fzus61 kbuf 010803
glflo 
expires:202610011500;;344777

open lake forecast for lake ontario
national weather service buffalo ny
402 am edt thu oct 1 2026

for waters beyond five nautical miles of shore on lake ontario

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 warm front will lift across the lake today, followed 
by a cold front crossing the lower great lakes later tonight and 
friday morning. a 30.3 inch high will then build into the western 
great lakes friday night and into the eastern great lakes by 
saturday, before exiting into northern new england saturday night 
and into the gulf of saint lawrence sunday. a strong cold front will 
then cross the eastern great lakes sunday night, with another 30.3 
inch high building from the western great lakes into the eastern 
great lakes monday and tuesday.


loz063>065-011500-
lake ontario open waters from hamlin beach to the saint lawrence
river-
402 am edt thu oct 1 2026

.today...south winds 10 to 15 knots increasing to 15 to 20 knots.
showers likely early, then a chance of showers. waves 1 to 3 feet
building to 2 to 4 feet. 
.tonight...southwest winds 10 to 15 knots becoming west. a chance
of showers in the evening, then showers after midnight. waves
1 to 3 feet. 
.friday...west winds 15 to 20 knots. showers in the morning, then
a chance of showers in the afternoon. waves 1 to 3 feet building
to 3 to 5 feet. 
.friday night...northwest winds 15 to 20 knots becoming north
10 to 15 knots. waves 3 to 5 feet subsiding to 2 to 4 feet. 
.saturday...northeast winds 5 to 15 knots becoming southeast.
waves 1 to 3 feet subsiding to 1 foot or less. 
.sunday...south winds 15 to 20 knots becoming west. waves 1 to
3 feet building to 2 to 4 feet. 
.monday...northwest winds 15 to 25 knots. waves 3 to 6 feet. 

$$

fzus61 kbuf 010803
glflo 
expires:202610011500;;344776

open lake forecast for lake ontario
national weather service buffalo ny
402 am edt thu oct 1 2026

for waters beyond five nautical miles of shore on lake ontario

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 warm front will lift across the lake today, followed 
by a cold front crossing the lower great lakes later tonight and 
friday morning. a 30.3 inch high will then build into the western 
great lakes friday night and into the eastern great lakes by 
saturday, before exiting into northern new england saturday night 
and into the gulf of saint lawrence sunday. a strong cold front will 
then cross the eastern great lakes sunday night, with another 30.3 
inch high building from the western great lakes into the eastern 
great lakes monday and tuesday.


loz062-011500-
lake ontario open waters from the niagara river to hamlin beach-
402 am edt thu oct 1 2026

.today...south winds 15 to 20 knots becoming southwest. showers
likely this morning, then a chance of showers this afternoon.
waves 1 to 3 feet. 
.tonight...southwest winds 15 to 20 knots becoming west 10 to
15 knots. a chance of showers early, then showers from late
evening on. waves 2 to 3 feet. 
.friday...west winds 10 to 15 knots becoming northwest 15 to
20 knots. showers in the morning. waves 2 to 3 feet. 
.friday night...northwest winds 15 to 20 knots becoming north
10 to 15 knots. waves 2 to 4 feet subsiding to 1 to 3 feet. 
.saturday...northeast winds 10 knots or less becoming southeast.
waves 2 feet or less. 
.sunday...south winds 10 knots or less becoming west and
increasing to 15 to 20 knots. waves 1 to 3 feet. 
.monday...northwest winds 15 to 20 knots diminishing to 10 to
15 knots. waves 2 to 4 feet building to 3 to 5 feet, then
subsiding to 2 to 4 feet. 

$$

fzus61 kcle 010746
glfle 
expires:202610011430;;344324

open lake forecast for lake erie
national weather service cleveland oh
346 am edt thu oct 1 2026

for waters beyond five nautical miles of shore on lake erie

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...
weak low pressure of 29.80 inches will slide through the central
great lakes today and extend a cold front through the area 
tonight into friday. this will be followed by high pressure of 
30.20 inches building over lake erie on saturday before another 
cold front crosses the lake on sunday. stronger high pressure 
30.40 inches builds over the great lakes early next week.


