1. On February 13, 1978, Indiana experienced the second-largest snowstorm in the state's history, with up to 20 inches of snow falling in some areas. This massive storm caused widespread power outages and disrupted travel throughout Indiana.

2. February 13, 1861 was a significant day in Indiana's history, as it was the day that Governor Oliver P. Morton signed a resolution in support of President Abraham Lincoln's call for troops to defend the Union during the Civil War. Indiana ultimately contributed over 200,000 soldiers to the Union cause during the war.

3. On February 13, 1981, Indiana University basketball star Isiah Thomas scored a career-high 37 points as the Hoosiers defeated the Iowa Hawkeyes 82-72. Thomas went on to have a successful NBA career and was inducted into the Basketball Hall of Fame in 2000.

4. February 13, 1913 saw the birth of Margaret "Madge" Oberholtzer, an Indiana native who later became an advocate for social justice and women's rights. Oberholtzer was instrumental in the passage of the Civil Rights Act of 1964 and the Voting Rights Act of 1965.

5. On February 13, 1937, a massive explosion occurred at the Zinc Smelting Plant in New Haven, Indiana, killing nine workers and injuring dozens more. The explosion was one of the worst industrial accidents in Indiana's history and led to significant reforms in workplace safety regulations.