Cheyenne, Wyoming
Regional Weather Alerts
| Alert: | Flood Advisory |
| Area(s): | Hot Springs, WY |
| Effective: | 2026-07-22 @ 6:53 pm -> 2026-07-22 @ 7:03 pm |
| Onset: | 2026-07-22 @ 6:53 pm -> 2026-07-22 @ 7:00 pm |
| Severity: | Minor |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Riverton WY on 2026-07-22 @ 6:53 pm |
| Headline: | Flood Advisory issued July 22 at 5:53PM MDT until July 22 at 6:00PM MDT by NWS Riverton WY |
| Description: |
The Flood Advisory will expire at 6 PM MDT this evening for a portion of central Wyoming, including the following area, Hot Springs. The heavy rain has ended. Arroyo and small stream flooding is no longer expected to pose a threat. Please continue to heed remaining road closures. A Flood Watch remains in effect until 600 AM MDT Thursday for portions of central, north central, northwest, south central, southwest, and west central Wyoming... |
| Alert: | Flood Advisory |
| Area(s): | Teton, WY |
| Effective: | 2026-07-22 @ 6:46 pm -> 2026-07-22 @ 9:45 pm |
| Onset: | 2026-07-22 @ 6:46 pm -> 2026-07-22 @ 9:45 pm |
| Severity: | Minor |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Riverton WY on 2026-07-22 @ 6:46 pm |
| Headline: | Flood Advisory issued July 22 at 5:46PM MDT until July 22 at 8:45PM MDT by NWS Riverton WY |
| Description: |
* WHAT...Flooding caused by excessive rainfall is expected. * WHERE...Southeastern Teton County in northwestern Wyoming... * WHEN...Until 845 PM MDT. * IMPACTS...Minor flooding in low-lying and poor drainage areas. Rises in small streams and normally dry arroyos. Overflowing poor drainage areas. * ADDITIONAL DETAILS... - At 546 PM MDT, Doppler radar indicated heavy rain due to thunderstorms. Minor flooding is ongoing or expected to begin shortly in the advisory area. Between 1 and 1.5 inches of rain have fallen. - This includes the following streams and drainages... Big Cow Creek, Bacon Creek, Clear Creek, Tepee Creek, Bear Cabin Creek, Dry Fork Clear Creek and Gros Ventre River. Additional rainfall amounts of 0.5 to 1 inch are expected over the area. This additional rain will result in minor flooding. - Some locations that will experience flooding include... Mainly rural areas of Southeastern Teton County. - http://www.weather.gov/safety/flood |
| Alert: | Flood Advisory |
| Area(s): | Fremont, WY |
| Effective: | 2026-07-22 @ 6:25 pm -> 2026-07-22 @ 7:30 pm |
| Onset: | 2026-07-22 @ 6:25 pm -> 2026-07-22 @ 7:30 pm |
| Severity: | Minor |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Riverton WY on 2026-07-22 @ 6:25 pm |
| Headline: | Flood Advisory issued July 22 at 5:25PM MDT until July 22 at 6:30PM MDT by NWS Riverton WY |
| Description: |
* WHAT...Flooding caused by excessive rainfall continues. * WHERE...Southeastern Fremont County in central Wyoming... * WHEN...Until 630 PM MDT. * IMPACTS...Minor flooding in low-lying and poor drainage areas. * ADDITIONAL DETAILS... - At 521 PM MDT, Doppler radar indicated heavy rain due to thunderstorms. Another round of thunderstorms with rainfall rates of 1 to 1.5 inches will move over this area. Minor flooding is ongoing or expected to begin shortly in the advisory area. Between 1.7 and 2.5 inches of rain has already fallen from earlier storms. - Some locations that will experience flooding include... Mainly rural areas of Southeastern Fremont County near Sweetwater Station. - http://www.weather.gov/safety/flood |
| Alert: | Flood Advisory |
| Area(s): | Fremont, WY |
| Effective: | 2026-07-22 @ 6:20 pm -> 2026-07-22 @ 7:30 pm |
| Onset: | 2026-07-22 @ 6:20 pm -> 2026-07-22 @ 7:30 pm |
