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Twin funnels in Elkhart, Indiana on April 11, 1965. A double tornado was also sighted near Toledo during this tornado outbreak. The second Palm Sunday tornado outbreak occurred on April 11, 1965 and involved 47 tornadoes (15 significant, 17 violent, 21 killers) hitting the Midwest. It was the second biggest outbreak on record. In the Midwest, 271 people were killed and 1, 500 injured (1, 200 in Indiana). It was the deadliest tornado outbreak in Indiana history with 137 people killed. The outbreak also made that week the second most active week in history with 51 significant and 21 violent tornadoes. A tornado is a violent, dangerous, rotating column of air that is in contact with both the surface of the earth and a cumulonimbus cloud or, in rare cases, the base of a cumulus cloud. They are often referred to as a twister or a cyclone, although the word cyclone is used in meteorology in a wider sense, to name any closed low pressure circulation. Tornadoes come in many shapes and sizes, but are typically in the form of a visible condensation funnel, whose narrow end touches the earth and is often encircled by a cloud of debris and dust. Most tornadoes have wind speeds less than 110 miles per hour (177 km/h), are approximately 250 feet (80 m) across, and travel a few miles (several kilometers) before dissipating. The most extreme tornadoes can attain wind speeds of more than 300 mph (480 km/h), stretch more than two miles (3 km) across, and stay on the ground for dozens of miles (more than 100 km).
