1. Dakota territory name changed to North Dakota: On August 30, 1861, the US Congress proclaimed that the Dakota territory would now be divided into two separate territories - North Dakota and South Dakota.

2. The deadliest tornado in North Dakota history: On August 30, 1958, a tornado struck Fargo, killing 12 people and injuring 100 more. The tornado was rated as a category F5, the strongest rating for tornadoes, with winds over 260 miles per hour.

3. North Dakota state fair begins: August 30 is the opening day for the North Dakota State Fair, held annually in Minot. The fair features live music, carnival rides, food vendors, and agricultural exhibits.

4. First election of a female governor: On August 30, 1924, Langer, a former governor of the state, won the Republican primary with 56% of the vote, making her the first female to win a gubernatorial primary election in the history of the United States.

5. ND oil boom: On August 30, 1951, oil was discovered in the Tioga area of North Dakota, leading to a surge of oil production in the state. This led to the state becoming the second largest crude oil producing state in the country after Texas.