lez061-168-169-011430-
ripley to buffalo ny extending from 5nm off shoreline to us-
canadian border-geneva-on-the-
lake to conneaut oh beyond 5 nm off shoreline to us-
canadian border-
conneaut oh to ripley ny beyond 5 nm off shoreline to us-
canadian border-
346 am edt thu oct 1 2026

.today...south winds 15 to 20 knots becoming southwest 10 to
15 knots. showers likely early, then a chance of showers late
this morning. a slight chance of showers late. waves 1 to 3 feet.
.tonight...southwest winds 10 to 15 knots becoming northwest
15 to 20 knots. a chance of showers late in the evening. showers
with a slight chance of thunderstorms after midnight. waves 1 to
3 feet building to 2 to 4 feet. 
.friday...northwest winds 15 to 20 knots. showers in the morning.
waves 1 to 3 feet. 
.friday night...northwest winds 15 to 20 knots becoming north
10 to 15 knots. waves 2 to 4 feet subsiding to 1 to 3 feet. 
.saturday...northeast winds 5 to 15 knots becoming southeast.
waves 2 feet or less. 
.sunday...south winds 5 to 10 knots becoming northwest and
increasing to 15 to 20 knots. waves 2 feet or less building to
2 to 4 feet. 
.monday...northwest winds 15 to 20 knots becoming north 10 to
15 knots. waves 2 to 4 feet subsiding to 1 to 3 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 010746
glfle 
expires:202610011430;;344322

open lake forecast for lake erie
national weather service cleveland oh
346 am edt thu oct 1 2026

for waters beyond five nautical miles of shore on lake erie

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...
weak low pressure of 29.80 inches will slide through the central
great lakes today and extend a cold front through the area 
tonight into friday. this will be followed by high pressure of 
30.20 inches building over lake erie on saturday before another 
cold front crosses the lake on sunday. stronger high pressure 
30.40 inches builds over the great lakes early next week.


lez162-163-011430-
detroit river lt. to maumee bay oh to reno beach oh beyond 5nm
offshoreline to us-canadian border-
reno beach to the islands oh beyond 5nm off shoreline to us-
canadian border-
346 am edt thu oct 1 2026

.today...southwest winds 10 to 15 knots. a slight chance of
showers early. waves 1 to 2 feet. 
.tonight...southwest winds 10 to 15 knots becoming north 15 to
20 knots. a slight chance of showers early, then showers with a
slight chance of thunderstorms. showers late. waves 1 to 2 feet. 
.friday...north winds 15 to 20 knots diminishing to 10 to
15 knots. showers in the morning. waves 1 to 3 feet. 
.friday night...north winds 10 to 15 knots becoming northeast.
waves 1 to 2 feet. 
.saturday...northeast winds 5 to 15 knots becoming southeast.
waves 2 feet or less. 
.sunday...west winds 10 knots or less becoming northwest and
increasing to 15 to 20 knots. waves 1 foot or less building to
1 to 3 feet. 
.monday...north winds 15 to 20 knots diminishing to 10 to
15 knots. waves 1 to 3 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 010746
glfle 
expires:202610011430;;344323

open lake forecast for lake erie
national weather service cleveland oh
346 am edt thu oct 1 2026

for waters beyond five nautical miles of shore on lake erie

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...
weak low pressure of 29.80 inches will slide through the central
great lakes today and extend a cold front through the area 
tonight into friday. this will be followed by high pressure of 
30.20 inches building over lake erie on saturday before another 
cold front crosses the lake on sunday. stronger high pressure 
30.40 inches builds over the great lakes early next week.


lez164>167-011430-
the islands to vermilion oh beyond 5 nm off shoreline to us-
canadian border-
vermilion to avon point oh beyond 5 nm off shoreline to us-
canadian border-
avon point to willowick oh beyond 5 nm off shoreline to us-
canadian border-willowick to geneva-on-the-
lake oh beyond 5nm off shoreline to us-canadian border-
346 am edt thu oct 1 2026

