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The tornadoes were part of a larger system that wreaked havoc from Arkansas to Iowa and Illinois and moved into Tennessee by the evening. Nearly 60 preliminary tornado reports were sent to the ...
Illinois has had large tornado outbreaks in the past, including the tornado outbreak sequence of December 18–20, 1957 and the 1967 Oak Lawn tornado outbreak. Illinois is vulnerable to tornadoes with an average of 35 occurring annually, which puts much of the state at around 5 tornadoes per 10,000 square miles (30,000 km 2) annually. [1]
These storms produced numerous reports of hail and strong winds as well as three reported tornadoes, according to the Storm Prediction Center. If confirmed, the reported tornado that touched down ...
A tornado watch means weather conditions could spawn tornadoes within the watch area. People should stay aware of weather conditions and be prepared to act if watchers spot a tornado.
Tornado counts are considered preliminary until final publication in the database of the National Centers for Environmental Information. [1] Based on the 1991–2020 average, about 39 tornadoes are typically recorded across the United States during January, about 36 tornadoes are recorded in February, and about 80 tornadoes are recorded in ...
Illinois averages around 50 days of thunderstorm activity a year which put it somewhat above average for number of thunderstorm days for the United States. Illinois is vulnerable to tornadoes with an average of 54 occurring annually, which puts much of the state at around 9.7 tornadoes per 10,000 square miles (30,000 km 2) annually.
CHICAGO — National Weather Service officials said Thursday multiple tornadoes were confirmed in northeast Illinois but they still had survey teams out exploring twister touchdowns. Multiple ...
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]