| Severity: | Minor |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Riverton WY on 2026-07-22 @ 6:20 pm |
| Headline: | Flood Advisory issued July 22 at 5:20PM MDT until July 22 at 6:30PM MDT by NWS Riverton WY |
| Description: |
* WHAT...Flooding caused by excessive rainfall continues. * WHERE...Southwestern Fremont County in central Wyoming... * WHEN...Until 630 PM MDT. * IMPACTS...Minor flooding in low-lying and poor drainage areas. Rises in small streams and normally dry arroyos. * ADDITIONAL DETAILS... - At 517 PM MDT, Showers have redeveloped over this area that received heavy rain due to thunderstorms. Minor flooding is ongoing or expected to begin shortly in the advisory area. Between 1.5 and 2.5 inches of rain have fallen. - This includes the following streams and drainages... South Fork Squaw Creek, Squaw Creek, Middle Popo Agie River, Roaring Fork Creek, Tayo Creek, Sheep Creek, Deep Creek and Shoshone Creek. - Some locations that will experience flooding include... Frye Lake, Sinks Canyon State Park and Sinks Canyon Campground. - http://www.weather.gov/safety/flood |
| Alert: | Flood Advisory |
| Area(s): | Natrona, WY; Washakie, WY |
| Effective: | 2026-07-22 @ 5:52 pm -> 2026-07-22 @ 8:45 pm |
| Onset: | 2026-07-22 @ 5:52 pm -> 2026-07-22 @ 8:45 pm |
| Severity: | Minor |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Riverton WY on 2026-07-22 @ 5:52 pm |
| Headline: | Flood Advisory issued July 22 at 4:52PM MDT until July 22 at 7:45PM MDT by NWS Riverton WY |
| Description: |
* WHAT...Flooding caused by excessive rainfall is expected. * WHERE...Northwestern Natrona County in central Wyoming... Southern Washakie County in central Wyoming... * WHEN...Until 745 PM MDT. * IMPACTS...Minor flooding in low-lying and poor drainage areas. Rises in small streams and normally dry arroyos. Overflowing poor drainage areas. * ADDITIONAL DETAILS... - At 452 PM MDT, Doppler radar indicated heavy rain due to thunderstorms. Minor flooding is ongoing or expected to begin shortly in the advisory area. Between 1 and 2 inches of rain have fallen. - This includes the following streams and drainages... Nowood River, Sawmill Creek, Bear Creek, Lost Creek, Lone Tree Creek, Little Deep Creek, Deep Creek, Trout Creek and Split Rock Creek. Additional rainfall amounts of 0.5 to 1.5 inches are expected over the area. This additional rain will result in minor flooding. - Some locations that will experience flooding include... Mainly rural areas of Northwestern Natrona and Southern Washakie Counties. - http://www.weather.gov/safety/flood |
| Alert: | Flood Advisory |
| Area(s): | Fremont, WY |
| Effective: | 2026-07-22 @ 4:47 pm -> 2026-07-22 @ 7:15 pm |
| Onset: | 2026-07-22 @ 4:47 pm -> 2026-07-22 @ 7:15 pm |
| Severity: | Minor |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Riverton WY on 2026-07-22 @ 4:47 pm |
| Headline: | Flood Advisory issued July 22 at 3:47PM MDT until July 22 at 6:15PM MDT by NWS Riverton WY |
| Description: |
* WHAT...Flooding caused by excessive rainfall continues. * WHERE...Southeastern Fremont County in central Wyoming... * WHEN...Until 615 PM MDT. * IMPACTS...Minor flooding in low-lying and poor drainage areas. * ADDITIONAL DETAILS... - At 347 PM MDT, Doppler radar indicated heavy rain due to thunderstorms. Minor flooding is ongoing or expected to begin shortly in the advisory area. Between 2 and 3 inches of rain have fallen. - Additional rainfall amounts of 0.5 to 1.5 inches are expected over the area. This additional rain will result in minor flooding. - Some locations that will experience flooding include... Mainly rural areas of Southeastern Fremont County. - http://www.weather.gov/safety/flood |
