fzus63 kdtx 231445
glflh 
expires:202511232245;;367578

open lake forecast for lake huron
national weather service detroit/pontiac mi
945 am est sun nov 23 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...as a cold front exits the central great lakes,
northwest wind gusts increase to 35 knot gales across the north
half of lake huron this morning. these winds quickly diminish by
this evening as a ridge of high pressure, 30.20 inches, moves
into the region.


lhz363-462>464-232245-
lake huron from sturgeon point to alabaster mi beyond 5nm off
shore-
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-
945 am est sun nov 23 2025

.rest of today...west winds 20 to 25 knots with gusts to around
30 knots. waves 6 to 9 feet. waves occasionally around 12 feet. 
.tonight...northwest winds 15 to 20 knots becoming west 5 to
10 knots. waves 6 to 9 feet subsiding to 3 to 5 feet after
midnight. waves occasionally around 12 feet. 
.monday...southwest winds 10 to 15 knots becoming south 15 to
20 knots in the late morning and afternoon. waves 2 to 4 feet
building to 4 to 6 feet in the late morning and afternoon. waves
occasionally around 8 feet. 
.monday night...south winds 15 to 20 knots decreasing to 10 to
15 knots in the late evening and overnight. a chance of rain
after midnight. waves 3 to 5 feet. 
.tuesday...south winds 10 to 15 knots decreasing to 5 to 10 knots
late in the morning...then increasing to 10 to 15 knots late in
the evening. rain likely...then a chance of rain late in the
afternoon. waves 1 to 3 feet building to 2 to 4 feet late in the
evening. 
.wednesday...south winds 20 to 25 knots with gusts to around
30 knots becoming southwest to 30 knots with gusts to 40 knot
gales in the late morning and early afternoon...then becoming
west at 40 knot gales until early morning. a chance of rain. a
chance of snow until early evening...then snow likely in the late
evening and early morning. waves 6 to 9 feet building to 14 to
18 feet. waves occasionally around 23 feet. a gale warning may be
needed. 
.thursday...west at 35 knot gales with gusts to 40 knot gales.
snow likely. waves 12 to 16 feet. waves occasionally around
19 feet. 


$$

fzus63 kdtx 231445
glflh 
expires:202511232245;;367577

open lake forecast for lake huron
national weather service detroit/pontiac mi
945 am est sun nov 23 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...as a cold front exits the central great lakes,
northwest wind gusts increase to 35 knot gales across the north
half of lake huron this morning. these winds quickly diminish by
this evening as a ridge of high pressure, 30.20 inches, moves
into the region.


lhz361-362-232245-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
lake huron from presque isle light to sturgeon point mi beyond
5nm off shore-
945 am est sun nov 23 2025

...gale warning in effect until 4 pm est this afternoon...

.rest of today...northwest winds 20 to 25 knots with gusts to
35 knot gales. waves 8 to 12 feet. waves occasionally around
15 feet. 
.tonight...northwest winds 15 to 20 knots becoming west 10 to
15 knots late in the evening...then becoming southwest 5 to
10 knots after midnight. waves 6 to 9 feet subsiding to 2 to
4 feet. waves occasionally around 12 feet. 
.monday...southwest winds 10 to 15 knots becoming south 15 to
20 knots in the late morning and early afternoon...then
decreasing to 10 to 15 knots early in the afternoon. waves 2 to
4 feet building to 4 to 6 feet in the late morning and afternoon.
waves occasionally around 8 feet. 
.monday night...south winds 10 to 15 knots decreasing to 5 to
10 knots in the late evening and overnight. a chance of rain.
waves 3 to 5 feet. 
.tuesday...south winds 5 to 10 knots increasing to 10 to 15 knots
late in the evening. rain likely...then a chance of rain late in
the afternoon. rain likely late in the evening. waves 2 to 4 feet
subsiding to 1 to 3 feet. 
.wednesday...south winds 15 to 20 knots becoming southwest to
30 knots with gusts to 40 knot gales in the late morning and
early afternoon...then becoming west at 35 knot gales with gusts
to 40 knot gales until early morning. rain likely early in the
morning. snow. waves 6 to 9 feet building to 12 to 16 feet. waves
occasionally around 20 feet. a gale warning may be needed. 
.thursday...west at 35 knot gales decreasing to 30 knots in the
late morning and early afternoon...then becoming northwest at
35 knot gales early in the evening decreasing to 30 knots in the
late evening and early morning. snow likely...then a chance of
snow in the late evening and early morning. waves 12 to 16 feet.
waves occasionally around 20 feet. 


