Updated at 12:30 p.m. Tuesday
From early to mid afternoon there will be very heavy snowfall in the Twin Cities with an inch per hour or more of snowfall. We will then see a break in the late afternoon and early evening before the light to moderate snow re-develops.
Heavy snow and sleet Tuesday; intermittent snow through Wednesday evening
Some of the heaviest snow will fall between noon and 3-4 p.m. in the Twin Cities with rates of up to 1 inch+ per hour. Thunder snow is also possible. Radar imagery at 12:30 p.m. showed a band of very heavy snow and occasional lightning.

Radar imagery at 12:30 p.m., also note lightning south of the Twin Cities near Northfield: thunderous snow will be possible and very heavy snowfall rates
RadarScope
Winter storm and ice storm warnings are in effect for many areas from central Minnesota to western Wisconsin. In east-central Minnesota, winter storm warnings are in effect until 6 p.m. Tuesday, then transition to winter weather advisories as snowfall becomes lighter to moderate through Wednesday.

Winter storm warnings, ice storm warnings and winter weather advisories Tuesday and Wednesday
NOAA via Key Weather
Snow has already accumulated in southwestern Minnesota and South Dakota. totals exceed a foot in some places with whiteout conditions and large drifts.

Total snowfall until 10 a.m. Tuesday so far
National Weather Service
Tuesday will bring treacherous travel conditions for southern Minnesota as periods of heavy snow, freezing rain and wintry mixing move through the region.

Precipitation forecast from Tuesday 10:00 a.m. to Thursday 6:00 a.m.
Weather in College of DuPage
Ice will be of particular concern in south-central and southeast Minnesota on Tuesday.
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Ice accumulation forecast Tuesday
National Weather Service
The heaviest snow will fall Tuesday through Tuesday evening.

Snowfall forecast for Tuesday through Tuesday evening
NOAA via Key Weather
Additional snow will fall Wednesday through Wednesday night for impressive totals, especially in southwestern Minnesota.

Snowfall forecast until Thursday noon
National Weather Service
In addition to snowfall, winds will be gusty Tuesday through Tuesday evening, particularly in southwestern Minnesota where wind gusts will sometimes exceed 40 mph.

Wind gust forecast Tuesday
NOAA via Key Weather
Colder behind the system Thursday into the weekend
Behind the storm system, temperatures are cooling, but we won’t see an arctic explosion like a few weeks ago. Temperatures will be slightly lower than normal on Thursday and this weekend.

High temperatures on Thursday
NOAA via Key Weather
Northern Minnesota will see a few below zero nights, but lows are expected to remain above zero in southern Minnesota.

Low temperatures expected from Thursday evening to Friday morning
NOAA via Key Weather