| Alert: | Flood Advisory |
| Area(s): | Park, WY; Teton, WY |
| Effective: | 2026-07-22 @ 4:21 pm -> 2026-07-22 @ 7:15 pm |
| Onset: | 2026-07-22 @ 4:21 pm -> 2026-07-22 @ 7:15 pm |
| Severity: | Minor |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Riverton WY on 2026-07-22 @ 4:21 pm |
| Headline: | Flood Advisory issued July 22 at 3:21PM MDT until July 22 at 6:15PM MDT by NWS Riverton WY |
| Description: |
* WHAT...Flooding caused by excessive rainfall is expected. * WHERE...Northwestern Park County in central Wyoming... North Central Teton County in northwestern Wyoming... * WHEN...Until 615 PM MDT. * IMPACTS...Minor flooding in low-lying and poor drainage areas. Overflowing poor drainage areas. Ponding of water in urban or other areas is occurring or is imminent. * ADDITIONAL DETAILS... - At 321 PM MDT, Doppler radar indicated heavy rain due to thunderstorms. Minor flooding is ongoing or expected to begin shortly in the advisory area. Between 1 and 2 inches of rain have fallen. - This includes the following streams and drainages... Canyon Creek, Sour Creek, Secret Valley Creek, Alum Creek, Virginia Cascade, Observation Peak Creek, Gibbon Geyser Basin, Mary Mountain Creek, Cougar Creek, Paintpot Hill Creek, Gibbon River, Cascade Creek, Yellowstone River, Elk Antler Creek, Nez Perce Creek, Gibson Geyser Creek, Otter Creek, Cowan Creek, Spruce Creek, Firehole River, Solfatara Creek, National Park Mountain Creek, Duck Creek, Trout Creek, Madison River and Madison Valley Drain. Additional rainfall amounts of 0.5 to 2 inches are expected over the area. This additional rain will result in minor flooding. - Some locations that will experience flooding include... Madison, Canyon, Virginia Cascade, Norris Junction, Gibbons Falls, Lower Falls and Harlequin Lake. - http://www.weather.gov/safety/flood |
| Alert: | Flood Watch |
| Area(s): | Red Lodge Foothills; Paradise Valley; Livingston Area; Beartooth Foothills; Absaroka/Beartooth Mountains; Southern Big Horn; Southeastern Carbon; Bighorn Canyon; Northern Carbon; Pryor/Northern Bighorn Mountains; Northeast Bighorn Mountains; Sheridan Foothills |
| Effective: | 2026-07-22 @ 4:16 pm -> 2026-07-23 @ 3:00 am |
| Onset: | 2026-07-22 @ 4:16 pm -> 2026-07-23 @ 3:00 am |
| Severity: | Severe |
| Certainty: | Possible |
| Urgency: | Future |
| Issued By: | NWS Billings MT on 2026-07-22 @ 4:16 pm |
| Headline: | Flood Watch issued July 22 at 3:16PM MDT until July 23 at 2:00AM MDT by NWS Billings MT |
| Description: |
The combination of a moist and unstable air mass with slow moving thunderstorms capable of producing very heavy rain, will bring a risk of flash flooding late this afternoon and evening. * WHAT...Flash flooding caused by excessive rainfall is possible. * WHERE...Portions of south central Montana, including the following areas, Absaroka/Beartooth Mountains, Beartooth Foothills, Bighorn Canyon, Livingston Area, Northern Carbon, Paradise Valley, Pryor/Northern Bighorn Mountains, Red Lodge Foothills, Southeastern Carbon and Southern Big Horn and north central Wyoming, including the following areas, Northeast Bighorn Mountains and Sheridan Foothills. * WHEN...Until 2 AM MDT Thursday. * IMPACTS...Excessive runoff may result in flooding of rivers, streams, and other low-lying and flood-prone locations. Recent burn scars, including the Robertson Draw and East Side south of Red Lodge, and the Elk along the eastern slopes of the Bighorn Mountains, are at risk of experiencing flash flooding and debris flows. * ADDITIONAL DETAILS... - Thunderstorms capable of producing very heavy rain are expected late this afternoon and evening. These storms may cause localized flash flooding. - http://www.weather.gov/safety/flood |