.today...south winds 10 to 15 knots becoming southwest. a chance
of showers early, then a slight chance of showers late this
morning. waves 1 to 3 feet. 
.tonight...southwest winds 10 to 15 knots becoming northwest
15 to 20 knots. a chance of showers with a slight chance of
thunderstorms late in the evening. showers with a slight chance
of thunderstorms after midnight. waves 1 to 3 feet. 
.friday...north winds 15 to 20 knots. showers in the morning.
waves 2 to 4 feet subsiding to 1 to 3 feet. 
.friday night...north winds 15 to 20 knots becoming northeast
10 to 15 knots. waves 2 to 4 feet. 
.saturday...northeast winds 5 to 15 knots becoming southeast.
waves 1 to 3 feet subsiding to 1 foot or less. 
.sunday...south winds 5 to 10 knots becoming northwest and
increasing to 15 to 20 knots. waves 2 feet or less building to
2 to 4 feet. 
.monday...northwest winds 15 to 20 knots becoming north 10 to
15 knots. waves 2 to 4 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus63 kdtx 010801
glflh 
expires:202610011615;;344647

open lake forecast for lake huron
national weather service detroit/pontiac mi
401 am 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...southwesterly winds out ahead of an approaching cold
front will continue over the area though this afternoon before 
shifting to the northwest behind the front. occasional showers 
will also be possible through friday before drier conditions move 
in later friday.


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-
401 am edt thu oct 1 2026

.today...southwest winds 10 to 15 knots decreasing to 5 to
10 knots late in the afternoon. a chance of showers in the
morning...then showers in the afternoon. waves 2 to 4 feet. 
.tonight...west winds 10 to 15 knots becoming northwest 15 to
20 knots in the late evening and overnight. a chance of showers
in the evening. waves 1 to 3 feet building to 3 to 5 feet in the
late evening and overnight. 
.friday...northwest winds 15 to 20 knots. gusts to 30 knots early
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 10 to 15 knots after midnight.
waves 5 to 7 feet. waves occasionally around 10 feet. 
.saturday...north winds 5 to 10 knots in the morning becoming
light and variable...then becoming southeast 5 to 10 knots late
in the afternoon becoming south 10 to 15 knots. waves 2 to 4 feet
subsiding to 2 feet or less. 
.sunday...south winds 10 to 15 knots becoming southwest 15 to
20 knots with gusts to around 30 knots until early evening...then
veering to the northwest with gusts to around 30 knots by
midnight. waves 3 to 5 feet building to 6 to 9 feet . waves
occasionally around 12 feet. 
.monday...northwest winds 15 to 20 knots decreasing to 10 to
15 knots by midnight. waves 4 to 6 feet. waves occasionally
around 8 feet. 


$$

fzus63 kdtx 010801
glflh 
expires:202610011615;;344648

open lake forecast for lake huron
national weather service detroit/pontiac mi
401 am 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...southwesterly winds out ahead of an approaching cold
front will continue over the area though this afternoon before 
shifting to the northwest behind the front. occasional showers 
will also be possible through friday before drier conditions move 
in later friday.


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-
401 am edt thu oct 1 2026

.today...south winds 10 to 15 knots. showers. waves 1 to 3 feet. 
.tonight...southwest winds 10 to 15 knots veering to the west
late in the evening...then becoming northwest 15 to 20 knots
after midnight. showers in the evening...then a chance of showers
after midnight. waves 1 to 3 feet building to 3 to 5 feet after
midnight. 
.friday...northwest winds 15 to 20 knots. a chance of showers in
the morning. waves 3 to 5 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 in the morning becoming
light and variable...then becoming southeast 5 to 10 knots late
in the evening. waves 3 to 5 feet subsiding to 1 to 3 feet. 
.sunday...south winds 5 to 10 knots becoming west 10 to 15 knots
early in the evening...then becoming northwest 15 to 20 knots by
midnight. waves 1 to 3 feet building to 4 to 6 feet . waves
occasionally around 8 feet. 
.monday...northwest winds 15 to 20 knots becoming north 10 to
15 knots by midnight. waves 4 to 6 feet. 


