⚠️ Severe Thunderstorm Warning – Haakon, SD; Jackson, SD; Meade, SD; Pennington, SD – Tuesday, August 11, 2026

Severe Thunderstorm Warning issued August 11 at 8:43PM MDT until August 11 at 9:45PM MDT by NWS Rapid City SD

Details

SVRUNR

The National Weather Service in Rapid City has issued a

* Severe Thunderstorm Warning for…
Northwestern Jackson County in southwestern South Dakota…
Southwestern Haakon County in west central South Dakota…
Southeastern Meade County in west central South Dakota…
Southeastern Pennington County in west central South Dakota…

* Until 945 PM MDT.

* At 843 PM MDT, a severe thunderstorm was located near Quinn, or 23
miles west of Philip, moving southeast at 30 mph.

HAZARD…70 mph wind gusts and ping pong ball size hail.

SOURCE…Radar indicated.

IMPACT…People and animals outdoors will be injured. Expect hail
damage to roofs, siding, windows, and vehicles. Expect
considerable tree damage. Wind damage is also likely to
mobile homes, roofs, and outbuildings.

* Locations impacted include…
Philip, Wall, Interior, Wasta, Quinn, Elm Springs, Grindstone,
Cactus Flat, Creighton, Cedar Pass, Cottonwood, Delta 9 Missile
Silo, Delta 1 Launch Facility, Minuteman Missile Visitors Center,
Pinnacles Ranger Station, Grindstone Butte and northeastern
Badlands National Park.

This includes Interstate 90 in South Dakota between Mile Markers 94
and 146.

Instructions

Anyone outdoors should move to shelter inside a well-built structure
and stay away from windows. This storm is capable of producing
widespread damaging winds and large hail.

Continuous cloud to ground lightning is occurring with this storm.
Lightning is one of nature’s leading killers. Remember, if you can
hear thunder, you are close enough to be struck by lightning.

This alert was automatically posted by SkyGuard, MWSC’s severe weather alerting system. Source: National Weather Service.