1. On February 16, 1887, the Dakota Territory was officially divided into North Dakota and South Dakota, becoming the 39th and 40th states in the United States.

2. On February 16, 1929, a large blizzard hit South Dakota, causing widespread devastation and killing more than 50 people. The storm became known as the "Great White Hurricane" and is still one of the deadliest blizzards in the state's history.

3. On February 16, 1954, the South Dakota State Capitol building in Pierre caught fire and was severely damaged. The fire started in the attic and burned for several hours before it was finally extinguished. The building underwent extensive renovations and was reopened in 1962.

4. On February 16, 1978, a massive snowstorm hit South Dakota, dumping up to 20 feet of snow in some areas. The storm caused widespread damage and disruption, particularly in the Black Hills region, and is still remembered as one of the state's worst blizzards.

5. On February 16, 2003, a large tornado touched down in west-central South Dakota, causing significant damage to homes and businesses in the area. The tornado was part of a larger outbreak that affected several states in the region and resulted in multiple fatalities.