1. In 1977, a record-setting blizzard hit North Dakota on February 11th, dumping up to 20 inches of snow in some areas and causing widespread power outages.

2. On February 11, 1889, North Dakota became the 39th state in the Union, following Montana's admission earlier that same day.

3. In 1960, a B-52 bomber carrying two nuclear bombs crashed near Minot Air Force Base in North Dakota, causing widespread radioactive contamination. The incident, known as the "1960 North Carolina B-52 crash," remains one of the most significant nuclear accidents in US history.

4. On February 11, 1938, controversial North Dakota politician William Langer was impeached by the state Senate, following a series of scandals and ethical violations. Langer was later acquitted by the US Senate, and went on to serve multiple terms as North Dakota's governor.

5. In 1992, February 11 was declared "Izaak Walton League Day" in North Dakota, in honor of the organization's efforts to promote environmental conservation and outdoor recreation in the state.