fzus63 kdtx 060141
glflh 
expires:202610060945;;602372

open lake forecast for lake huron
national weather service detroit/pontiac mi
941 pm edt mon oct 5 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...high pressure, 30.20 inches, drifts over the central
great lakes through tuesday morning. low pressure sliding over
northern ontario results in stronger southwest winds tuesday.
persistent influence of james bay low pressure then maintains
moderate northwesterly winds through thursday.


lhz361-060945-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
941 pm edt mon oct 5 2026

.rest of tonight...northwest winds 10 to 15 knots becoming north
5 to 10 knots after midnight...then becoming light and variable
early in the morning. waves 1 to 3 feet. 
.tuesday...south winds 5 to 10 knots increasing to 10 to 15 knots
in the late morning and afternoon. waves 2 feet or less building
to 2 to 4 feet late in the afternoon. 
.tuesday night...south winds 10 to 15 knots increasing to 15 to
20 knots by midnight...then becoming southwest 10 to 15 knots
after midnight. waves 2 to 4 feet. 
.wednesday...west winds 10 to 15 knots increasing to 15 to
20 knots early in the afternoon. waves 2 to 4 feet. 
.wednesday night...west winds 10 to 15 knots. waves 2 to 4 feet. 
.thursday...west winds 15 to 20 knots with gusts to around
30 knots becoming northwest 10 to 15 knots late in the evening.
waves 3 to 5 feet. 
.friday...west winds 5 to 10 knots increasing to 10 to 15 knots
until early evening...then becoming northwest 5 to 10 knots by
midnight. waves 1 to 3 feet. 
.saturday...south winds 5 to 10 knots increasing to 15 to
20 knots. waves 2 feet or less building to 3 to 5 feet . 


$$

fzus63 kdtx 060141
glflh 
expires:202610060945;;602373

open lake forecast for lake huron
national weather service detroit/pontiac mi
941 pm edt mon oct 5 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...high pressure, 30.20 inches, drifts over the central
great lakes through tuesday morning. low pressure sliding over
northern ontario results in stronger southwest winds tuesday.
persistent influence of james bay low pressure then maintains
moderate northwesterly winds through thursday.


lhz362-363-060945-
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-
941 pm edt mon oct 5 2026

.rest of tonight...northwest winds 10 to 15 knots decreasing to
5 to 10 knots after midnight. waves 3 to 5 feet subsiding to 1 to
3 feet early in the morning. 
.tuesday...light and variable winds becoming south 5 to 10 knots
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 1 to 3 feet building to 3 to 5 feet late in the afternoon. 
.tuesday night...south winds 20 to 25 knots with gusts to around
30 knots. a chance of rain in the evening. waves 5 to 7 feet.
waves occasionally around 10 feet. 
.wednesday...southwest winds 15 to 20 knots becoming west 10 to
15 knots in the late morning and afternoon. waves 5 to 7 feet
subsiding to 2 to 4 feet early in the afternoon. waves
occasionally around 10 feet. 
.wednesday night...west winds 10 to 15 knots. waves 2 to 4 feet. 
.thursday...west winds 15 to 20 knots with gusts to around
30 knots decreasing to 10 to 15 knots late in the evening. waves
4 to 6 feet. waves occasionally around 8 feet. 
.friday...west winds 10 to 15 knots. waves 1 to 3 feet building
to 2 to 4 feet . 
.saturday...west winds 5 to 10 knots backing to the southeast in
the late morning and early afternoon...then increasing to 10 to
15 knots early in the evening becoming south 20 to 25 knots by
midnight. waves 1 to 3 feet building to 5 to 7 feet. waves
occasionally around 10 feet. 


$$

fzus63 kdtx 060141
glflh 
expires:202610060945;;602374

open lake forecast for lake huron
national weather service detroit/pontiac mi
941 pm edt mon oct 5 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...high pressure, 30.20 inches, drifts over the central
great lakes through tuesday morning. low pressure sliding over
northern ontario results in stronger southwest winds tuesday.
persistent influence of james bay low pressure then maintains
moderate northwesterly winds through thursday.


lhz462>464-060945-
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-
941 pm edt mon oct 5 2026

