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An observation from the National Weather Service Chicago, Illinois at Lewis University Airport, taken at around 4z (11 p.m. CDT), revealed MUCAPE values of 1556 J/kg, as well as extreme storm-relative helicity values of 644 m 2 /s 2 at 0–1 kilometers and 857 m 2 /s 2 at 0–3 kilometers, where storm-relative values of helicity above 150 m 2 ...
A tree uprooted by a weak tornado in Chicago on July 14. The Storm Prediction Center outlined a slight (2/5) risk convective outlook at 13Z, outflow from previous mesoscale convective systems had manifested as outflow boundaries over Iowa and Illinois, which were expected to be conducive to the formation of serial mesoscale convective systems that evening. [21]
As the storms swept the Chicago area late Monday, employees at a suburban weather service office had to pass coverage duties to a Michigan post for five minutes. The agency reported wind speeds in ...
February made a frigid statement Wednesday after a stormy night across portions of northern Illinois, with thunderstorms, reports of tornadoes and drastic temperature drops. Before the weather ...
A radar-confirmed tornado swept through suburban Chicago, damaging homes, toppling trees, knocking out power and causing some injuries, officials said. At least four injuries were reported in ...
The 23 inches (58.4 cm) inches of snow that fell on Chicago for 29 hours from the morning of January 26, 1967 is a record for a single storm. [ 1 ] [ 3 ] [ 8 ] [ 10 ] The 19.8 inches (50.3 cm) that fell on January 26–27 was the greatest amount of snow for a 24-hour period, later surpassed by Groundhog Day Blizzard of 2011 with 20.0 inches (50 ...
The Chicago blizzard of 1979 was a major blizzard that affected northern Illinois and northwest Indiana on January 13–14, 1979. It was one of the largest Chicago snowstorms in history at the time, with 21 inches (53 cm) of snowfall in the two-day period. [ 1 ]
The 1990 Plainfield tornado was a devastating tornado that occurred on the afternoon of Tuesday, August 28, 1990. The violent tornado killed 29 people and injured 353. [1] It is the only F5/EF5 rated tornado ever officially recorded in August in the United States (unofficially the 1883 Rochester, Minnesota cyclone is considered an F5), and the only F5 tornado to strike the Chicago area.