM MDT by NWS Cheyenne WY
Description: * WHAT...Snow expected. Total snow accumulations between 3 and 8
inches. Winds gusting as high as 45 mph.

* WHERE...North Laramie Range.

* WHEN...From 6 PM Thursday to 3 PM MDT Friday.

* IMPACTS...Outdoor recreation could become dangerous to those
caught unprepared for hazardous winter conditions. Hunters,
hikers, and snowmobilers may become disoriented and lost due to
low visibility in falling and blowing snow.

Alert: Winter Weather Advisory
Area(s): Ferris/Seminoe/Shirley Mountains; Shirley Basin; Central Carbon County; North Snowy Range Foothills; Southwest Carbon County; Upper North Platte River Basin
Effective: 2026-04-15 @ 2:06 pm -> 2026-04-17 @ 4:00 pm
Onset: 2026-04-16 @ 7:00 pm -> 2026-04-16 @ 7:00 am
Severity: Moderate
Certainty: Likely
Urgency: Expected
Issued By: NWS Cheyenne WY on 2026-04-15 @ 2:06 pm
Headline: Winter Weather Advisory issued April 15 at 1:06PM MDT until April 17 at 3:00PM MDT by NWS Cheyenne WY
Description: * WHAT...Snow, blowing snow, and reduced visibility expected. Total
snow accumulations between 2 and 4 inches. Winds gusting as high
as 50 mph.

* WHERE...Portions of Carbon and Albany county in south central
Wyoming.

* WHEN...From 6 PM Thursday to 3 PM MDT Friday.

* IMPACTS...Roads, and especially bridges and overpasses, will
likely become slick and hazardous.

* ADDITIONAL DETAILS...Rapidly dropping temperatures may lead to a
flash freeze and icy conditions Thursday evening into Friday
morning.

Alert: Winter Weather Advisory
Area(s): Converse County Lower Elevations
Effective: 2026-04-15 @ 2:06 pm -> 2026-04-17 @ 1:00 pm
Onset: 2026-04-16 @ 7:00 pm -> 2026-04-16 @ 7:00 am
Severity: Moderate
Certainty: Likely
Urgency: Expected
Issued By: NWS Cheyenne WY on 2026-04-15 @ 2:06 pm
Headline: Winter Weather Advisory issued April 15 at 1:06PM MDT until April 17 at 12:00PM MDT by NWS Cheyenne WY
Description: * WHAT...Snow, blowing snow, and reduced visibility expected. Total
snow accumulations between 1 and 4 inches. Winds gusting as high
as 45 mph.

* WHERE...Converse County Lower Elevations.

* WHEN...From 6 PM Thursday to noon MDT Friday.

* IMPACTS...Plan on slippery road conditions. The hazardous
conditions could impact the Friday morning commute.

* ADDITIONAL DETAILS...Rapidly dropping temperatures may lead to a
flash freeze and icy conditions Thursday evening into Friday
morning.

Alert: Winter Weather Advisory
Area(s): Southern Big Horn; Sheridan Foothills
Effective: 2026-04-15 @ 2:00 pm -> 2026-04-17 @ 7:00 am
Onset: 2026-04-16 @ 1:00 pm -> 2026-04-16 @ 2:00 pm
Severity: Moderate
Certainty: Likely
Urgency: Expected
Issued By: NWS Billings MT on 2026-04-15 @ 2:00 pm
Headline: Winter Weather Advisory issued April 15 at 1:00PM MDT until April 17 at 6:00AM MDT by NWS Billings MT
Description: * WHAT...Snow expected. Total snow accumulations up to three inches.
Winds gusting as high as 40 mph.

* WHERE...In Montana, Southern Big Horn. In Wyoming, Sheridan
Foothills.

* WHEN...From noon Thursday to 6 AM MDT Friday.

* IMPACTS...Falling snow and breezy winds may lead to visibility
reductions due to blowing snow. The hazardous conditions will
impact the Thursday evening commute.

* ADDITIONAL DETAILS...The greatest impacts for Southern Bighorn
County will be on I-90 near Aberdeen Hill and the Wolf Mountains.

