1975 Omaha tornado outbreak
Three people were killed and 133 reported injured. One of the fatalities was thrown by the tornado from her home to a backyard four or five houses away. Debris was found miles away. Over 4,000 buildings were damaged and 287 were destroyed. In terms of damage, it was the costliest tornado in American history to that date, with damages costing at least $250 million to $300 million (around $1.7 billion in 2015 dollars), and insurance costs estimated at up to $1.1 billion (in 1975). It was the third-costliest tornado, behind the Oklahoma City-area F5 tornado on May 3, 1999, and the Wichita Falls, Texas, tornadoes on April 10, 1979, until the Joplin, Missouri EF5 tornado on May 22, 2011. It is now currently the seventh-costliest tornado on record.
May–June 1917 tornado outbreak sequence
After hitting Westervelt, the tornado weakened and probably lifted before reforming and re-intensifying over southern Moultrie County. The new tornado then passed directly through the northern half of Mattoon, causing F4 damage and "near-total destruction" in its path. It destroyed 496 homes, damaged 284, and killed at least 53 people in Mattoon; in the hardest-hit areas, few walls were left standing and only small debris remained. Total damage in Mattoon reached $1.2 million. Between Mattoon and Charleston, a distance of , all farms registered damage and often lost buildings. Entering Charleston, the tornado produced less severe damage than in Mattoon, perhaps due to better construction, but at least 220 homes were still destroyed, 265 badly damaged, 38 people killed, and $780,000 damage caused. The tornado then continued beyond Charleston, causing two final deaths at Embarrass before lifting, though weather officials in 1917 believed that the tornado had continued into Indiana.