fzus63 kdtx 020052
glflh 
expires:202610020900;;383986

open lake forecast for lake huron
national weather service detroit/pontiac mi
852 pm edt thu oct 1 2026

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...a cold front averaging 29.90 inches will exit to the
east of the lower great lakes friday morning. high pressure, 
30.30 inches, will move from the upper midwest friday to lake 
huron and southern ontario by saturday. this high will quickly 
exit east of the region by sunday. a low pressure system tracking 
across northern ontario into northern quebec will then drive a 
cold front across the region sunday.


lhz361-020900-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
852 pm edt thu oct 1 2026

.rest of tonight...northwest winds 15 to 20 knots. gusts to
30 knots this evening. waves 3 to 5 feet. 
.friday...northwest winds 15 to 20 knots. gusts to 30 knots late
in the afternoon. waves 4 to 6 feet. waves occasionally around
8 feet. 
.friday night...northwest winds 15 to 20 knots with gusts to
around 30 knots decreasing to 5 to 10 knots. waves 4 to 6 feet
subsiding to 1 to 3 feet after midnight. waves occasionally
around 8 feet. 
.saturday...light and variable winds. waves 2 feet or less. 
.saturday night...southeast winds 5 to 10 knots becoming south
10 to 15 knots in the late evening and overnight. a chance of
showers after midnight. waves 1 to 3 feet. 
.sunday...southwest winds 15 to 20 knots with gusts to around
30 knots becoming northwest 20 to 25 knots with gusts to 35 knot
gales late in the afternoon. a chance of showers. waves 2 to
4 feet building to 5 to 7 feet late in the afternoon. waves
occasionally around 10 feet. 
.monday...northwest winds 15 to 20 knots with gusts to around
30 knots decreasing to 5 to 10 knots by midnight. waves 4 to
6 feet subsiding to 2 to 4 feet by midnight. waves occasionally
around 8 feet. 
.tuesday...light and variable winds becoming south 5 to 10 knots
until early evening...then increasing to 10 to 15 knots by
midnight. waves 2 feet or less. 


$$

fzus63 kdtx 020052
glflh 
expires:202610020900;;383987

open lake forecast for lake huron
national weather service detroit/pontiac mi
852 pm edt thu oct 1 2026

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...a cold front averaging 29.90 inches will exit to the
east of the lower great lakes friday morning. high pressure, 
30.30 inches, will move from the upper midwest friday to lake 
huron and southern ontario by saturday. this high will quickly 
exit east of the region by sunday. a low pressure system tracking 
across northern ontario into northern quebec will then drive a 
cold front across the region sunday.


lhz362-363-020900-
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-
852 pm edt thu oct 1 2026

.rest of tonight...northwest winds 15 to 20 knots with gusts to
around 30 knots increasing to 20 to 25 knots with gusts to around
30 knots after midnight...then decreasing to 15 to 20 knots early
in the morning. a chance of showers this evening. waves 5 to
7 feet. waves occasionally around 10 feet. 
.friday...northwest winds 15 to 20 knots increasing to 20 to
25 knots with gusts to around 30 knots in the late morning and
afternoon. waves 6 to 9 feet. waves occasionally around 12 feet. 
.friday night...northwest winds 20 to 25 knots with gusts to
around 30 knots decreasing to 10 to 15 knots. waves 5 to 7 feet.
waves occasionally around 10 feet. 
.saturday...north winds 5 to 10 knots early in the morning
becoming light and variable. waves 1 to 3 feet. 
.saturday night...light and variable winds becoming southeast
5 to 10 knots by midnight...then becoming south 10 to 15 knots
after midnight. waves 2 feet or less. 
.sunday...south winds 10 to 15 knots becoming southwest 15 to
20 knots late in the morning...then becoming northwest 20 to
25 knots with gusts to around 30 knots late in the afternoon. a
chance of showers late in the morning. waves 2 to 4 feet building
to 6 to 9 feet late in the afternoon. waves occasionally around
12 feet. 
.monday...northwest winds 20 to 25 knots with gusts to around
30 knots decreasing to 10 to 15 knots. waves 5 to 7 feet. waves
occasionally around 10 feet. 
.tuesday...west winds 5 to 10 knots becoming south 10 to 15 knots
early in the evening...then increasing to 15 to 20 knots by
midnight. waves 1 to 3 feet building to 3 to 5 feet by midnight. 


