fzus63 kdtx 170736
glflh 
expires:202610171545;;241146

open lake forecast for lake huron
national weather service detroit/pontiac mi
336 am edt sat oct 17 2026

for waters beyond five nautical miles off shore on lake huron

waves are the significant wave height - the average of the highest
1/3 of the wave spectrum. occasional wave height is the average of
the highest 1/10 of the wave spectrum.

.synopsis...a ridge of high pressure passes across the central
great lakes this morning then settles across the ohio valley on
sunday. this produces gusty westerly winds on sunday as deep low
pressure tracks across northern ontario. the high pressure then
builds northward into the great lakes early next week.


lhz361-171545-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
336 am edt sat oct 17 2026

.today...northwest winds 5 to 10 knots becoming southwest 10 to
15 knots late in the morning...then increasing to 15 to 20 knots
with gusts to around 30 knots early in the afternoon becoming
west 20 to 25 knots with gusts to around 30 knots late in the
afternoon. waves 1 to 3 feet building to 3 to 5 feet late in the
afternoon. 
.tonight...southwest winds 15 to 20 knots. gusts to 30 knots in
the evening. waves 3 to 5 feet. 
.sunday...southwest winds 15 to 20 knots decreasing to 10 to
15 knots early in the afternoon. gusts to 30 knots. waves 3 to
5 feet. 
.sunday night...southwest winds 10 to 15 knots. gusts to 30 knots
early in the evening. waves 2 to 4 feet. 
.monday...southwest winds 10 to 15 knots decreasing to 5 to
10 knots late in the morning...then becoming light and variable
late in the afternoon. waves 2 feet or less. 
.tuesday...light and variable winds becoming east 5 to 10 knots .
waves 2 feet or less. 
.wednesday...southeast winds 5 to 10 knots. waves 2 feet or less.


$$

fzus63 kdtx 170736
glflh 
expires:202610171545;;241147

open lake forecast for lake huron
national weather service detroit/pontiac mi
336 am edt sat oct 17 2026

for waters beyond five nautical miles off shore on lake huron

waves are the significant wave height - the average of the highest
1/3 of the wave spectrum. occasional wave height is the average of
the highest 1/10 of the wave spectrum.

.synopsis...a ridge of high pressure passes across the central
great lakes this morning then settles across the ohio valley on
sunday. this produces gusty westerly winds on sunday as deep low
pressure tracks across northern ontario. the high pressure then
builds northward into the great lakes early next week.


lhz362-363-171545-
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-
336 am edt sat oct 17 2026

.today...northwest winds 10 to 15 knots decreasing to 5 to
10 knots late in the morning...then becoming southwest 10 to
15 knots early in the afternoon increasing to 15 to 20 knots late
in the afternoon. waves 4 to 6 feet subsiding to 1 to 3 feet
early in the afternoon...then building to 2 to 4 feet late in the
afternoon. waves occasionally around 8 feet. 
.tonight...southwest winds 15 to 20 knots. waves 4 to 6 feet.
waves occasionally around 8 feet. 
.sunday...southwest winds 20 to 25 knots with isolated gusts to 
35 knot gales. waves 6 to 9 feet. waves occasionally around 12 
feet.

.sunday night...southwest winds 20 to 25 knots with gusts to
35 knot gales decreasing to 10 to 15 knots. waves 8 to 12 feet
subsiding to 4 to 6 feet after midnight. waves occasionally
around 15 feet. 
.monday...southwest winds 10 to 15 knots decreasing to 5 to
10 knots late in the morning...then becoming light and variable
late in the afternoon. waves 3 to 5 feet subsiding to 1 to
3 feet. 
.tuesday...light and variable winds becoming east 5 to 10 knots.
waves 2 feet or less. 
.wednesday...light and variable winds becoming southeast 5 to
10 knots. waves 2 feet or less. 


$$

fzus63 kdtx 170736
glflh 
expires:202610171545;;241148

open lake forecast for lake huron
national weather service detroit/pontiac mi
336 am edt sat oct 17 2026

for waters beyond five nautical miles off shore on lake huron

waves are the significant wave height - the average of the highest
1/3 of the wave spectrum. occasional wave height is the average of
the highest 1/10 of the wave spectrum.

