As I did in Summer, I have scanned the tornado database back to 1950 in order to establish our biggest Fall tornado outbreaks. Here are some of the biggest outbreaks between the Autumn Equinox and Winter Solstice (roughly September 23-December 22).
November 15, 1955: 5 tornadoes struck central and southern Indiana, injuring 9 people.
November 26, 1965: 6 tornadoes struck mainly central Indiana, injuring 8 people. All of these tornadoes were ranked in the F2-F3 range.
October 24, 1967: This was the first of multiple significant Fall outbreaks that year. There were 9 tornadoes in this outbreak with 6 of them F2 or higher. 5 people were injured.
December 11, 1967: 7 tornadoes struck mainly southern Indiana, injuring 1 person.
September 26, 1976: Although there were only 3 tornadoes, two of them were deadly F3's. 2 people were killed and 12 were injured.
November 22, 1992: Perhaps the largest Fall tornado outbreak in state history, this outbreak produced 15 tornadoes, many of which occurred in a zone about 40 miles north and south of the I-70 corridor. 10 of the tornadoes were at least F2 with 5 of them F3. Although no fatalities occurred, 6 people were injured.
October 24, 2001: 9 tornadoes struck the state with the worst of the outbreak occurring in northern areas. 3 tornadoes were rated F2 with another rated F3. 2 people were killed and 19 were injured.
November 15, 2005: 4 tornadoes occurred with 3 of them striking southern Indiana. 2 of the tornadoes were rated F3 and a total of 32 people were injured.
October 18, 2007: 5 tornadoes struck northern and southern Indiana with 2 of them being EF3. The worst tornado, an EF3, struck Nappanee.
October 26, 2010: 13 tornadoes touched down as part of the historic "Octobomb" low pressure system. All tornadoes were EF0 or EF1 and no injuries were reported.
Special mention: On November 6, 2005, a F3 tornado struck the Evansville area, killing 25 people and injuring over 230. This was the only tornado to occur in the state on that day, but it was the deadliest single tornado here since 1965.
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