$$

fzus63 kdtx 020052
glflh 
expires:202610020900;;383988

open lake forecast for lake huron
national weather service detroit/pontiac mi
852 pm edt thu oct 1 2026

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...a cold front averaging 29.90 inches will exit to the
east of the lower great lakes friday morning. high pressure, 
30.30 inches, will move from the upper midwest friday to lake 
huron and southern ontario by saturday. this high will quickly 
exit east of the region by sunday. a low pressure system tracking 
across northern ontario into northern quebec will then drive a 
cold front across the region sunday.


lhz462>464-020900-
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-
852 pm edt thu oct 1 2026

.rest of tonight...west winds 10 to 15 knots becoming northwest
15 to 20 knots after midnight. showers this evening...then a
chance of showers after midnight. waves 3 to 5 feet building to
5 to 7 feet early in the morning. waves occasionally around
10 feet. 
.friday...northwest winds 15 to 20 knots increasing to 20 to
25 knots in the late morning and early afternoon...then
decreasing to 15 to 20 knots late in the afternoon. waves 6 to
9 feet. waves occasionally around 12 feet. 
.friday night...north winds 15 to 20 knots decreasing to 10 to
15 knots after midnight. waves 5 to 7 feet. waves occasionally
around 10 feet. 
.saturday...north winds 5 to 10 knots until late afternoon
becoming light and variable. waves 3 to 5 feet subsiding to 1 to
3 feet in the late morning and afternoon. 
.saturday night...light and variable winds becoming southeast
5 to 10 knots in the late evening and overnight. waves 2 feet or
less. 
.sunday...south winds 5 to 10 knots becoming west 10 to 15 knots
late in the afternoon...then becoming northwest 20 to 25 knots
late in the evening. waves 2 feet or less building to 4 to 6 feet
late in the afternoon. waves occasionally around 8 feet. 
.monday...northwest winds 20 to 25 knots decreasing to 10 to
15 knots. waves 5 to 7 feet. waves occasionally around 10 feet. 
.tuesday...northwest winds 5 to 10 knots backing to the southwest
early in the evening...then becoming south 10 to 15 knots by
midnight. waves 2 to 4 feet subsiding to 1 to 3 feet. 


$$

fzus63 kmkx 020207
glflm 
expires:202610020915;;386170

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
907 pm cdt thu oct 1 2026

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...

a cold front will work across the waters this evening, bringing a
north-northwest wind shift. 30.2 inch high pressure will move 
across lake michigan friday afternoon into saturday, bringing 
light/variable winds. winds will trend south-southwesterly 
saturday as 29.8 inch low pressure moves toward the hudson bay 
from the canadian prairies. the low will pull a cold front across 
the waters saturday night into sunday, bringing a west-northwest 
wind shift. northwest winds will continue through the day monday,
diminishing monday night as 30.2 inch high pressure moves in from
the northern great plains. 

a deeper area of 29.4 inch low pressure will build toward the 
hudson bay tuesday through thursday. south-southwest winds will 
increase in advance of the approaching low tuesday afternoon 
through wednesday, becoming gusty at times. while not currently 
expected to be widespread, a few gusts could approach gale-force. 
will be monitoring for possible upward trends as this portion of 
the period draws closer. the low will pull a cold front across the
waters wednesday night into thursday, bringing a northwest wind 
shift and scattered rain showers.


lmz261-362-364-366-563-565-567-868-020915-
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-
907 pm cdt thu oct 1 2026

sheboygan wi to pentwater mi north...

