fzus63 kdtx 010810
glflh 
expires:202512011615;;809260

open lake forecast for lake huron
national weather service detroit/pontiac mi
310 am est mon dec 1 2025

for waters beyond five nautical miles off shore on lake huron

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.

.synopsis...high pressure, 30.50 inches, expands over the central
great lakes tonight through monday. a strong arctic cold front
arrives midweek bringing a period of stronger preceding southwest
and trailing northwest winds.


lhz361-011615-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
310 am est mon dec 1 2025

.today...west winds 5 to 10 knots becoming southwest 15 to
20 knots. a chance of snow. waves 1 to 3 feet building to 3 to
5 feet late in the afternoon. 
.tonight...southwest winds 15 to 20 knots decreasing to 10 to
15 knots early in the morning. a chance of snow. waves 3 to
5 feet. 
.tuesday...west winds 5 to 10 knots increasing to 10 to 15 knots
early in the afternoon. waves 2 to 4 feet subsiding to 1 to
3 feet in the late morning and afternoon. 
.tuesday night...southwest winds 10 to 15 knots increasing to
15 to 20 knots in the late evening and overnight. a chance of
snow after midnight. waves 1 to 3 feet building to 3 to 5 feet in
the late evening and overnight. 
.wednesday...southwest winds 15 to 20 knots becoming northwest
20 to 25 knots late in the afternoon. snow. a chance of snow late
in the evening. waves 5 to 7 feet building to 6 to 9 feet late in
the afternoon. waves occasionally around 12 feet. 
.thursday...northwest winds 15 to 20 knots decreasing to 10 to
15 knots until early evening...then becoming southwest 15 to
20 knots in the late evening and early morning. a chance of snow
early in the morning. a chance of snow in the late evening and
early morning. waves 5 to 7 feet. waves occasionally around
10 feet. 
.friday...southwest winds 15 to 20 knots decreasing to 10 to
15 knots in the late evening and early morning. a chance of snow
until afternoon...then snow likely until early morning. waves
3 to 5 feet. 


$$

fzus63 kdtx 010810
glflh 
expires:202512011615;;809261

open lake forecast for lake huron
national weather service detroit/pontiac mi
310 am est mon dec 1 2025

for waters beyond five nautical miles off shore on lake huron

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.

.synopsis...high pressure, 30.50 inches, expands over the central
great lakes tonight through monday. a strong arctic cold front
arrives midweek bringing a period of stronger preceding southwest
and trailing northwest winds.


lhz362-363-011615-
lake huron from presque isle light to sturgeon point mi beyond
5nm off shore-
lake huron from sturgeon point to alabaster mi beyond 5nm off
shore-
310 am est mon dec 1 2025

.today...west winds 5 to 10 knots backing to the southwest late
in the morning...then increasing to 10 to 15 knots early in the
afternoon increasing to 15 to 20 knots late in the afternoon.
waves 3 to 5 feet subsiding to 1 to 3 feet early in the
afternoon...then building to 2 to 4 feet late in the afternoon. 
.tonight...southwest winds 15 to 20 knots. a chance of snow.
waves 4 to 6 feet. waves occasionally around 8 feet. 
.tuesday...west winds 10 to 15 knots. waves 3 to 5 feet subsiding
to 1 to 3 feet early in the afternoon. 
.tuesday night...southwest winds 10 to 15 knots increasing to
20 to 25 knots. waves 2 to 4 feet building to 6 to 9 feet. waves
occasionally around 12 feet. 
.wednesday...southwest winds 20 to 25 knots with gusts to around
30 knots increasing to 30 knots late in the morning...then
decreasing to 20 to 25 knots with gusts to around 30 knots late
in the afternoon veering to the northwest late in the evening. a
chance of snow in the morning...then snow likely late in the
morning. a chance of snow late in the afternoon. waves 10 to
14 feet. waves occasionally around 18 feet. 
.thursday...northwest winds 20 to 25 knots becoming west 15 to
20 knots until early evening...then becoming southwest 20 to
25 knots in the late evening and early morning. a chance of snow
early in the morning. waves 8 to 12 feet. waves occasionally
around 15 feet. 
.friday...southwest winds 20 to 25 knots. a chance of snow until
early morning. waves 8 to 12 feet. waves occasionally around
15 feet. 


$$

fzus63 kdtx 010810
glflh 
expires:202512011615;;809262

open lake forecast for lake huron
national weather service detroit/pontiac mi
310 am est mon dec 1 2025

for waters beyond five nautical miles off shore on lake huron

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.

