Parts of the Iron Range and Arrowhead regions could see up to 9 inches of snow overnight Wednesday into Thursday morning, according to the National Weather Service.

The National Weather Service has issued a winter storm warning from 4 p.m. Wednesday, Nov. 20, until 6 a.m. Thursday, Nov. 21, for the northern two-thirds of St. Louis County as well as Lake and Cook counties.

A winter weather advisory is in effect until 6 a.m. Thursday, Nov. 21, for Carlton, Northern Aitkin and Southern St Louis counties.

A wintry mix of rain, snow and freezing rain will develop Wednesday afternoon across the Northland afternoon and transition into heavy, wet snow. The snow will become heavy at times overnight on the Iron Range with the possibility of snow falling up to 1 inch per hour.

Possible snow totals throughout the area:

  • Ely, 6-9 inches
  • Virginia, 5-8 inches
  • Grand Marais, 5-7 inches
  • International Falls and Big Falls, 4-6 inches
  • Silver Bay, 4-6 inches
  • Grand Rapids, 4-6 inches
  • Twin Ports, 1-3 inches
  • Carlton County, 1-3 inches

Snowfall totals closer to Lake Superior in Duluth are expected to be around 1-2 inches and 2-3 inches up on the hill.

The most uncertainty in snowfall amounts are from the Brainerd Lakes area to the Twin Ports. If colder air filters in quicker than currently forecasted, then totals will need to be increased, the Weather Service said.

The coming weather could mark the first "heavy snow" of the season in areas of the Northland, according to the Weather Service.

A wintry mix will also develop across northwest Wisconsin along sections of the South Shore of Lake Superior, according to an NWS situation report. The wintry mix will change to snow early Thursday.

The Wednesday night and Thursday morning commutes will be affected. The Weather Service reminds motorists to clear snow and ice from windows and lights, brake early, leave twice the amount of room for stopping, don't use cruise control and take it slow.

Roadways are expected to be slick and snow-covered.

Road conditions can be checked by calling 511 or at 511mn.org.