$$

fzus63 kmkx 231435
glflm 
expires:202511232215;;367178

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
835 am cst sun nov 23 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...

winds will diminish this morning as high pressure around 30.2 
inches builds into the region. expect southerly winds to increase 
tomorrow as low pressure around 29.8 inches develops in the 
middle mississippi valley. southerly winds will continue into 
tuesday as low pressure deepens to 29.6 inches over minnesota. 
tuesday night, a cold front from this low will surge eastward 
across the lake as the low continues to deepen, bringing westerly 
gales by wednesday morning. westerly gales will become 
northwesterly wednesday night, continuing into thursday morning 
before diminishing as low pressure finally lifts northward into 
northern quebec.


lmz080-669-671-673-675-777-779-870-872-874-876-878-232215-
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-
835 am cst sun nov 23 2025

sheboygan wi to pentwater mi south...

.rest of today...northwest winds 10 to 20 kt becoming west 10 to
15 kt. waves 4 to 7 ft occasionally to 9 ft subsiding to 2 to
4 ft. 
.tonight...southwest winds 5 to 10 kt increasing to 10 to 20 kt.
waves 1 to 3 ft. 
.monday...south winds 15 to 25 kt. waves 3 to 5 ft building to
4 to 7 ft occasionally to 9 ft. 
.monday night...south winds 10 to 20 kt. rain likely in the
evening, then rain overnight. waves 4 to 7 ft occasionally to
9 ft subsiding to 3 to 5 ft. 
.tuesday...south winds 10 to 15 kt becoming southwest. chance of
rain. waves 2 to 4 ft subsiding to 1 to 3 ft. 
.tuesday night...southwest winds 15 to 25 kt becoming west gales
to 35 kt. chance of rain. waves 2 to 4 ft building to 6 to 9 ft
occasionally to 12 ft. 
.wednesday...west gales to 45 kt. chance of rain and snow. waves
10 to 14 ft occasionally to 18 ft. 
.thursday...northwest gales to 35 kt. chance of snow. waves 8 to
11 ft occasionally to 14 ft.  

$$

fzus63 kmkx 231435
glflm 
expires:202511232215;;367177

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
835 am cst sun nov 23 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...

winds will diminish this morning as high pressure around 30.2 
inches builds into the region. expect southerly winds to increase 
tomorrow as low pressure around 29.8 inches develops in the 
middle mississippi valley. southerly winds will continue into 
tuesday as low pressure deepens to 29.6 inches over minnesota. 
tuesday night, a cold front from this low will surge eastward 
across the lake as the low continues to deepen, bringing westerly 
gales by wednesday morning. westerly gales will become 
northwesterly wednesday night, continuing into thursday morning 
before diminishing as low pressure finally lifts northward into 
northern quebec.


lmz261-362-364-366-563-565-567-868-232215-
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-
835 am cst sun nov 23 2025

sheboygan wi to pentwater mi north...