$$

fzus63 kdtx 010801
glflh 
expires:202610011615;;344646

open lake forecast for lake huron
national weather service detroit/pontiac mi
401 am 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...southwesterly winds out ahead of an approaching cold
front will continue over the area though this afternoon before 
shifting to the northwest behind the front. occasional showers 
will also be possible through friday before drier conditions move 
in later friday.


lhz361-011615-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
401 am edt thu oct 1 2026

.today...southwest winds 5 to 10 knots becoming west 10 to
15 knots late in the afternoon. a chance of showers. waves 2 feet
or less. 
.tonight...northwest winds 10 to 15 knots. waves 1 to 3 feet. 
.friday...northwest winds 10 to 15 knots increasing to 15 to
20 knots with gusts to around 30 knots in the late morning and
afternoon. waves 1 to 3 feet building to 3 to 5 feet in the late
morning and afternoon. 
.friday night...northwest winds 15 to 20 knots with gusts to
around 30 knots decreasing to 5 to 10 knots. waves 3 to 5 feet
subsiding to 1 to 3 feet after midnight. 
.saturday...light and variable winds becoming southeast 5 to
10 knots late in the afternoon...then becoming south 10 to
15 knots late in the evening. waves 2 feet or less. 
.sunday...south winds 10 to 15 knots becoming southwest 15 to
20 knots in the late morning and early afternoon...then veering
to the west with gusts to around 30 knots . a chance of showers
early in the morning. waves 2 to 4 feet building to 4 to 6 feet .
waves occasionally around 8 feet. 
.monday...northwest winds 15 to 20 knots decreasing to 5 to
10 knots. waves 3 to 5 feet subsiding to 1 to 3 feet. 


$$

fzus63 kdtx 010801
glfsc 
expires:202610011615;;344717

lake st clair forecast
national weather service detroit/pontiac mi
401 am edt thu oct 1 2026

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...southwesterly winds out ahead of an approaching cold
front will continue over the area though this afternoon before
shifting to the northwest behind the front. occasional showers
will also be possible through friday before drier conditions move
in later friday.


lcz460-011615-
lake st clair-
401 am edt thu oct 1 2026

.today...southwest winds 10 to 15 knots. mostly cloudy with a chance
of light showers. waves 2 feet or less.
.tonight...southwest winds 5 to 10 knots veering to the west late in
the evening...then becoming north 10 to 15 knots after midnight
increasing to 15 to 20 knots early in the morning. a chance of light
showers early in the evening. showers in the late evening and
overnight. waves 2 feet or less.
.friday...north winds 15 to 20 knots becoming northwest 10 to 15
knots in the late morning and afternoon. mostly cloudy. waves 2 feet
or less.
.friday night...north winds 10 to 15 knots diminishing to 5 to 10
knots in the late evening and overnight. mostly clear. waves 2 feet
or less.
.saturday...north winds 5 to 10 knots veering to the east in the
afternoon and evening. clear. waves 2 feet or less.
.sunday...northwest winds 10 to 15 knots. mostly clear. waves 2 feet
or less.
.monday...north winds 15 to 20 knots. clear. waves 1 to 3 feet.

$$

fzus63 kmkx 011219
glflm 
expires:202610012115;;354594

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
719 am 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...

modest southwest winds will continue this morning, then shift 
westerly ahead of a cold front by the middle of today. expect 
winds to then shift northwest with a frontal passage this
afternoon. modest to breezy northerly winds are then forecast 
tonight and friday. strong high pressure around 30.4 inches will 
then overspread the great lakes friday night. this should bring 
lighter winds to the lake friday night into saturday.

a fast-moving low pressure system around 29.8 inches should move 
across or north of lake superior saturday night, with high 
pressure around 30.4 inches moving southeast into the region by 
early next week. south to southwest winds saturday night should 
veer northwest to north sunday into monday across lake michigan.


lmz080-669-671-673-675-777-779-870-872-874-876-878-012115-
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-
719 am cdt thu oct 1 2026

sheboygan wi to pentwater mi south...

