fzus63 kdtx 041403
glflh 
expires:202610042215;;519900

open lake forecast for lake huron
national weather service detroit/pontiac mi
1003 am edt sun oct 4 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, 30.30 inches, will quickly exit east of
the region tonight. low pressure of 29.62 inches then tracks east
across southern ontario tonight into sunday, intensifying to
around 29.44 inches as it tracks east across the james bay area
sunday night. this low will drive a cold front across the region
on sunday, resulting in south winds to start the day becoming
west and northwesterly throughout sunday afternoon and evening.
northwest winds increase to around 25 to 30 knots sunday night
into monday morning, with gale force gusts to 35 knots appearing
more likely.


lhz361-362-042215-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
lake huron from presque isle light to sturgeon point mi beyond
5nm off shore-
1003 am edt sun oct 4 2026

...gale watch in effect from 8 pm edt this evening through monday
morning...

.rest of today...southwest winds 20 to 25 knots becoming west
15 to 20 knots in the afternoon. gusts to 30 knots. waves 5 to
7 feet. waves occasionally around 10 feet. 
.tonight...northwest winds 20 to 25 knots with gusts to 35 knot
gales. waves 6 to 9 feet. waves occasionally around 12 feet. 
.monday...northwest winds 20 to 25 knots decreasing to 15 to
20 knots early in the afternoon. gusts to 35 knot gales. waves
6 to 9 feet. waves occasionally around 12 feet. 
.monday night...northwest winds 15 to 20 knots becoming light and
variable. waves 4 to 6 feet subsiding to 1 to 3 feet after
midnight. waves occasionally around 8 feet. 
.tuesday...south winds 5 to 10 knots increasing to 15 to 20 knots
with gusts to around 30 knots. waves 2 feet or less building to
5 to 7 feet. waves occasionally around 10 feet. 
.wednesday...west winds 15 to 20 knots with gusts to around
30 knots decreasing to 10 to 15 knots by midnight. waves 3 to
5 feet. 
.thursday...west winds 10 to 15 knots. waves 1 to 3 feet building
to 2 to 4 feet. 


$$

fzus63 kdtx 041403
glflh 
expires:202610042215;;519901

open lake forecast for lake huron
national weather service detroit/pontiac mi
1003 am edt sun oct 4 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, 30.30 inches, will quickly exit east of
the region tonight. low pressure of 29.62 inches then tracks east
across southern ontario tonight into sunday, intensifying to
around 29.44 inches as it tracks east across the james bay area
sunday night. this low will drive a cold front across the region
on sunday, resulting in south winds to start the day becoming
west and northwesterly throughout sunday afternoon and evening.
northwest winds increase to around 25 to 30 knots sunday night
into monday morning, with gale force gusts to 35 knots appearing
more likely.


lhz363-042215-
lake huron from sturgeon point to alabaster mi beyond 5nm off
shore-
1003 am edt sun oct 4 2026

.rest of today...southwest winds 15 to 20 knots with gusts to
around 30 knots veering to the west late in the afternoon. waves
3 to 5 feet. 
.tonight...northwest winds 15 to 20 knots increasing to 20 to
25 knots with gusts to around 30 knots in the late evening and
overnight. waves 5 to 7 feet. waves occasionally around 10 feet. 
.monday...northwest winds 20 to 25 knots with gusts to around
30 knots decreasing to 15 to 20 knots in the late morning and
afternoon. waves 6 to 9 feet. waves occasionally around 12 feet. 
.monday night...northwest winds 10 to 15 knots  becoming light
and variable. waves 3 to 5 feet. 
.tuesday...light and variable winds becoming southwest 10 to
15 knots late in the morning...then becoming south 15 to 20 knots
with gusts to around 30 knots late in the afternoon becoming
southwest 20 to 25 knots with gusts to around 30 knots late in
the evening. waves 1 to 3 feet building to 4 to 6 feet late in
the afternoon. waves occasionally around 8 feet. 
.wednesday...southwest winds 15 to 20 knots becoming west 10 to
15 knots. waves 5 to 7 feet subsiding to 2 to 4 feet. waves
occasionally around 10 feet. 
.thursday...west winds 10 to 15 knots. waves 1 to 3 feet. 


$$

fzus63 kdtx 041403
glflh 
expires:202610042215;;519902

open lake forecast for lake huron
national weather service detroit/pontiac mi
1003 am edt sun oct 4 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, 30.30 inches, will quickly exit east of
the region tonight. low pressure of 29.62 inches then tracks east
across southern ontario tonight into sunday, intensifying to
around 29.44 inches as it tracks east across the james bay area
sunday night. this low will drive a cold front across the region
on sunday, resulting in south winds to start the day becoming
west and northwesterly throughout sunday afternoon and evening.
northwest winds increase to around 25 to 30 knots sunday night
into monday morning, with gale force gusts to 35 knots appearing
more likely.