.rest of today...northwest winds 15 to 25 kt becoming west 10 to
20 kt. waves 4 to 6 ft occasionally to 8 ft subsiding to 2 to
4 ft. 
.tonight...west winds 10 to 15 kt becoming southwest late in the
evening, then increasing to 10 to 20 kt after midnight increasing
to 15 to 25 kt late. waves 1 to 3 ft building to 2 to 4 ft. 
.monday...southwest winds to 30 kt diminishing to 15 to 25 kt.
waves 3 to 5 ft building to 4 to 7 ft occasionally to 9 ft. 
.monday night...southwest winds 10 to 20 kt becoming south 10 to
15 kt. rain likely. waves 4 to 7 ft occasionally to 9 ft
subsiding to 3 to 5 ft. 
.tuesday...south winds 10 to 15 kt. rain likely. waves 2 to 4 ft.
.tuesday night...south winds 10 to 20 kt becoming southwest gales
to 35 kt. rain. waves 2 to 4 ft building to 5 to 8 ft
occasionally to 10 ft. 
.wednesday...west gales to 40 kt becoming northwest gales to
45 kt. snow likely. waves 8 to 11 ft occasionally to 14 ft. 
.thursday...northwest gales to 35 kt. chance of snow. waves 7 to
10 ft occasionally to 13 ft.  

$$

fzus63 kmqt 231500
glfls 
expires:202511232100;;368117

open lake forecast for lake superior
national weather service marquette mi
1000 am est sun nov 23 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 29.8 inch trough currently resides on the quebec/ontario lines 
south of james bay, dissipating as it tracks east today. meanwhile, 
a 30.2 inch high passing south of the great lakes today will result 
in a 30.0 inch ridge passing over the lake today. in its wake, a 
29.8 inch truogh will pass just north of lake superior tonight 
through monday. monday night into tuesday, a 29.8 inch low will 
organize just west of the great lakes, deepening to 29.6 inches 
tuesday night over the michigan upper peninsula and passing over 
eastern lake superior at 29.4 inches wednesday. this low deepens 
further to 29.3 inches over quebec thursday while 30.5 inch high 
pressure builds over the northern great plains. this high moves over 
lake superior friday into the weekend.



lsz265-232100-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
1000 am est sun nov 23 2025

.rest of today...northwest winds 20 to 30 knots diminishing to
15 to 25 knots by late morning, then becoming west 10 to 20 knots
by mid afternoon. waves 4 to 7 feet occasionally to 9 feet
subsiding to 1 to 3 feet. 
.tonight...southwest winds 5 to 15 knots becoming south 10 to
20 knots by midnight, then veering southwest late. waves
subsiding to calm to 2 feet, then building to 1 to 3 feet. 
.monday...southwest winds 10 to 20 knots veering west by late
morning, then becoming northwest 5 to 15 knots by mid afternoon.
waves subsiding to calm to 2 feet. 
.monday night...north winds 5 to 15 knots veering northeast after
midnight. a chance of rain. waves calm to 2 feet. 
.tuesday...northeast winds 5 to 15 knots becoming east 10 to
20 knots in the afternoon. a chance of rain in the morning, then
rain likely in the afternoon. waves building to 1 to 3 feet. 
.tuesday night...east winds 15 to 25 knots becoming northeast
gales to 35 knots after midnight. rain. snow after midnight.
waves building to 5 to 8 feet occasionally to 10 feet. 
.wednesday...northwest gales to 40 knots. rain. snow showers.
waves building to 10 to 14 feet occasionally to 18 feet, then
subsiding to 8 to 11 feet occasionally to 14 feet. 
.thursday...northwest gales to 40 knots diminishing to 20 to
30 knots. snow showers likely, then a chance of snow showers.
waves subsiding to 3 to 6 feet occasionally to 8 feet. 