.rest of tonight...northwest winds 10 to 15 knots decreasing to
5 to 10 knots after midnight. waves 3 to 5 feet. 
.tuesday...west winds 5 to 10 knots backing to the southwest in
the late morning and early afternoon...then becoming south 10 to
15 knots late in the afternoon. waves 1 to 3 feet. 
.tuesday night...south winds 15 to 20 knots becoming southwest
20 to 25 knots with gusts to around 30 knots in the late evening
and overnight. waves 4 to 6 feet. waves occasionally around
8 feet. 
.wednesday...southwest winds 15 to 20 knots with gusts to around
30 knots becoming west 10 to 15 knots in the late morning and
afternoon. waves 3 to 5 feet subsiding to 1 to 3 feet early in
the afternoon. 
.wednesday night...west winds 10 to 15 knots. waves 1 to 3 feet
building to 2 to 4 feet after midnight. 
.thursday...west winds 15 to 20 knots decreasing to 10 to
15 knots. waves 2 to 4 feet. 
.friday...west winds 10 to 15 knots. waves 1 to 3 feet. 
.saturday...northeast winds 10 to 15 knots veering to the
southeast until early evening...then becoming south 15 to
20 knots by midnight. waves 1 to 3 feet building to 3 to 5 feet .


$$

fzus63 kmkx 060202
glflm 
expires:202610060945;;602895

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
902 pm cdt mon oct 5 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...

winds then turn south into tonight as low pressure of 29.4 inches
will build toward the hudson bay tuesday through thursday. ahead 
of this low, south southwest winds will increase tuesday afternoon
and become gusty. a gale warning is in effect tuesday afternoon 
and evening for the north half of the lake, north of a port 
washington wi to whitehall mi line, with southwest gales to 40 kt 
expected. the low will pull a cold front across the waters late 
tuesday night into wednesday shifting winds to the west-northwest.


lmz261-362-364-563-060945-
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 rock island passage to sturgeon bay wi-
902 pm cdt mon oct 5 2026

sturgeon bay wi to point betsie mi north...

...gale warning in effect from tuesday afternoon through tuesday
evening...

.rest of tonight...east winds 5 to 10 kt becoming southeast late
this evening, then becoming south after midnight becoming 10 to
20 kt late. chance of showers overnight. waves 1 to 2 ft building
to 1 to 3 ft. 
.tuesday...south winds to 30 kt increasing to gales to 40 kt.
slight chance of showers. waves 4 to 6 ft occasionally to 8 ft
building to 8 to 11 ft occasionally to 14 ft. 
.tuesday night...southwest gales to 40 kt becoming west to 30 kt
after midnight, then diminishing to 15 to 25 kt late. waves 8 to
12 ft occasionally to 16 ft subsiding to 4 to 7 ft occasionally
to 9 ft. 
.wednesday...northwest winds 15 to 25 kt becoming west 10 to
20 kt. waves 3 to 5 ft subsiding to 2 to 4 ft. 
.wednesday night...northwest winds 10 to 20 kt increasing to
15 to 25 kt. waves 1 to 3 ft building to 3 to 5 ft. 
.thursday...northwest winds 15 to 25 kt. waves 3 to 5 ft. 
.thursday night...northwest winds 15 to 25 kt becoming west 10 to
15 kt. waves 2 to 4 ft subsiding to 1 to 2 ft. 
.friday...west winds 10 to 20 kt increasing to 15 to 25 kt. waves
1 to 3 ft. 
.saturday...southeast winds 15 to 25 kt becoming south. waves
3 to 5 ft building to 6 to 9 ft occasionally to 12 ft.  

$$

fzus63 kmkx 060202
glflm 
expires:202610060945;;602896

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
902 pm cdt mon oct 5 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...

winds then turn south into tonight as low pressure of 29.4 inches
will build toward the hudson bay tuesday through thursday. ahead 
of this low, south southwest winds will increase tuesday afternoon
and become gusty. a gale warning is in effect tuesday afternoon 
and evening for the north half of the lake, north of a port 
washington wi to whitehall mi line, with southwest gales to 40 kt 
expected. the low will pull a cold front across the waters late 
tuesday night into wednesday shifting winds to the west-northwest.


lmz366-565-567-669-868-870-060945-
lake michigan from point betsie to manistee mi 5 nm offshore to
mid lake-
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 sheboygan to port washington wi 5 nm offshore
to mid lake-
lake michigan from pentwater to manistee mi 5 nm offshore to mid
lake-
lake michigan from whitehall to pentwater mi 5 nm offshore to mid
lake-
902 pm cdt mon oct 5 2026

sturgeon bay wi to point betsie mi south to port washington wi to
whitehall mi...

...gale warning in effect from tuesday afternoon through tuesday
evening...

