fzus53 kdlh 182141
nshdlh
expires:202512190500;;821515

nearshore marine forecast
national weather service duluth mn
341 pm cst thu dec 18 2025

for waters within five nautical miles of shore on lake superior.         

waves are the significant wave height - the average of the highest 
1/3 of the wave spectrum. occasional wave height is the average of 
the highest 1/10 of the wave spectrum.


lsz121-190500-
chequamegon bay-bayfield to oak point wi-
341 pm cst thu dec 18 2025

...gale warning in effect through late tonight...
...heavy freezing spray warning in effect through friday
morning...
...gale watch in effect from saturday morning through late
saturday night...

.tonight...northwest wind 20 to 25 knots. gusts up to 35 knots
decreasing to 25 knots. patchy blowing snow until early morning.
snow in the evening. snow likely after midnight, then chance of
snow late in the night. waves 1 to 3 feet. 
.friday...northwest wind 10 to 15 knots with gusts to around
20 knots becoming southwest 5 knots early in the afternoon, then
becoming south late in the afternoon. slight chance of snow in
the afternoon. waves 1 to 2 feet. 
.friday night...south wind 10 to 15 knots with gusts to around
20 knots becoming southwest with gusts to around 25 knots early
in the morning. chance of snow in the evening, then snow likely
after midnight. waves 1 foot or less. 
.saturday...west wind 20 to 25 knots. gusts up to 30 knots
increasing to 35 knots in the afternoon. slight chance of snow in
the morning. waves 1 to 3 feet. a gale warning may be needed. 

$$

fzus53 kdlh 182141
nshdlh
expires:202512190500;;821506

nearshore marine forecast
national weather service duluth mn
341 pm cst thu dec 18 2025

for waters within five nautical miles of shore on lake superior.         

waves are the significant wave height - the average of the highest 
1/3 of the wave spectrum. occasional wave height is the average of 
the highest 1/10 of the wave spectrum.


lsz140-190500-
grand portage to grand marais mn-
341 pm cst thu dec 18 2025

...storm warning in effect through late tonight...
...gale watch in effect from saturday morning through late
saturday night...

.tonight...north wind up to 30 knots. storm force gusts up to
50 knots decreasing to 45 knots late in the night. heavy freezing
spray in the evening. patchy blowing snow through the night. snow
in the evening. chance of snow after midnight, then slight chance
of snow late in the night. waves 4 to 7 feet. waves occasionally
to 10 feet. 
.friday...north wind 20 to 25 knots with gusts to around 30 knots
becoming northeast 5 to 10 knots early in the afternoon, then
becoming southeast late in the afternoon. chance of snow in the
afternoon. waves 2 to 4 feet subsiding to 1 to 3 feet in the late
morning and afternoon. a small craft advisory may be needed. 
.friday night...south wind 20 to 25 knots becoming southwest
early in the morning. gusts up to 30 knots. snow likely through
the night. freezing spray after midnight. waves 1 to 2 feet
building to 4 to 7 feet in the late evening and overnight. waves
occasionally to 9 feet. a small craft advisory may be needed. 
.saturday...west wind 20 to 25 knots with gales to around
35 knots. slight chance of snow in the morning. heavy freezing
spray in the afternoon. waves 5 to 8 feet. waves occasionally to
10 feet. a gale warning may be needed. 

$$

fzus53 kdlh 182141
nshdlh
expires:202512190500;;821507

nearshore marine forecast
national weather service duluth mn
341 pm cst thu dec 18 2025

for waters within five nautical miles of shore on lake superior.         

waves are the significant wave height - the average of the highest 
1/3 of the wave spectrum. occasional wave height is the average of 
the highest 1/10 of the wave spectrum.


lsz141-190500-
grand marais to taconite harbor mn-
341 pm cst thu dec 18 2025

...storm warning in effect through late tonight...
...gale watch in effect from saturday morning through late
saturday night...

.tonight...north wind up to 30 knots with storm force gusts to
around 50 knots easing to 15 to 20 knots with gales to around
35 knots late in the night. snow early in the evening. snow
likely late in the evening, then chance of snow after midnight.
heavy freezing spray early in the evening. patchy blowing snow
through the night. waves 4 to 6 feet subsiding to 2 to 4 feet
after midnight. waves occasionally to 8 feet. 
.friday...north wind 10 to 15 knots with gusts to around 25 knots
becoming northwest 5 knots early in the afternoon, then becoming
south with gusts to around 20 knots late in the afternoon. chance
of snow in the afternoon. waves 1 to 2 feet. 
.friday night...south wind 15 to 20 knots becoming southwest
early in the morning. gusts up to 30 knots. snow likely. waves
1 to 2 feet building to 2 to 4 feet in the late evening and
overnight. a small craft advisory may be needed. 
.saturday...west wind 20 to 25 knots. gusts up to 30 knots
increasing to 35 knots in the late morning and afternoon. slight
chance of snow in the morning. waves 3 to 5 feet. waves
occasionally to 7 feet. a gale warning may be needed. 

