Winter Storm Warnings
December 18 2025
* WHAT...Snow expected. Total snow accumulations between 2 and 4
inches. Locally higher amounts possible. Winds gusting as high as
35 mph.
* WHERE...Lake and Mason Counties.
* WHEN...From 10 PM this evening to 1 PM EST Friday.
* IMPACTS...Previous rainfall and rapidly dropping temperatures will
cause icy road conditions. This along with reduced visibilities in
snow and blowing snow will result in hazardous driving conditions
and could impact the Friday morning commute. Gusty winds could
bring down tree branches and potentially cause isolated power
outages.
* WHAT...Snow expected. Total snow accumulations between 2 and 5
inches with locally higher amounts possible. Winds gusting as high
as 45 mph leading to blowing and drifting snow.
* WHERE...A portion of Northern Lower Michigan.
* WHEN...From 10 PM this evening to 4 PM EST Friday.
* IMPACTS...Rapidly falling temperatures later tonight will lead to
icy road conditions. Gusty winds combined with falling snow will
result in very poor visibilities at times tonight into Friday.
Gusty winds could bring down tree branches and cause isolated
power outages. The hazardous conditions will impact the Friday
morning commute.
* WHAT...Snow expected. Total snow accumulations between 1 and 3
inches. Winds gusting as high as 40 mph leading to blowing snow.
* WHERE...Western Chippewa County.
* WHEN...From 10 PM this evening to 1 PM EST Friday.
* IMPACTS...Rapidly falling temperatures later tonight will lead to
icy road conditions. Gusty winds combined with falling snow will
result in very poor visibilities at times tonight into Friday.
Gusty winds could bring down tree branches and cause isolated
power outages. The hazardous conditions will impact the Friday
morning commute.
* WHAT...Snow expected. Total snow accumulations between 1 and 6
inches, with the greatest snowfall amounts in the higher
elevations from the Spine of the Keweenaw to Ironwood. Winds
gusting as high as 45 mph.
* WHERE...Portions of central Upper and western Upper Michigan.
* WHEN...From 5 PM EST /4 PM CST/ this afternoon to 7 AM EST /6 AM
CST/ Friday.
* IMPACTS...Roads, and especially bridges and overpasses, will
likely become slick and hazardous. Travel could be very difficult.
Widespread blowing snow could significantly reduce visibility. The
hazardous conditions could impact the Thursday evening and Friday
morning commutes. Gusty winds could bring down tree branches.
* WHAT...Snow expected. Total snow accumulations between 1 and 4
inches. Winds gusting as high as 45 mph.
* WHERE...Alger and Northern Schoolcraft Counties.
* WHEN...From 7 PM this evening to 1 PM EST Friday.
* IMPACTS...Roads, and especially bridges and overpasses, will
likely become slick and hazardous. Plan on slippery road
conditions. Widespread blowing snow could significantly reduce
visibility. The hazardous conditions could impact the Friday
morning commute. Gusty winds could bring down tree branches.
* WHAT...Snow expected. Total snow accumulations between 1 and 3
inches. Winds gusting as high as 45 mph.
* WHERE...Luce County.
* WHEN...From 7 PM this evening to 1 PM EST Friday.
* 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. The hazardous conditions could impact the Friday
morning commute. Gusty winds could bring down tree branches.
* WHAT...Snow expected. Total snow accumulations between 2 and 4
inches, mainly north and along US-41. Winds gusting as high as 45
mph.
* WHERE...Marquette County.
* WHEN...From 7 PM this evening to 1 PM EST Friday.
* IMPACTS...Roads, and especially bridges and overpasses, will
likely become slick and hazardous. Plan on slippery road
conditions. Widespread blowing snow could significantly reduce
visibility. The hazardous conditions could impact the Friday
morning commute. Gusty winds could bring down tree branches.
* WHAT...For the Gale Warning, south to southwest winds 15 to 25
kt with gusts up to 35 kt this morning becoming northwest to
north winds 25 to 35 kt with gusts up to 45 kt tonight; waves 11
to 16 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...Marquette to Munising MI, Munising to Grand Marais MI,
Grand Marais to Whitefish Point MI and Lake Superior from
Grand Marais MI to Whitefish Point MI 5NM off shore to the
US/Canadian border.