.rest of tonight...east winds 5 to 10 kt becoming southeast late
this evening, then becoming south after midnight becoming 10 to
20 kt late. chance of showers overnight. waves 1 to 2 ft building
to 2 to 4 ft. 
.tuesday...south winds to 30 kt increasing to gales to 35 kt.
waves 4 to 6 ft occasionally to 8 ft building to 7 to 10 ft
occasionally to 13 ft. 
.tuesday night...southwest gales to 35 kt diminishing to 30 kt
late in the evening, then becoming southwest to 30 kt after
midnight becoming west 15 to 25 kt late. waves 8 to 11 ft
occasionally to 14 ft subsiding to 6 to 9 ft occasionally to
12 ft. 
.wednesday...northwest winds 10 to 20 kt becoming west. waves
4 to 6 ft occasionally to 8 ft subsiding to 2 to 4 ft. 
.wednesday night...west winds 10 to 20 kt becoming northwest.
waves 3 to 5 ft. 
.thursday...northwest winds 15 to 25 kt diminishing to 10 to
20 kt. waves 3 to 5 ft. 
.thursday night...northwest winds 10 to 20 kt becoming west 10 to
15 kt. waves 2 to 4 ft. 
.friday...west winds 10 to 20 kt. waves 1 to 3 ft. 
.saturday...south winds to 30 kt. waves 4 to 7 ft occasionally to
9 ft building to 7 to 10 ft occasionally to 13 ft.  

$$

fzus63 kmkx 060202
glflm 
expires:202610060945;;602897

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
902 pm cdt mon oct 5 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...

winds then turn south into tonight as low pressure of 29.4 inches
will build toward the hudson bay tuesday through thursday. ahead 
of this low, south southwest winds will increase tuesday afternoon
and become gusty. a gale warning is in effect tuesday afternoon 
and evening for the north half of the lake, north of a port 
washington wi to whitehall mi line, with southwest gales to 40 kt 
expected. the low will pull a cold front across the waters late 
tuesday night into wednesday shifting winds to the west-northwest.


lmz080-671-673-675-777-779-872-874-876-878-060945-
lake michigan from michigan city in to st. joseph mi 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 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-
902 pm cdt mon oct 5 2026

port washington wi to whitehall mi south...

.rest of tonight...east winds 5 to 10 kt becoming southeast 10 to
15 kt after midnight, then becoming south 10 to 20 kt late. waves
1 to 3 ft. 
.tuesday...south winds 15 to 25 kt increasing to 30 kt. waves
3 to 5 ft building to 6 to 9 ft occasionally to 12 ft. 
.tuesday night...south winds to 30 kt becoming southwest 15 to
25 kt. waves 6 to 9 ft occasionally to 12 ft. 
.wednesday...west winds 10 to 20 kt. waves 4 to 7 ft occasionally
to 9 ft subsiding to 2 to 4 ft. 
.wednesday night...west winds 10 to 20 kt becoming northwest.
waves 3 to 5 ft. 
.thursday...northwest winds 10 to 20 kt. waves 4 to 6 ft
occasionally to 8 ft. 
.thursday night...northwest winds 10 to 20 kt becoming west 10 to
15 kt. waves 2 to 4 ft. 
.friday...west winds 10 to 20 kt becoming southwest. waves 2 to
4 ft. 
.saturday...southeast winds to 30 kt becoming south. waves 6 to
9 ft occasionally to 12 ft.  

$$

fzus63 kmqt 060202
glfls 
expires:202610060800;;602900

open lake forecast for lake superior
national weather service marquette mi
1001 pm edt mon oct 5 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...

30.2 inch high pressure will shift east to the lower great lakes 
tonight. behind this, a 29.5 inch low drops southeast out of 
northern canada, reaching far northern ontario at 29.4 inches by 
tomorrow evening. this brings 29.6 inch troughing over lake superior 
late tomorrow, weakening to 29.7 inches through wednesday. high 
pressure builds back in from the canadian prairies and northern 
plains late in the week, resulting in 30.1 to 30.2 inch ridging over 
lake superior late thursday into friday. a 29.4 inch low will 
develop off the northern rockies late friday and extend a 29.7 to 
29.9 inch trough to the upper great lakes by saturday night.




lsz162-060800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1001 pm edt mon oct 5 2026 /901 pm cdt mon oct 5 2026/