Alert: Winter Weather Advisory
Area(s): Pryor/Northern Bighorn Mountains; Northeast Bighorn Mountains
Effective: 2026-04-15 @ 2:00 pm -> 2026-04-17 @ 7:00 am
Onset: 2026-04-16 @ 10:00 am -> 2026-04-16 @ 2:00 pm
Severity: Moderate
Certainty: Likely
Urgency: Expected
Issued By: NWS Billings MT on 2026-04-15 @ 2:00 pm
Headline: Winter Weather Advisory issued April 15 at 1:00PM MDT until April 17 at 6:00AM MDT by NWS Billings MT
Description: * WHAT...Snow expected. Total snow accumulations between 6 and 12
inches. Winds gusting as high as 35 mph.

* WHERE...In Montana, Pryor/Northern Bighorn Mountains. In Wyoming,
Northeast Bighorn Mountains.

* WHEN...From 9 AM Thursday to 6 AM MDT Friday.

* IMPACTS...Travel could be very difficult on Highway 14. Blowing
snow could significantly reduce visibility. The hazardous
conditions will impact the Thursday morning and evening commutes.

Alert: Winter Storm Warning
Area(s): Yellowstone National Park; Absaroka Mountains; Teton and Gros Ventre Mountains
Effective: 2026-04-15 @ 12:56 pm -> 2026-04-17 @ 7:00 am
Onset: 2026-04-15 @ 7:00 pm -> 2026-04-16 @ 8:00 am
Severity: Severe
Certainty: Likely
Urgency: Expected
Issued By: NWS Riverton WY on 2026-04-15 @ 12:56 pm
Headline: Winter Storm Warning issued April 15 at 11:56AM MDT until April 17 at 6:00AM MDT by NWS Riverton WY
Description: * WHAT...Heavy snow expected. Total snow accumulations between 9 and
18 inches, with the highest elevations could see up to 20 inches.
Winds gusting between 30 and 50 mph. Higher elevations could gust
up to 55 mph.

* WHERE...Absaroka Mountains, Teton and Gros Ventre Mountains, and
Yellowstone National Park.

* WHEN...From 6 PM this evening to 6 AM MDT Friday.

* IMPACTS...Travel could be very difficult, especially across Teton
Pass and Togwotee Pass. Strong winds will cause limited visibility.

Alert: Winter Storm Warning
Area(s): Wind River Mountains West; Wind River Mountains East
Effective: 2026-04-15 @ 12:56 pm -> 2026-04-17 @ 7:00 pm
Onset: 2026-04-15 @ 7:00 pm -> 2026-04-16 @ 8:00 am
Severity: Severe
Certainty: Likely
Urgency: Expected
Issued By: NWS Riverton WY on 2026-04-15 @ 12:56 pm
Headline: Winter Storm Warning issued April 15 at 11:56AM MDT until April 17 at 6:00PM MDT by NWS Riverton WY
Description: * WHAT...Heavy snow expected. Total snow accumulations between 9 and
18 inches across the mountains. Expect snow accumulations of 5 to
7 inches for South Pass. Winds gusting between 45 and 60 mph,
including across South Pass.

* WHERE...Wind River Mountains East and Wind River Mountains West.

* WHEN...From 6 PM this evening to 6 PM MDT Friday.

* IMPACTS...Travel could be very difficult, especially across South
Pass. Strong winds will cause limited visibility.

Alert: Winter Weather Advisory
Area(s): Green Mountains and Rattlesnake Range; Casper Mountain
Effective: 2026-04-15 @ 12:56 pm -> 2026-04-17 @ 1:00 pm
Onset: 2026-04-16 @ 4:00 pm -> 2026-04-16 @ 8:00 am
Severity: Moderate
Certainty: Likely
Urgency: Expected
Issued By: NWS Riverton WY on 2026-04-15 @ 12:56 pm
Headline: Winter Weather Advisory issued April 15 at 11:56AM MDT until April 17 at 12:00PM MDT by NWS Riverton WY
Description: * WHAT...Snow and wind expected. Total snow accumulations between 3
and 8 inches, with localized higher amounts possible across the
highest terrain. Winds gusting between 35 and 55 mph.

