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The city’s Office of Emergency Management and Communications issued a severe storm warning at about 7:15 p.m., which was expected to last until 9 p.m., while the National Weather Service ...
Parts of the Chicago area could see severe thunderstorms Tuesday evening, with hail, strong winds and tornadoes possible, according to the National Weather Service. Northwestern Illinois and the ...
In Canada, a severe thunderstorm is defined as having wind gusts of greater than 90 km/h (56 mph), hail with a diameter of greater than two centimetres (0.79 in), rainfall rates of greater than 50 millimetres (2.0 in) in one hour or greater than 75 millimetres (3.0 in) in three hours, or tornadoes. [14]
Severe thunderstorms are forecast to roll through the Midwest and ... In Chicago, the highest severe weather risk will be from 7 p.m. to 1 a.m. local time. ... make sure you have multiple ways to ...
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]
PDS severe thunderstorm watches are issued when there is a higher than normal risk of severe thunderstorm winds capable of major structural damage (in addition to large hail and perhaps a few isolated tornadoes), usually due to a strong and persistent derecho. These watches are very rare (accounting an average of only two each year), as the ...
Parts of Chicago were under a severe thunderstorm warning Wednesday morning as a storm system moved east through northern Illinois, according to weather officials. Northwestern Cook County was ...
Red are tornado warnings, yellow are severe thunderstorm warnings, green are flash flood warnings, and purple are special marine warnings. The storm started as a small thunderstorm cell in central Iowa and continued into Illinois , developing into a mesoscale convective system (MCS) while mostly below severe limits at the time.