$$

fzus63 kmqt 231500
glfls 
expires:202511232100;;368118

open lake forecast for lake superior
national weather service marquette mi
1000 am est sun nov 23 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 29.8 inch trough currently resides on the quebec/ontario lines 
south of james bay, dissipating as it tracks east today. meanwhile, 
a 30.2 inch high passing south of the great lakes today will result 
in a 30.0 inch ridge passing over the lake today. in its wake, a 
29.8 inch truogh will pass just north of lake superior tonight 
through monday. monday night into tuesday, a 29.8 inch low will 
organize just west of the great lakes, deepening to 29.6 inches 
tuesday night over the michigan upper peninsula and passing over 
eastern lake superior at 29.4 inches wednesday. this low deepens 
further to 29.3 inches over quebec thursday while 30.5 inch high 
pressure builds over the northern great plains. this high moves over 
lake superior friday into the weekend.



lsz266-232100-
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-
1000 am est sun nov 23 2025

.rest of today...northwest winds to 30 knots with a few gale
force gusts to 35 knots possible diminishing to 10 to 20 knots.
waves 9 to 12 feet occasionally to 15 feet subsiding to 3 to
6 feet occasionally to 8 feet. 
.tonight...southwest winds 10 to 20 knots backing south by
midnight, then increasing to 15 to 25 knots late. waves subsiding
to 1 to 3 feet, then building to 2 to 4 feet. 
.monday...southwest winds 15 to 25 knots diminishing to 10 to
20 knots by late morning, then becoming west 5 to 15 knots by mid
afternoon. a slight chance of. waves building to 3 to 5 feet
occasionally to 7 feet, then subsiding to 1 to 3 feet. 
.monday night...north winds 5 to 15 knots veering northeast after
midnight. a chance of rain. waves subsiding to calm to 2 feet. 
.tuesday...east winds 5 to 15 knots increasing to 10 to 20 knots
in the afternoon. a chance of rain in the morning, then rain in
the afternoon. waves building to 1 to 3 feet. 
.tuesday night...east winds 15 to 25 knots increasing to gales to
35 knots after midnight. rain. snow after midnight. waves
building to 6 to 9 feet occasionally to 11 feet. 
.wednesday...northwest gales to 45 knots. rain. snow showers.
waves building to 12 to 17 feet occasionally to 21 feet, then
subsiding to 10 to 14 feet occasionally to 18 feet. 
.thursday...northwest gales to 35 knots. snow showers. waves
subsiding to 5 to 8 feet occasionally to 10 feet. 

$$

fzus63 kmqt 231500
glfls 
expires:202511232100;;368119

open lake forecast for lake superior
national weather service marquette mi
1000 am est sun nov 23 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 29.8 inch trough currently resides on the quebec/ontario lines 
south of james bay, dissipating as it tracks east today. meanwhile, 
a 30.2 inch high passing south of the great lakes today will result 
in a 30.0 inch ridge passing over the lake today. in its wake, a 
29.8 inch truogh will pass just north of lake superior tonight 
through monday. monday night into tuesday, a 29.8 inch low will 
organize just west of the great lakes, deepening to 29.6 inches 
tuesday night over the michigan upper peninsula and passing over 
eastern lake superior at 29.4 inches wednesday. this low deepens 
further to 29.3 inches over quebec thursday while 30.5 inch high 
pressure builds over the northern great plains. this high moves over 
lake superior friday into the weekend.



lsz267-232100-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
1000 am est sun nov 23 2025

...gale warning in effect until noon est today...

.rest of today...northwest gales to 40 knots diminishing to 15 to
25 knots by mid afternoon. a slight chance of rain showers late
in the morning. waves 10 to 14 feet occasionally to 18 feet
subsiding to 4 to 7 feet occasionally to 9 feet. 
.tonight...west winds 10 to 20 knots backing south by midnight,
then increasing to 15 to 25 knots late. waves subsiding to 1 to
3 feet, then building to 2 to 4 feet. 
.monday...southwest winds 15 to 25 knots diminishing to 10 to
20 knots by mid afternoon. waves building to 3 to 5 feet
occasionally to 7 feet, then subsiding to 1 to 3 feet. 
.monday night...southwest winds 5 to 15 knots backing southeast
after midnight. a chance of rain in the evening, then rain likely
after midnight. waves subsiding to calm to 2 feet. 
.tuesday...east winds 10 to 20 knots. rain. waves calm to 2 feet.
.tuesday night...east winds 15 to 25 knots becoming southeast
20 to 30 knots after midnight. rain. waves building to 3 to
6 feet occasionally to 8 feet. 
.wednesday...northwest gales to 35 knots. rain. snow showers.
waves building to 10 to 14 feet occasionally to 18 feet. 
.thursday...northwest gales to 35 knots diminishing to 20 to
30 knots. snow showers. waves subsiding to 9 to 12 feet
occasionally to 15 feet, then building to 10 to 14 feet
occasionally to 18 feet. 

