An additional foot or more of snow is possible from Wednesday until Friday night in the next few days in northeast South Dakota, central and south-central Minnesota and western Wisconsin.
Much of that area received significant snow last weekend.
The National Weather Service office in Chanhassen, Minn., has issued a winter storm warning for the area, effective noon Wednesday until 6 p.m. Friday. The area had been under a winter storm watch.
Willmar and west central Minnesota are in the warning area. Other cities threatened by the storm include Huron and Sisseton, S.D.; and Twin Cities, Alexandria, St. Cloud, Little Falls and Mankato, Minn.
A winter storm watch remains in effect for eastern North Dakota and northwestern Minnesota, effective Wednesday afternoon until Friday night. Eight to 18 inches of snow are expected in the area.
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Both storms also are expected to have increasing winds, according to the weather service.
Snow is expected to spread into western Minnesota Wednesday morning and into eastern Minnesota during the afternoon, with snow starting to accumulate in places such as Canby, Morris, St. James and Montevideo.
Accumulating snow should reach places such as St. Cloud, the Twin Cities and Faribault by Wednesday's rush hour.
The weather service says bouts of heavy snow will continue across the area into early Friday as the main storm system lifts out of the Oklahoma panhandle into Wisconsin.
Enough warm air may work into the storm to produce some freezing rain in south-central Minnesota, especially Wednesday night.