* WHERE...Casper Mountain and Green Mountains and Rattlesnake Range.

* WHEN...From 3 PM Thursday to noon MDT Friday.

* IMPACTS...Travel could be difficult, especially across US 287. The
hazardous conditions could impact travel Thursday evening through
Friday morning. Gusty winds and snow will cause limited visibility.

* ADDITIONAL DETAILS...Heavy snow bands and strong winds are
possible Thursday evening through Friday morning. If a heavy band
of snow does occur, expect instances of very low visibilities.

Alert: Winter Weather Advisory
Area(s): Natrona County Lower Elevations
Effective: 2026-04-15 @ 12:56 pm -> 2026-04-17 @ 1:00 pm
Onset: 2026-04-16 @ 4:00 pm -> 2026-04-16 @ 8:00 am
Severity: Moderate
Certainty: Likely
Urgency: Expected
Issued By: NWS Riverton WY on 2026-04-15 @ 12:56 pm
Headline: Winter Weather Advisory issued April 15 at 11:56AM MDT until April 17 at 12:00PM MDT by NWS Riverton WY
Description: * WHAT...Snow, wind, and cold expected. Total snow accumulations
between 2 and 5 inches, with localized amounts up to 6 inches
possible. Winds gusting between 45 and 55 mph. Expect temperatures
below 28 degrees Friday morning.

* WHERE...Natrona County Lower Elevations.

* WHEN...From 3 PM Thursday to noon MDT Friday.

* IMPACTS...Plan on hazardous road conditions, including along US
20/26 from the Fremont/Natrona County line and east. Gusty winds
and snow will cause limited visibility. Vulnerable outdoor
equipment and vegetation could be impacted by freezing
temperatures.

* ADDITIONAL DETAILS...Snow squalls are possible Thursday afternoon
and evening. If a snow squall does occur, expect instances of very
low visibilities. Temperatures will drop below 28 degrees by
Friday morning.

Alert: Winter Weather Advisory
Area(s): Northeast Johnson County; Southeast Johnson County
Effective: 2026-04-15 @ 12:56 pm -> 2026-04-17 @ 7:00 am
Onset: 2026-04-16 @ 1:00 pm -> 2026-04-16 @ 8:00 am
Severity: Moderate
Certainty: Likely
Urgency: Expected
Issued By: NWS Riverton WY on 2026-04-15 @ 12:56 pm
Headline: Winter Weather Advisory issued April 15 at 11:56AM MDT until April 17 at 6:00AM MDT by NWS Riverton WY
Description: * WHAT...Snow, wind, and cold expected. Total snow accumulations
between 1 and 3 inches with gusty north winds. Winds gusting
between 35 and 55 mph, with gusts of 60 mph possible. Expect
temperatures below 28 degrees Friday morning.

* WHERE...Northeast Johnson County and Southeast Johnson County.

* WHEN...From noon Thursday to 6 AM MDT Friday.

* IMPACTS...Plan on hazardous road conditions, including along I-25.
Gusty winds and snow will cause limited visibility. Vulnerable
outdoor equipment and vegetation could be impacted by freezing
temperatures.

* ADDITIONAL DETAILS...Snow squalls are possible Thursday afternoon
and evening. If a snow squall does occur, expect instances of very
low visibilities. Temperatures will drop below 28 degrees by
Friday morning.

Alert: Winter Weather Advisory
Area(s): Upper Wind River Basin; Wind River Basin; Lander Foothills
Effective: 2026-04-15 @ 12:56 pm -> 2026-04-17 @ 7:00 am
Onset: 2026-04-16 @ 4:00 pm -> 2026-04-16 @ 8:00 am
Severity: Moderate
Certainty: Likely
Urgency: Expected
Issued By: NWS Riverton WY on 2026-04-15 @ 12:56 pm
Headline: Winter Weather Advisory issued April 15 at 11:56AM MDT until April 17 at 6:00AM MDT by NWS Riverton WY
Description: * WHAT...Snow, wind, and cold expected. Total snow accumulations of
0.5 to 3 inches, with isolated amounts up to 5 inches possible in
the Lander Foothills. Winds gusting between 35 and 45 mph, with
occasional gusts around 50 mph possible. Expect temperatures below
28 degrees Friday morning.

