Grand Teton National Park, Wyoming
Regional Weather Alerts
| Alert: | Special Weather Statement |
| Area(s): | Central Laramie County; East Laramie County |
| Effective: | 2026-08-12 @ 3:47 pm -> 2026-08-12 @ 4:15 pm |
| Onset: | 2026-08-12 @ 3:47 pm |
| Severity: | Moderate |
| Certainty: | Observed |
| Urgency: | Expected |
| Issued By: | NWS Cheyenne WY on 2026-08-12 @ 3:47 pm |
| Headline: | Special Weather Statement issued August 12 at 2:47PM MDT by NWS Cheyenne WY |
| Description: |
At 247 PM MDT, Doppler radar was tracking a strong thunderstorm 7 miles southeast of Laramie County Fairgrounds at Archer, or 14 miles east of Cheyenne, moving east at 15 mph. HAZARD...Wind gusts of 50 to 55 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. Locations impacted include... Carpenter. |
| Alert: | Severe Thunderstorm Warning |
| Area(s): | Custer, SD; Pennington, SD; Weston, WY |
| Effective: | 2026-08-12 @ 3:38 pm -> 2026-08-12 @ 4:15 pm |
| Onset: | 2026-08-12 @ 3:38 pm -> 2026-08-12 @ 4:15 pm |
| Severity: | Severe |
| Certainty: | Observed |
| Urgency: | Immediate |
| Issued By: | NWS Rapid City SD on 2026-08-12 @ 3:38 pm |
| Headline: | Severe Thunderstorm Warning issued August 12 at 2:38PM MDT until August 12 at 3:15PM MDT by NWS Rapid City SD |
| Description: |
At 238 PM MDT, a severe thunderstorm was located over Elk Mountain Lookout, or 11 miles southeast of Newcastle, moving east at 40 mph. HAZARD...Tennis ball size hail and 60 mph wind gusts. SOURCE...Radar indicated. IMPACT...People and animals outdoors will be injured. Expect hail damage to roofs, siding, windows, and vehicles. Expect wind damage to roofs, siding, and trees. Locations impacted include... Newcastle, Custer, Hill City, Pringle, Argyle, Jewel Cave National Monument, Elk Mountain Lookout, Bear Mountain Lookout, Medicine Mountain, Crazy Horse Memorial, Sylvan Lake, Black Elk Peak and Palmer Gulch Resort. |
| 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: | 2026-08-12 @ 3:33 pm -> 2026-08-12 @ 10:00 pm |
| Onset: | 2026-08-12 @ 3:33 pm -> 2026-08-12 @ 10:00 pm |
| Severity: | Severe |
| Certainty: | Possible |
| Urgency: | Future |
| Issued By: | NWS Cheyenne WY on 2026-08-12 @ 3:33 pm |
| Headline: | Severe Thunderstorm Watch issued August 12 at 2:33PM MDT until August 12 at 9:00PM MDT by NWS Cheyenne WY |
| Description: |
THE NATIONAL WEATHER SERVICE HAS ISSUED SEVERE THUNDERSTORM WATCH 578 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: | Severe Thunderstorm Watch |
| Area(s): | Bennett, SD; Butte, SD; Custer, SD; Fall River, SD; Haakon, SD; Harding, SD; Jackson, SD; Lawrence, SD; Meade, SD; Oglala Lakota, SD; Pennington, SD; Perkins, SD; Ziebach, SD; Crook, WY; Weston, WY |
| Effective: | 2026-08-12 @ 2:06 pm -> 2026-08-12 @ 9:00 pm |
| Onset: | 2026-08-12 @ 2:06 pm -> 2026-08-12 @ 9:00 pm |
| Severity: | Severe |
| Certainty: | Possible |
| Urgency: | Future |
| Issued By: | NWS Rapid City SD on 2026-08-12 @ 2:06 pm |
| Headline: | Severe Thunderstorm Watch issued August 12 at 1:06PM MDT until August 12 at 8:00PM MDT by NWS Rapid City SD |
| Description: |
THE NATIONAL WEATHER SERVICE HAS ISSUED SEVERE THUNDERSTORM WATCH 576 IN EFFECT UNTIL 8 PM MDT THIS EVENING FOR THE FOLLOWING AREAS IN SOUTH DAKOTA THIS WATCH INCLUDES 13 COUNTIES IN NORTHWEST SOUTH DAKOTA BUTTE HARDING PERKINS IN SOUTHWEST SOUTH DAKOTA BENNETT CUSTER FALL RIVER JACKSON OGLALA LAKOTA IN WEST CENTRAL SOUTH DAKOTA HAAKON LAWRENCE MEADE PENNINGTON ZIEBACH IN WYOMING THIS WATCH INCLUDES 2 COUNTIES IN NORTHEAST WYOMING CROOK WESTON THIS INCLUDES THE CITIES OF ALLEN, BILLSBURG, BISON, BUCKHORN, BUFFALO, CLARETON, CUSTER, DEADWOOD, DOWNTOWN BELLE FOURCHE, DOWNTOWN NEWCASTLE, DUPREE, EDGEMONT, FAITH, FOUR CORNERS, HERMOSA, HILL CITY, HOT SPRINGS, KADOKA, KIRLEY, KYLE, LACREEK WILDLIFE REFUGE, LEAD, LEMMON, MARTIN, MILESVILLE, MOORCROFT, MORRISEY, OGLALA, PHILIP, PINE RIDGE, RAPID CITY, ROCHELLE, SPEARFISH, STURGIS, SUNDANCE, TUTHILL, UNION CENTER, UPTON, AND WALL. THIS INCLUDES THE TRIBAL LANDS OF THE CHEYENNE RIVER RESERVATION AND THE PINE RIDGE RESERVATION. |