.rest of today...south winds 10 to 15 kt veering to northwest
10 to 20 kt. patchy fog. showers and slight chance of
thunderstorms. waves 2 to 4 ft. 
.tonight...north winds 10 to 20 kt increasing to 15 to 25 kt.
patchy fog in the evening. scattered showers. waves 2 to 4 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 becoming 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 south.
waves 3 to 5 ft. 
.sunday...southwest winds 10 to 20 kt becoming northwest. waves
3 to 5 ft. 
.monday...north winds 10 to 20 kt. waves 3 to 5 ft.  

$$

fzus63 kmkx 011219
glflm 
expires:202610012115;;354593

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
719 am 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...

modest southwest winds will continue this morning, then shift 
westerly ahead of a cold front by the middle of today. expect 
winds to then shift northwest with a frontal passage this
afternoon. modest to breezy northerly winds are then forecast 
tonight and friday. strong high pressure around 30.4 inches will 
then overspread the great lakes friday night. this should bring 
lighter winds to the lake friday night into saturday.

a fast-moving low pressure system around 29.8 inches should move 
across or north of lake superior saturday night, with high 
pressure around 30.4 inches moving southeast into the region by 
early next week. south to southwest winds saturday night should 
veer northwest to north sunday into monday across lake michigan.


lmz261-362-364-366-563-565-567-868-012115-
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-
719 am cdt thu oct 1 2026

sheboygan wi to pentwater mi north...

.rest of today...southwest winds 10 to 15 kt becoming northwest
10 to 20 kt. patchy fog this morning. showers this morning, then
chance of showers this afternoon. waves 2 to 4 ft. 
.tonight...north winds 10 to 20 kt becoming northwest. waves 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 3 to 5 ft. 
.friday night...north winds 15 to 25 kt becoming northeast 5 to
10 kt overnight. 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 1 to 3 ft building to 2 to 4 ft. 
.saturday night...south winds 15 to 25 kt becoming southwest to
30 kt. waves 3 to 5 ft building to 4 to 6 ft occasionally to
8 ft. 
.sunday...west winds to 30 kt becoming northwest. waves 4 to 6 ft
occasionally to 8 ft subsiding to 3 to 5 ft. 
.monday...northwest winds 10 to 20 kt. waves 2 to 4 ft.  

$$

fzus63 kmqt 010802
glfls 
expires:202610012000;;344712

open lake forecast for lake superior
national weather service marquette mi
401 am 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 around 29.7 inches lingers over eastern lake superior 
this morning between a 29.0 inch hudson bay low and another 29.7 
inch low over the south plains. high pressure builds to 30.2 inches 
over the northern plains tonight into friday before shifting east to 
the great lakes at 30.3 inches friday night and saturday. 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. 




lsz264-012000-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
401 am edt thu oct 1 2026

.early this morning...north winds 10 to 20 knots. patchy fog.
waves calm to 2 feet. 
.today...northwest winds 10 to 20 knots becoming west 15 to
25 knots in the afternoon. waves building to 2 to 4 feet, then
subsiding to 1 to 3 feet. 
.tonight...northwest winds 15 to 25 knots. waves subsiding to
2 to 4 feet, then building to 3 to 5 feet occasionally to 7 feet.
.friday...northwest winds 20 to 30 knots diminishing to 15 to
25 knots 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 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 building to 1 to 3 feet. 
.saturday night...south winds 15 to 25 knots veering west after
midnight. a chance of showers. waves building to 3 to 6 feet
occasionally to 8 feet. 
.sunday...northwest gales to 40 knots diminishing to 15 to
25 knots. waves building to 5 to 8 feet occasionally to 10 feet,
then subsiding to 2 to 4 feet. 
.monday...northwest winds 10 to 20 knots backing south. waves
subsiding to calm to 2 feet. 

