Cheyenne, Wyoming

Regional Weather Alerts


     

Alert: Special Weather Statement
Area(s): Natrona County Lower Elevations
Effective: 2026-08-15 @ 3:08 pm -> 2026-08-15 @ 3:45 pm
Onset: 2026-08-15 @ 3:08 pm
Severity: Moderate
Certainty: Observed
Urgency: Expected
Issued By: NWS Riverton WY on 2026-08-15 @ 3:08 pm
Headline: Special Weather Statement issued August 15 at 2:08PM MDT by NWS Riverton WY
Description: At 207 PM MDT, Doppler radar was tracking a strong thunderstorm near
Goldeneye Reservoir, which is 18 miles northwest of Casper, moving
east at 15 mph.

HAZARD...Wind gusts up to 40 mph and half inch hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects. Minor hail damage to vegetation is
possible.

This storm will remain over mainly rural areas of central Natrona
County, including the following locations... Casper-Natrona County
International Airport.

Alert: Severe Thunderstorm Watch
Area(s): Banner, NE; Box Butte, NE; Cheyenne, NE; Dawes, NE; Kimball, NE; Morrill, NE; Scotts Bluff, NE; Sioux, NE; Goshen, WY; Laramie, WY; Niobrara, WY; Platte, WY
Effective: 2026-08-15 @ 3:04 pm -> 2026-08-15 @ 10:00 pm
Onset: 2026-08-15 @ 3:05 pm -> 2026-08-15 @ 10:00 pm
Severity: Severe
Certainty: Possible
Urgency: Future
Issued By: NWS Cheyenne WY on 2026-08-15 @ 3:04 pm
Headline: Severe Thunderstorm Watch issued August 15 at 2:04PM MDT until August 15 at 9:00PM MDT by NWS Cheyenne WY
Description: THE NATIONAL WEATHER SERVICE HAS ISSUED SEVERE THUNDERSTORM WATCH
584 IN EFFECT UNTIL 9 PM MDT THIS EVENING FOR THE FOLLOWING AREAS

IN NEBRASKA THIS WATCH INCLUDES 8 COUNTIES

IN PANHANDLE NEBRASKA

BANNER BOX BUTTE CHEYENNE
DAWES KIMBALL MORRILL
SCOTTS BLUFF SIOUX

IN WYOMING THIS WATCH INCLUDES 4 COUNTIES

IN EAST CENTRAL WYOMING

NIOBRARA

IN SOUTHEAST WYOMING

GOSHEN LARAMIE PLATTE

THIS INCLUDES THE CITIES OF AGATE, ALLIANCE, ANGORA, BAYARD,
BORDEAUX, BRIDGEPORT, BROWNSON, CHADRON, CHADRON ST PARK,
CHEYENNE, GERING, GUERNSEY, HARRISBURG, HARRISON, HEMINGFORD,
KIMBALL, LUSK, REDBIRD, REDINGTON, SCOTTSBLUFF, SIDNEY,
TORRINGTON, AND WHEATLAND.

Alert: Special Weather Statement
Area(s): Teton and Gros Ventre Mountains; Jackson Hole; Star Valley; Salt River and Wyoming Ranges
Effective: 2026-08-15 @ 2:46 pm -> 2026-08-15 @ 3:15 pm
Onset: 2026-08-15 @ 2:46 pm
Severity: Moderate
Certainty: Observed
Urgency: Expected
Issued By: NWS Riverton WY on 2026-08-15 @ 2:46 pm
Headline: Special Weather Statement issued August 15 at 1:46PM MDT by NWS Riverton WY
Description: At 146 PM MDT, Doppler radar was tracking a strong thunderstorm over
Alpine, moving east at 15 mph.

HAZARD...Wind gusts up to 40 mph and pea size hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects. Minor hail damage to vegetation is
possible.

This strong thunderstorm will be near...
Alpine around 150 PM MDT.

Alert: Flood Watch
Area(s): Dawes; Box Butte; Scotts Bluff; Banner; Morrill; Kimball; Cheyenne; North Sioux; South Sioux; Niobrara County; East Platte County; Goshen County; South Laramie Range Foothills; Central Laramie County; East Laramie County
Effective: 2026-08-15 @ 1:23 pm -> 2026-08-15 @ 11:00 pm
Onset: 2026-08-15 @ 3:00 pm -> 2026-08-15 @ 11:00 pm
Severity: Severe
Certainty: Possible
Urgency: Future
Issued By: NWS Cheyenne WY on 2026-08-15 @ 1:23 pm
Headline: Flood Watch issued August 15 at 12:23PM MDT until August 15 at 10:00PM MDT by NWS Cheyenne WY
Description: * WHAT...Localized flash flooding caused by excessive thunderstorm
rainfall is possible.

* WHERE...Portions of panhandle Nebraska, including the following
areas, Banner County, Box Butte County, Cheyenne County, Dawes
County, Kimball County, Morrill County, Northern Sioux County,
Scotts Bluff County and Southern Sioux County and Wyoming,
including the following areas, Central Laramie County, East
Laramie County, East Platte County, Goshen County, Niobrara County
and South Laramie Range Foothills.

* WHEN...Until 10 PM MDT this 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.

* ADDITIONAL DETAILS...
- Strong, slow moving thunderstorms with locally heavy rainfall
will be possible this afternoon and evening. Heavy rainfall
may affect areas that received heavy rainfall and localized
flooding yesterday.
- http://www.weather.gov/safety/flood