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. |