Cheyenne, Wyoming

Regional Weather Alerts


     

Alert: Flood Watch
Area(s): Absaroka Mountains; Cody Foothills; North Bighorn Basin; Southwest Bighorn Basin; Owl Creek and Bridger Mountains
Effective: 2026-07-17 @ 2:55 am -> 2026-07-17 @ 11:00 pm
Onset: 2026-07-17 @ 1:00 pm -> 2026-07-17 @ 11:00 pm
Severity: Severe
Certainty: Possible
Urgency: Future
Issued By: NWS Riverton WY on 2026-07-17 @ 2:55 am
Headline: Flood Watch issued July 17 at 1:55AM MDT until July 17 at 10:00PM MDT by NWS Riverton WY
Description: * WHAT...Flooding caused by excessive rainfall is possible.

* WHERE...Portions of central and northwest Wyoming, including the
following areas, in central Wyoming, Owl Creek and Bridger
Mountains and Southwest Bighorn Basin. In northwest Wyoming,
Absaroka Mountains, Cody Foothills and North Bighorn Basin.

* WHEN...From noon MDT today through this evening.

* IMPACTS...Excessive runoff may result in flooding of rivers,
creeks, streams, and other low-lying and flood-prone locations.

* ADDITIONAL DETAILS...
- Heavy rainfall from slow moving showers and thunderstorms may
bring local flooding.
- 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: 2026-07-17 @ 2:49 am -> 2026-07-17 @ 6:00 pm
Onset: 2026-07-17 @ 2:49 am -> 2026-07-19 @ 10:00 pm
Severity: Moderate
Certainty: Likely
Urgency: Expected
Issued By: NWS Rapid City SD on 2026-07-17 @ 2:49 am
Headline: Heat Advisory issued July 17 at 1:49AM MDT until July 19 at 9:00PM MDT by NWS Rapid City SD
Description: * WHAT...Peak afternoon heat index values of 95 to 105.

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

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

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