* WHEN...For the Gale Warning, until noon EST Friday. For the
Heavy Freezing Spray Warning, from 10 PM this evening to 10 AM
EST 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 Gale Warning, south winds 20 to 30 kt with
gusts up to 45 kt and waves 7 to 10 ft occurring. For the
Storm Warning, north winds 25 to 35 kt with gusts up to 50 kt
and waves 13 to 18 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...Lake Superior East of a line from Manitou Island to
Marquette MI and West of a line from Grand Marais MI to the
US/Canadian Border Beyond 5NM from shore.
* WHEN...For the Gale Warning, until 10 PM EST this evening. For
the Storm Warning, from 10 PM this evening to 4 AM EST Friday.
For the Heavy Freezing Spray Warning, from 10 PM this evening
to 10 AM EST 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.
Storm force winds and hazardous waves will capsize or damage
vessels and reduce visibility.
* WHAT...For the Small Craft Advisory, south to southwest winds 15
to 25 kt with a few gale force gusts up to 35 kt possible and
waves 3 to 6 ft occurring. For the Gale Warning, north winds 25
to 35 kt with gusts up to 45 kt and waves 11 to 16 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...Ontonagon to Upper Entrance of Portage Canal MI.
* WHEN...For the Small Craft Advisory, until 7 PM EST this
evening. For the Gale Warning, from 7 PM this evening to 7 AM
EST Friday. For the Heavy Freezing Spray Warning, from 7 PM
this evening to 8 AM EST 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 Storm Warning, north winds 25 to 35 kt with
gusts up to 50 kt and waves 12 to 17 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...Lake Superior from Upper Entrance to Portage Canal to
Manitou Island MI 5NM off shore to the US/Canadian Border.
* WHEN...For the Storm Warning, from 4 PM this afternoon to 4 AM
EST Friday. For the Heavy Freezing Spray Warning, from 7 PM
this evening to 8 AM EST 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.
Storm force winds and hazardous waves will capsize or damage
vessels and reduce visibility.
* WHAT...For the Gale Warning, north winds 20 to 30 kt with
gusts up to 45 kt and waves 7 to 10 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...Lake Superior west of a line from Saxon Harbor WI to
Grand Portage MN beyond 5NM.
* WHEN...For the Gale Warning, from 4 PM EST /3 PM CST/ this
afternoon to 4 AM EST /3 AM CST/ Friday. For the Heavy
Freezing Spray Warning, from 7 PM EST /6 PM CST/ this evening
to 8 AM EST /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, south to southwest winds 15
to 25 kt with a few gale force gusts up to 35 kt possible and
waves 2 to 5 ft occurring. For the Gale Warning, north winds 25
to 30 kt with gusts up to 40 kt and waves 8 to 13 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...Saxon Harbor WI to Black River MI.
* WHEN...For the Small Craft Advisory, until 7 PM EST /6 PM CST/
this evening. For the Gale Warning, from 7 PM EST /6 PM CST/
this evening to 4 AM EST /3 AM CST/ Friday. For the Heavy
Freezing Spray Warning, from 7 PM EST /6 PM CST/ this evening
to 8 AM EST /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, south becoming west this
afternoon winds 15 to 25 kt with a few gale force gusts up to 35
kt possible late and waves 3 to 6 ft occurring. For the Storm
Warning, north winds 30 to 35 kt with gusts up to 50 kt and
waves 12 to 17 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...Upper Entrance of Portage Canal to Eagle River MI and
Eagle River to Manitou Island MI.
* WHEN...For the Small Craft Advisory, until 7 PM EST this
evening. For the Storm Warning, from 7 PM this evening to 4 AM
EST Friday. For the Heavy Freezing Spray Warning, from 7 PM
this evening to 8 AM EST 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.
Storm force winds and hazardous waves will capsize or damage
vessels and reduce visibility.
* WHAT...For the Storm Warning, north winds 25 to 35 kt with
gusts up to 50 kt and waves 9 to 14 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...Lake Superior from Saxon Harbor WI to Upper Entrance
to Portage Canal MI 5NM off shore to the US/Canadian border
including Isle Royale National Park.
