Light snow that fell across the Chicago area Monday evening produced only a few tenths of an inch, but more significantly it was the city’s first measurable snow in 22 days. Chicago’s last measurable snow occurred Dec. 18, with 0.5 inches. Yesterday’s snow was “warm advection snow,” which occurs in association with warmer air pushing into the area. Temperatures on Tuesday will climb into the mid-40s and remain in the low 40s on Wednesday. It will be windy as well. A vigorous low-pressure system over Iowa on Tuesday will generate strong winds across the Midwest. Locally, southern peak wind gusts of 35-50 mph are likely Tuesday, shifting to the west by evening, then gradually diminishing overnight. Somewhat colder weather Thursday and Friday will give way to rain Saturday.
