1. Magnetic Recording Technology Patented - On May 28, 1946, the magnetic recording technology that revolutionized the music industry and paved the way for the development of the modern hard disk drive was patented by the Minnesota-based company, Minnesota Mining and Manufacturing Company, known today as 3M.

2. Minneapolis' First Tornado - On May 28, 1878, Minneapolis experienced its first recorded tornado. The twister ripped through downtown, destroying several buildings and homes. It caused several injuries and one death, and it is estimated that the damage done would total $200,000 in today's currency.

3. First Improvised Explosive Device Attack in the United States - On May 28, 1970, a bomb went off at the Army recruiting station in New Brighton, Minnesota. It was the first improvised explosive device attack carried out in the country during the Vietnam War era. No one was injured in the explosion.

4. Minnesota's First Angel Food Bakery Store Opens - On May 28, 1946, Minnesota's first Angel Food Bakery store opened on Seventh Street in downtown St. Paul. The chain started in Michigan in 1938, and it became a popular destination for Midwest families seeking affordable baked goods.

5. F5 Tornado Hits Tracy, Minnesota - On May 28, 1968, an F5 tornado struck the town of Tracy, Minnesota. The twister destroyed over 80% of the town, killed nine people, and injured another 150. It remains as the deadliest tornado ever recorded in the state of Minnesota.