.rest of tonight...north winds 10 to 20 kt. waves 2 to 4 ft
building to 3 to 5 ft. 
.friday...northwest winds 10 to 20 kt becoming north 15 to 25 kt.
waves 4 to 6 ft occasionally to 8 ft subsiding to 2 to 4 ft. 
.friday night...north winds 10 to 20 kt diminishing to 10 to
15 kt late in the evening, then becoming northeast after midnight
becoming east late. waves 2 to 4 ft subsiding to 1 to 2 ft. 
.saturday...southeast winds 10 to 15 kt becoming south 10 to
20 kt. waves 2 to 4 ft. 
.saturday night...south winds 10 to 20 kt becoming southwest to
30 kt overnight. chance of showers overnight. waves 2 to 4 ft
building to 4 to 7 ft occasionally to 9 ft. 
.sunday...west winds to 30 kt becoming northwest. waves 4 to 7 ft
occasionally to 9 ft subsiding to 3 to 5 ft. 
.sunday night...northwest winds to 30 kt diminishing to 15 to
25 kt. waves 3 to 5 ft. 
.monday...northwest winds 15 to 25 kt. waves 3 to 5 ft. 
.tuesday...south winds 10 to 20 kt increasing to 30 kt. waves
2 to 4 ft building to 4 to 7 ft occasionally to 9 ft. 

$$

fzus63 kmkx 020207
glflm 
expires:202610020915;;386171

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
907 pm cdt thu oct 1 2026

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...

a cold front will work across the waters this evening, bringing a
north-northwest wind shift. 30.2 inch high pressure will move 
across lake michigan friday afternoon into saturday, bringing 
light/variable winds. winds will trend south-southwesterly 
saturday as 29.8 inch low pressure moves toward the hudson bay 
from the canadian prairies. the low will pull a cold front across 
the waters saturday night into sunday, bringing a west-northwest 
wind shift. northwest winds will continue through the day monday,
diminishing monday night as 30.2 inch high pressure moves in from
the northern great plains. 

a deeper area of 29.4 inch low pressure will build toward the 
hudson bay tuesday through thursday. south-southwest winds will 
increase in advance of the approaching low tuesday afternoon 
through wednesday, becoming gusty at times. while not currently 
expected to be widespread, a few gusts could approach gale-force. 
will be monitoring for possible upward trends as this portion of 
the period draws closer. the low will pull a cold front across the
waters wednesday night into thursday, bringing a northwest wind 
shift and scattered rain showers.


lmz080-669-671-673-675-777-779-870-872-874-876-878-020915-
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-
907 pm cdt thu oct 1 2026

sheboygan wi to pentwater mi south...

.rest of tonight...north winds 10 to 20 kt increasing to 15 to
25 kt. showers late this evening, then chance of showers
overnight. waves 3 to 5 ft building to 4 to 7 ft occasionally to
9 ft. 
.friday...north winds 15 to 25 kt diminishing to 10 to 20 kt.
waves 4 to 7 ft occasionally to 9 ft. 
.friday night...north winds 10 to 20 kt veering to east 10 to
15 kt. waves 4 to 6 ft occasionally to 8 ft subsiding to 3 to
5 ft. 
.saturday...southeast winds 10 to 15 kt increasing to 10 to
20 kt. waves 2 to 4 ft. 
.saturday night...southeast winds 10 to 20 kt becoming southwest.
waves 2 to 4 ft building to 3 to 5 ft. 
.sunday...west winds 10 to 20 kt becoming northwest. waves 3 to
5 ft. 
.sunday night...northwest winds 10 to 20 kt becoming north. waves
3 to 5 ft. 
.monday...north winds 10 to 20 kt. waves 3 to 5 ft. 
.tuesday...south winds 10 to 20 kt increasing to 30 kt. waves
2 to 4 ft building to 4 to 7 ft occasionally to 9 ft. 

$$

fzus63 kmqt 020201
glfls 
expires:202610020800;;385864

open lake forecast for lake superior
national weather service marquette mi
1001 pm edt thu oct 1 2026

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...

troughing of 29.9 inches lingers over eastern lake superior between 
29.3 troughing over northeastern quebec and a 29.8 inch low over the 
south plains. high pressure builds to 30.2 inches over the northern 
plains tonight into tomorrow before shifting east to the great lakes 
tomorrow night through saturday and building to 30.3 inches. a weak 
29.9 inch trough crosses lake superior saturday night and sunday, 
with 30.3 inch high pressure quickly returning sunday night into 
monday. ridging remains in the area through tuesday afternoon before 
being replaced by troughing wednesday morning.