lhz462>464-042215-
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-
1003 am edt sun oct 4 2026

.rest of today...southwest winds 10 to 15 knots. waves 1 to
3 feet. 
.tonight...northwest winds 15 to 20 knots increasing to 20 to
25 knots early in the morning. waves 2 to 4 feet building to 5 to
7 feet in the late evening and overnight. waves occasionally
around 10 feet. 
.monday...northwest winds 20 to 25 knots decreasing to 15 to
20 knots in the late morning and afternoon. waves 5 to 7 feet.
waves occasionally around 10 feet. 
.monday night...northwest winds 10 to 15 knots decreasing to 5 to
10 knots in the late evening and overnight. waves 3 to 5 feet. 
.tuesday...west winds 5 to 10 knots becoming southwest 10 to
15 knots late in the morning...then becoming south 15 to 20 knots
with gusts to around 30 knots late in the afternoon increasing to
20 to 25 knots with gusts to around 30 knots late in the evening.
waves 1 to 3 feet building to 3 to 5 feet late in the afternoon. 
.wednesday...southwest winds 15 to 20 knots becoming west 10 to
15 knots. waves 3 to 5 feet subsiding to 1 to 3 feet . 
.thursday...west winds 10 to 15 knots. waves 1 to 3 feet. 


$$

fzus63 kmkx 041354
glflm 
expires:202610042115;;519686

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
854 am cdt sun oct 4 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...

low pressure will move across southern canada today and deepen to
29.4 inches, approaching james bay by late this afternoon. a cold
front moving across the region this morning will exit to the east
of lake michigan by midday. southwest winds will shift to the 
northwest and remain breezy. a few gusts will approach gales
across northern lake michigan. a few waterspouts remain possible 
across the far northern edge of the lake this evening into tonight
behind the cold front. northwest winds will gradually decrease
tonight through monday, as high pressure of 30.2 inches enters
from the west. 

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 through wednesday and 
become gusty. there remains a risk for gusts to approach gales, 
particularly over the northern half of the open waters. will be 
monitoring for possible headlines as this portion of the period 
draws closer. the low will pull a cold front across the waters 
wednesday night into thursday, delivering scattered showers and
shifting winds to the west northwest.


lmz080-669-671-673-675-777-779-870-872-874-876-878-042115-
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-
854 am cdt sun oct 4 2026

sheboygan wi to pentwater mi south...

.rest of today...west winds 10 to 20 kt becoming northwest. waves
4 to 6 ft occasionally to 8 ft subsiding to 3 to 5 ft. 
.tonight...northwest winds 10 to 20 kt becoming north. waves 3 to
5 ft. 
.monday...north winds 10 to 20 kt diminishing to 10 to 15 kt.
waves 3 to 5 ft subsiding to 2 to 4 ft. 
.monday night...east winds 5 to 10 kt becoming south 10 to 20 kt
overnight. waves 1 to 3 ft. 
.tuesday...south winds to 30 kt increasing to gales to 35 kt.
waves 5 to 8 ft occasionally to 10 ft building to 8 to 11 ft
occasionally to 14 ft. 
.tuesday night...southwest winds to 30 kt becoming west. waves
7 to 10 ft occasionally to 13 ft subsiding to 5 to 8 ft
occasionally to 10 ft. 
.wednesday...west winds 15 to 25 kt diminishing to 10 to 20 kt.
waves 4 to 6 ft occasionally to 8 ft subsiding to 3 to 5 ft. 
.thursday...northwest winds 10 to 20 kt becoming west. waves 2 to
4 ft.  

$$

fzus63 kmkx 041354
glflm 
expires:202610042115;;519685

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
854 am cdt sun oct 4 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...

low pressure will move across southern canada today and deepen to
29.4 inches, approaching james bay by late this afternoon. a cold
front moving across the region this morning will exit to the east
of lake michigan by midday. southwest winds will shift to the 
northwest and remain breezy. a few gusts will approach gales
across northern lake michigan. a few waterspouts remain possible 
across the far northern edge of the lake this evening into tonight
behind the cold front. northwest winds will gradually decrease
tonight through monday, as high pressure of 30.2 inches enters
from the west. 

