At 928 pm mdt, severe thunderstorms were located along a line extending from 3 miles northwest of aladdin to 3 miles northeast of sundance, moving east at 55 mph (radar indicated). Hazards include ping pong ball size hail and 60 mph wind gusts. 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, spearfish, sturgis, belle fourche, lead, sundance, deadwood, whitewood, nemo, saint onge, vale, central city, beulah, aladdin, brownsville, galena, tilford, cheyenne crossing, iron creek lake, bear butte state park and roughlock falls. this includes, interstate 90 in south dakota between mile markers 1 and 41. interstate 90 in wyoming between mile markers 188 and 207. hail threat, radar indicated max hail size, 1. 50 in wind threat, radar indicated max wind gust, 60 mph.