lsz162-020800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1001 pm edt thu oct 1 2026 /901 pm cdt thu oct 1 2026/

.rest of tonight...northwest winds 15 to 25 knots. waves 1 to
3 feet. 
.friday...northwest winds 10 to 20 knots backing west in the
afternoon, then becoming southwest 5 to 15 knots late. waves
subsiding to calm to 2 feet. 
.friday night...west winds 5 to 15 knots becoming south less than
10 knots after midnight, then increasing to 5 to 15 knots late.
waves calm to 2 feet. 
.saturday...south winds 5 to 15 knots increasing to 10 to
20 knots by mid afternoon. a chance of showers. waves calm to
2 feet. 
.saturday night...southwest winds 15 to 25 knots veering west
after midnight. a chance of showers through midnight. waves
building to 1 to 3 feet. 
.sunday...northwest winds 15 to 25 knots. waves building to 2 to
4 feet, then subsiding to calm to 2 feet. 
.sunday night...northwest winds 10 to 20 knots diminishing to
5 to 15 knots after midnight. waves calm to 2 feet. 
.monday...northwest winds 5 to 15 knots becoming south 10 to
20 knots. waves building to 1 to 3 feet. 
.tuesday...south winds 20 to 30 knots becoming southwest 15 to
25 knots. waves building to 2 to 4 feet, then subsiding to 1 to
3 feet. 

$$

fzus63 kmqt 020201
glfls 
expires:202610020800;;385865

open lake forecast for lake superior
national weather service marquette mi
1001 pm edt thu oct 1 2026

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...

troughing of 29.9 inches lingers over eastern lake superior between 
29.3 troughing over northeastern quebec and a 29.8 inch low over the 
south plains. high pressure builds to 30.2 inches over the northern 
plains tonight into tomorrow before shifting east to the great lakes 
tomorrow night through saturday and building to 30.3 inches. a weak 
29.9 inch trough crosses lake superior saturday night and sunday, 
with 30.3 inch high pressure quickly returning sunday night into 
monday. ridging remains in the area through tuesday afternoon before 
being replaced by troughing wednesday morning.




lsz263-020800-
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-
1001 pm edt thu oct 1 2026

.rest of tonight...northwest winds 10 to 20 knots. waves 3 to
5 feet occasionally to 7 feet. 
.friday...northwest winds 10 to 20 knots becoming west 5 to
15 knots late. waves subsiding to calm to 2 feet. 
.friday night...west winds 5 to 15 knots backing south late.
waves calm to 2 feet. 
.saturday...south winds 10 to 20 knots. a slight chance of
showers. waves calm to 2 feet. 
.saturday night...south winds 15 to 25 knots becoming west 20 to
30 knots after midnight. a chance of showers. waves building to
3 to 6 feet occasionally to 8 feet. 
.sunday...northwest winds 20 to 30 knots. waves building to 4 to
7 feet occasionally to 9 feet, then subsiding to 3 to 5 feet
occasionally to 7 feet. 
.sunday night...northwest winds 15 to 25 knots diminishing to
10 to 20 knots after midnight. waves subsiding to 2 to 4 feet. 
.monday...northwest winds 10 to 20 knots backing south. waves
subsiding to calm to 2 feet, then building to 1 to 3 feet. 
.tuesday...south gales to 35 knots becoming southwest 20 to
30 knots. waves building to 3 to 5 feet occasionally to 7 feet,
then subsiding to 1 to 3 feet. 

$$

fzus63 kmqt 020201
glfls 
expires:202610020800;;385866

open lake forecast for lake superior
national weather service marquette mi
1001 pm edt thu oct 1 2026

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...

troughing of 29.9 inches lingers over eastern lake superior between 
29.3 troughing over northeastern quebec and a 29.8 inch low over the 
south plains. high pressure builds to 30.2 inches over the northern 
plains tonight into tomorrow before shifting east to the great lakes 
tomorrow night through saturday and building to 30.3 inches. a weak 
29.9 inch trough crosses lake superior saturday night and sunday, 
with 30.3 inch high pressure quickly returning sunday night into 
monday. ridging remains in the area through tuesday afternoon before 
being replaced by troughing wednesday morning.




