At 438 pm cdt, severe thunderstorms were located along a line extending from 6 miles west of dimock to 8 miles southeast of freeman to near wakonda, moving northeast at 85 mph. these are destructive storms for alexandria, lake vermillion state park, sioux falls, lennox, larchwood, and surrounding areas (radar indicated). Hazards include 80 mph wind gusts. Flying debris will be dangerous to those caught without shelter. mobile homes will be heavily damaged. expect considerable damage to roofs, windows, and vehicles. extensive tree damage and power outages are likely. severe thunderstorms will be near, beresford, parker, centerville, marion, hurley and dolton around 445 pm cdt. canistota, alexandria, chancellor, monroe and davis around 450 pm cdt. lake vermillion state recreation area, lennox, wall lake, worthing, fulton and farmer around 455 pm cdt. canton, tea, hartford, humboldt, montrose, spencer in mccook county and ellis around 500 pm cdt. sioux falls, harrisburg, crooks, colton, canova, fedora, roswell, lyons, lake alvin state recreation area and renner around 505 pm cdt. brandon, baltic, larchwood, howard, lester, chester, vilas, rowena, corson and dell rapids around 510 pm cdt. valley springs, hills, beaver creek, trent, wentworth, carthage, winfred and palisades state park around 515 pm cdt. luverne, garretson, colman, egan and sherman around 520 pm cdt. Other locations impacted by these severe thunderstorms include steen.