1. Colorado became a state: August 14, 1876 was the day Colorado officially became a state, becoming the 38th state in the union. It had previously been a territory since the Kansas-Nebraska Act of 1854.

2. The Eisenhower Tunnel opened: August 14, 1973 was the day the Eisenhower Tunnel opened to traffic. Located in the Rocky Mountains, it is the highest vehicular tunnel in the world and an engineering marvel.

3. A record-breaking hail storm: On August 14, 2019, a hail storm hit the Denver metro area, causing an estimated $1.8 billion in damage. The storm produced baseball-sized hailstones that pummeled homes, cars, and businesses.

4. The first Denver County Fair: August 14, 2011 was the inaugural day of the first Denver County Fair. The event celebrates the spirit of the county fair with a focus on urban agriculture, local food, and sustainable living.

5. The Rocky Flats nuclear weapons plant raid: On August 14, 1984, FBI agents raided the Rocky Flats nuclear weapons plant near Denver. The raid was conducted after reports of environmental crimes and safety violations at the facility, sparking an ongoing controversy over nuclear weapons production and the environment.