$$

fzus53 kdlh 182141
nshdlh
expires:202512190500;;821508

nearshore marine forecast
national weather service duluth mn
341 pm cst thu dec 18 2025

for waters within five nautical miles of shore on lake superior.         

waves are the significant wave height - the average of the highest 
1/3 of the wave spectrum. occasional wave height is the average of 
the highest 1/10 of the wave spectrum.


lsz142-190500-
taconite harbor to silver bay harbor mn-
341 pm cst thu dec 18 2025

...gale warning in effect through late tonight...
...gale watch in effect from saturday morning through late
saturday night...

.tonight...north wind up to 30 knots with storm force gusts to
around 50 knots becoming northwest 15 to 20 knots with gales to
around 35 knots late in the night. snow early in the evening.
snow likely late in the evening, then slight chance of snow after
midnight. heavy freezing spray early in the evening. patchy
blowing snow through the night. waves 4 to 6 feet subsiding to
2 to 4 feet after midnight. waves occasionally to 8 feet. 
.friday...northwest wind 10 to 15 knots with gusts to around
25 knots becoming west 5 knots early in the afternoon, then
becoming south with gusts to around 20 knots late in the
afternoon. chance of snow in the afternoon. waves 1 to 2 feet. 
.friday night...south wind 10 to 15 knots with gusts to around
30 knots becoming southwest with gusts to around 25 knots early
in the morning. snow likely. waves 1 to 3 feet. 
.saturday...west wind 20 to 25 knots with gales to around
35 knots. slight chance of snow in the morning. waves 2 to
4 feet. a gale warning may be needed. 

$$

fzus53 kdlh 182141
nshdlh
expires:202512190500;;821509

nearshore marine forecast
national weather service duluth mn
341 pm cst thu dec 18 2025

for waters within five nautical miles of shore on lake superior.         

waves are the significant wave height - the average of the highest 
1/3 of the wave spectrum. occasional wave height is the average of 
the highest 1/10 of the wave spectrum.


lsz143-190500-
silver bay harbor to two harbors mn-
341 pm cst thu dec 18 2025

...gale warning in effect through late tonight...
...gale watch in effect from saturday morning through late
saturday night...

.tonight...north wind up to 30 knots with gales to around
45 knots becoming northwest 15 to 20 knots with gusts to around
30 knots late in the night. patchy blowing snow until early
morning. snow early in the evening. chance of snow late in the
evening, then slight chance of snow after midnight. waves 3 to
5 feet subsiding to 1 to 3 feet late in the night. waves
occasionally to 7 feet. 
.friday...northwest wind 10 to 15 knots with gusts to around
20 knots becoming southwest 5 knots early in the afternoon, then
becoming south with gusts to around 20 knots late in the
afternoon. chance of snow in the afternoon. waves 1 to 2 feet. 
.friday night...south wind 10 to 15 knots with gusts to around
30 knots becoming southwest 15 to 20 knots with gusts to around
25 knots early in the morning. chance of snow in the evening,
then snow likely after midnight. waves 1 to 3 feet building to
2 to 4 feet after midnight. 
.saturday...west wind 20 to 25 knots. gusts up to 30 knots
increasing to 35 knots in the late morning and afternoon. partly
sunny. waves 3 to 5 feet. a gale warning may be needed. 

$$

fzus53 kdlh 182141
nshdlh
expires:202512190500;;821510

nearshore marine forecast
national weather service duluth mn
341 pm cst thu dec 18 2025

for waters within five nautical miles of shore on lake superior.         

waves are the significant wave height - the average of the highest 
1/3 of the wave spectrum. occasional wave height is the average of 
the highest 1/10 of the wave spectrum.


lsz144-190500-
two harbors to duluth mn-
341 pm cst thu dec 18 2025

...gale warning in effect through late tonight...
...gale watch in effect from saturday morning through late
saturday night...

