Sioux Falls, South Dakota
Regional Weather Alerts
| 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): | 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. |