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This tornado may have actually included two or more touchdowns, implying that the single event was two or more tornadoes. Three or more funnels and erratic shifts in the damage path were reported to have occurred, suggesting that the long-tracked tornado was in fact a tornado family. įour homes and several barns were completely leveled while two people received minor injuries. Neither Grazulis (1991) nor Storm Data lists this tornado, suggesting that it was either weaker than F2 in intensity or never existed. Tornado was F3 according to an unofficial publication. Two children and a woman were injured in their trailer, as were four men sheltering inside a barn.
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Tornado destroyed eight homes, severely damaged seven others, and shattered glass windows as it hit Humphreys. Tornado extensively damaged or leveled homes, barns, and other outbuildings. īrief touchdown failed to produce evidence of damage. Tornado may have formed from the same thunderstorm that struck Cameron, but the time does not suggest this. Tornado completely leveled all buildings except the house at one farm site and destroyed one wall of the house. Condensation funnel was reportedly absent. Tornado caused some damage in south Cameron. ĭust-laden tornado was seen but caused no damage. Tornado was observed on the ground but apparently caused no damage. CDT/2100 UTC, more than 12 tornadoes had already been spawned from the storm system.
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CDT covering the northern half of Illinois plus southern Wisconsin, eastern Iowa, and western Indiana. Weather Bureau office issued a tornado watch at 1:50 p.m. As conditions became more favorable for tornadoes and supercells began developing in the Chicago area, the regional U.S. Meanwhile, a persistent mesolow feature near Joliet, Illinois, helped to maintain backed low-level winds from the south. As a low-pressure area within an extratropical cyclone approached the area, temperatures rose into the low to mid 70s☏ with dew points rising into the 60s☏, an upper-level jet reaching 120-knot (220 km/h), and increasing low-level vertical shear. A warm front-part of a very deep shortwave trough-passed through Illinois all day and by afternoon moved north of the state. Following a foggy morning with temperatures in the middle 50s° F, temperatures rose rapidly in the afternoon as low geopotential heights approached from the southwest. Meteorological synopsis Outbreak death toll StateĪpril 21, 1967, was a warm Friday afternoon in northern Illinois. Seven others were killed at the same intersection when the roof of a grocery store collapsed on them. At the nearby intersection of Southwest Highway and 95th Street, an additional 16 people were killed, trapped in rush hour traffic. Fortunately, none were killed or injured. The tornado destroyed the gym at Oak Lawn Community High School, the locker room in which the students had been evacuated. It dissipated at Rainbow Beach on Lake Michigan. The path of this tornado was 16 miles long, and at times 200 yards wide. The F-4/5 tornado that swept through Palos Heights, Oak Lawn, Hometown, Evergreen Park, and skipped through Chicago's Southside, killed 33 people. The F-4/5 tornado that struck the Belvidere- Lake Zurich area was responsible for one of the highest tornado-related death tolls in a single school building ever recorded when it struck Belvidere High School as multiple school buses were being loaded.