.synopsis...high pressure, 30.50 inches, expands over the central
great lakes tonight through monday. a strong arctic cold front
arrives midweek bringing a period of stronger preceding southwest
and trailing northwest winds.


lhz462>464-011615-
lake huron from port austin to harbor beach beyond 5nm off shore-
lake huron from harbor beach to port sanilac beyond 5nm off shore-
lake huron from port sanilac to port huron beyond 5nm off shore-
310 am est mon dec 1 2025

.today...west winds 10 to 15 knots becoming southwest 5 to
10 knots in the late morning and early afternoon...then
increasing to 10 to 15 knots late in the afternoon. waves 4 to
6 feet subsiding to 1 to 3 feet in the afternoon. waves
occasionally around 8 feet. 
.tonight...southwest winds 10 to 15 knots. a chance of snow.
waves 1 to 3 feet building to 2 to 4 feet in the late evening and
overnight. 
.tuesday...west winds 5 to 10 knots increasing to 10 to 15 knots
early in the afternoon. waves 1 to 3 feet. 
.tuesday night...southwest winds 10 to 15 knots increasing to
15 to 20 knots in the late evening and overnight. waves 1 to
3 feet building to 4 to 6 feet in the late evening and overnight.
waves occasionally around 8 feet. 
.wednesday...southwest winds 20 to 25 knots with gusts to around
30 knots veering to the west late in the evening. a chance of
snow in the morning...then snow likely. waves 6 to 9 feet. waves
occasionally around 12 feet. 
.thursday...northwest winds 20 to 25 knots becoming west 15 to
20 knots until early evening...then backing to the southwest in
the late evening and early morning. a chance of snow early in the
morning. waves 8 to 12 feet. waves occasionally around 15 feet. 
.friday...southwest winds 20 to 25 knots decreasing to 15 to
20 knots. a chance of snow in the late evening and early morning.
waves 5 to 7 feet. waves occasionally around 10 feet. 


$$

fzus63 kmkx 010821
glflm 
expires:202512011615;;809530

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
221 am cst mon dec 1 2025

for waters beyond five nautical miles of shore on lake michigan.

waves are provided as a range of significant wave heights, which
is the average of the highest 1/3 of the wave, along with the
average height of the highest 10% of the waves which will
occasionally be encountered.

.synopsis...

light and variable winds this morning will turn southerly by this
afternoon as high pressure of 30.5 inches moves into the
northeast. light west to southwest winds are expected late tonight
and tuesday as another area of high pressure moves through the
ohio valley. 

a strong cold front will move across the lake wednesday and
wednesday night. gusty winds are expected, though for now, they
are expected to remain just below gale force. very cold air with
this system will result in a risk for freezing spray wednesday and
thursday. 


lmz261-362-364-366-563-565-567-868-011615-
lake michigan from seul choix point to rock island passage 5 nm
offshore to mid lake-
lake michigan south of a line from seul choix point to the
mackinac bridge and north of a line from charlevoix mi to south
fox island 5 nm offshore-
lake michigan from charlevoix to point betsie mi 5 nm offshore to
mid lake-
lake michigan from point betsie to manistee mi 5 nm offshore to
mid lake-
lake michigan from rock island passage to sturgeon bay wi-
lake michigan from sturgeon bay to two rivers wi 5 nm offshore to
mid lake-
lake michigan from two rivers to sheboygan wi 5 nm offshore to
mid lake-
lake michigan from pentwater to manistee mi 5 nm offshore to mid
lake-
221 am cst mon dec 1 2025

sheboygan wi to pentwater mi north...