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 through wednesday and 
become gusty. there remains a risk for gusts to approach gales, 
particularly over the northern half of the open waters. will be 
monitoring for possible headlines as this portion of the period 
draws closer. the low will pull a cold front across the waters 
wednesday night into thursday, delivering scattered showers and
shifting winds to the west northwest.


lmz261-362-364-366-563-565-567-868-042115-
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-
854 am cdt sun oct 4 2026

sheboygan wi to pentwater mi north...

.rest of today...west winds to 30 kt becoming northwest. waves
5 to 8 ft occasionally to 10 ft subsiding to 3 to 5 ft. 
.tonight...northwest winds to 30 kt diminishing to 15 to 25 kt.
slight chance of waterspouts. waves 4 to 6 ft occasionally to
8 ft. 
.monday...northwest winds 15 to 25 kt diminishing to 10 to 20 kt.
waves 3 to 5 ft subsiding to 2 to 4 ft. 
.monday night...southwest winds 10 to 15 kt becoming south 10 to
20 kt. waves 1 to 3 ft. 
.tuesday...south winds to 30 kt increasing to gales to 40 kt in
the afternoon. waves 5 to 8 ft occasionally to 10 ft building to
8 to 11 ft occasionally to 14 ft. 
.tuesday night...southwest gales to 35 kt becoming west. waves
8 to 11 ft occasionally to 14 ft subsiding to 5 to 8 ft
occasionally to 10 ft. 
.wednesday...west winds 15 to 25 kt increasing to 30 kt. waves
3 to 5 ft subsiding to 2 to 4 ft. 
.thursday...northwest winds 10 to 20 kt becoming west 15 to
25 kt. waves 1 to 3 ft.  

$$

fzus63 kmqt 041401
glfls 
expires:202610042000;;519851

open lake forecast for lake superior
national weather service marquette mi
1001 am edt sun oct 4 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...

a 29.7 inch low over northeast ontario this morning will deepen to 
29.5 inches over northern quebec by monday morning. as this low 
departs, 30.3 inch high pressure over the northern plains today will 
shift east to to the great lakes on monday. a 29.5 inch low then 
drops southeast out of northern canada, reaching northern ontario at 
29.5 inches by tuesday evening. this brings 29.6 inch troughing over 
lake superior on tuesday, weakening to 29.7 inches through 
wednesday. high pressure builds back in from the canadian prairie 
and northern plains late in the week, resulting in 30.1 inch 
ridging over lake superior late thursday into friday.




lsz266-042000-
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 am edt sun oct 4 2026

...gale warning in effect through this evening...

.rest of today...northwest gales to 40 knots. sprinkles by mid
afternoon. waves 7 to 10 feet occasionally to 13 feet building to
9 to 12 feet occasionally to 15 feet, then subsiding to 8 to
11 feet occasionally to 14 feet. 
.tonight...northwest gales to 35 knots diminishing to 20 to
30 knots late. a slight chance of waterspouts through midnight. a
chance of showers. waves subsiding to 6 to 9 feet occasionally to
11 feet. 
.monday...northwest winds 15 to 25 knots diminishing to 5 to
15 knots. a chance of showers through early afternoon. waves
subsiding to 2 to 4 feet. 
.monday night...southeast winds 5 to 15 knots becoming south
15 to 25 knots after midnight. waves subsiding to calm to 2 feet,
then building to 2 to 4 feet. 
.tuesday...south winds 20 to 30 knots. a slight chance of showers
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. 
.tuesday night...west winds 15 to 25 knots increasing to 20 to
30 knots after midnight. waves subsiding to 3 to 5 feet
occasionally to 7 feet, then building to 4 to 7 feet occasionally
to 9 feet. 
.wednesday...west winds 20 to 30 knots veering northwest. waves
building to 7 to 10 feet occasionally to 13 feet, then subsiding
to 3 to 5 feet occasionally to 7 feet. 
.thursday...northwest winds 15 to 25 knots becoming west 10 to
20 knots. a chance of showers. waves subsiding to 1 to 3 feet. 

$$

fzus63 kmqt 041401
glfls 
expires:202610042000;;519852

open lake forecast for lake superior
national weather service marquette mi
1001 am edt sun oct 4 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...

a 29.7 inch low over northeast ontario this morning will deepen to 
29.5 inches over northern quebec by monday morning. as this low 
departs, 30.3 inch high pressure over the northern plains today will 
shift east to to the great lakes on monday. a 29.5 inch low then 
drops southeast out of northern canada, reaching northern ontario at 
29.5 inches by tuesday evening. this brings 29.6 inch troughing over 
lake superior on tuesday, weakening to 29.7 inches through 
wednesday. high pressure builds back in from the canadian prairie 
and northern plains late in the week, resulting in 30.1 inch 
ridging over lake superior late thursday into friday.




lsz267-042000-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
1001 am edt sun oct 4 2026

...gale warning in effect through this evening...

