This evening would be a good time to make the announcement. It is supposed to get down to 12 degrees in Ferguson tonight with a high tomorrow below freezing.
It is going to get back above freezing on Wednesday. So if they don't do it today then they will have to wait until the next cold front.
It is no fun rioting when it is freezing outside. You have trouble busing rioters in from out of town and it is hard to carry a flat screen TV when you are wearing a heavy coat.