1. In 1909, the State of Montana adopted the state flag that we see today. The flag features a blue background with the state seal in the center and "Montana" written in gold above the seal and a ribbon with the state motto, "Oro y Plata", below the seal.

2. The Montana Tech campus in Butte, Montana was struck by a magnitude 3.8 earthquake on April 27, 1923. This was likely due to underground mining activity causing seismic activity.

3. Renowned artist Charles Marion Russell was born on April 27, 1864, in St. Louis, Missouri. He later moved to Montana and became famous for his paintings and sculptures of Western life and landscapes.

4. On April 27, 1979, Montana's Glacier National Park introduced its grizzly bear management plan, aimed at protecting the state's threatened grizzly bear population. The plan included measures such as food storage rules and limiting human-bear interactions.

5. In 1906, a major fire broke out in the city of Butte, Montana, on April 27, destroying much of the city's business district. The fire started in a dry goods store and quickly spread, fueled by high winds and wooden buildings. There were no fatalities, but the damage was estimated to be around $10 million at the time.