1. In 1899, the first state convention of the South Dakota Federation of Women's Clubs was held in Sioux Falls. This organization was dedicated to promoting education, health, and social welfare in the state.

2. On April 16, 1947, a massive explosion occurred at the Black Hills Ordnance Depot near Igloo, South Dakota. The blast, which was heard up to 50 miles away, destroyed several buildings and killed five people.

3. In 1951, the University of South Dakota dedicated its new medical school building in Vermillion. The state-of-the-art facility was the first of its kind in the region and helped to train generations of doctors and nurses.

4. On this day in 1963, the South Dakota House of Representatives passed a resolution officially designating the coyote as the state animal. The vote was controversial, as many farmers saw the animal as a nuisance and a threat to their livestock.

5. In 2007, a blizzard hit Western South Dakota, causing widespread damage and power outages. The storm, which dumped up to three feet of snow in some areas, was one of the worst in the state's history and resulted in several deaths and injuries.