lsz264-020800-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
1001 pm edt thu oct 1 2026

.rest of tonight...northwest winds 10 to 20 knots. waves 3 to
5 feet occasionally to 7 feet. 
.friday...northwest winds 15 to 25 knots diminishing to 10 to
20 knots in the afternoon, then backing west late. waves building
to 3 to 6 feet occasionally to 8 feet, then subsiding to 1 to
3 feet. 
.friday night...west winds 5 to 15 knots backing southwest late.
waves subsiding to calm to 2 feet. 
.saturday...south winds 5 to 15 knots increasing to 10 to
20 knots by mid afternoon. a slight chance of showers. waves
building to 1 to 3 feet. 
.saturday night...south winds 15 to 25 knots becoming west 20 to
30 knots after midnight. showers through midnight, then a chance
of showers after midnight. waves building to 3 to 6 feet
occasionally to 8 feet. 
.sunday...northwest gales to 35 knots. waves building to 6 to
9 feet occasionally to 11 feet, then subsiding to 4 to 7 feet
occasionally to 9 feet. 
.sunday night...northwest winds 20 to 30 knots diminishing to
15 to 25 knots after midnight. waves subsiding to 3 to 5 feet
occasionally to 7 feet. 
.monday...northwest winds 10 to 20 knots backing south. waves
subsiding to calm to 2 feet. 
.tuesday...south winds 15 to 25 knots veering southwest. waves
building to 2 to 4 feet. 

$$

fzus63 kmqt 020201
glfls 
expires:202610020800;;385867

open lake forecast for lake superior
national weather service marquette mi
1001 pm edt thu oct 1 2026

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...

troughing of 29.9 inches lingers over eastern lake superior between 
29.3 troughing over northeastern quebec and a 29.8 inch low over the 
south plains. high pressure builds to 30.2 inches over the northern 
plains tonight into tomorrow before shifting east to the great lakes 
tomorrow night through saturday and building to 30.3 inches. a weak 
29.9 inch trough crosses lake superior saturday night and sunday, 
with 30.3 inch high pressure quickly returning sunday night into 
monday. ridging remains in the area through tuesday afternoon before 
being replaced by troughing wednesday morning.




lsz265-020800-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
1001 pm edt thu oct 1 2026

.rest of tonight...northwest winds 20 to 30 knots. waves 3 to
6 feet occasionally to 8 feet. 
.friday...northwest winds 20 to 30 knots diminishing to 15 to
25 knots late. waves building to 4 to 7 feet occasionally to
9 feet, then subsiding to 2 to 4 feet. 
.friday night...west winds 10 to 20 knots backing southwest late.
waves subsiding to calm to 2 feet. 
.saturday...south winds 10 to 20 knots increasing to 15 to
25 knots by mid afternoon. waves building to 1 to 3 feet. 
.saturday night...south winds 20 to 30 knots becoming southwest
gales to 35 knots after midnight. showers likely through
midnight, then a chance of showers after midnight. waves building
to 3 to 6 feet occasionally to 8 feet. 
.sunday...northwest gales to 35 knots. waves building to 5 to
9 feet occasionally to 11 feet. 
.sunday night...northwest gales to 35 knots diminishing to 20 to
30 knots after midnight. waves subsiding to 3 to 6 feet
occasionally to 8 feet, then building to 4 to 7 feet occasionally
to 9 feet. 
.monday...northwest winds 15 to 25 knots becoming south 10 to
20 knots. waves subsiding to calm to 2 feet. 
.tuesday...south winds 15 to 25 knots becoming southwest 20 to
30 knots. waves building to 2 to 4 feet. 

$$

fzus63 kmqt 020201
glfls 
expires:202610020800;;385868

open lake forecast for lake superior
national weather service marquette mi
1001 pm edt thu oct 1 2026

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...

