1975 Canton, Illinois, tornado
The Canton, Illinois Tornadoes of 1975 were destructive tornadoes which occurred as part of a significant severe thunderstorm outbreak concentrated from eastern Iowa across northern and central Illinois on the afternoon and evening of July 23, 1975.
Outbreak
Widespread significantly severe damaging wind occurred in many areas across eastern Iowa and the northwestern third of Illinois. Many corn fields were flattened, trees were downed, and light structural damage occurred. Power was cut to thousands across the western and northwestern suburbs of Chicago. Around 5:05 pm, a rope-like tornado with multiple funnels was sighted on a farm southwest of Toulon, Illinois, following a left-curving path, before lifting south of Toulon, leaving crop damage. It was rated F0 with a path length of and width of. A wind gust of was measured near Peoria and a funnel cloud was spotted at Groveland. Lightning also damaged several houses and buildings. One woman was killed when venturing outside to close her car windows and a six-story International Harvester warehouse was ignited into a large fire in Canton, Illinois.Canton tornadoes
The supercell thunderstorm first showed evidence in the damage survey near Bushnell. On several farms, broad convergent and cyclonic crop damage exhibited evidence of the parent tornadocyclone. Trees were uprooted and structural damage varied with windows broken and buildings partially unroofed. A funnel cloud was spotted at 4:01 pm about south of Prairie City.First tornado
The first tornado of a complex combination of tornado family and extreme downbursts touched down at 4:30 p.m. about west of the small city of Canton and immediately grew to very large size in agrarian central Fulton County. It continued meandering rural areas with an average movement of easterly roughly near Illinois Route 9 for before ending about southeast of Fiatt. A grain elevator was leveled and blown about away. Total damages were around $250,000. A University of Chicago team headed by Ted Fujita surveyed the damage path as wide at times and suction spot crop damage indicated a multiple vortex tornado.Canton tornado
Before that tornado lifted, a second tornado touched down to the left of the first tornado at 4:45 p.m. on the east side of Fiatt, and it too in conjunction with intense downburst winds proceeded in a meandering path roughly eastward roughly along Route 9. There was no break in the damage because of the proximity of the tornadoes and the accompanying exceptionally intense downburst activity.This tornado roared into Canton with a damage path wide, essentially destroying or heavily damaging the southern half of the town. It devastated much of the downtown area, destroying or damaging 127 businesses concentrated within a five block swath. Many of these buildings were completely destroyed and others were so severely damaged to require razing. The tornado caused heavy residential losses with about 100 frame houses destroyed and an additional 300 damaged; 50 trailers were destroyed and another 100 were damaged. Two people were killed at Horton's Mobile Home Manor on the eastern side of town. Sixty-nine people were injured, of which 14 required hospitalization and 45 were treated and released. Straight-line winds from downbursts inflicted less intense damage across the remainder of town. Total damages amounted to around $25 million. Power was not restored to some areas for a week. The National Guard was deployed, and the damage was so immense and overwhelming that the city was declared a federal disaster area. All stores except for those selling food were forced to close, most perishable food required trashing, and the town was immediately closed to non-residents not on official business.
Farms also suffered substantial damage to crops and buildings with agricultural losses over $3 million. The high-end F3 tornado continued for approximately another to about north of Banner for a total path length of. Total tornado area was with a very high destruction potential index - integrating [tornado tornado intensity and damage|intensity and damage|intensity], path length, and width—value of 150.