.synopsis...a ridge of high pressure passes across the central
great lakes this morning then settles across the ohio valley on
sunday. this produces gusty westerly winds on sunday as deep low
pressure tracks across northern ontario. the high pressure then
builds northward into the great lakes early next week.


lhz462>464-171545-
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-
336 am edt sat oct 17 2026

.today...north winds 15 to 20 knots decreasing to 10 to 15 knots
late in the morning...then becoming northwest 5 to 10 knots early
in the afternoon becoming west 10 to 15 knots late in the
afternoon. waves 6 to 9 feet subsiding to 3 to 5 feet in the
afternoon. waves occasionally around 12 feet. 
.tonight...southwest winds 15 to 20 knots. waves 2 to 4 feet. 
.sunday...southwest winds 15 to 20 knots. waves 3 to 5 feet. 
.sunday night...southwest winds 15 to 20 knots decreasing to
10 to 15 knots after midnight. waves 3 to 5 feet. 
.monday...southwest winds 10 to 15 knots decreasing to 5 to
10 knots late in the morning...then becoming light and variable
late in the afternoon. waves 2 feet or less. 
.tuesday...light and variable winds becoming northeast 5 to
10 knots by midnight. waves 2 feet or less. 
.wednesday...southeast winds 5 to 10 knots until afternoon
becoming light and variable...then becoming southeast 5 to
10 knots by midnight. waves 2 feet or less. 


$$

fzus63 kmkx 170800
glflm 
expires:202610171500;;241933

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
300 am cdt sat oct 17 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 around 29.4 inches has moved well east of the region,
as strong high pressure around 30.6 inches remains over the 
central plains but begins to nudge in. scattered showers will 
linger this morning over the southern half of lake michigan. a 
few rumbles of thunder and some isolated waterspout potential will
remain over the south half of lake michigan.

as the high shifts toward the ohio river valley today, strong low
pressure around 29.0 inches will develop in south central canada,
shifting toward and into hudson bay on sunday. this will likely 
bring southwest gales to far northern portions of lake michigan 
tonight into sunday night. gale warning is now in effect from 9z 
sunday until 6z monday for the northern third of lake michigan.

high pressure around 30.5 inches should develop east northeast
of the region next week, bringing dry conditions and light to
modest winds.


lmz261-362-364-563-171500-
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-
300 am cdt sat oct 17 2026

sturgeon bay wi to point betsie mi north...

...gale warning in effect from late tonight through late sunday
night...

.today...west winds 10 to 20 kt increasing to 30 kt late this
morning, then becoming southwest gales to 35 kt this afternoon.
waves 1 to 3 ft building to 6 to 9 ft occasionally to 12 ft. 
.tonight...southwest gales to 40 kt diminishing to gales to
35 kt. waves 6 to 9 ft occasionally to 12 ft building to 8 to
12 ft occasionally to 16 ft. 
.sunday...southwest gales to 40 kt. waves 10 to 14 ft
occasionally to 18 ft. 
.sunday night...southwest gales to 40 kt diminishing to gales to
35 kt. waves 10 to 14 ft occasionally to 18 ft subsiding to 7 to
10 ft occasionally to 13 ft. 
.monday...southwest winds 10 to 20 kt. waves 4 to 6 ft
occasionally to 8 ft subsiding to 2 to 4 ft. 
.monday night...southwest winds 5 to 10 kt backing to southeast.
waves 1 to 3 ft. 
.tuesday...southeast winds 5 to 10 kt. waves 1 ft or less. 
.wednesday...south winds 10 to 15 kt increasing to 10 to 20 kt.
waves 1 to 3 ft.  

$$

fzus63 kmkx 170800
glflm 
expires:202610171500;;241934

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
300 am cdt sat oct 17 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 around 29.4 inches has moved well east of the region,
as strong high pressure around 30.6 inches remains over the 
central plains but begins to nudge in. scattered showers will 
linger this morning over the southern half of lake michigan. a 
few rumbles of thunder and some isolated waterspout potential will
remain over the south half of lake michigan.

as the high shifts toward the ohio river valley today, strong low
pressure around 29.0 inches will develop in south central canada,
shifting toward and into hudson bay on sunday. this will likely 
bring southwest gales to far northern portions of lake michigan 
tonight into sunday night. gale warning is now in effect from 9z 
sunday until 6z monday for the northern third of lake michigan.

high pressure around 30.5 inches should develop east northeast
of the region next week, bringing dry conditions and light to
modest winds.


lmz366-565-567-868-171500-
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 pentwater to manistee mi 5 nm offshore to mid
lake-
300 am cdt sat oct 17 2026

sturgeon bay wi to point betsie mi south to sheboygan wi to
pentwater mi...

