The welcome mat is out at several Twin Cities charities for anybody who needs shelter as the largest snowstorm of the winter season arrives this weekend and with it a cold snap that will hang around well into next week.
Blizzard warnings covered eight counties in southwestern Minnesota on Friday morning. Winter storm warnings were in place across southeastern Minnesota where 4 to 7 inches of snow was expected to fall by Saturday morning. School across the area was canceled Friday.
Two to 4 inches of snow was predicted in an area stretching from Redwood Falls and Mankato through the Twin Cities and north and east to Duluth and Hayward, Wis., where the National Weather Service issued a Winter Weather Advisory.
Dry air mixing with the precipitation may keep overall snow totals down, but brutal cold coming with the storm is a near certainty. A windchill warning for readings dipping to near minus 40 degrees was in effect through noon Monday from St. Cloud west to Morris and from Willmar north to Staples.
"We don't generally miss that part of the storm," said Pete Boulay with the Minnesota State Climatology Office, referring to the dangerously low windchill readings accompanying subzero temperatures.
Arctic air pushing in from the north will keep the mercury below zero in the Twin Cities and most of Minnesota for more than 60 consecutive hours starting Saturday night, the National Weather Service said. Temperatures might break into positive territory briefly Tuesday afternoon before sinking back, the Weather Service said.
"The coldest windchills will occur Sunday and Monday mornings" when it will feel as cold as 30 to 40 below, the Weather Service said.
Frostbite can set in after as few as 10 minutes in those conditions, the Weather Service warned.