troughing of 29.9 inches lingers over eastern lake superior between 
29.3 troughing over northeastern quebec and a 29.8 inch low over the 
south plains. high pressure builds to 30.2 inches over the northern 
plains tonight into tomorrow before shifting east to the great lakes 
tomorrow night through saturday and building to 30.3 inches. a weak 
29.9 inch trough crosses lake superior saturday night and sunday, 
with 30.3 inch high pressure quickly returning sunday night into 
monday. ridging remains in the area through tuesday afternoon before 
being replaced by troughing wednesday morning.




lsz266-020800-
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-
1001 pm edt thu oct 1 2026

.rest of tonight...northwest winds 20 to 30 knots. sprinkles
after midnight. waves 3 to 6 feet occasionally to 8 feet. 
.friday...northwest winds 20 to 30 knots diminishing to 15 to
25 knots late. sprinkles through early afternoon. waves building
to 6 to 9 feet occasionally to 11 feet, then subsiding to 4 to
7 feet occasionally to 9 feet. 
.friday night...northwest winds 10 to 20 knots becoming west 5 to
15 knots after midnight, then backing southwest late. waves
subsiding to calm to 2 feet. 
.saturday...south winds 10 to 20 knots increasing to 15 to
25 knots by mid afternoon. a slight chance of showers by mid
afternoon. waves building to 1 to 3 feet. 
.saturday night...south winds 20 to 30 knots becoming southwest
gales to 35 knots after midnight. showers. waves building to 4 to
7 feet occasionally to 9 feet. 
.sunday...northwest gales to 40 knots. waves building to 8 to
12 feet occasionally to 15 feet. 
.sunday night...northwest gales to 35 knots diminishing to 20 to
30 knots after midnight. waves subsiding to 5 to 8 feet
occasionally to 10 feet. 
.monday...northwest winds 20 to 30 knots becoming south 10 to
20 knots. waves subsiding to calm to 2 feet. 
.tuesday...south winds 20 to 30 knots becoming southwest gales to
35 knots. waves building to 3 to 6 feet occasionally to 8 feet. 

$$

fzus63 kmqt 020201
glfls 
expires:202610020800;;385869

open lake forecast for lake superior
national weather service marquette mi
1001 pm edt thu oct 1 2026

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...

troughing of 29.9 inches lingers over eastern lake superior between 
29.3 troughing over northeastern quebec and a 29.8 inch low over the 
south plains. high pressure builds to 30.2 inches over the northern 
plains tonight into tomorrow before shifting east to the great lakes 
tomorrow night through saturday and building to 30.3 inches. a weak 
29.9 inch trough crosses lake superior saturday night and sunday, 
with 30.3 inch high pressure quickly returning sunday night into 
monday. ridging remains in the area through tuesday afternoon before 
being replaced by troughing wednesday morning.




lsz267-020800-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
1001 pm edt thu oct 1 2026

.rest of tonight...northwest winds 15 to 25 knots. sprinkles
after midnight. waves 3 to 6 feet occasionally to 8 feet. 
.friday...northwest winds 20 to 30 knots. sprinkles through early
afternoon. waves building to 5 to 9 feet occasionally to 11 feet.
.friday night...northwest winds 10 to 20 knots diminishing to
5 to 15 knots after midnight. waves subsiding to calm to 2 feet. 
.saturday...south winds 5 to 15 knots increasing to 10 to
20 knots by mid afternoon. waves calm to 2 feet. 
.saturday night...south winds 15 to 25 knots increasing to 20 to
30 knots after midnight. a chance of showers through midnight,
then showers after midnight. waves building to 4 to 7 feet
occasionally to 9 feet. 
.sunday...west gales to 35 knots becoming northwest gales to
40 knots by mid afternoon. a chance of showers through early
afternoon. waves building to 10 to 14 feet occasionally to
18 feet. 
.sunday night...northwest gales to 35 knots. waves subsiding to
6 to 9 feet occasionally to 11 feet. 
.monday...northwest winds 15 to 25 knots diminishing to 5 to
15 knots. waves subsiding to calm to 2 feet. 
.tuesday...south winds 15 to 25 knots becoming southwest 20 to
30 knots. waves building to 3 to 6 feet occasionally to 8 feet. 

$$