.tonight...north wind up to 30 knots with gales to around
40 knots becoming northwest 15 to 20 knots with gusts to around
25 knots late in the night. patchy blowing snow until early
morning. snow early in the evening. chance of snow late in the
evening, then slight chance of snow after midnight. waves 3 to
5 feet subsiding to 1 to 3 feet late in the night. 
.friday...northwest wind 10 to 15 knots with gusts to around
20 knots becoming south 5 to 10 knots with gusts to around
20 knots in the afternoon. chance of snow in the afternoon. waves
1 to 2 feet. 
.friday night...south wind 15 to 20 knots with gusts to around
30 knots becoming southwest with gusts to around 25 knots early
in the morning. chance of snow in the evening, then snow likely
after midnight. waves 1 to 3 feet building to 2 to 4 feet after
midnight. 
.saturday...west wind up to 30 knots. gusts up to 35 knots in the
afternoon. partly sunny. waves 4 to 6 feet. waves occasionally to
7 feet. a gale warning may be needed. 

$$

fzus53 kdlh 182141
nshdlh
expires:202512190500;;821511

nearshore marine forecast
national weather service duluth mn
341 pm cst thu dec 18 2025

for waters within five nautical miles of shore on lake superior.         

waves are the significant wave height - the average of the highest 
1/3 of the wave spectrum. occasional wave height is the average of 
the highest 1/10 of the wave spectrum.


lsz145-190500-
duluth mn to port wing wi-
341 pm cst thu dec 18 2025

...gale warning in effect through late tonight...
...heavy freezing spray warning in effect through friday
morning...
...gale watch in effect from saturday morning through late
saturday night...

.tonight...north wind up to 30 knots with gales to around
40 knots becoming northwest 15 to 20 knots with gusts to around
25 knots late in the night. patchy blowing snow in the evening.
heavy freezing spray until early morning. snow early in the
evening. chance of snow late in the evening, then slight chance
of snow after midnight. waves 5 to 8 feet subsiding to 2 to
4 feet late in the night. waves occasionally to 10 feet. 
.friday...northwest wind 10 to 15 knots becoming south 5 to
10 knots in the afternoon. chance of snow in the afternoon. waves
1 to 3 feet subsiding to 1 to 2 feet in the late morning and
afternoon. 
.friday night...south wind 15 to 20 knots with gusts to around
25 knots becoming southwest 20 to 25 knots early in the morning.
chance of snow in the evening, then snow likely after midnight.
waves 1 to 2 feet building to 2 to 4 feet after midnight. a small
craft advisory may be needed. 
.saturday...west wind up to 30 knots. gusts up to 30 knots
increasing to 35 knots in the late morning and afternoon. heavy
freezing spray. waves 5 to 8 feet. waves occasionally to 10 feet.
a gale warning may be needed. 

$$

fzus53 kdlh 182141
nshdlh
expires:202512190500;;821512

nearshore marine forecast
national weather service duluth mn
341 pm cst thu dec 18 2025

for waters within five nautical miles of shore on lake superior.         

waves are the significant wave height - the average of the highest 
1/3 of the wave spectrum. occasional wave height is the average of 
the highest 1/10 of the wave spectrum.


lsz146-190500-
port wing to sand island wi-
341 pm cst thu dec 18 2025

...gale warning in effect through late tonight...
...heavy freezing spray warning in effect through friday
morning...
...gale watch in effect from saturday morning through late
saturday night...

.tonight...north wind up to 30 knots with gales to around
40 knots becoming northwest 15 to 20 knots with gusts to around
25 knots late in the night. heavy freezing spray and patchy
blowing snow until early morning. snow in the evening. chance of
snow after midnight, then slight chance of snow late in the
night. waves 5 to 8 feet subsiding to 3 to 5 feet late in the
night. waves occasionally to 10 feet. 
.friday...northwest wind 10 to 15 knots with gusts to around
20 knots becoming southwest 5 knots early in the afternoon, then
becoming south late in the afternoon. chance of snow in the
afternoon. waves 2 to 4 feet subsiding to 1 to 2 feet in the late
morning and afternoon. 
.friday night...south wind 10 to 15 knots with gusts to around
20 knots becoming southwest 15 to 20 knots with gusts to around
25 knots after midnight. chance of snow in the evening, then snow
likely after midnight. waves 1 to 3 feet building to 2 to 4 feet
early in the morning. a small craft advisory may be needed. 
.saturday...west wind up to 30 knots. gales up to 40 knots in the
late morning and afternoon. slight chance of snow in the morning.
heavy freezing spray through the day. waves 6 to 9 feet. waves
occasionally to 11 feet. a gale warning may be needed. 

$$

fzus53 kdlh 182141
nshdlh
expires:202512190500;;821513

nearshore marine forecast
national weather service duluth mn
341 pm cst thu dec 18 2025

for waters within five nautical miles of shore on lake superior.         

waves are the significant wave height - the average of the highest 
1/3 of the wave spectrum. occasional wave height is the average of 
the highest 1/10 of the wave spectrum.


lsz147-190500-
sand island to bayfield wi-
341 pm cst thu dec 18 2025

...gale warning in effect through late tonight...
...heavy freezing spray warning in effect through friday
morning...
...gale watch in effect from saturday morning through late
saturday night...