.today...west winds 10 to 15 kt increasing to 10 to 20 kt late
this morning, then becoming southwest 15 to 25 kt early this
afternoon increasing to 30 kt late. waves 3 to 5 ft building to
4 to 7 ft occasionally to 9 ft. 
.tonight...southwest winds to 30 kt. waves 6 to 9 ft occasionally
to 12 ft building to 8 to 11 ft occasionally to 14 ft. 
.sunday...southwest winds to 30 kt increasing to gales to 35 kt.
waves 10 to 14 ft occasionally to 18 ft. 
.sunday night...southwest gales to 35 kt diminishing to 15 to
25 kt overnight. waves 8 to 12 ft occasionally to 16 ft subsiding
to 6 to 9 ft occasionally to 12 ft. 
.monday...southwest winds 10 to 20 kt diminishing to 10 to 15 kt.
waves 4 to 6 ft occasionally to 8 ft subsiding to 2 to 4 ft. 
.monday night...south winds 10 to 15 kt diminishing to less than
10 kt. waves 1 to 2 ft. 
.tuesday...southeast winds 5 to 10 kt becoming south. waves 1 ft
or less. 
.wednesday...south winds 10 to 15 kt increasing to 10 to 20 kt.
waves 1 to 3 ft.  

$$

fzus63 kmkx 170800
glflm 
expires:202610171500;;241935

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
300 am cdt sat oct 17 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 around 29.4 inches has moved well east of the region,
as strong high pressure around 30.6 inches remains over the 
central plains but begins to nudge in. scattered showers will 
linger this morning over the southern half of lake michigan. a 
few rumbles of thunder and some isolated waterspout potential will
remain over the south half of lake michigan.

as the high shifts toward the ohio river valley today, strong low
pressure around 29.0 inches will develop in south central canada,
shifting toward and into hudson bay on sunday. this will likely 
bring southwest gales to far northern portions of lake michigan 
tonight into sunday night. gale warning is now in effect from 9z 
sunday until 6z monday for the northern third of lake michigan.

high pressure around 30.5 inches should develop east northeast
of the region next week, bringing dry conditions and light to
modest winds.


lmz080-669-671-673-675-777-779-870-872-874-876-878-171500-
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-
300 am cdt sat oct 17 2026

sheboygan wi to pentwater mi south...

.today...north winds 10 to 15 kt becoming west 10 to 20 kt late
this morning, then becoming southwest 15 to 25 kt early this
afternoon increasing to 30 kt late. waves 6 to 9 ft occasionally
to 12 ft subsiding to 4 to 7 ft occasionally to 9 ft. 
.tonight...southwest winds to 30 kt. waves 7 to 10 ft
occasionally to 13 ft. 
.sunday...southwest winds to 30 kt becoming south gales to 35 kt.
waves 8 to 11 ft occasionally to 14 ft building to 10 to 14 ft
occasionally to 18 ft. 
.sunday night...southwest gales to 35 kt diminishing to 15 to
25 kt overnight. waves 8 to 12 ft occasionally to 16 ft subsiding
to 5 to 8 ft occasionally to 10 ft. 
.monday...southwest winds 10 to 20 kt becoming south 10 to 15 kt.
waves 3 to 5 ft subsiding to 2 to 4 ft. 
.monday night...south winds 10 to 15 kt becoming southeast less
than 10 kt. waves 1 to 2 ft. 
.tuesday...southeast winds 5 to 10 kt. waves 1 ft or less. 
.wednesday...south winds 10 to 15 kt increasing to 10 to 20 kt.
waves 1 to 3 ft.  

$$

fzus63 kmqt 170801
glfls 
expires:202610172000;;241964

open lake forecast for lake superior
national weather service marquette mi
400 am edt sat oct 17 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 30.5 inch high over the plains slides south of the great lakes 
today before building to 30.6 inches over the mid-atlantic sunday 
morning. this high shifts east into the canadian maritimes into 
sunday night while a 29.1 inch low moves from manitoba to hudson 
bay. this low will bring a 30.0 inch through across western lake 
superior sunday afternoon. high pressure ridging of 30.3 inches 
returns to the upper great lakes by monday. this builds to 30.4 
inches over lake superior monday night and continues building to 
30.5 inches tuesday morning over northern quebec. ridging over lake 
superior will weaken into wednesday. a 30.1 inch trough will move 
through lake superior wednesday night. 




lsz162-172000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
400 am edt sat oct 17 2026 /300 am cdt sat oct 17 2026/

...gale warning in effect from 8 am edt /7 am cdt/ this morning
to 2 pm edt /1 pm cdt/ this afternoon...
...gale watch in effect from this evening through sunday
afternoon...