.today...west winds 10 to 20 kt becoming southwest 15 to 25 kt.
chance of snow this afternoon. waves 1 to 3 ft building to 3 to
5 ft. 
.tonight...southwest winds 10 to 20 kt becoming northwest 10 to
15 kt. snow likely in the evening, then chance of snow overnight.
waves 3 to 5 ft subsiding to 2 to 4 ft. 
.tuesday...west winds 10 to 15 kt increasing to 10 to 20 kt late
in the morning, then becoming west 10 to 20 kt early in the
afternoon becoming southwest 15 to 25 kt late. waves 2 to 4 ft. 
.tuesday night...southwest winds to 30 kt increasing to gales to
35 kt. chance of snow overnight. waves 4 to 7 ft occasionally to
9 ft building to 7 to 10 ft occasionally to 13 ft. 
.wednesday...west winds to 30 kt becoming northwest. snow in the
morning, then snow likely in the afternoon. waves 8 to 11 ft
occasionally to 14 ft subsiding to 6 to 9 ft occasionally to
12 ft. 
.wednesday night...northwest winds to 30 kt. freezing spray.
chance of snow. waves 5 to 8 ft occasionally to 10 ft. 
.thursday...northwest winds to 30 kt becoming west 10 to 20 kt.
waves 4 to 7 ft occasionally to 9 ft subsiding to 3 to 5 ft. 
.friday...southwest winds to 30 kt. chance of snow. waves 6 to
9 ft occasionally to 12 ft.  

$$

fzus63 kmkx 010821
glflm 
expires:202512011615;;809531

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
221 am cst mon dec 1 2025

for waters beyond five nautical miles of shore on lake michigan.

waves are provided as a range of significant wave heights, which
is the average of the highest 1/3 of the wave, along with the
average height of the highest 10% of the waves which will
occasionally be encountered.

.synopsis...

light and variable winds this morning will turn southerly by this
afternoon as high pressure of 30.5 inches moves into the
northeast. light west to southwest winds are expected late tonight
and tuesday as another area of high pressure moves through the
ohio valley. 

a strong cold front will move across the lake wednesday and
wednesday night. gusty winds are expected, though for now, they
are expected to remain just below gale force. very cold air with
this system will result in a risk for freezing spray wednesday and
thursday. 


lmz080-669-671-673-675-777-779-870-872-874-876-878-011615-
lake michigan from michigan city in to st. joseph mi 5 nm
offshore to mid lake-
lake michigan from sheboygan to port washington wi 5 nm offshore
to mid lake-
lake michigan from port washington to north point light wi 5 nm
offshore to mid lake-
lake michigan from north point light to wind point wi 5 nm
offshore to mid lake-
lake michigan from wind point wi to winthrop harbor il 5 nm
offshore to mid lake-
lake michigan from winthrop harbor to wilmette harbor il 5 nm
offshore to mid lake-
lake michigan from wilmette harbor il to michigan city in 5 nm
offshore to mid lake-
lake michigan from whitehall to pentwater mi 5 nm offshore to mid
lake-
lake michigan from grand haven to whitehall mi 5 nm offshore to
mid lake-
lake michigan from holland to grand haven mi 5 nm offshore to mid
lake-
lake michigan from south haven to holland mi 5 nm offshore to mid
lake-
lake michigan from st. joseph to south haven mi 5 nm offshore to
mid lake-
221 am cst mon dec 1 2025

sheboygan wi to pentwater mi south...

