Winter Storm Warnings
December 18 2025
* WHAT...Mixed precipitation expected. Total snow accumulations up
to two inches and ice accumulations around a light glaze. Winds
gusting as high as 45 mph.
* WHERE...Crow Wing, Aitkin, Pine, Cass, Itasca, Carlton, South and
Central St. Louis, and Southern Lake Counties. This includes the
Tribal Lands of the Fond du Lac Band, the Mille Lacs Band, Big
Sandy Lake, Hinckley, Lena Lake and, East Lake areas and the Bois
Forte Band, Deer Creek and, Lake Vermilion areas.
* WHEN...From 9 AM this morning to midnight CST tonight.
* IMPACTS...Roads, and especially bridges and overpasses, will
likely become slick and hazardous. Plan on slippery road
conditions. The hazardous conditions could impact the Thursday
evening commute. Gusty winds could bring down tree branches.
* WHAT...Lake effect snow expected. Total snow accumulations between
1 and 3 inches except between 4 and 6 inches for northern Iron
County and ice accumulations around a light glaze. Winds gusting
as high as 35 mph.
* WHERE...Ashland, Bayfield, and Iron Counties. This includes the
Tribal Lands of the Bad River Reservation, the northwestern area
of the Lac du Flambeau Band and the Red Cliff Band. Other
locations including Madeline Island and the Apostle Islands
National Lakeshore.
* WHEN...From noon today to 6 AM CST Friday.
* IMPACTS...Plan on slippery road conditions. The hazardous
conditions could impact the Thursday evening commute.
* WHAT...Mixed precipitation expected. Total snow accumulations up
to two inches and ice accumulations around a light glaze. Winds
gusting as high as 40 mph.
* WHERE...Burnett, Douglas, Sawyer, and Washburn Counties. This
includes the Tribal Lands of the St. Croix Band in Burnett County
and the Lac Courte Oreilles Reservation.
* WHEN...From noon today to midnight CST tonight.
* IMPACTS...Roads, and especially bridges and overpasses, will
likely become slick and hazardous. Plan on slippery road
conditions. The hazardous conditions could impact the Thursday
evening commute.
* WHAT...Snow. Additional snow accumulations between 2 and 4 inches.
Winds gusting as high as 40 mph.
* WHERE...Koochiching and North St. Louis Counties. This includes
the Tribal Lands of the Bois Forte Band, Nett Lake area. Other
locations including Voyageurs National Park. This also includes
the Boundary Waters western area.
* WHEN...Until midnight CST tonight.
* IMPACTS...Plan on slippery road conditions. The hazardous
conditions could impact the Thursday morning and evening commutes.
* ADDITIONAL DETAILS...The combination of new snow and strong winds
may cause near-whiteout conditions at times this afternoon and
early this evening.
* WHAT...Mixed precipitation. Additional snow accumulations between
1 and 3 inches and ice accumulations around a light glaze. Winds
gusting as high as 55 mph.
* WHERE...North Lake and Cook Counties. This includes the Tribal
Lands of the Grand Portage Reservation. This also includes the
Boundary Waters eastern and central area.
* WHEN...Until 4 AM CST Friday.
* IMPACTS...Plan on slippery road conditions. The hazardous
conditions could impact the Thursday morning and evening commutes.
Strong winds could cause tree damage.
* ADDITIONAL DETAILS...The combination of new snow and strong winds
may cause near-whiteout conditions at times this afternoon and
early this evening.
* WHAT...North winds 15 to 25 mph with gusts up to 60 mph possible.
* WHERE...Southern Cook and Southern Lake Counties. This includes
the Tribal Lands of the Grand Portage Reservation.
* WHEN...From this evening through late tonight.
* IMPACTS...Damaging winds could blow down trees and power lines.
Widespread power outages are possible. Travel could be difficult,
especially for high profile vehicles.