.early this morning...southwest winds 15 to 25 knots. waves 1 to
3 feet building to 3 to 5 feet occasionally to 7 feet. 
.today...southwest winds 20 to 30 knots increasing to gales to
35 knots in the afternoon, then diminishing to 20 to 30 knots
late. waves building to 7 to 10 feet occasionally to 13 feet,
then subsiding to 4 to 7 feet occasionally to 9 feet. 
.tonight...southwest winds 20 to 30 knots increasing to gales to
35 knots after midnight. waves building to 8 to 11 feet
occasionally to 14 feet. 
.sunday...southwest gales to 35 knots diminishing to 20 to
30 knots late. waves subsiding to 4 to 7 feet occasionally to
9 feet. 
.sunday night...southwest winds 15 to 25 knots becoming west 5 to
15 knots after midnight. waves subsiding to calm to 2 feet. 
.monday...north winds 5 to 15 knots veering east by mid
afternoon. waves calm to 2 feet. 
.monday night...east winds 5 to 15 knots. waves calm to 2 feet. 
.tuesday...east winds 5 to 15 knots veering south. waves calm to
2 feet. 
.wednesday...south winds 5 to 15 knots veering southwest. waves
calm to 2 feet. 

$$

fzus63 kmqt 170801
glfls 
expires:202610172000;;241965

open lake forecast for lake superior
national weather service marquette mi
400 am edt sat oct 17 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 30.5 inch high over the plains slides south of the great lakes 
today before building to 30.6 inches over the mid-atlantic sunday 
morning. this high shifts east into the canadian maritimes into 
sunday night while a 29.1 inch low moves from manitoba to hudson 
bay. this low will bring a 30.0 inch through across western lake 
superior sunday afternoon. high pressure ridging of 30.3 inches 
returns to the upper great lakes by monday. this builds to 30.4 
inches over lake superior monday night and continues building to 
30.5 inches tuesday morning over northern quebec. ridging over lake 
superior will weaken into wednesday. a 30.1 inch trough will move 
through lake superior wednesday night. 




lsz263-172000-
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-
400 am edt sat oct 17 2026

...gale warning in effect from 11 am edt this morning through
this afternoon...
...gale watch in effect from this evening through sunday
afternoon...

.early this morning...southwest winds 20 to 30 knots. waves 2 to
4 feet building to 3 to 6 feet occasionally to 8 feet. 
.today...southwest winds 20 to 30 knots increasing to gales to
35 knots in the afternoon, then diminishing to 20 to 30 knots
late. waves building to 8 to 11 feet occasionally to 14 feet,
then subsiding to 6 to 9 feet occasionally to 11 feet. 
.tonight...southwest winds 20 to 30 knots increasing to gales to
40 knots after midnight. waves subsiding to 5 to 8 feet
occasionally to 10 feet, then building to 9 to 12 feet
occasionally to 15 feet. 
.sunday...southwest gales to 40 knots. waves building to 10 to
14 feet occasionally to 18 feet, then subsiding to 5 to 8 feet
occasionally to 10 feet. 
.sunday night...southwest winds 20 to 30 knots becoming west
10 to 20 knots after midnight. waves subsiding to 1 to 3 feet. 
.monday...north winds less than 10 knots veering northeast by mid
afternoon. waves subsiding to calm to 2 feet. 
.monday night...east winds less than 10 knots. waves calm to
2 feet. 
.tuesday...east winds 5 to 15 knots veering south. waves calm to
2 feet. 
.wednesday...south winds 5 to 15 knots veering southwest. waves
building to 1 to 3 feet, then subsiding to calm to 2 feet. 

