1. 1978 Blizzard: On January 15, 1978, one of the most severe blizzards in Tennessee’s history hit the state. The storm was notable for its high winds, heavy snowfall, and sub-zero temperatures which caused widespread damage and disruption across the state.

2. Martin Luther King Jr. Day: January 15, 1986, was the first time Martin Luther King Jr. Day was celebrated as a federal holiday. The holiday honors the life and legacy of the civil rights leader who was born in Atlanta, Georgia, but also had strong ties to Tennessee.

3. Ku Klux Klan Bombing: On January 15, 1961, the Ku Klux Klan bombed a synagogue in Chattanooga, Tennessee. The blast caused extensive damage to the building, but fortunately, there were no injuries.

4. Tennessee's First Governor: On January 15, 1796, John Sevier, one of Tennessee’s founding fathers, was sworn in as the state’s first governor. Sevier played an important role in Tennessee’s early history and helped establish the state government.

5. Historic Preservation Efforts: On January 15, 1990, the Tennessee Historical Commission issued a report that recommended the preservation of 36 historic sites across the state. The report was a significant step in the effort to protect and preserve Tennessee's rich cultural heritage.