Chicago-area residents could see rapidly developing dense fog on Tuesday night, which could become more widespread overnight.
According to the National Weather Service, a dense layer of marine fog is expected to spread inland “quite quickly” Tuesday evening, impacting numerous suburbs and the city of Chicago itself.
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WATCH HEREA dense fog advisory has been issued for Lake County and northern Cook County in Illinois, and will remain in effect until 10 a.m.
The fog is already forming over Lake Michigan Tuesday afternoon, and after sunset it’s expected the fog will rapidly spread into parts of Lake and Cook counties in Illinois, along with Lake County in northwest Indiana.
Visibility is expected to be slashed to less than one-quarter of a mile, and the fog is expected to become more widespread late Tuesday night and into Wednesday morning.
A similar event occurred in the city and suburbs on Tuesday morning, blanketing the skyline in a dense layer of fog that sharply reduced visibility and even cooled temperatures.
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Elsewhere in the area, isolated thunderstorms could be in the forecast for parts of the Chicago area, with the greatest coverage expected in northwest Indiana, according to forecast models.
Those storms could produce frequent lightning and localized downpours, according to forecast models.
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