2024 Seymour, Indiana tornado

The 2024 Seymour, Indiana tornado was a devastating EF4 tornado which tracked through southeastern Indiana in the early afternoon of Wednesday, April 10, 2024. Part of the 2024 Super Outbreak, the largest tornado outbreak in recorded history, the Seymour tornado was the deadliest and second-costliest ever recorded in the state of Indiana, causing 41 deaths and $276.1 million USD in damage. An additional 491 people were injured by the tornado, and hundreds of livestock were killed. The tornado remained on the ground for 42 minutes, leaving a path 34.25 miles long and 410 yards wide at its peak, making it the longest-tracked tornado in the state of Indiana since the Henryville tornado on March 2, 2012, which remained on the ground for 45.79 miles.

The Seymour tornado was produced by a long-lived and particularly intense supercell which produced several other strong to violent tornadoes, including a large and destructive EF5-rated tornado which caused five deaths in the town of Medora at around 12:45 pm EDT. After the Seymour tornado dissipated, its parent supercell produced a destructive EF3 tornado which caused considerable damage in the towns of Millville and New Miami, Ohio at around 2:50 pm. The final intense tornado produced by the Seymour tornado's parent supercell touched down at 5:17 pm and caused high-end EF4 damage near Sycamore, Ohio, remaining on the ground for nearly an hour and leaving behind a 51-mile path.