Cheyenne, Wyoming

Regional Weather Alerts


     

Alert: Severe Thunderstorm Warning
Area(s): Carbon, WY
Effective: 2026-08-29 @ 2:09 pm -> 2026-08-29 @ 2:30 pm
Onset: 2026-08-29 @ 2:09 pm -> 2026-08-29 @ 2:30 pm
Severity: Severe
Certainty: Observed
Urgency: Immediate
Issued By: NWS Cheyenne WY on 2026-08-29 @ 2:09 pm
Headline: Severe Thunderstorm Warning issued August 29 at 1:09PM MDT until August 29 at 1:30PM MDT by NWS Cheyenne WY
Description: At 108 PM MDT, a severe thunderstorm was located 11 miles south of
Seminoe State Park, or 23 miles northeast of Rawlins, moving
northeast at 55 mph.

HAZARD...70 mph wind gusts.

SOURCE...Automated sensors.

IMPACT...Expect considerable tree damage. Damage is likely to mobile
homes, roofs, and outbuildings.

Locations impacted include...
Dugway Campground, Fort Steele Historic Site, and Seminoe State Park.

Alert: Flood Watch
Area(s): Yellowstone National Park; Absaroka Mountains; Teton and Gros Ventre Mountains; Jackson Hole; Wind River Mountains West; Star Valley; Salt River and Wyoming Ranges
Effective: 2026-08-29 @ 2:07 pm -> 2026-08-30 @ 9:00 am
Onset: 2026-08-29 @ 2:07 pm -> 2026-08-30 @ 1:00 pm
Severity: Severe
Certainty: Possible
Urgency: Future
Issued By: NWS Riverton WY on 2026-08-29 @ 2:07 pm
Headline: Flood Watch issued August 29 at 1:07PM MDT until August 30 at 12:00PM MDT by NWS Riverton WY
Description: * WHAT...Flooding caused by excessive rainfall continues to be
possible.

* WHERE...Portions of central, northwest, and west central Wyoming,
including the following areas, in central Wyoming, Wind River
Mountains West. In northwest Wyoming, Absaroka Mountains, Jackson
Hole, Teton and Gros Ventre Mountains and Yellowstone National
Park. In west central Wyoming, Salt River and Wyoming Ranges and
Star Valley.

* WHEN...Through Sunday morning.

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

* ADDITIONAL DETAILS...
- Increased moisture from the Pacific will move across northwest
Wyoming through the weekend, bringing an extended chance for
showers and thunderstorms. The increased moisture will have the
potential to produce locally heavy rainfall, providing excessive
runoff in flood-prone and low-lying areas.
- http://www.weather.gov/safety/flood

Alert: Special Weather Statement
Area(s): Ferris/Seminoe/Shirley Mountains; Central Carbon County; North Snowy Range Foothills; Sierra Madre Range; Upper North Platte River Basin; Snowy Range; Laramie Valley
Effective: 2026-08-29 @ 1:31 pm -> 2026-08-29 @ 2:30 pm
Onset: 2026-08-29 @ 1:31 pm
Severity: Moderate
Certainty: Observed
Urgency: Expected
Issued By: NWS Cheyenne WY on 2026-08-29 @ 1:31 pm
Headline: Special Weather Statement issued August 29 at 12:31PM MDT by NWS Cheyenne WY
Description: At 1229 PM MDT, Doppler radar was tracking showers and thunderstorms
from near Creston Junction to near Silver Lake Campground. Movement
was northeast at 40 mph.

HAZARD...Wind gusts of 50 to 55 mph.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects.

Locations impacted include...
Rawlins, Saratoga, Hanna, Encampment, Sinclair, Elk Mountain,
Riverside, McFadden, Rambler, Teton Reservoir, Shively Field,
Separation Lake, Rob Roy Reservoir, Arlington, French Creek
Campground, Pike Pole Campground, Turpin Reservoir, Bow River
Campground, Lincoln Park Campground, and Snowy Range Pass.