.today...southwest winds 10 to 15 kt increasing to 10 to 20 kt.
chance of snow. waves 2 to 4 ft. 
.tonight...southwest winds 10 to 20 kt veering to northwest. snow
in the evening, then chance of snow overnight. waves 3 to 5 ft. 
.tuesday...northwest winds 10 to 20 kt becoming southwest. chance
of snow. waves 2 to 4 ft. 
.tuesday night...southwest winds 15 to 25 kt increasing to 30 kt.
chance of snow. waves 5 to 8 ft occasionally to 10 ft building to
8 to 12 ft occasionally to 16 ft. 
.wednesday...southwest winds to 30 kt becoming west. chance of
snow in the morning, then snow likely in the afternoon. waves
8 to 12 ft occasionally to 16 ft subsiding to 8 to 11 ft
occasionally to 14 ft. 
.wednesday night...northwest winds to 30 kt. chance of snow.
waves 7 to 10 ft occasionally to 13 ft. 
.thursday...northwest winds 15 to 25 kt becoming west 10 to
20 kt. waves 7 to 10 ft occasionally to 13 ft subsiding to 4 to
7 ft occasionally to 9 ft. 
.friday...southwest winds to 30 kt. chance of snow. waves 7 to
10 ft occasionally to 13 ft.  

$$

fzus63 kmqt 010948
glfls 
expires:202512011800;;814746

open lake forecast for lake superior
national weather service marquette mi
448 am est mon dec 1 2025

for waters beyond 5 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.

.synopsis...

a 30.4 inch low over the lower great lakes this morning monday will 
move to new england by this evening while a weak 30.0 inch trough 
descends over lake superior from northern ontario. as the trough 
deepens to 29.9 inches on tuesday, a 29.7 inch low dives through 
southern saskatchewan into the northern plains. the low weakens 
slightly to 29.8 inches tuesday evening as it approaches lake 
superior. by wednesday afternoon, the low deepens to 29.6 inches 
south of james bay while a 30.5 inch high builds over the high 
plains. the high shifts over the central plains thursday morning 
before moving between the great lakes and ohio river valley thursday 
evening. the high arrives over the mid-atlantic states on friday as 
troughing down to 29.7 inches develops over lake superior.



lsz162-011800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
448 am est mon dec 1 2025 /348 am cst mon dec 1 2025/

.early this morning...west winds 15 to 25 knots. a chance of snow
showers. waves 2 to 4 feet. 
.today...west winds 15 to 25 knots backing southwest. a chance of
snow showers. waves building to 4 to 7 feet occasionally to
9 feet. 
.tonight...west winds 15 to 25 knots diminishing to 10 to
20 knots by midnight. a chance of snow showers. waves subsiding
to 1 to 3 feet. 
.tuesday...west winds 10 to 20 knots becoming southwest 15 to
25 knots. a slight chance of snow showers. waves subsiding to
calm to 2 feet, then building to 2 to 4 feet. 
.tuesday night...southwest winds 15 to 25 knots veering west
after midnight. snow showers likely. waves building to 3 to
5 feet occasionally to 7 feet, then subsiding to 2 to 4 feet. 
.wednesday...northwest winds 20 to 30 knots. waves building to
3 to 5 feet occasionally to 7 feet. 
.wednesday night...northwest winds 15 to 25 knots. waves
subsiding to 2 to 4 feet. 
.thursday...southwest winds 20 to 30 knots. a chance of snow
showers. waves building to 3 to 6 feet occasionally to 8 feet. 
.friday...west winds 10 to 20 knots veering northwest. a chance
of snow showers. waves subsiding to calm to 2 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 010948
glfls 
expires:202512011800;;814747

open lake forecast for lake superior
national weather service marquette mi
448 am est mon dec 1 2025

for waters beyond 5 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.

.synopsis...

a 30.4 inch low over the lower great lakes this morning monday will 
move to new england by this evening while a weak 30.0 inch trough 
descends over lake superior from northern ontario. as the trough 
deepens to 29.9 inches on tuesday, a 29.7 inch low dives through 
southern saskatchewan into the northern plains. the low weakens 
slightly to 29.8 inches tuesday evening as it approaches lake 
superior. by wednesday afternoon, the low deepens to 29.6 inches 
south of james bay while a 30.5 inch high builds over the high 
plains. the high shifts over the central plains thursday morning 
before moving between the great lakes and ohio river valley thursday 
evening. the high arrives over the mid-atlantic states on friday as 
troughing down to 29.7 inches develops over lake superior.



lsz263-011800-
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-
448 am est mon dec 1 2025