.rest of tonight...southeast winds 10 to 20 knots diminishing to
5 to 15 knots after midnight, then becoming south 10 to 20 knots
late. a chance of showers. waves calm to 2 feet building to 1 to
3 feet. 
.tuesday...south winds 10 to 20 knots becoming southwest 15 to
25 knots in the afternoon, then veering west late. waves 1 to
3 feet. 
.tuesday night...west winds 15 to 25 knots diminishing to 10 to
20 knots after midnight. waves subsiding to calm to 2 feet. 
.wednesday...west winds 10 to 20 knots increasing to 20 to
30 knots by mid afternoon. waves building to 1 to 3 feet. 
.wednesday night...west winds 15 to 25 knots diminishing to 10 to
20 knots after midnight. waves subsiding to calm to 2 feet. 
.thursday...west winds 10 to 20 knots. waves building to 1 to
3 feet, then subsiding to calm to 2 feet. 
.thursday night...west winds 10 to 20 knots. waves calm to
2 feet. 
.friday...west winds 5 to 15 knots becoming southeast 10 to
20 knots. waves building to 1 to 3 feet. 
.saturday...southeast winds 20 to 30 knots veering southwest.
waves building to 3 to 6 feet occasionally to 8 feet. 

$$

fzus63 kmqt 060202
glfls 
expires:202610060800;;602901

open lake forecast for lake superior
national weather service marquette mi
1001 pm edt mon oct 5 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...

30.2 inch high pressure will shift east to the lower great lakes 
tonight. behind this, a 29.5 inch low drops southeast out of 
northern canada, reaching far northern ontario at 29.4 inches by 
tomorrow evening. this brings 29.6 inch troughing over lake superior 
late tomorrow, weakening to 29.7 inches through wednesday. high 
pressure builds back in from the canadian prairies and northern 
plains late in the week, resulting in 30.1 to 30.2 inch ridging over 
lake superior late thursday into friday. a 29.4 inch low will 
develop off the northern rockies late friday and extend a 29.7 to 
29.9 inch trough to the upper great lakes by saturday night.




lsz263-060800-
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 mon oct 5 2026

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

$$

fzus63 kmqt 060202
glfls 
expires:202610060800;;602902

open lake forecast for lake superior
national weather service marquette mi
1001 pm edt mon oct 5 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...

30.2 inch high pressure will shift east to the lower great lakes 
tonight. behind this, a 29.5 inch low drops southeast out of 
northern canada, reaching far northern ontario at 29.4 inches by 
tomorrow evening. this brings 29.6 inch troughing over lake superior 
late tomorrow, weakening to 29.7 inches through wednesday. high 
pressure builds back in from the canadian prairies and northern 
plains late in the week, resulting in 30.1 to 30.2 inch ridging over 
lake superior late thursday into friday. a 29.4 inch low will 
develop off the northern rockies late friday and extend a 29.7 to 
29.9 inch trough to the upper great lakes by saturday night.




lsz264-060800-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
1001 pm edt mon oct 5 2026

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

$$

fzus63 kmqt 060202
glfls 
expires:202610060800;;602903

open lake forecast for lake superior
national weather service marquette mi
1001 pm edt mon oct 5 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...

30.2 inch high pressure will shift east to the lower great lakes 
tonight. behind this, a 29.5 inch low drops southeast out of 
northern canada, reaching far northern ontario at 29.4 inches by 
tomorrow evening. this brings 29.6 inch troughing over lake superior 
late tomorrow, weakening to 29.7 inches through wednesday. high 
pressure builds back in from the canadian prairies and northern 
plains late in the week, resulting in 30.1 to 30.2 inch ridging over 
lake superior late thursday into friday. a 29.4 inch low will 
develop off the northern rockies late friday and extend a 29.7 to 
29.9 inch trough to the upper great lakes by saturday night.




lsz265-060800-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
1001 pm edt mon oct 5 2026