| Alert: | Flood Watch |
| Area(s): | Yellowstone National Park; Absaroka Mountains; Cody Foothills; North Bighorn Basin; Southwest Bighorn Basin; Southeast Bighorn Basin; Owl Creek and Bridger Mountains; Bighorn Mountains West; Bighorn Mountains Southeast; Northeast Johnson County; Southeast Johnson County; Teton and Gros Ventre Mountains; Jackson Hole; Wind River Mountains West; Wind River Mountains East; Upper Wind River Basin; Wind River Basin; Lander Foothills; Green Mountains and Rattlesnake Range; Natrona County Lower Elevations; Casper Mountain; Star Valley; Salt River and Wyoming Ranges; Upper Green River Basin Foothills; Upper Green River Basin; South Lincoln County; Rock Springs and Green River; Flaming Gorge; East Sweetwater County |
| Effective: | 2026-07-22 @ 1:54 pm -> 2026-07-23 @ 7:00 am |
| Onset: | 2026-07-22 @ 1:54 pm -> 2026-07-23 @ 7:00 am |
| Severity: | Severe |
| Certainty: | Possible |
| Urgency: | Future |
| Issued By: | NWS Riverton WY on 2026-07-22 @ 1:54 pm |
| Headline: | Flood Watch issued July 22 at 12:54PM MDT until July 23 at 6:00AM MDT by NWS Riverton WY |
| Description: |
* WHAT...Flooding caused by excessive rainfall continues to be possible. * WHERE...Portions of central, north central, northwest, south central, southwest, and west central Wyoming, including the following areas, in central Wyoming, Casper Mountain, Green Mountains and Rattlesnake Range, Lander Foothills, Natrona County Lower Elevations, Owl Creek and Bridger Mountains, Southwest Bighorn Basin, Upper Wind River Basin, Wind River Basin, Wind River Mountains East and Wind River Mountains West. In north central Wyoming, Bighorn Mountains Southeast, Bighorn Mountains West, Northeast Johnson County, Southeast Bighorn Basin and Southeast Johnson County. In northwest Wyoming, Absaroka Mountains, Cody Foothills, Jackson Hole, North Bighorn Basin, Teton and Gros Ventre Mountains and Yellowstone National Park. In south central Wyoming, East Sweetwater County, Flaming Gorge and Rock Springs and Green River. In southwest Wyoming, South Lincoln County. In west central Wyoming, Salt River and Wyoming Ranges, Star Valley, Upper Green River Basin and Upper Green River Basin Foothills. * WHEN...Until late Wednesday night. The most likely period of possible flooding is between 3pm Wednesday through 4am MDT Thursday. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. * ADDITIONAL DETAILS... - Slow moving showers and thunderstorms and abnormally high moisture in the air can bring locally heavy rainfall that could lead to flooding. - http://www.weather.gov/safety/flood |
| Alert: | Flood Watch |
| Area(s): | Cache Valley/Utah Portion; Wasatch Back; Bear Lake and Bear River Valley; Wasatch Mountains I-80 North; Wasatch Mountains South of I-80; Western Uinta Mountains; Wasatch Plateau/Book Cliffs; Western Uinta Basin; Eastern Juab/Millard Counties; Central Mountains; Sanpete Valley; Sevier Valley; Castle Country; San Rafael Swell; Southwest Utah; Lower Washington County; Zion National Park; Southern Mountains; Upper Sevier River Valleys; Bryce Canyon Country; South Central Utah; Capitol Reef National Park and Vicinity; Western Canyonlands; Glen Canyon Recreation Area/Lake Powell; Southwest Wyoming |
| Effective: | 2026-07-22 @ 8:50 am -> 2026-07-23 @ 12:00 am |
| Onset: | 2026-07-22 @ 1:00 pm -> 2026-07-23 @ 1:00 am |
| Severity: | Severe |
