Cheyenne, Wyoming

Regional Weather Alerts


     

Alert: Flood Watch
Area(s): Musselshell; Northern Stillwater; Golden Valley; Red Lodge Foothills; Northern Big Horn; Paradise Valley; Livingston Area; Beartooth Foothills; Absaroka/Beartooth Mountains; Southern Big Horn; Southeastern Carbon; Northern Sweet Grass; Bighorn Canyon; Northern Carbon; Pryor/Northern Bighorn Mountains; Melville Foothills; Northeastern Yellowstone; Southwestern Yellowstone; Northeast Bighorn Mountains; Sheridan Foothills
Effective: 2026-07-15 @ 6:45 am -> 2026-07-16 @ 4:00 am
Onset: 2026-07-15 @ 1:00 pm -> 2026-07-16 @ 4:00 am
Severity: Severe
Certainty: Possible
Urgency: Future
Issued By: NWS Billings MT on 2026-07-15 @ 6:45 am
Headline: Flood Watch issued July 15 at 5:45AM MDT until July 16 at 3:00AM MDT by NWS Billings MT
Description: Scattered thunderstorms capable of producing very heavy rainfall are
expected this afternoon and evening.

* WHAT...Flash flooding caused by excessive rainfall from
thunderstorms is possible. The risk of flash flooding includes
recent burn scars such as the Robertson Draw and East Side Fires
south of Red Lodge, and the Elk Fire along the eastern slopes of
the Bighorn Mountains.

* WHERE...Portions of Montana, including the following areas,
Absaroka/Beartooth Mountains, Beartooth Foothills, Bighorn Canyon,
Golden Valley, Livingston Area, Melville Foothills, Musselshell,
Northeastern Yellowstone, Northern Big Horn, Northern Carbon,
Northern Stillwater, Northern Sweet Grass, Paradise Valley,
Pryor/Northern Bighorn Mountains, Red Lodge Foothills, Southeastern
Carbon, Southern Big Horn and Southwestern Yellowstone and north
central Wyoming, including the following areas, Northeast Bighorn
Mountains and Sheridan Foothills.

* WHEN...From noon MDT today through late tonight.

* IMPACTS...Excessive runoff may result in flooding of rivers,
creeks, and other low-lying and flood-prone locations. Flooding may
occur in poor drainage and urban areas.

* ADDITIONAL DETAILS...
- Expect slow-moving thunderstorms capable of producing very high
rainfall rates.
- http://www.weather.gov/safety/flood

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; Haakon; Western Fall River; Northern Oglala Lakota; Northern Jackson; Bennett; Mellette; Todd; Tripp; Sturgis/Piedmont Foothills; Southern Meade Co Plains; Hermosa Foothills; Eastern Fall River; Southern Oglala Lakota; Southern Jackson; Southern Perkins; Northern Campbell; Southern Campbell; Western Crook; Weston County Plains; Newcastle; Northeastern Crook
Effective: 2026-07-15 @ 6:34 am -> 2026-07-15 @ 9:45 pm
Onset: 2026-07-15 @ 6:34 am -> 2026-07-16 @ 10:00 pm
Severity: Moderate
Certainty: Likely
Urgency: Expected
Issued By: NWS Rapid City SD on 2026-07-15 @ 6:34 am
Headline: Heat Advisory issued July 15 at 5:34AM MDT until July 16 at 9:00PM MDT by NWS Rapid City SD
Description: * WHAT...Heat index values between 95 and 105.

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

* WHEN...Until 9 PM MDT /10 PM CDT/ Thursday.

* IMPACTS...Hot temperatures and high humidity may cause heat
illnesses.

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; North Laramie Valley/Shirley Basin; Southwest Carbon County; North Snowy Range Foothills; Laramie Foothills and High Plains; Laramie East High Plains; Bordeaux/Chugwater/Wheatland; Goshen/Middle-Lower North Platte River Basin
Effective: 2026-07-15 @ 1:26 am -> 2026-07-15 @ 7:00 pm
Onset: 2026-07-15 @ 1:26 am -> 2026-07-15 @ 9:00 pm
Severity: Severe
Certainty: Likely
Urgency: Expected
Issued By: NWS Cheyenne WY on 2026-07-15 @ 1:26 am
Headline: Red Flag Warning issued July 15 at 12:26AM MDT until July 15 at 8:00PM MDT by NWS Cheyenne WY
Description: * AFFECTED AREA...Fire weather zones 417, 418, 419, 420, 423, 427,
430, 431, 432, 433, 434, 435, 436, and 437.

* WIND...South to southeast winds 15 to 20 mph gusting up to 35
mph.

* HUMIDITY...Between 10 and 15 percent

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

Alert: Heat Advisory
Area(s): Dawes; Box Butte; Scotts Bluff; Banner; Morrill; Kimball; Cheyenne; North Sioux; South Sioux; Converse County Lower Elevations; Niobrara County; East Platte County; Goshen County; Central Laramie County; East Laramie County
Effective: 2026-07-15 @ 1:18 am -> 2026-07-15 @ 7:00 pm
Onset: 2026-07-15 @ 1:18 am -> 2026-07-16 @ 1:00 am
Severity: Moderate
Certainty: Likely
Urgency: Expected
Issued By: NWS Cheyenne WY on 2026-07-15 @ 1:18 am
Headline: Heat Advisory issued July 15 at 12:18AM MDT until July 16 at 12:00AM MDT by NWS Cheyenne WY
Description: * WHAT...Afternoon temperatures will be in the mid-90s to low-100
degrees with overnight temperatures dropping to between 60 and 70,
providing little relief.

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

* WHEN...Until midnight MDT tonight.

* IMPACTS...Hot temperatures and poor hydration may cause heat
illnesses or injuries.