Cheyenne, Wyoming

Regional Weather Alerts


     

Alert: Special Weather Statement
Area(s): Central Laramie County; East Laramie County
Effective: 2026-07-25 @ 8:50 pm -> 2026-07-25 @ 9:15 pm
Onset: 2026-07-25 @ 8:50 pm
Severity: Moderate
Certainty: Observed
Urgency: Expected
Issued By: NWS Cheyenne WY on 2026-07-25 @ 8:50 pm
Headline: Special Weather Statement issued July 25 at 7:50PM MDT by NWS Cheyenne WY
Description: At 749 PM MDT, Doppler radar was tracking a strong thunderstorm near
Hillsdale, or 19 miles northeast of Cheyenne, moving east at 30 mph.

HAZARD...Wind gusts up to 50 mph.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects.

Locations impacted include...
Burns, Egbert, and Hillsdale.

This includes Interstate 80 in Wyoming between mile markers 381 and
395.

Alert: Red Flag Warning
Area(s): Gallatin National Forest; Wheatland County/Sweet Grass County; Stillwater County; Beartooth Ranger District Custer National Forest; Golden Valley County/Musselshell County; Yellowstone County; Crow Indian Reservation/Big Horn Canyon Rec Area; Northern Rosebud/Northern Treasure Counties; Northern Cheyenne Indian Reservation/Ashland Ranger District Custer Natl Forest; Custer County; Sioux Ranger District Custer National Forest; Sheridan County/Casper BLM; Bighorn National Forest
Effective: 2026-07-25 @ 2:58 pm -> 2026-07-26 @ 1:00 am
Onset: 2026-07-25 @ 2:58 pm -> 2026-07-26 @ 1:00 am
Severity: Severe
Certainty: Likely
Urgency: Expected
Issued By: NWS Billings MT on 2026-07-25 @ 2:58 pm
Headline: Red Flag Warning issued July 25 at 1:58PM MDT until July 26 at 12:00AM MDT by NWS Billings MT
Description: * IMPACTS: Low humidities, hot temperatures, and dry
thunderstorms with gusty and erratic outflow winds will create
erratic fire behavior and new fire starts.

* AFFECTED AREA:
In North Central WY Fire Zones...274...284.
In South Central MT Fire Zones...123...124...125...126...127
128...129.
In Southeast MT Fire Zones...130...131...132.
In Southeast MT and Northwest SD Fire Zone...133.

* COUNTIES AFFECTED:
In Central MT...Golden Valley...Musselshell...Wheatland.
In North Central WY...Big Horn...Johnson...Sheridan...Washakie.
In Northwest SD...Harding.
In South Central MT...Big Horn...Carbon...Park...Stillwater
Sweet Grass...Yellowstone.
In Southeast MT...Carter...Custer...Fallon...Powder River
Rosebud...Treasure.
In Southwest MT...Gallatin.

* WIND: Southwest 5 to 10 mph with gusts up to 25 mph.

* THUNDERSTORMS: Isolated to scattered afternoon and evening
thunderstorms will produce gusty and erratic winds, and spotty
rainfall.

* HUMIDITY: As low as 12 percent.

* TEMPERATURES: Up to 106.

Alert: Heat Advisory
Area(s): Central Laramie County; East Laramie County
Effective: 2026-07-25 @ 2:04 pm -> 2026-07-26 @ 7:00 am
Onset: 2026-07-25 @ 2:04 pm -> 2026-07-27 @ 10:00 pm
Severity: Moderate
Certainty: Likely
Urgency: Expected
Issued By: NWS Cheyenne WY on 2026-07-25 @ 2:04 pm
Headline: Heat Advisory issued July 25 at 1:04PM MDT until July 27 at 9:00PM MDT by NWS Cheyenne WY
Description: * WHAT...Afternoon high temperatures between 95 and 99 degrees.
Overnight low temperatures in the mid 60s.

* WHERE...Central and eastern Laramie County.

* WHEN...Until 9 PM MDT Monday.

* IMPACTS...Hot temperatures may cause heat illnesses.

Alert: Heat Advisory
Area(s): Box Butte; Scotts Bluff; Banner; Morrill; Kimball; Cheyenne; South Sioux; Converse County Lower Elevations; Niobrara County; East Platte County; Goshen County
Effective: 2026-07-25 @ 2:04 pm -> 2026-07-26 @ 7:00 am
Onset: 2026-07-25 @ 2:04 pm -> 2026-07-27 @ 10:00 pm
Severity: Moderate
Certainty: Likely
Urgency: Expected
Issued By: NWS Cheyenne WY on 2026-07-25 @ 2:04 pm
Headline: Heat Advisory issued July 25 at 1:04PM MDT until July 27 at 9:00PM MDT by NWS Cheyenne WY
Description: * WHAT...Afternoon high temperatures between 100 and 107 degrees.
Overnight low temperatures in the upper 60s to lower 70s.

* WHERE...Portions of panhandle Nebraska and east central and
southeast Wyoming.

* WHEN...Until 9 PM MDT Monday.

