It snowed overnight. Actually, it snowed from Sunday afternoon until about 4am today, so we have a bit of accumulation:
Our official weather station at O'Hare reported 53 cm of snow on the ground at 6 am, including yesterday's record 16 cm of new snow. (Midway Airport, on the Southwest Side, reported 46 cm for just this storm.) So far, 46 cm of snow has fallen since February 1st at O'Hare, about 3 times the normal amount, while we're having the coldest February in history, averaging -10.4°C.
And yet, because so many people work from home right now, and the snow fell over a two-day period rather than over just a few hours, the city hasn't completely shut down. It's not 2011, in other words.