* WHEN...For the Storm Warning, from 4 PM this afternoon to 7 AM
EST Friday. For the Heavy Freezing Spray Warning, from 7 PM
this evening to 8 AM EST 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. Storm force winds and hazardous waves will capsize
or damage vessels and reduce visibility.
* WHAT...For the Gale Warning, south to southwest winds 20 to 30
kt with gusts up to 40 kt this morning becoming northwest to
north winds 25 to 35 kt with gusts up to 45 kt tonight; waves 12
to 17 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...Huron Islands to Marquette MI and Lake Superior West
of Line from Manitou Island to Marquette MI Beyond 5NM from
shore.
* WHEN...For the Gale Warning, until 10 AM EST Friday. For the
Heavy Freezing Spray Warning, from 10 PM this evening to 10 AM
EST 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 first Gale Warning, south winds 20 to 25 kt with
gusts up to 35 kt and waves 5 to 8 ft occurring. For the Small
Craft Advisory, south to southwest winds 15 to 25 kt with a few
gale force gusts up to 35 kt possible and waves 5 to 8 ft
expected. For the second Gale Warning, northwest winds 20 to 30
kt with gusts up to 40 kt and waves 3 to 6 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...Green Bay North of line from Cedar River MI to Rock
Island Passage and 5NM East of a line from Fairport MI to Rock
Island Passage.
* WHEN...For the first Gale Warning, until 7 AM EST this
morning. For the Small Craft Advisory, until 1 AM EST Friday.
For the second Gale Warning, from 1 AM to 10 AM EST Friday.
For the Heavy Freezing Spray Warning, from 4 AM to 10 AM EST
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, south to southwest winds
15 to 25 kt with gusts up to 30 kt and waves 2 to 5 ft
occurring. For the Gale Warning, north winds 25 to 30 kt with
gusts up to 40 kt and waves 9 to 14 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...Black River to Ontonagon MI.
* WHEN...For the Small Craft Advisory, until 7 PM EST /6 PM CST/
this evening. For the Gale Warning, from 7 PM EST /6 PM CST/
this evening to 7 AM EST /6 AM CST/ Friday. For the Heavy
Freezing Spray Warning, from 7 PM EST /6 PM CST/ this evening
to 8 AM EST /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 Gale Warning, south winds 20 to 30 kt with
gusts up to 45 kt and waves 7 to 10 ft occurring. For the
Storm Warning, north winds 25 to 35 kt with gusts up to 50 kt
and waves 13 to 18 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...Lake Superior East of a line from Manitou Island to
Marquette MI and West of a line from Grand Marais MI to the
US/Canadian Border Beyond 5NM from shore.
* WHEN...For the Gale Warning, until 10 PM EST this evening. For
the Storm Warning, from 10 PM this evening to 4 AM EST Friday.
For the Heavy Freezing Spray Warning, from 10 PM this evening
to 10 AM EST 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.
Storm force winds and hazardous waves will capsize or damage
vessels and reduce visibility.
* WHAT...For the Gale Warning, south to southwest winds 10 to 20
kt with gusts up to 35 kt this morning becoming north winds 20
to 30 kt with gusts up to 40 kt tonight; 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...Lower Entrance of Portage Canal To Huron Islands MI
Including Keweenaw and Huron Bays.
* WHEN...For the Gale Warning, until 7 AM EST Friday. For the
Heavy Freezing Spray Warning, from 10 PM this evening to 10 AM
EST 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 Storm Warning, north winds 25 to 35 kt with
gusts up to 50 kt and waves 9 to 14 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...Lake Superior from Saxon Harbor WI to Upper Entrance
to Portage Canal MI 5NM off shore to the US/Canadian border
including Isle Royale National Park.
* WHEN...For the Storm Warning, from 4 PM this afternoon to 7 AM
EST Friday. For the Heavy Freezing Spray Warning, from 7 PM
this evening to 8 AM EST 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. Storm force winds and hazardous waves will capsize
or damage vessels and reduce visibility.