$$

fzus63 kmqt 170801
glfls 
expires:202610172000;;241966

open lake forecast for lake superior
national weather service marquette mi
400 am edt sat oct 17 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 30.5 inch high over the plains slides south of the great lakes 
today before building to 30.6 inches over the mid-atlantic sunday 
morning. this high shifts east into the canadian maritimes into 
sunday night while a 29.1 inch low moves from manitoba to hudson 
bay. this low will bring a 30.0 inch through across western lake 
superior sunday afternoon. high pressure ridging of 30.3 inches 
returns to the upper great lakes by monday. this builds to 30.4 
inches over lake superior monday night and continues building to 
30.5 inches tuesday morning over northern quebec. ridging over lake 
superior will weaken into wednesday. a 30.1 inch trough will move 
through lake superior wednesday night. 




lsz264-172000-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
400 am edt sat oct 17 2026

...gale warning in effect from 11 am edt this morning through
this afternoon...
...gale watch in effect from this evening through sunday
afternoon...

.early this morning...west winds 15 to 25 knots. waves 1 to
3 feet building to 3 to 5 feet occasionally to 7 feet. 
.today...west gales to 35 knots backing southwest in the
afternoon. waves building to 8 to 11 feet occasionally to
14 feet, then subsiding to 6 to 9 feet occasionally to 11 feet. 
.tonight...southwest winds 20 to 30 knots increasing to gales to
40 knots after midnight. waves subsiding to 5 to 8 feet
occasionally to 10 feet, then building to 9 to 12 feet
occasionally to 15 feet. 
.sunday...southwest gales to 40 knots. waves building to 10 to
14 feet occasionally to 18 feet, then subsiding to 7 to 10 feet
occasionally to 13 feet. 
.sunday night...west winds 20 to 30 knots diminishing to 10 to
20 knots after midnight. waves subsiding to 2 to 4 feet. 
.monday...northwest winds less than 10 knots veering north by mid
afternoon. waves subsiding to calm to 2 feet. 
.monday night...east winds less than 10 knots. waves calm to
2 feet. 
.tuesday...southeast winds 5 to 15 knots veering south. waves
calm to 2 feet. 
.wednesday...south winds 5 to 15 knots veering southwest. waves
building to 1 to 3 feet. 

$$

fzus63 kmqt 170801
glfls 
expires:202610172000;;241967

open lake forecast for lake superior
national weather service marquette mi
400 am edt sat oct 17 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 30.5 inch high over the plains slides south of the great lakes 
today before building to 30.6 inches over the mid-atlantic sunday 
morning. this high shifts east into the canadian maritimes into 
sunday night while a 29.1 inch low moves from manitoba to hudson 
bay. this low will bring a 30.0 inch through across western lake 
superior sunday afternoon. high pressure ridging of 30.3 inches 
returns to the upper great lakes by monday. this builds to 30.4 
inches over lake superior monday night and continues building to 
30.5 inches tuesday morning over northern quebec. ridging over lake 
superior will weaken into wednesday. a 30.1 inch trough will move 
through lake superior wednesday night. 




lsz265-172000-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
400 am edt sat oct 17 2026

.early this morning...west winds 15 to 25 knots. waves 2 to
4 feet subsiding to 1 to 3 feet, then building to 2 to 4 feet. 
.today...west winds 20 to 30 knots becoming southwest 15 to
25 knots late. waves building to 3 to 6 feet occasionally to
8 feet, then subsiding to 2 to 4 feet. 
.tonight...southwest winds 15 to 25 knots increasing to 20 to
30 knots after midnight. waves building to 3 to 6 feet
occasionally to 8 feet. 
.sunday...southwest winds 20 to 30 knots diminishing to 15 to
25 knots late. waves building to 4 to 7 feet occasionally to
9 feet, then subsiding to 1 to 3 feet. 
.sunday night...southwest winds 15 to 25 knots becoming west
10 to 20 knots after midnight. waves subsiding to calm to 2 feet.
.monday...west winds 5 to 15 knots veering northeast by mid
afternoon. waves calm to 2 feet. 
.monday night...east winds 5 to 15 knots veering southeast after
midnight. waves calm to 2 feet. 
.tuesday...southeast winds 5 to 15 knots becoming south 10 to
20 knots. waves calm to 2 feet. 
.wednesday...south winds 10 to 20 knots veering southwest. waves
building to 1 to 3 feet, then subsiding to calm to 2 feet. 