$$

fzus63 kmqt 010802
glfls 
expires:202610012000;;344713

open lake forecast for lake superior
national weather service marquette mi
401 am 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 around 29.7 inches lingers over eastern lake superior 
this morning between a 29.0 inch hudson bay low and another 29.7 
inch low over the south plains. high pressure builds to 30.2 inches 
over the northern plains tonight into friday before shifting east to 
the great lakes at 30.3 inches friday night and saturday. 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. 




lsz265-012000-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
401 am edt thu oct 1 2026

.early this morning...west winds 15 to 25 knots. waves calm to
2 feet. 
.today...northwest winds 15 to 25 knots increasing to 20 to
30 knots in the afternoon, then becoming west to 30 knots with a
few gale force gusts to 35 knots possible late. waves building to
3 to 5 feet occasionally to 7 feet, then subsiding to 2 to
4 feet. 
.tonight...northwest winds 20 to 30 knots increasing to 30 knots
with a few gale force gusts to 35 knots possible late. waves
building to 3 to 6 feet occasionally to 8 feet. 
.friday...northwest winds to 30 knots with a few gale force gusts
to 35 knots possible diminishing to 20 to 30 knots late. waves
building to 5 to 8 feet occasionally to 10 feet, then subsiding
to 2 to 4 feet. 
.friday night...west winds 10 to 20 knots backing southwest after
midnight. 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. a chance of showers. waves
building to 3 to 5 feet occasionally to 7 feet. 
.sunday...northwest gales to 40 knots diminishing to 20 to
30 knots. waves building to 6 to 9 feet occasionally to 11 feet,
then subsiding to 3 to 5 feet occasionally to 7 feet. 
.monday...northwest winds 15 to 25 knots becoming south 10 to
20 knots. waves subsiding to calm to 2 feet. 

$$

fzus63 kmqt 010802
glfls 
expires:202610012000;;344714

open lake forecast for lake superior
national weather service marquette mi
401 am 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 around 29.7 inches lingers over eastern lake superior 
this morning between a 29.0 inch hudson bay low and another 29.7 
inch low over the south plains. high pressure builds to 30.2 inches 
over the northern plains tonight into friday before shifting east to 
the great lakes at 30.3 inches friday night and saturday. 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. 




lsz266-012000-
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-
401 am edt thu oct 1 2026

.early this morning...west winds 15 to 25 knots. patchy fog.
waves calm to 2 feet. 
.today...northwest winds 15 to 25 knots increasing to 20 to
30 knots in the afternoon. areas of dense fog through early
afternoon. waves building to 3 to 5 feet occasionally to 7 feet,
then subsiding to 2 to 4 feet. 
.tonight...northwest winds 20 to 30 knots. waves building to 3 to
6 feet occasionally to 8 feet. 
.friday...northwest winds 20 to 30 knots. waves building to 7 to
10 feet occasionally to 13 feet, then subsiding to 5 to 8 feet
occasionally to 10 feet. 
.friday night...northwest winds 10 to 20 knots becoming west 5 to
15 knots after midnight. waves subsiding to calm to 2 feet. 
.saturday...south winds 10 to 20 knots increasing to 20 to
30 knots by mid afternoon. waves building to 1 to 3 feet. 
.saturday night...south winds 20 to 30 knots veering southwest
after midnight. a chance of showers through midnight, then
showers likely after midnight. waves building to 4 to 7 feet
occasionally to 9 feet. 
.sunday...northwest gales to 45 knots. waves building to 7 to
10 feet occasionally to 13 feet, then subsiding to 3 to 6 feet
occasionally to 8 feet. 
.monday...northwest winds 15 to 25 knots becoming south 10 to
20 knots. waves subsiding to calm to 2 feet. 

$$

fzus63 kmqt 010802
glfls 
expires:202610012000;;344715

open lake forecast for lake superior
national weather service marquette mi
401 am 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 around 29.7 inches lingers over eastern lake superior 
this morning between a 29.0 inch hudson bay low and another 29.7 
inch low over the south plains. high pressure builds to 30.2 inches 
over the northern plains tonight into friday before shifting east to 
the great lakes at 30.3 inches friday night and saturday. 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. 