* WHAT...For the Small Craft Advisory, south to southwest winds
10 to 20 kt with gusts up to 30 kt and waves 1 to 4 ft
occurring. For the Gale Warning, north winds 20 to 25 kt with
gusts up to 40 kt and waves 2 to 5 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...Point Isabelle to Lower Entrance of Portage Canal MI.
* WHEN...For the Small Craft Advisory, until 9 PM EST this
evening. For the Gale Warning, from 9 PM this evening to 8 AM
EST Friday. For the Heavy Freezing Spray Warning, from 10 PM
this evening to 10 AM EST 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 Storm Warning, north winds 25 to 35 kt with
gusts up to 50 kt and waves 12 to 17 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...Lake Superior from Upper Entrance to Portage Canal to
Manitou Island MI 5NM off shore to the US/Canadian Border.
* WHEN...For the Storm Warning, from 4 PM this afternoon to 4 AM
EST Friday. For the Heavy Freezing Spray Warning, from 7 PM
this evening to 8 AM EST 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.
Storm force winds and hazardous waves will capsize or damage
vessels and reduce visibility.
* WHAT...For the Small Craft Advisory, south becoming west this
afternoon winds 15 to 25 kt with a few gale force gusts up to 35
kt possible late and waves 3 to 6 ft occurring. For the Storm
Warning, north winds 30 to 35 kt with gusts up to 50 kt and
waves 12 to 17 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...Upper Entrance of Portage Canal to Eagle River MI and
Eagle River to Manitou Island MI.
* WHEN...For the Small Craft Advisory, until 7 PM EST this
evening. For the Storm Warning, from 7 PM this evening to 4 AM
EST Friday. For the Heavy Freezing Spray Warning, from 7 PM
this evening to 8 AM EST 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.
Storm force winds and hazardous waves will capsize or damage
vessels and reduce visibility.
* WHAT...For the Small Craft Advisory, south winds 15 to 25 kt
with a few gale force gusts up to 35 kt possible early and waves
5 to 8 ft occurring. For the Storm Warning, north winds 25 to 35
kt with gusts up to 50 kt and waves 7 to 12 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...Manitou Island to Point Isabelle MI.
* WHEN...For the Small Craft Advisory, until 7 PM EST this
evening. For the Storm Warning, from 7 PM this evening to 4 AM
EST Friday. For the Heavy Freezing Spray Warning, from 10 PM
this evening to 10 AM EST 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.
Storm force winds and hazardous waves will capsize or damage
vessels and reduce visibility.
* WHAT...For the Small Craft Advisory, south winds 15 to 25 kt
with a few gale force gusts up to 35 kt possible early and waves
5 to 8 ft occurring. For the Storm Warning, north winds 25 to 35
kt with gusts up to 50 kt and waves 7 to 12 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...Manitou Island to Point Isabelle MI.
* WHEN...For the Small Craft Advisory, until 7 PM EST this
evening. For the Storm Warning, from 7 PM this evening to 4 AM
EST Friday. For the Heavy Freezing Spray Warning, from 10 PM
this evening to 10 AM EST 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.
Storm force winds and hazardous waves will capsize or damage
vessels and reduce visibility.
Residents of Michigan are urged to take caution as multiple weather advisories are in effect across the state. Lake and Mason Counties are under a Winter Weather Advisory with 2 to 4 inches of snow accumulation and wind gusts up to 35 mph, which may result in icy road conditions and hazardous driving, especially during the Friday morning commute. Wind Advisories for Keweenaw, Northern Houghton, Alger, and Marquette Counties warn of gusts up to 55 mph, potentially causing power outages and blowing down tree limbs. Additionally, Lakeshore Flood Advisories have been issued for Northern Houghton, Marquette, Alger, and Keweenaw Counties, with minor flooding expected on low-lying roads and properties. Northern Lower Michigan, including parts of Western Chippewa County, is also bracing for 2 to 5 inches of snow and strong winds, leading to poor visibility and treacherous road conditions. Citizens are advised to prepare for slick roads, reduced visibility, and possible power outages, and to stay informed on the latest weather updates.
Avalanche Conditions