Winter Storm Warnings
December 18 2025
* WHAT...A combination of light snow, gusty winds, and quickly
plummeting temperatures leading to flash freeze conditions. Total
snow accumulations up to two inches. Winds gusting as high as 35
mph.
* WHERE...Burnett, Douglas, Sawyer, and Washburn Counties. This
includes the Tribal Lands of the Lac Courte Oreilles Reservation
and the St. Croix Band in Burnett County.
* WHEN...Until 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...Mixed precipitation. Additional snow accumulations up to
two inches, ice accumulations around a light glaze, and quickly
plummeting temperatures leading to flash freeze conditions. Winds
gusting as high as 40 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, East
Lake, Big Sandy Lake, Hinckley and, Lena Lake areas and the Bois
Forte Band, Lake Vermilion and, Deer Creek areas.
* WHEN...Until midnight CST tonight.
* IMPACTS...Roads, and especially bridges and overpasses, will
likely become slick and hazardous. Plan on slippery road
conditions. Areas of blowing snow could significantly reduce
visibility, mainly near and in open fields. The hazardous
conditions could impact the Thursday evening commute.
* WHAT...Lake effect snow expected. Total snow accumulations between
1 and 3 inches except between 3 and 5 inches for northern Iron
County. Winds gusting as high as 35 mph.
* WHERE...Ashland, Bayfield, and Iron Counties. This includes the
Tribal Lands of the Red Cliff Band, the northwestern area of the
Lac du Flambeau Band and the Bad River Reservation. Other
locations including the Apostle Islands National Lakeshore and
Madeline Island.
* WHEN...Until 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
between 1 and 4 inches and ice accumulations around a light glaze.
Winds gusting as high as 60 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 evening commute. 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...Snow and mixed precipitation expected. Total snow
accumulations between 1 and 4 inches and ice accumulations around
a light glaze. Winds gusting as high as 45 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 evening commute.
* ADDITIONAL DETAILS...The combination of new snow and strong winds
may cause near-whiteout conditions at times this afternoon and
early this evening.
* WHAT...For the Small Craft Advisory, southwest winds 10 to 20
kt with gusts up to 25 kt and waves 3 to 5 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 5 to 15
kt with gusts up to 20 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 7 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 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 7 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 10 to 20
kt with gusts up to 25 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 7 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...Northwest winds 15 to 25 mph with gusts up to 60 mph
expected.
* WHERE...Southern Cook County. This includes the Tribal Lands of
the Grand Portage Reservation.
* WHEN...From 5 PM this afternoon to 4 AM CST Friday.
* IMPACTS...Damaging winds will blow down trees and power lines.
Widespread power outages are expected. Travel will be difficult,
especially for high profile vehicles.