What was the worst tornado in the worlds history?
It was unusually hot in the Midwest on April 11, 1965 — Palm Sunday. Temperatures climbed into the 80s. Storms began to develop as a strong low-pressure system sliding through Wisconsin drew warm, humid air into southern Michigan. Cooler and drier air high in the atmosphere mixed with moist, warm air near the surface. The conditions were ripe for tornadoes. Other single tornadoes have proved deadlier, but the outbreak 40 years ago this date was the worst in U.S. history, according to NOAA, parent organization of the National Weather Service. By the end of the day, 250 people would die and 1,500 would be injured. The day’s first twister touched down about 1 p.m. local time in Clinton County, Iowa. By late afternoon, the storm system began to intensify over Indiana and spawned several killer tornadoes. Indiana’s first tornado touched down at round 5:30 p.m., in Koontz Lake. An F4 on the Fujita scale (which runs from 1 to 5), it killed ten people and injured 180. Another tornado struck W