.tonight...north wind up to 30 knots. gales up to 40 knots.
patchy blowing snow until early morning. heavy freezing spray
through the night. snow until early morning. chance of snow late
in the night. waves 5 to 8 feet subsiding to 4 to 6 feet late in
the night. waves occasionally to 10 feet. 
.friday...northwest wind 10 to 15 knots with gusts to around
20 knots becoming west 5 knots early in the afternoon, then
becoming south late in the afternoon. chance of snow in the
afternoon. waves 2 to 4 feet subsiding to 1 to 2 feet in the late
morning and afternoon. a small craft advisory may be needed. 
.friday night...south wind 10 to 15 knots with gusts to around
25 knots becoming southwest 15 to 20 knots with gusts to around
25 knots early in the morning. chance of snow in the evening,
then snow likely after midnight. waves 1 to 3 feet. 
.saturday...west wind up to 30 knots. gusts up to 30 knots
increasing to 45 knots. slight chance of snow in the morning.
heavy freezing spray in the afternoon. waves 4 to 6 feet building
to 5 to 8 feet in the late morning and afternoon. waves
occasionally to 11 feet. a gale warning may be needed. 

$$

fzus53 kdlh 182141
nshdlh
expires:202512190500;;821516

nearshore marine forecast
national weather service duluth mn
341 pm cst thu dec 18 2025

for waters within five nautical miles of shore on lake superior.         

waves are the significant wave height - the average of the highest 
1/3 of the wave spectrum. occasional wave height is the average of 
the highest 1/10 of the wave spectrum.


lsz148-190500-
oak point to saxon harbor wi-
341 pm cst thu dec 18 2025

...gale warning in effect through late tonight...
...heavy freezing spray warning in effect through friday
morning...
...gale watch in effect from saturday morning through late
saturday night...

.tonight...north wind up to 30 knots. gales up to 40 knots
decreasing to 30 knots. patchy blowing snow until early morning.
heavy freezing spray through the night. snow until early morning.
snow likely late in the night. waves 5 to 8 feet. waves
occasionally to 11 feet. 
.friday...northwest wind 15 to 20 knots becoming west 5 knots
early in the afternoon, then becoming south late in the
afternoon. chance of snow in the morning, then slight chance of
snow in the afternoon. waves 4 to 6 feet subsiding to 1 to
2 feet. waves occasionally to 8 feet. a small craft advisory may
be needed. 
.friday night...south wind 15 to 20 knots with gusts to around
25 knots becoming southwest with gusts to around 25 knots early
in the morning. chance of snow in the evening, then snow likely
after midnight. waves 1 to 3 feet. 
.saturday...west wind up to 30 knots with gales to around
35 knots. slight chance of snow and light freezing rain in the
morning. waves 4 to 6 feet. waves occasionally to 7 feet. a gale
warning may be needed. 

$$

fzus53 kmqt 182201
nshmqt
expires:202512190900;;822065

nearshore marine forecast
national weather service marquette mi
501 pm est thu dec 18 2025

for waters within five nautical miles of shore

waves are the significant wave height - the average of the
highest 1/3 of the wave spectrum. occasional wave height is the
average of the highest 1/10 of the wave spectrum.


lsz240-190900-
saxon harbor wi to black river mi-
501 pm est thu dec 18 2025 /401 pm cst thu dec 18 2025/

...small craft advisory in effect until 7 pm est /6 pm cst/ this
evening...
...gale warning in effect until 4 am est /3 am cst/ friday...
...heavy freezing spray warning in effect through friday
morning...
...gale watch in effect from saturday morning through late
saturday night...

.late this afternoon...west wind 15 to 25 knots. snow showers
possibly mixed with rain showers. waves 2 to 3 feet building to
2 to 4 feet. 
.tonight...north wind up to 30 knots with gale force gusts up to
39 knots. snow. patchy fog through late evening. heavy freezing
spray through the night. waves building to 7 to 10 feet
occasionally to 13 feet, then subsiding to 6 to 9 feet
occasionally to 11 feet. 
.friday...northwest wind 10 to 20 knots with gusts up to 28 knots
diminishing to less than 10 knots with gusts up to 28 knots by
late morning, then backing south late. cloudy. freezing spray
through mid morning. snow likely through mid morning, then a
chance of snow showers by late morning. a slight chance of snow
showers late. waves subsiding to 1 to 2 feet. 
.friday night...south wind 10 to 20 knots veering southwest 15 to
20 knots after midnight. cloudy. a slight chance of snow in the
evening, then snow likely after midnight. waves building to 2 to
3 feet. 
.saturday...southwest wind 20 to 25 knots veering west up to
30 knots in the afternoon. mostly cloudy with a slight chance of
snow. freezing spray in the afternoon. waves building to 5 to
8 feet occasionally to 10 feet. 