.early this morning...west winds 15 to 25 knots. a chance of snow
showers. waves 3 to 5 feet occasionally to 7 feet. 
.today...southwest winds 20 to 30 knots. a chance of snow
showers. waves building to 5 to 9 feet occasionally to 11 feet. 
.tonight...west winds 15 to 25 knots diminishing to 10 to
20 knots by midnight. a chance of snow showers in the evening.
snow showers likely after midnight. waves subsiding to 2 to
4 feet. 
.tuesday...west winds 10 to 20 knots becoming southwest 15 to
25 knots. a chance of snow showers. waves subsiding to 1 to
3 feet, then building to 2 to 4 feet. 
.tuesday night...southwest winds 20 to 30 knots becoming west
15 to 25 knots after midnight. snow showers likely. waves
building to 4 to 7 feet occasionally to 9 feet. 
.wednesday...northwest winds 20 to 30 knots increasing to gales
to 35 knots in the afternoon. a chance of snow showers. freezing
spray in the afternoon. waves building to 5 to 8 feet
occasionally to 10 feet. 
.wednesday night...northwest gales to 35 knots diminishing to
20 to 30 knots after midnight. freezing spray. waves subsiding to
4 to 7 feet occasionally to 9 feet. 
.thursday...west winds 20 to 30 knots becoming southwest gales to
35 knots. a chance of snow showers. freezing spray. waves
subsiding to 3 to 6 feet occasionally to 8 feet, then building to
5 to 8 feet occasionally to 10 feet. 
.friday...west winds 15 to 25 knots becoming northwest 10 to
20 knots. a chance of snow showers. waves subsiding to 2 to
4 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 010948
glfls 
expires:202512011800;;814748

open lake forecast for lake superior
national weather service marquette mi
448 am est mon dec 1 2025

for waters beyond 5 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.

.synopsis...

a 30.4 inch low over the lower great lakes this morning monday will 
move to new england by this evening while a weak 30.0 inch trough 
descends over lake superior from northern ontario. as the trough 
deepens to 29.9 inches on tuesday, a 29.7 inch low dives through 
southern saskatchewan into the northern plains. the low weakens 
slightly to 29.8 inches tuesday evening as it approaches lake 
superior. by wednesday afternoon, the low deepens to 29.6 inches 
south of james bay while a 30.5 inch high builds over the high 
plains. the high shifts over the central plains thursday morning 
before moving between the great lakes and ohio river valley thursday 
evening. the high arrives over the mid-atlantic states on friday as 
troughing down to 29.7 inches develops over lake superior.



lsz264-011800-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
448 am est mon dec 1 2025

.early this morning...west winds 15 to 25 knots. a chance of snow
showers. waves 2 to 4 feet building to 3 to 5 feet occasionally
to 7 feet. 
.today...west winds 20 to 30 knots. snow showers likely in the
morning, then a chance of snow showers in the afternoon. waves
building to 6 to 9 feet occasionally to 11 feet. 
.tonight...west winds 15 to 25 knots diminishing to 10 to
20 knots by midnight, then veering northwest late. snow showers
likely. waves subsiding to 2 to 4 feet. 
.tuesday...west winds 10 to 20 knots becoming southwest 15 to
25 knots. a chance of snow showers. waves subsiding to 1 to
3 feet, then building to 2 to 4 feet. 
.tuesday night...southwest winds 15 to 25 knots becoming west
20 to 30 knots after midnight. snow showers. waves building to
5 to 8 feet occasionally to 10 feet. 
.wednesday...northwest winds 20 to 30 knots increasing to gales
to 35 knots in the afternoon. freezing spray. a chance of snow
showers. waves building to 7 to 10 feet occasionally to 13 feet. 
.wednesday night...northwest gales to 35 knots diminishing to
20 to 30 knots after midnight. freezing spray. a chance of snow
showers. waves subsiding to 5 to 8 feet occasionally to 10 feet. 
.thursday...west winds 20 to 30 knots backing southwest. freezing
spray. snow showers likely. waves subsiding to 3 to 6 feet
occasionally to 8 feet, then building to 6 to 9 feet occasionally
to 11 feet. 
.friday...west winds 15 to 25 knots becoming northwest 10 to
20 knots. a chance of snow showers. waves subsiding to 2 to
4 feet, then building to 3 to 5 feet occasionally to 7 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 010948
glfls 
expires:202512011800;;814749

open lake forecast for lake superior
national weather service marquette mi
448 am est mon dec 1 2025

for waters beyond 5 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.