.rest of tonight...southeast winds 10 to 20 knots veering south
after midnight, then increasing to 20 to 30 knots late. waves
calm to 2 feet building to 2 to 4 feet. 
.tuesday...south winds to 30 knots with a few gale force gusts to
35 knots possible diminishing to 20 to 30 knots in the afternoon,
then becoming southwest 15 to 25 knots late. a slight chance of
showers through early afternoon. waves building to 3 to 5 feet
occasionally to 7 feet, then subsiding to calm to 2 feet. 
.tuesday night...west winds 15 to 25 knots increasing to 30 knots
with a few gale force gusts to 35 knots possible after midnight.
waves building to 3 to 5 feet occasionally to 7 feet. 
.wednesday...west gales to 35 knots. waves building to 3 to
6 feet occasionally to 8 feet. 
.wednesday night...northwest gales to 35 knots. a chance of
showers. waves subsiding to 3 to 5 feet occasionally to 7 feet,
then building to 4 to 7 feet occasionally to 9 feet. 
.thursday...northwest gales to 35 knots becoming west gales to
40 knots by mid afternoon. waves building to 5 to 8 feet
occasionally to 10 feet, then subsiding to 3 to 5 feet
occasionally to 7 feet. 
.thursday night...west winds 15 to 25 knots. waves subsiding to
calm to 2 feet, then building to 1 to 3 feet. 
.friday...northwest winds 15 to 25 knots becoming south 10 to
20 knots. waves subsiding to calm to 2 feet. 
.saturday...southeast gales to 35 knots veering south. waves
building to 5 to 8 feet occasionally to 10 feet, then subsiding
to 3 to 6 feet occasionally to 8 feet. 

$$

fzus63 kmqt 060202
glfls 
expires:202610060800;;602904

open lake forecast for lake superior
national weather service marquette mi
1001 pm edt mon oct 5 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...

30.2 inch high pressure will shift east to the lower great lakes 
tonight. behind this, a 29.5 inch low drops southeast out of 
northern canada, reaching far northern ontario at 29.4 inches by 
tomorrow evening. this brings 29.6 inch troughing over lake superior 
late tomorrow, weakening to 29.7 inches through wednesday. high 
pressure builds back in from the canadian prairies and northern 
plains late in the week, resulting in 30.1 to 30.2 inch ridging over 
lake superior late thursday into friday. a 29.4 inch low will 
develop off the northern rockies late friday and extend a 29.7 to 
29.9 inch trough to the upper great lakes by saturday night.




lsz266-060800-
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 mon oct 5 2026

...gale warning in effect from 9 am edt tuesday through tuesday
afternoon...

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

$$

fzus63 kmqt 060202
glfls 
expires:202610060800;;602905

open lake forecast for lake superior
national weather service marquette mi
1001 pm edt mon oct 5 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...

30.2 inch high pressure will shift east to the lower great lakes 
tonight. behind this, a 29.5 inch low drops southeast out of 
northern canada, reaching far northern ontario at 29.4 inches by 
tomorrow evening. this brings 29.6 inch troughing over lake superior 
late tomorrow, weakening to 29.7 inches through wednesday. high 
pressure builds back in from the canadian prairies and northern 
plains late in the week, resulting in 30.1 to 30.2 inch ridging over 
lake superior late thursday into friday. a 29.4 inch low will 
develop off the northern rockies late friday and extend a 29.7 to 
29.9 inch trough to the upper great lakes by saturday night.




lsz267-060800-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
1001 pm edt mon oct 5 2026

.rest of tonight...northwest winds 5 to 15 knots backing south
after midnight, then increasing to 10 to 20 knots late. waves
1 to 3 feet subsiding to calm to 2 feet, then building to 1 to
3 feet. 
.tuesday...south winds 20 to 30 knots increasing to 30 knots with
a few gale force gusts to 35 knots possible in the afternoon. a
chance of showers. waves building to 3 to 6 feet occasionally to
8 feet. 
.tuesday night...southwest winds 20 to 30 knots veering northwest
late. a slight chance of showers through midnight. waves
subsiding to 2 to 4 feet, then building to 3 to 6 feet
occasionally to 8 feet. 
.wednesday...northwest winds 20 to 30 knots backing west by mid
afternoon. waves building to 4 to 8 feet occasionally to 10 feet.
.wednesday night...northwest winds 20 to 30 knots. showers likely
and a slight chance of thunderstorms through midnight, then a
chance of showers after midnight. waves subsiding to 3 to 6 feet
occasionally to 8 feet, then building to 4 to 7 feet occasionally
to 9 feet. 
.thursday...northwest winds 20 to 30 knots increasing to gales to
35 knots by mid afternoon. a chance of showers. waves building to
6 to 10 feet occasionally to 13 feet. 
.thursday night...northwest winds 15 to 25 knots becoming west
10 to 20 knots after midnight. a chance of showers. waves
subsiding to 2 to 4 feet. 
.friday...northwest winds 15 to 25 knots diminishing to 10 to
20 knots. a chance of showers. waves building to 3 to 5 feet
occasionally to 7 feet, then subsiding to calm to 2 feet. 
.saturday...southeast winds 15 to 25 knots becoming south 20 to
30 knots. waves building to 4 to 7 feet occasionally to 9 feet. 

$$