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Severe Thunderstorm Warning


New Event Expired

Start Time

Fri 06/11/2021 01:12 AM EDT

End Time

Fri 06/11/2021 02:15 AM EDT



Storm Location

6 mi NE of Porcupine Butte, SD

Storm Motion

Moving ENE at 63 mph


High impact


Locations Affected

Potato Creek, SD ∙ Long Valley, SD ∙ Hisle, SD ∙ Norris, SD ∙ Kyle, SD ∙ Kadoka, SD ∙ Cottonwood, SD ∙ Corn Creek, SD ∙ Conata, SD ∙ Eagle Nest Butte, SD

Full Alert Message

BULLETIN - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Warning National Weather Service Rapid City SD 1112 PM MDT Thu Jun 10 2021 The National Weather Service in Rapid City has issued a * Severe Thunderstorm Warning for... Southeastern Haakon County in west central South Dakota... Northeastern Oglala Lakota County in southwestern South Dakota... Western Mellette County in south central South Dakota... Jackson County in southwestern South Dakota... Northern Bennett County in southwestern South Dakota... Southeastern Pennington County in west central South Dakota... * Until 1215 AM MDT/115 AM CDT/. * At 1111 PM MDT/1211 AM CDT/, severe thunderstorms were located along a line extending from near Delta 9 Missile Silo to 5 miles northwest of Potato Creek to 5 miles east of Porcupine Butte Housing, moving east at 65 mph. HAZARD...70 mph wind gusts and nickel size hail. SOURCE...Radar indicated. IMPACT...Expect considerable tree damage. Damage is likely to mobile homes, roofs, and outbuildings. * Severe thunderstorms will be near... Potato Creek and Delta 9 Missile Silo around 1115 PM MDT. Interior and Delta 1 Launch Facility around 1120 PM MDT. Allen, Cottonwood and Yellow Bear Canyon around 1125 PM MDT. Other locations in the path of these severe thunderstorms include Philip, Hisle, Intersection of Highway 73 and White River, Kadoka, Eagle Nest Butte, Long Valley, Nowlin and Belvidere. This includes Interstate 90 in South Dakota between Mile Markers 116 and 174. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. && LAT...LON 4319 10232 4349 10233 4392 10228 4422 10117 4417 10116 4416 10106 4414 10104 4400 10105 4399 10107 4386 10106 4384 10102 4385 10099 4383 10097 4342 10103 TIME...MOT...LOC 0511Z 248DEG 55KT 4391 10214 4358 10209 4321 10222 HAIL...0.88IN WIND...70MPH