.synopsis...

a 30.4 inch low over the lower great lakes this morning monday will 
move to new england by this evening while a weak 30.0 inch trough 
descends over lake superior from northern ontario. as the trough 
deepens to 29.9 inches on tuesday, a 29.7 inch low dives through 
southern saskatchewan into the northern plains. the low weakens 
slightly to 29.8 inches tuesday evening as it approaches lake 
superior. by wednesday afternoon, the low deepens to 29.6 inches 
south of james bay while a 30.5 inch high builds over the high 
plains. the high shifts over the central plains thursday morning 
before moving between the great lakes and ohio river valley thursday 
evening. the high arrives over the mid-atlantic states on friday as 
troughing down to 29.7 inches develops over lake superior.



lsz265-011800-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
448 am est mon dec 1 2025

.early this morning...west winds 20 to 30 knots. a chance of snow
showers. waves 2 to 4 feet. 
.today...southwest winds 20 to 30 knots veering west by mid
afternoon. a slight chance of snow showers in the morning. waves
building to 3 to 6 feet occasionally to 8 feet, then subsiding to
2 to 4 feet. 
.tonight...west winds 20 to 30 knots diminishing to 15 to
25 knots by midnight. a slight chance of snow showers after
midnight. waves subsiding to 1 to 3 feet. 
.tuesday...west winds 15 to 25 knots backing southwest. a slight
chance of snow showers in the morning. waves subsiding to calm to
2 feet. 
.tuesday night...southwest winds 20 to 30 knots veering west
after midnight. a chance of snow showers in the evening, then
snow showers after midnight. waves building to 2 to 4 feet. 
.wednesday...northwest winds 20 to 30 knots increasing to gales
to 35 knots in the afternoon. snow showers. freezing spray in the
afternoon. waves building to 6 to 9 feet occasionally to 11 feet.
.wednesday night...northwest gales to 40 knots. freezing spray.
snow showers likely in the evening. a chance of snow showers
after midnight. waves building to 7 to 10 feet occasionally to
13 feet, then subsiding to 5 to 8 feet occasionally to 10 feet. 
.thursday...west winds 20 to 30 knots backing southwest. freezing
spray. a chance of snow showers, then snow showers likely. waves
subsiding to 2 to 4 feet. 
.friday...southwest winds 15 to 25 knots veering west. a chance
of snow showers. waves subsiding to calm to 2 feet, then building
to 1 to 3 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 010948
glfls 
expires:202512011800;;814750

open lake forecast for lake superior
national weather service marquette mi
448 am est mon dec 1 2025

for waters beyond 5 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.

.synopsis...

a 30.4 inch low over the lower great lakes this morning monday will 
move to new england by this evening while a weak 30.0 inch trough 
descends over lake superior from northern ontario. as the trough 
deepens to 29.9 inches on tuesday, a 29.7 inch low dives through 
southern saskatchewan into the northern plains. the low weakens 
slightly to 29.8 inches tuesday evening as it approaches lake 
superior. by wednesday afternoon, the low deepens to 29.6 inches 
south of james bay while a 30.5 inch high builds over the high 
plains. the high shifts over the central plains thursday morning 
before moving between the great lakes and ohio river valley thursday 
evening. the high arrives over the mid-atlantic states on friday as 
troughing down to 29.7 inches develops over lake superior.



lsz266-011800-
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-
448 am est mon dec 1 2025

