Cheyenne, Wyoming

Regional Weather Alerts


     

Alert: Flood Advisory
Area(s): Hot Springs, WY
Effective: 2026-07-15 @ 7:25 pm -> 2026-07-15 @ 9:15 pm
Onset: 2026-07-15 @ 7:25 pm -> 2026-07-15 @ 9:15 pm
Severity: Minor
Certainty: Likely
Urgency: Expected
Issued By: NWS Riverton WY on 2026-07-15 @ 7:25 pm
Headline: Flood Advisory issued July 15 at 6:25PM MDT until July 15 at 8:15PM MDT by NWS Riverton WY
Description: * WHAT...Flooding caused by excessive rainfall continues.

* WHERE...Southeastern Hot Springs County in central Wyoming...

* WHEN...Until 815 PM MDT.

* IMPACTS...Minor flooding in low-lying and poor drainage areas.

* ADDITIONAL DETAILS...
- At 622 PM MDT, Doppler radar indicated heavy rain due to
thunderstorms. Rapid river rises will cause minor flooding in the
advisory area. Between 1 and 2.5 inches of rain have fallen. Rain
continues to fall over the area, but not as heavy as what
occurred initially.
- This includes the following streams and drainages...
East Fork Jones Creek, Jones Creek and Buffalo Creek.
- Some locations that will experience flooding include...
Mainly rural areas of Southeastern Hot Springs County.
- http://www.weather.gov/safety/flood

Alert: Flood Advisory
Area(s): Hot Springs, WY
Effective: 2026-07-15 @ 7:14 pm -> 2026-07-15 @ 10:15 pm
Onset: 2026-07-15 @ 7:14 pm -> 2026-07-15 @ 10:15 pm
Severity: Minor
Certainty: Likely
Urgency: Expected
Issued By: NWS Riverton WY on 2026-07-15 @ 7:14 pm
Headline: Flood Advisory issued July 15 at 6:14PM MDT until July 15 at 9:15PM MDT by NWS Riverton WY
Description: * WHAT...Flooding caused by excessive rainfall is expected.

* WHERE...Southeastern Hot Springs County in central Wyoming...

* WHEN...Until 915 PM MDT.

* IMPACTS...Minor flooding in low-lying and poor drainage areas.

* ADDITIONAL DETAILS...
- At 613 PM MDT, Doppler radar indicated heavy rain due to
thunderstorms. Rapid river rises will cause minor flooding in the
advisory area. Between 1.5 and 3 inches of rain have fallen.
- This includes the following streams and drainages...
Jones Creek, West Bridger Creek, West Kirby Creek, Alkali Creek,
Reed Creek, Twin Buttes Draw, Buffalo Creek, Kirby Creek and
Ditch Creek.
- Some locations that will experience flooding include...
Mainly rural areas of Southeastern Hot Springs County.
- http://www.weather.gov/safety/flood

Alert: Flood Advisory
Area(s): Big Horn, WY
Effective: 2026-07-15 @ 7:08 pm -> 2026-07-15 @ 10:15 pm
Onset: 2026-07-15 @ 7:08 pm -> 2026-07-15 @ 10:15 pm
Severity: Minor
Certainty: Likely
Urgency: Expected
Issued By: NWS Riverton WY on 2026-07-15 @ 7:08 pm
Headline: Flood Advisory issued July 15 at 6:08PM MDT until July 15 at 9:15PM MDT by NWS Riverton WY
Description: * WHAT...Small stream flooding caused by excessive rainfall is
expected.

* WHERE...North Central Big Horn County in central Wyoming...

* WHEN...Until 915 PM MDT.

* IMPACTS...Rises in small streams and normally dry arroyos. River or
stream flows are elevated.

* ADDITIONAL DETAILS...
- At 607 PM MDT, Doppler radar indicated heavy rain due to
thunderstorms. This will cause small stream flooding. Between 2.5
and 3.5 inches of rain have fallen.
- This includes the following streams and drainages...
Porcupine Creek, Spring Creek, Cottonwood Creek, Tillets Hole,
Devil Canyon, Cow Creek, Deer Creek, Five Springs Creek, Bucking
Mule Creek, Bald Mountain Creek and Beaver Creek.
- Some locations that will experience flooding include...
Porcupine Campground.
- http://www.weather.gov/safety/flood

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 @ 2:50 pm -> 2026-07-16 @ 4:00 am
Onset: 2026-07-15 @ 2:50 pm -> 2026-07-16 @ 4:00 am
Severity: Severe
Certainty: Possible
Urgency: Future
Issued By: NWS Billings MT on 2026-07-15 @ 2:50 pm
Headline: Flood Watch issued July 15 at 1:50PM MDT until July 16 at 3:00AM MDT by NWS Billings MT
Description: * 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...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: 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 @ 2:40 pm -> 2026-07-15 @ 9:00 pm
Onset: 2026-07-15 @ 2:40 pm -> 2026-07-15 @ 9:00 pm
Severity: Severe
Certainty: Likely
Urgency: Expected
Issued By: NWS Cheyenne WY on 2026-07-15 @ 2:40 pm
Headline: Red Flag Warning issued July 15 at 1:40PM 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 @ 2:39 pm -> 2026-07-16 @ 1:00 am
Onset: 2026-07-15 @ 2:39 pm -> 2026-07-16 @ 1:00 am
Severity: Moderate
Certainty: Likely
Urgency: Expected
Issued By: NWS Cheyenne WY on 2026-07-15 @ 2:39 pm
Headline: Heat Advisory issued July 15 at 1:39PM 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.

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 @ 2:00 pm -> 2026-07-16 @ 7:30 am
Onset: 2026-07-15 @ 2:00 pm -> 2026-07-16 @ 10:00 pm
Severity: Moderate
Certainty: Likely
Urgency: Expected
Issued By: NWS Rapid City SD on 2026-07-15 @ 2:00 pm
Headline: Heat Advisory issued July 15 at 1:00PM 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 may cause heat illnesses.