* IMPACTS...Hot temperatures may cause heat illnesses.

Alert: Heat Advisory
Area(s): Cody Foothills; North Bighorn Basin; Southwest Bighorn Basin; Southeast Bighorn Basin; Northeast Johnson County; Southeast Johnson County; Wind River Basin; Lander Foothills; Natrona County Lower Elevations
Effective: 2026-07-25 @ 1:48 pm -> 2026-07-26 @ 8:00 am
Onset: 2026-07-25 @ 1:48 pm -> 2026-07-26 @ 10:00 pm
Severity: Moderate
Certainty: Likely
Urgency: Expected
Issued By: NWS Riverton WY on 2026-07-25 @ 1:48 pm
Headline: Heat Advisory issued July 25 at 12:48PM MDT until July 26 at 9:00PM MDT by NWS Riverton WY
Description: * WHAT...Very hot conditions with high temperatures from 95 to 102
degrees.

* WHERE...Lower elevations of central and north-central Wyoming, east
of the Continental Divide.

* WHEN...Until 9 PM MDT Sunday.

* IMPACTS...Heat related illnesses increase significantly during
extreme heat events.

* ADDITIONAL DETAILS...Some locations will not see temperatures fall
below 90 degrees until sunset. Temperatures at midnight will still
be 75 to 80 degrees. Overnight low temperatures eventually
bottom-out in the mid to upper 60s.

Alert: Extreme Heat Warning
Area(s): Musselshell; Treasure; Northern Rosebud; Custer; Fallon; Northern Stillwater; Powder River; Carter; Golden Valley; Northern Big Horn; Southern Rosebud; Southern Big Horn; Southeastern Carbon; Bighorn Canyon; Northern Carbon; Northeastern Yellowstone; Southwestern Yellowstone; Sheridan Foothills
Effective: 2026-07-25 @ 11:52 am -> 2026-07-26 @ 12:00 pm
Onset: 2026-07-25 @ 11:52 am -> 2026-07-26 @ 10:00 pm
Severity: Severe
Certainty: Likely
Urgency: Expected
Issued By: NWS Billings MT on 2026-07-25 @ 11:52 am
Headline: Extreme Heat Warning issued July 25 at 10:52AM MDT until July 26 at 9:00PM MDT by NWS Billings MT
Description: * WHAT...Dangerously hot conditions with high temperatures of 100 to
108, hottest over eastern Montana. Today is expected to be the
hottest day.

* WHERE...Portions of central, south central, and southeast Montana
and north central Wyoming.

* WHEN...Until 9 PM MDT Sunday.

* IMPACTS...Heat related illnesses increase significantly during
extreme heat events.

* ADDITIONAL DETAILS...Dangerously hot daytime temperatures combined
with warm overnight low temperatures will produce cumulative heat
stress. This heat stress will quickly become dangerous to anyone
without adequate cooling and hydration.

Alert: Heat Advisory
Area(s): Harding; Northern Perkins; Butte; Northern Meade Co Plains; Ziebach; Northern Foothills; Rapid City; Southern Foothills; Custer Co Plains; Pennington Co Plains; Western Fall River; Northern Oglala Lakota; Sturgis/Piedmont Foothills; Southern Meade Co Plains; Hermosa Foothills; Eastern Fall River; Southern Oglala Lakota; Southern Perkins; Northeastern Crook
Effective: 2026-07-25 @ 11:46 am -> 2026-07-26 @ 3:00 am
Onset: 2026-07-25 @ 1:00 pm -> 2026-07-26 @ 9:00 pm
Severity: Moderate
Certainty: Likely
Urgency: Expected
Issued By: NWS Rapid City SD on 2026-07-25 @ 11:46 am
Headline: Heat Advisory issued July 25 at 10:46AM MDT until July 26 at 8:00PM MDT by NWS Rapid City SD
Description: * WHAT...Heat index values up to 105 expected.

* WHERE...Portions of northwestern and southwestern South Dakota and
northeast Wyoming.

* WHEN...Until 8 PM MDT Sunday.

* IMPACTS...Hot temperatures may cause heat illnesses.

Alert: Heat Advisory
Area(s): Northern Campbell; Southern Campbell; Western Crook; Weston County Plains; Newcastle
Effective: 2026-07-25 @ 11:46 am -> 2026-07-26 @ 3:00 am
Onset: 2026-07-25 @ 1:00 pm -> 2026-07-26 @ 9:00 pm
Severity: Moderate
Certainty: Likely
Urgency: Expected
Issued By: NWS Rapid City SD on 2026-07-25 @ 11:46 am
Headline: Heat Advisory issued July 25 at 10:46AM MDT until July 26 at 8:00PM MDT by NWS Rapid City SD
Description: * WHAT...Heat index values to around 100 expected.

* WHERE...Newcastle, Northern Campbell, Southern Campbell, Western
Crook, and Weston County Plains.

* WHEN...Until 8 PM MDT Sunday.

* IMPACTS...Hot temperatures may cause heat illnesses.