.early this morning...west winds 15 to 25 knots. a chance of snow
showers. waves 3 to 6 feet occasionally to 8 feet. 
.today...southwest winds 20 to 30 knots diminishing to 15 to
25 knots by mid afternoon. a chance of snow showers. waves
subsiding to 3 to 5 feet occasionally to 7 feet, then building to
6 to 9 feet occasionally to 11 feet. 
.tonight...west winds 15 to 25 knots. a chance of snow showers.
waves subsiding to 3 to 5 feet occasionally to 7 feet. 
.tuesday...west winds 15 to 25 knots backing southwest. a chance
of snow showers. waves subsiding to 1 to 3 feet. 
.tuesday night...southwest winds 15 to 25 knots increasing to
20 to 30 knots after midnight. a chance of snow showers in the
evening, then snow showers after midnight. waves building to 5 to
8 feet occasionally to 10 feet. 
.wednesday...northwest winds 20 to 30 knots increasing to gales
to 35 knots in the afternoon. snow showers. freezing spray in the
afternoon. waves building to 10 to 14 feet occasionally to
18 feet. 
.wednesday night...northwest gales to 35 knots. freezing spray.
snow showers. waves subsiding to 9 to 12 feet occasionally to
15 feet. 
.thursday...northwest winds 20 to 30 knots backing southwest.
freezing spray. a chance of snow showers. snow showers likely.
waves subsiding to 4 to 7 feet occasionally to 9 feet. 
.friday...southwest winds 15 to 25 knots veering west. a chance
of snow showers, then snow showers likely. waves subsiding to
3 to 5 feet occasionally to 7 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 010948
glfls 
expires:202512011800;;814751

open lake forecast for lake superior
national weather service marquette mi
448 am est mon dec 1 2025

for waters beyond 5 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.

.synopsis...

a 30.4 inch low over the lower great lakes this morning monday will 
move to new england by this evening while a weak 30.0 inch trough 
descends over lake superior from northern ontario. as the trough 
deepens to 29.9 inches on tuesday, a 29.7 inch low dives through 
southern saskatchewan into the northern plains. the low weakens 
slightly to 29.8 inches tuesday evening as it approaches lake 
superior. by wednesday afternoon, the low deepens to 29.6 inches 
south of james bay while a 30.5 inch high builds over the high 
plains. the high shifts over the central plains thursday morning 
before moving between the great lakes and ohio river valley thursday 
evening. the high arrives over the mid-atlantic states on friday as 
troughing down to 29.7 inches develops over lake superior.



lsz267-011800-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
448 am est mon dec 1 2025

.early this morning...west winds 15 to 25 knots. a chance of snow
showers. waves 3 to 6 feet occasionally to 8 feet. 
.today...southwest winds 15 to 25 knots increasing to 20 to
30 knots. a chance of snow showers. waves subsiding to 3 to
5 feet occasionally to 7 feet, then building to 4 to 7 feet
occasionally to 9 feet. 
.tonight...southwest winds 20 to 30 knots becoming west 15 to
25 knots by midnight. a chance of snow showers. waves subsiding
to 3 to 5 feet occasionally to 7 feet. 
.tuesday...southwest winds 10 to 20 knots increasing to 15 to
25 knots by mid afternoon. a chance of snow showers. waves
subsiding to 2 to 4 feet. 
.tuesday night...southwest winds 20 to 30 knots. a chance of snow
showers in the evening, then snow showers after midnight. waves
building to 4 to 7 feet occasionally to 9 feet. 
.wednesday...west winds 20 to 30 knots becoming northwest gales
to 35 knots in the afternoon. snow showers. waves building to
9 to 12 feet occasionally to 15 feet. 
.wednesday night...northwest gales to 35 knots diminishing to
20 to 30 knots after midnight. freezing spray. snow showers.
waves building to 10 to 14 feet occasionally to 18 feet, then
subsiding to 9 to 12 feet occasionally to 15 feet. 
.thursday...northwest winds 15 to 25 knots becoming southwest
20 to 30 knots. freezing spray. snow showers. waves subsiding to
5 to 8 feet occasionally to 10 feet. 
.friday...southwest winds 20 to 30 knots diminishing to 15 to
25 knots. snow showers. waves subsiding to 3 to 6 feet
occasionally to 8 feet. 

note, wave height forecasts are for ice free areas.

$$