* WHERE...Lander Foothills, Upper Wind River Basin, and Wind River
Basin.

* WHEN...From 3 PM Thursday to 6 AM MDT Friday.

* IMPACTS...Plan on slippery and potentially hazardous road
conditions, especially on US 20/26 from Shoshoni to the
Fremont/Natrona County line. The hazardous conditions could impact
travel on Thursday evening. Gusty winds and snow will cause
limited visibility. Vulnerable outdoor equipment and vegetation
could be impacted by freezing temperatures.

* ADDITIONAL DETAILS...Brief periods of heavy snow bands and strong
winds are possible Thursday evening, especially on US 20/26 from
Shoshoni to the Fremont/Natrona County line. If a heavy band of
snow does occur, expect instances of very low visibilities.
Temperatures will drop below 28 degrees by Friday morning.

Alert: Winter Weather Advisory
Area(s): Bighorn Mountains West; Bighorn Mountains Southeast
Effective: 2026-04-15 @ 12:56 pm -> 2026-04-17 @ 7:00 am
Onset: 2026-04-16 @ 10:00 am -> 2026-04-16 @ 8:00 am
Severity: Moderate
Certainty: Likely
Urgency: Expected
Issued By: NWS Riverton WY on 2026-04-15 @ 12:56 pm
Headline: Winter Weather Advisory issued April 15 at 11:56AM MDT until April 17 at 6:00AM MDT by NWS Riverton WY
Description: * WHAT...Snow and wind expected. Total snow accumulations between 6
and 13 inches for elevations above 7,000 feet. Total snow
accumulations of 9 to 12 inches across Powder River Pass. Winds
gusting between 35 and 55 mph.

* WHERE...Bighorn Mountains Southeast and Bighorn Mountains West.

* WHEN...From 9 AM Thursday to 6 AM MDT Friday.

* IMPACTS...Travel could be difficult, especially over Powder River
Pass, on Thursday. Gusty winds will cause limited visibility.

Alert: Red Flag Warning
Area(s): Southern Black Hills; Fall River County Area; Custer County Plains; Pine Ridge Area; Badlands Area; Bennett County Area; Mellette and Todd Counties; Tripp County; Weston County Plains
Effective: 2026-04-15 @ 12:09 pm -> 2026-04-16 @ 8:00 pm
Onset: 2026-04-16 @ 1:00 pm -> 2026-04-16 @ 3:15 am
Severity: Severe
Certainty: Likely
Urgency: Expected
Issued By: NWS Rapid City SD on 2026-04-15 @ 12:09 pm
Headline: Red Flag Warning issued April 15 at 11:09AM MDT until April 16 at 7:00PM MDT by NWS Rapid City SD
Description: ...CRITICAL FIRE WEATHER CONDITIONS POSSIBLE THURSDAY ACROSS
PORTIONS OF NORTHEASTERN WYOMING AND SOUTHWESTERN INTO SOUTH
CENTRAL SOUTH DAKOTA...

.Anomalously warm (70s and 80s) and dry (relative humidity
dropping to 13 percent) Thursday ahead of a cold front. Southwest
winds will increase through the day with gusts to 40 mph. The
combination of warm, dry, and windy conditions ahead of a cold
front may result in critical fire weather conditions Thursday
afternoon and evening.

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 noon MDT /1 PM CDT/ to 7 PM MDT /8 PM CDT/ Thursday.
The Fire Weather Watch is no longer in effect.

* AFFECTED AREA...Fire Weather Zones 317 Weston County Plains,
321 Southern Black Hills, 322 Fall River County Area, 325
Custer County Plains, 326 Pine Ridge Area, 332 Badlands Area,
333 Bennett County Area, 334 Mellette and Todd Counties and
335 Tripp County.

* WINDS...West 15 to 25 mph with gusts up to 40 mph.

* RELATIVE HUMIDITY...As low as 13 percent.

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