At 211 PM MDT, Doppler radar was tracking a strong thunderstorm 4 miles west of Dalton Lake, or 10 miles south of Sturgis, moving southeast at 20 mph. HAZARD...Wind gusts up to 40 mph and pea size hail. SOURCE...Radar indicated. IMPACT...Gusty winds could knock down tree limbs and blow around unsecured objects. Minor hail damage to vegetation is possible. Locations impacted include... Nemo and Dalton Lake. This includes Interstate 90 in South Dakota near Mile Marker 44.

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