.rest of today...northwest gales to 40 knots. a chance of showers
by mid afternoon. waves 7 to 10 feet occasionally to 13 feet
building to 9 to 12 feet occasionally to 15 feet. 
.tonight...northwest gales to 35 knots. a slight chance of
waterspouts. a chance of showers. waves subsiding to 6 to 9 feet
occasionally to 11 feet. 
.monday...north winds 20 to 30 knots becoming northwest 15 to
25 knots in the afternoon, then diminishing to 10 to 20 knots
late. a chance of showers. waves subsiding to 2 to 4 feet. 
.monday night...northwest winds 5 to 15 knots becoming south
10 to 20 knots after midnight. waves subsiding to calm to 2 feet,
then building to 1 to 3 feet. 
.tuesday...south winds 20 to 30 knots. a slight chance of showers
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. 
.tuesday night...west winds 20 to 30 knots. waves subsiding to
3 to 5 feet occasionally to 7 feet, then building to 4 to 7 feet
occasionally to 9 feet. 
.wednesday...west gales to 35 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 5 feet
occasionally to 7 feet. 
.thursday...northwest winds 15 to 25 knots becoming west 10 to
20 knots. a chance of showers. waves subsiding to 1 to 3 feet. 

$$

fzus63 kmqt 041401
glfls 
expires:202610042000;;519847

open lake forecast for lake superior
national weather service marquette mi
1001 am edt sun oct 4 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...

a 29.7 inch low over northeast ontario this morning will deepen to 
29.5 inches over northern quebec by monday morning. as this low 
departs, 30.3 inch high pressure over the northern plains today will 
shift east to to the great lakes on monday. a 29.5 inch low then 
drops southeast out of northern canada, reaching northern ontario at 
29.5 inches by tuesday evening. this brings 29.6 inch troughing over 
lake superior on tuesday, weakening to 29.7 inches through 
wednesday. high pressure builds back in from the canadian prairie 
and northern plains late in the week, resulting in 30.1 inch 
ridging over lake superior late thursday into friday.




lsz162-042000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1001 am edt sun oct 4 2026 /901 am cdt sun oct 4 2026/

.rest of today...northwest winds 20 to 30 knots diminishing to
15 to 25 knots in the afternoon, then backing west late. waves
3 to 5 feet occasionally to 7 feet subsiding to 1 to 3 feet. 
.tonight...northwest winds 10 to 20 knots diminishing to 5 to
15 knots late. waves subsiding to calm to 2 feet. 
.monday...north winds 5 to 15 knots veering south in the
afternoon. waves calm to 2 feet. 
.monday night...southeast winds 10 to 20 knots veering south
after midnight. waves building to 2 to 4 feet. 
.tuesday...southwest winds 15 to 25 knots veering west by mid
afternoon. waves building to 3 to 5 feet occasionally to 7 feet,
then subsiding to 2 to 4 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 15 to 25 knots diminishing to 10 to
20 knots. waves building to 1 to 3 feet, then subsiding to calm
to 2 feet. 
.thursday...west winds 10 to 20 knots. waves calm to 2 feet. 

$$

fzus63 kmqt 041401
glfls 
expires:202610042000;;519848

open lake forecast for lake superior
national weather service marquette mi
1001 am edt sun oct 4 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...

a 29.7 inch low over northeast ontario this morning will deepen to 
29.5 inches over northern quebec by monday morning. as this low 
departs, 30.3 inch high pressure over the northern plains today will 
shift east to to the great lakes on monday. a 29.5 inch low then 
drops southeast out of northern canada, reaching northern ontario at 
29.5 inches by tuesday evening. this brings 29.6 inch troughing over 
lake superior on tuesday, weakening to 29.7 inches through 
wednesday. high pressure builds back in from the canadian prairie 
and northern plains late in the week, resulting in 30.1 inch 
ridging over lake superior late thursday into friday.




lsz263-042000-
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 am edt sun oct 4 2026