* WHAT...For the Small Craft Advisory, southwest winds 10 to 20
kt with gusts up to 25 kt and waves 3 to 6 ft. For the Storm
Warning, north winds 20 to 30 kt with gusts up to 50 kt and
waves 3 to 6 ft expected.
* WHERE...Grand Portage to Grand Marais MN and Grand Marais to
Taconite Harbor MN.
* WHEN...For the Small Craft Advisory, until 2 PM CST this
afternoon. For the Storm Warning, from 3 PM this afternoon to
4 AM CST Friday.
* IMPACTS...Storm force winds and hazardous waves will capsize or
damage vessels and reduce visibility.
* WHAT...For the Small Craft Advisory, southwest winds 10 to 15
kt with gusts up to 25 kt. For the Gale Warning, northwest
winds 15 to 25 kt with gusts up to 35 kt and waves up to 3 ft
expected. For the Heavy Freezing Spray Warning, heavy freezing
spray at a rate of 2 cm per hour or greater expected, and may
rapidly accumulate on vessels.
* WHERE...Chequamegon Bay-Bayfield to Oak Point WI.
* WHEN...For the Small Craft Advisory, until 2 PM CST this
afternoon. For the Gale Warning, from 2 PM this afternoon to 4
AM CST Friday. For the Heavy Freezing Spray Warning, from 6 PM
this evening to 4 AM CST Friday.
* IMPACTS...Operating a vessel in heavy freezing spray is
hazardous. Freezing spray may render mechanical and electronic
components inoperative. Rapid ice accretion on decks and
superstructures may result in a catastrophic loss of
stability. Strong winds will cause hazardous waves which could
capsize or damage vessels and reduce visibility.
* WHAT...For the Small Craft Advisory, southwest winds 15 to 20
kt with gusts up to 30 kt and waves 1 to 4 ft. For the Gale
Warning, northwest winds 20 to 30 kt with gusts up to 40 kt
and waves 6 to 11 ft expected. For the Heavy Freezing Spray
Warning, heavy freezing spray at a rate of 2 cm per hour or
greater expected, and may rapidly accumulate on vessels.
* WHERE...Oak Point to Saxon Harbor WI and Outer Apostle Islands
Beyond 5 NM from Mainland.
* WHEN...For the Small Craft Advisory, until 2 PM CST this
afternoon. For the Gale Warning, from 2 PM this afternoon to 4
AM CST Friday. For the Heavy Freezing Spray Warning, from 6 PM
this evening to 4 AM CST Friday.
* IMPACTS...Operating a vessel in heavy freezing spray is
hazardous. Freezing spray may render mechanical and electronic
components inoperative. Rapid ice accretion on decks and
superstructures may result in a catastrophic loss of stability.
Strong winds will cause hazardous waves which could capsize or
damage vessels and reduce visibility.
* WHAT...For the Small Craft Advisory, southwest winds 15 to 25
kt with gusts up to 30 kt and waves 2 to 5 ft. For the Gale
Warning, northwest winds 20 to 30 kt with gusts up to 40 kt
and waves 6 to 9 ft expected. For the Heavy Freezing Spray
Warning, heavy freezing spray at a rate of 2 cm per hour or
greater expected, and may rapidly accumulate on vessels.
* WHERE...Duluth MN to Port Wing WI, Port Wing to Sand Island WI
and Sand Island to Bayfield WI.
* WHEN...For the Small Craft Advisory, until 2 PM CST this
afternoon. For the Gale Warning, from 2 PM this afternoon to 4
AM CST Friday. For the Heavy Freezing Spray Warning, from 6 PM
this evening to 4 AM CST Friday.
* IMPACTS...Operating a vessel in heavy freezing spray is
hazardous. Freezing spray may render mechanical and electronic
components inoperative. Rapid ice accretion on decks and
superstructures may result in a catastrophic loss of
stability. Strong winds will cause hazardous waves which could
capsize or damage vessels and reduce visibility.