$$

fzus63 kmqt 170801
glfls 
expires:202610172000;;241968

open lake forecast for lake superior
national weather service marquette mi
400 am edt sat oct 17 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 30.5 inch high over the plains slides south of the great lakes 
today before building to 30.6 inches over the mid-atlantic sunday 
morning. this high shifts east into the canadian maritimes into 
sunday night while a 29.1 inch low moves from manitoba to hudson 
bay. this low will bring a 30.0 inch through across western lake 
superior sunday afternoon. high pressure ridging of 30.3 inches 
returns to the upper great lakes by monday. this builds to 30.4 
inches over lake superior monday night and continues building to 
30.5 inches tuesday morning over northern quebec. ridging over lake 
superior will weaken into wednesday. a 30.1 inch trough will move 
through lake superior wednesday night. 




lsz266-172000-
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-
400 am edt sat oct 17 2026

.early this morning...west winds 15 to 25 knots. waves 3 to
5 feet occasionally to 7 feet subsiding to 2 to 4 feet. 
.today...west winds 20 to 30 knots becoming southwest to 30 knots
with a few gale force gusts to 35 knots possible in the
afternoon, then diminishing to 20 to 30 knots late. waves
building to 8 to 11 feet occasionally to 14 feet, then subsiding
to 6 to 9 feet occasionally to 11 feet. 
.tonight...southwest winds 15 to 25 knots increasing to 20 to
30 knots after midnight. waves subsiding to 4 to 7 feet
occasionally to 9 feet, then building to 7 to 10 feet
occasionally to 13 feet. 
.sunday...southwest winds 20 to 30 knots. waves building to 9 to
12 feet occasionally to 15 feet, then subsiding to 7 to 10 feet
occasionally to 13 feet. 
.sunday night...southwest winds 20 to 30 knots becoming west
10 to 20 knots after midnight. waves subsiding to 2 to 4 feet. 
.monday...northwest winds 5 to 15 knots veering north by mid
afternoon. waves subsiding to calm to 2 feet. 
.monday night...east winds 5 to 15 knots. waves calm to 2 feet. 
.tuesday...southeast winds 5 to 15 knots becoming south 10 to
20 knots. waves calm to 2 feet. 
.wednesday...south winds 10 to 20 knots veering southwest. waves
building to 2 to 4 feet, then subsiding to 1 to 3 feet. 

$$

fzus63 kmqt 170801
glfls 
expires:202610172000;;241969

open lake forecast for lake superior
national weather service marquette mi
400 am edt sat oct 17 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 30.5 inch high over the plains slides south of the great lakes 
today before building to 30.6 inches over the mid-atlantic sunday 
morning. this high shifts east into the canadian maritimes into 
sunday night while a 29.1 inch low moves from manitoba to hudson 
bay. this low will bring a 30.0 inch through across western lake 
superior sunday afternoon. high pressure ridging of 30.3 inches 
returns to the upper great lakes by monday. this builds to 30.4 
inches over lake superior monday night and continues building to 
30.5 inches tuesday morning over northern quebec. ridging over lake 
superior will weaken into wednesday. a 30.1 inch trough will move 
through lake superior wednesday night. 




lsz267-172000-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
400 am edt sat oct 17 2026

.early this morning...west winds 10 to 20 knots. waves 3 to
5 feet occasionally to 7 feet subsiding to 2 to 4 feet. 
.today...southwest winds 15 to 25 knots increasing to 20 to
30 knots in the afternoon, then diminishing to 15 to 25 knots
late. waves building to 4 to 7 feet occasionally to 9 feet, then
subsiding to 3 to 6 feet occasionally to 8 feet. 
.tonight...southwest winds 20 to 30 knots increasing to 30 knots
with a few gale force gusts to 35 knots possible late. waves
building to 5 to 8 feet occasionally to 10 feet. 
.sunday...southwest winds to 30 knots with a few gale force gusts
to 35 knots possible diminishing to 20 to 30 knots in the
afternoon. waves building to 6 to 9 feet occasionally to 11 feet,
then subsiding to 3 to 6 feet occasionally to 8 feet. 
.sunday night...southwest winds 20 to 30 knots diminishing to
10 to 20 knots after midnight. waves subsiding to 2 to 4 feet. 
.monday...west winds 5 to 15 knots veering north by mid
afternoon. waves subsiding to calm to 2 feet. 
.monday night...northeast winds 5 to 15 knots veering east after
midnight. waves calm to 2 feet. 
.tuesday...southeast winds 5 to 15 knots becoming south 10 to
20 knots. waves calm to 2 feet. 
.wednesday...south winds 10 to 20 knots. waves building to 1 to
3 feet. 

$$