.rest of today...northwest winds 20 to 30 knots backing west
late. waves 5 to 8 feet occasionally to 10 feet subsiding to 3 to
6 feet occasionally to 8 feet. 
.tonight...northwest winds 15 to 25 knots diminishing to 10 to
20 knots late. sprinkles through midnight. waves subsiding to
2 to 4 feet. 
.monday...north winds 5 to 15 knots backing northwest in the
afternoon, then backing south late. waves subsiding to calm to
2 feet. 
.monday night...southeast winds 10 to 20 knots becoming south
15 to 25 knots after midnight. waves building to 2 to 4 feet. 
.tuesday...south winds 15 to 25 knots veering southwest by mid
afternoon. waves building to 3 to 5 feet occasionally to 7 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 15 to 25 knots. waves building to 3 to
6 feet occasionally to 8 feet, then subsiding to 1 to 3 feet. 
.thursday...west winds 10 to 20 knots. waves subsiding to calm to
2 feet. 

$$

fzus63 kmqt 041401
glfls 
expires:202610042000;;519849

open lake forecast for lake superior
national weather service marquette mi
1001 am edt sun oct 4 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...

a 29.7 inch low over northeast ontario this morning will deepen to 
29.5 inches over northern quebec by monday morning. as this low 
departs, 30.3 inch high pressure over the northern plains today will 
shift east to to the great lakes on monday. a 29.5 inch low then 
drops southeast out of northern canada, reaching northern ontario at 
29.5 inches by tuesday evening. this brings 29.6 inch troughing over 
lake superior on tuesday, weakening to 29.7 inches through 
wednesday. high pressure builds back in from the canadian prairie 
and northern plains late in the week, resulting in 30.1 inch 
ridging over lake superior late thursday into friday.




lsz264-042000-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
1001 am edt sun oct 4 2026

...gale warning in effect until 2 pm edt this afternoon...

.rest of today...northwest gales to 35 knots diminishing to 20 to
30 knots late. waves 7 to 10 feet occasionally to 13 feet
subsiding to 5 to 8 feet occasionally to 10 feet. 
.tonight...northwest winds 20 to 30 knots diminishing to 15 to
25 knots after midnight. sprinkles through midnight. waves
subsiding to 3 to 6 feet occasionally to 8 feet. 
.monday...northwest winds 10 to 20 knots diminishing to 5 to
15 knots in the afternoon. waves subsiding to calm to 2 feet. 
.monday night...south winds 5 to 15 knots increasing to 15 to
25 knots after midnight. waves building to 2 to 4 feet. 
.tuesday...south winds 15 to 25 knots veering southwest by mid
afternoon. a slight chance of showers by mid afternoon. waves
building to 3 to 5 feet occasionally to 7 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 6 feet occasionally to 8 feet. 
.wednesday...west winds 20 to 30 knots becoming northwest 15 to
25 knots. waves building to 4 to 7 feet occasionally to 9 feet,
then subsiding to 1 to 3 feet. 
.thursday...northwest winds 10 to 20 knots backing west. waves
subsiding to calm to 2 feet. 

$$

fzus63 kmqt 041401
glfls 
expires:202610042000;;519850

open lake forecast for lake superior
national weather service marquette mi
1001 am edt sun oct 4 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...

a 29.7 inch low over northeast ontario this morning will deepen to 
29.5 inches over northern quebec by monday morning. as this low 
departs, 30.3 inch high pressure over the northern plains today will 
shift east to to the great lakes on monday. a 29.5 inch low then 
drops southeast out of northern canada, reaching northern ontario at 
29.5 inches by tuesday evening. this brings 29.6 inch troughing over 
lake superior on tuesday, weakening to 29.7 inches through 
wednesday. high pressure builds back in from the canadian prairie 
and northern plains late in the week, resulting in 30.1 inch 
ridging over lake superior late thursday into friday.




lsz265-042000-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
1001 am edt sun oct 4 2026

...gale warning in effect through this evening...

.rest of today...northwest gales to 40 knots. waves 5 to 8 feet
occasionally to 10 feet. 
.tonight...northwest gales to 35 knots diminishing to 20 to
30 knots late. sprinkles through midnight. waves 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. 
.monday night...southeast winds 5 to 15 knots becoming south
15 to 25 knots after midnight. waves building to 2 to 4 feet. 
.tuesday...south winds 20 to 30 knots becoming southwest 15 to
25 knots by mid afternoon. waves building to 3 to 5 feet
occasionally to 7 feet, then subsiding to 1 to 3 feet. 
.tuesday night...west winds 20 to 30 knots. waves building to
4 to 7 feet occasionally to 9 feet. 
.wednesday...west gales to 35 knots becoming northwest 20 to
30 knots. waves building to 5 to 8 feet occasionally to 10 feet,
then subsiding to 2 to 4 feet. 
.thursday...northwest winds 20 to 30 knots becoming west 15 to
25 knots. waves subsiding to calm to 2 feet, then building to
1 to 3 feet. 

$$