Last year we had snowfalls on April 14 (5.4" official at O'Hare) and April 27 (2.5" at O'Hare). So whatever happened yesterday, and whatever comes tomorrow, is no big thing. It's still early...
Despite the snow and overnight temps, garlic mustard and Siberian squill are doing fine. I saw numerous uprooted garlic mustard plants on the trail last time I walked McClaughrey Springs - wish the squill could be dealt with in similar fashion.
Trying to channel Greta Thunberg, I have many days I don't touch the car. Lake Katherine half a mile away, Arrowhead Lake 1-1/2 miles, then Paddock about 2-1/4 miles distant, all can be reached without the infernal combustion engine. Some of the pictures in the first block below are from Arrowhead, and the night-time pictures in the second block from Lake Katherine.