We all know the weather in these parts can turn on a dime. Snap your fingers and there's a brand new sky overhead. Over just four days the Twin Cities will make up for a 1-foot snowfall deficit: 2-4 inches fell early Saturday; another 5-8 inches will fall from late afternoon into tonight.

No mix, no rain — cold enough for all snow this time, and it may come down at the rate of 1-2 inches an hour between 6 p.m. and 2 a.m.

Never tell a Minnesotan not to drive, but I'd suggest getting errands done this morning, maybe leave for home by 3 or 4 p.m. to get out in front of the snow bands. I'll write you a note.

Heavier snow bands set up south and east of MSP, some 10- to 12-inch totals possible from Mankato and Rochester to Northfield and Red Wing. But the storm is moving quickly; most of the accumulating snow will be over by dawn Tuesday.

A nippy New Year's Eve is shaping up but I still don't see anything polar screaming south of the border. Seasonably cold; we've just lost track of "average." It was the warmest autumn on record — but winter is about to make up for lost time.