note: wave height forecasts are for ice free areas.

$$

fzus53 kmqt 182201
nshmqt
expires:202512190900;;822066

nearshore marine forecast
national weather service marquette mi
501 pm est thu dec 18 2025

for waters within five nautical miles of shore

waves are the significant wave height - the average of the
highest 1/3 of the wave spectrum. occasional wave height is the
average of the highest 1/10 of the wave spectrum.


lsz241-190900-
black river to ontonagon mi-
501 pm est thu dec 18 2025 /401 pm cst thu dec 18 2025/

...small craft advisory in effect until 7 pm est /6 pm cst/ this
evening...
...gale warning in effect through friday morning...
...heavy freezing spray warning in effect through friday
morning...
...gale watch in effect from saturday morning through late
saturday night...

.late this afternoon...west wind 15 to 20 knots. snow showers
likely possibly mixed with rain showers. patchy fog. waves 2 to
3 feet building to 2 to 4 feet. 
.tonight...north wind up to 30 knots. snow through midnight, then
snow likely late. freezing spray through the night. waves
building to 9 to 12 feet occasionally to 15 feet, then subsiding
to 8 to 11 feet occasionally to 14 feet. 
.friday...north wind 15 to 25 knots becoming northwest 5 to
15 knots with gusts up to 29 knots by late morning, then backing
south less than 10 knots late. cloudy. freezing spray through mid
morning. a chance of snow through early afternoon, then a slight
chance of snow showers late. waves subsiding to 2 to 3 feet. 
.friday night...south wind 10 to 15 knots increasing to 15 to
20 knots after midnight. cloudy. a slight chance of snow in the
evening, then snow after midnight. waves subsiding to 1 to
2 feet, then building to 2 to 4 feet. 
.saturday...southwest wind up to 30 knots veering west in the
afternoon. gale force gusts up to 37 knots. mostly cloudy with a
slight chance of snow. freezing spray in the afternoon. waves
building to 8 to 11 feet occasionally to 14 feet. 

note: wave height forecasts are for ice free areas.

$$

fzus53 kmqt 182201
nshmqt
expires:202512190900;;822068

nearshore marine forecast
national weather service marquette mi
501 pm est thu dec 18 2025

for waters within five nautical miles of shore

waves are the significant wave height - the average of the
highest 1/3 of the wave spectrum. occasional wave height is the
average of the highest 1/10 of the wave spectrum.


lsz242-190900-
ontonagon to upper entrance of portage canal mi-
501 pm est thu dec 18 2025

...small craft advisory in effect until 7 pm est this evening...
...gale warning in effect through friday morning...
...heavy freezing spray warning in effect through friday
morning...
...gale watch in effect from saturday morning through late
saturday night...

.late this afternoon...northwest wind 20 to 25 knots. rain
showers and snow showers likely. patchy fog. waves 2 to 3 feet
building to 3 to 5 feet occasionally to 7 feet. 
.tonight...north wind up to 30 knots with gale force gusts up to
47 knots. snow. heavy freezing spray. waves building to 12 to
17 feet occasionally to 21 feet, then subsiding to 11 to 15 feet
occasionally to 19 feet. 
.friday...north wind up to 30 knots with gale force gusts up to
42 knots diminishing to 10 to 20 knots with gale force gusts up
to 42 knots by late morning, then veering southeast less than
10 knots with gusts up to 20 knots late. cloudy. freezing spray
through early afternoon. snow likely through mid morning. a
chance of snow showers by late morning, then a slight chance of
snow showers late. waves subsiding to 2 to 3 feet. 
.friday night...south wind 10 to 20 knots increasing to 15 to
25 knots after midnight. cloudy. a slight chance of snow in the
evening, then snow after midnight. waves subsiding to 1 to
2 feet, then building to 2 to 4 feet. 
.saturday...southwest wind up to 30 knots veering west gales to
35 knots in the afternoon. gale force gusts up to 44 knots.
mostly cloudy with a chance of snow. freezing spray in the
afternoon. waves building to 11 to 15 feet occasionally to
19 feet, then subsiding to 10 to 14 feet occasionally to 18 feet.

note: wave height forecasts are for ice free areas.

$$