| Certainty: | Possible |
| Urgency: | Future |
| Issued By: | NWS Salt Lake City UT on 2026-07-22 @ 8:50 am |
| Headline: | Flood Watch issued July 22 at 7:50AM MDT until July 23 at 12:00AM MDT by NWS Salt Lake City UT |
| Description: |
* WHAT...Flash flooding caused by excessive rainfall is possible. * WHERE...Portions of Utah, including the following areas, Bear Lake and Bear River Valley, Bryce Canyon Country, Cache Valley/Utah Portion, Capitol Reef National Park and Vicinity, Castle Country, Central Mountains, Eastern Juab/Millard Counties, Glen Canyon Recreation Area/Lake Powell, Lower Washington County, San Rafael Swell, Sanpete Valley, Sevier Valley, South Central Utah, Southern Mountains, Southwest Utah, Upper Sevier River Valleys, Wasatch Back, Wasatch Mountains I-80 North, Wasatch Mountains South of I-80, Wasatch Plateau/Book Cliffs, Western Canyonlands, Western Uinta Basin, Western Uinta Mountains and Zion National Park and Wyoming, including the following area, Southwest Wyoming. This also includes recent burn scars such as Cottonwood, Silver King, Monroe Canyon, France Canyon, and Forsyth. * WHEN...From noon MDT today through this evening. * IMPACTS...Excessive rainfall may result in flooding of slot canyons, normally dry washes, slick rock areas, rivers, creeks, streams, recent burn scars including Forsyth, France Canyon, Cottonwood, Silver King, and Monroe Canyon, and other low-lying and flood-prone locations. Flooding may occur in poor drainage and urban areas. * ADDITIONAL DETAILS... - http://www.weather.gov/safety/flood |
| Alert: | Flood Watch |
| Area(s): | Converse County Lower Elevations; Niobrara County; North Laramie Range; Ferris/Seminoe/Shirley Mountains; Shirley Basin; Central Laramie Range and Southwest Platte County; East Platte County; Goshen County; Central Carbon County; North Snowy Range Foothills; Southwest Carbon County; Upper North Platte River Basin; Laramie Valley; South Laramie Range; South Laramie Range Foothills; Central Laramie County; East Laramie County |
| Effective: | 2026-07-22 @ 8:44 am -> 2026-07-23 @ 1:00 am |
| Onset: | 2026-07-22 @ 1:00 pm -> 2026-07-24 @ 1:00 am |
| Severity: | Severe |
| Certainty: | Possible |
| Urgency: | Future |
| Issued By: | NWS Cheyenne WY on 2026-07-22 @ 8:44 am |
| Headline: | Flood Watch issued July 22 at 7:44AM MDT until July 24 at 12:00AM MDT by NWS Cheyenne WY |
| Description: |
* WHAT...Flooding caused by excessive rainfall is possible. * WHERE...Portions of east central, south central, and southeast Wyoming, including the following areas, in east central Wyoming, Converse County Lower Elevations and Niobrara County. In south central Wyoming, Central Carbon County, Ferris/Seminoe/Shirley Mountains, North Snowy Range Foothills, Shirley Basin, Southwest Carbon County and Upper North Platte River Basin. In southeast Wyoming, Central Laramie County, Central Laramie Range and Southwest Platte County, East Laramie County, East Platte County, Goshen County, Laramie Valley, North Laramie Range, South Laramie Range and South Laramie Range Foothills. * WHEN...From noon MDT today through Thursday evening. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. Flooding may occur in poor drainage and urban areas. Area creeks and streams are running high and could flood with more heavy rain. * ADDITIONAL DETAILS... - Torrential Rainfall combined with training Thunderstorms may lead to rises in creeks, flood low lying areas, and temporarily overwhelm drainage areas due to excessive run off from Hydrophobic soils. - http://www.weather.gov/safety/flood |