lsz267-012000-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
401 am edt thu oct 1 2026

.early this morning...southwest winds 10 to 20 knots. patchy fog.
a slight chance of showers. waves calm to 2 feet. 
.today...west winds 10 to 20 knots becoming northwest 15 to
25 knots in the afternoon, then increasing to 20 to 30 knots
late. areas of dense fog through early afternoon. a slight chance
of showers through early afternoon. waves building to 3 to 6 feet
occasionally to 8 feet. 
.tonight...northwest winds 15 to 25 knots. waves 3 to 5 feet
occasionally to 7 feet. 
.friday...northwest winds 20 to 30 knots. a slight chance of
showers through early afternoon. waves building to 6 to 10 feet
occasionally to 13 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 becoming southwest
gales to 35 knots after midnight. a chance of showers through
midnight, then showers likely after midnight. waves building to
4 to 7 feet occasionally to 9 feet. 
.sunday...west gales to 40 knots becoming northwest 20 to
30 knots. a chance of showers. waves building to 9 to 12 feet
occasionally to 15 feet, then subsiding to 3 to 6 feet
occasionally to 8 feet. 
.monday...northwest winds 15 to 25 knots diminishing to 5 to
15 knots. waves subsiding to calm to 2 feet. 

$$

fzus63 kmqt 010802
glfls 
expires:202610012000;;344710

open lake forecast for lake superior
national weather service marquette mi
401 am 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 around 29.7 inches lingers over eastern lake superior 
this morning between a 29.0 inch hudson bay low and another 29.7 
inch low over the south plains. high pressure builds to 30.2 inches 
over the northern plains tonight into friday before shifting east to 
the great lakes at 30.3 inches friday night and saturday. 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. 




lsz162-012000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
401 am edt thu oct 1 2026 /301 am cdt thu oct 1 2026/

.early this morning...northwest winds 10 to 20 knots. waves calm
to 2 feet. 
.today...northwest winds 10 to 20 knots becoming west 15 to
25 knots in the afternoon. waves building to 1 to 3 feet. 
.tonight...northwest 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 west 10 to
20 knots in the afternoon, then diminishing to 5 to 15 knots
late. waves subsiding to calm to 2 feet. 
.friday night...southwest winds 5 to 15 knots backing south after
midnight. waves calm to 2 feet. 
.saturday...south winds 5 to 15 knots increasing to 15 to
25 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. waves building to 1 to 3 feet. 
.sunday...northwest winds 15 to 25 knots diminishing to 5 to
15 knots. waves subsiding to calm to 2 feet. 
.monday...northwest winds 5 to 15 knots becoming south 10 to
20 knots. waves building to 1 to 3 feet. 

$$

fzus63 kmqt 010802
glfls 
expires:202610012000;;344711

open lake forecast for lake superior
national weather service marquette mi
401 am 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 around 29.7 inches lingers over eastern lake superior 
this morning between a 29.0 inch hudson bay low and another 29.7 
inch low over the south plains. high pressure builds to 30.2 inches 
over the northern plains tonight into friday before shifting east to 
the great lakes at 30.3 inches friday night and saturday. 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. 




lsz263-012000-
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-
401 am edt thu oct 1 2026

.early this morning...north winds 10 to 20 knots. waves calm to
2 feet. 
.today...northwest winds 10 to 20 knots backing west in the
afternoon, then increasing to 15 to 25 knots late. waves building
to 2 to 4 feet. 
.tonight...northwest winds 15 to 25 knots. waves building to 3 to
5 feet occasionally to 7 feet. 
.friday...northwest winds 15 to 25 knots becoming west 10 to
20 knots 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 after
midnight. waves subsiding to calm to 2 feet. 
.saturday...south winds 10 to 20 knots. waves building to 1 to
3 feet, then subsiding to 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 diminishing to 15 to
25 knots. waves subsiding to 1 to 3 feet. 
.monday...northwest winds 5 to 15 knots becoming south 15 to
25 knots. waves subsiding to calm to 2 feet, then building to
2 to 4 feet. 

$$