$$

fzus63 kmqt 231500
glfls 
expires:202511232100;;368114

open lake forecast for lake superior
national weather service marquette mi
1000 am est sun nov 23 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 29.8 inch trough currently resides on the quebec/ontario lines 
south of james bay, dissipating as it tracks east today. meanwhile, 
a 30.2 inch high passing south of the great lakes today will result 
in a 30.0 inch ridge passing over the lake today. in its wake, a 
29.8 inch truogh will pass just north of lake superior tonight 
through monday. monday night into tuesday, a 29.8 inch low will 
organize just west of the great lakes, deepening to 29.6 inches 
tuesday night over the michigan upper peninsula and passing over 
eastern lake superior at 29.4 inches wednesday. this low deepens 
further to 29.3 inches over quebec thursday while 30.5 inch high 
pressure builds over the northern great plains. this high moves over 
lake superior friday into the weekend.



lsz162-232100-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1000 am est sun nov 23 2025 /900 am cst sun nov 23 2025/

.rest of today...west winds 10 to 20 knots becoming southwest
5 to 15 knots by mid afternoon. waves 1 to 3 feet subsiding to
calm to 2 feet. 
.tonight...south winds 5 to 15 knots veering southwest by
midnight, then increasing to 10 to 20 knots late. waves building
to 1 to 3 feet. 
.monday...west winds 10 to 20 knots diminishing to 5 to 15 knots.
waves subsiding to calm to 2 feet. 
.monday night...northeast winds 5 to 15 knots. a slight chance of
rain. waves calm to 2 feet. 
.tuesday...northeast winds 10 to 20 knots increasing to 15 to
25 knots in the afternoon. a chance of rain in the morning, then
rain in the afternoon. waves building to 2 to 4 feet. 
.tuesday night...northeast winds 20 to 30 knots becoming north
gales to 35 knots after midnight. rain in the evening. snow.
waves building to 5 to 8 feet occasionally to 10 feet. 
.wednesday...northwest gales to 35 knots diminishing to 20 to
30 knots. snow likely, then a chance of snow showers. waves
subsiding to 3 to 5 feet occasionally to 7 feet. 
.thursday...northwest winds 15 to 25 knots diminishing to 10 to
20 knots. waves subsiding to calm to 2 feet. 

$$

fzus63 kmqt 231500
glfls 
expires:202511232100;;368115

open lake forecast for lake superior
national weather service marquette mi
1000 am est sun nov 23 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 29.8 inch trough currently resides on the quebec/ontario lines 
south of james bay, dissipating as it tracks east today. meanwhile, 
a 30.2 inch high passing south of the great lakes today will result 
in a 30.0 inch ridge passing over the lake today. in its wake, a 
29.8 inch truogh will pass just north of lake superior tonight 
through monday. monday night into tuesday, a 29.8 inch low will 
organize just west of the great lakes, deepening to 29.6 inches 
tuesday night over the michigan upper peninsula and passing over 
eastern lake superior at 29.4 inches wednesday. this low deepens 
further to 29.3 inches over quebec thursday while 30.5 inch high 
pressure builds over the northern great plains. this high moves over 
lake superior friday into the weekend.



lsz263-232100-
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-
1000 am est sun nov 23 2025

.rest of today...northwest winds 10 to 20 knots backing west by
late morning, then becoming southwest 5 to 15 knots by mid
afternoon. waves 3 to 5 feet occasionally to 7 feet subsiding to
1 to 3 feet. 
.tonight...south winds 5 to 15 knots becoming southwest 10 to
20 knots late. waves subsiding to calm to 2 feet, then building
to 2 to 4 feet. 
.monday...southwest winds 10 to 20 knots veering west by late
morning, then diminishing to 5 to 15 knots by mid afternoon.
waves subsiding to calm to 2 feet. 
.monday night...northeast winds 5 to 15 knots. a slight chance of
rain. waves calm to 2 feet. 
.tuesday...northeast winds 10 to 20 knots increasing to 15 to
25 knots in the afternoon. a chance of rain in the morning, then
rain likely in the afternoon. waves building to 2 to 4 feet. 
.tuesday night...northeast winds 20 to 30 knots becoming north
gales to 35 knots after midnight. rain and snow. waves building
to 8 to 11 feet occasionally to 14 feet. 
.wednesday...north gales to 40 knots becoming northwest gales to
35 knots. snow showers likely, then a chance of snow showers.
waves building to 9 to 12 feet occasionally to 15 feet, then
subsiding to 6 to 9 feet occasionally to 11 feet. 
.thursday...northwest gales to 35 knots diminishing to 20 to
30 knots. a chance of snow showers. waves subsiding to 3 to
5 feet occasionally to 7 feet. 

$$

fzus63 kmqt 231500
glfls 
expires:202511232100;;368116

open lake forecast for lake superior
national weather service marquette mi
1000 am est sun nov 23 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 29.8 inch trough currently resides on the quebec/ontario lines 
south of james bay, dissipating as it tracks east today. meanwhile, 
a 30.2 inch high passing south of the great lakes today will result 
in a 30.0 inch ridge passing over the lake today. in its wake, a 
29.8 inch truogh will pass just north of lake superior tonight 
through monday. monday night into tuesday, a 29.8 inch low will 
organize just west of the great lakes, deepening to 29.6 inches 
tuesday night over the michigan upper peninsula and passing over 
eastern lake superior at 29.4 inches wednesday. this low deepens 
further to 29.3 inches over quebec thursday while 30.5 inch high 
pressure builds over the northern great plains. this high moves over 
lake superior friday into the weekend.



lsz264-232100-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
1000 am est sun nov 23 2025

.rest of today...northwest winds 15 to 25 knots becoming west
5 to 15 knots by mid afternoon. waves 4 to 7 feet occasionally to
9 feet subsiding to 1 to 3 feet. 
.tonight...southwest winds 5 to 15 knots backing south by
midnight, then veering southwest late. waves subsiding to calm to
2 feet, then building to 2 to 4 feet. 
.monday...southwest winds 10 to 20 knots veering west by late
morning, then becoming northwest 5 to 15 knots by mid afternoon.
waves subsiding to 1 to 3 feet. 
.monday night...north winds 5 to 15 knots veering northeast after
midnight. a slight chance of rain after midnight. waves subsiding
to calm to 2 feet. 
.tuesday...northeast winds 5 to 15 knots increasing to 10 to
20 knots in the afternoon. a chance of rain. waves building to
2 to 4 feet. 
.tuesday night...northeast winds 20 to 30 knots increasing to
gales to 40 knots after midnight. rain and snow. waves building
to 8 to 11 feet occasionally to 14 feet. 
.wednesday...north gales to 40 knots backing northwest. snow,
then a chance of snow showers. waves building to 10 to 14 feet
occasionally to 18 feet, then subsiding to 8 to 11 feet
occasionally to 14 feet. 
.thursday...northwest gales to 35 knots diminishing to 20 to
30 knots. a chance of snow showers. waves subsiding to 3 to
6 feet occasionally to 8 feet. 

$$