fzus61 kbuf 171403
glflo 
expires:202610172100;;255424

open lake forecast for lake ontario
national weather service buffalo ny
1003 am edt sat oct 17 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 29.1 inch low over the canadian maritimes today will 
move northeast and into the north atlantic by this evening. a 30.5 
inch high will then build into the ohio valley tonight, expanding 
into the mid atlantic and new england sunday through monday while 
gradually weakening to 30.3 inches. another 30.4 inch high will then 
build east across quebec tuesday through wednesday.


loz063>065-172100-
lake ontario open waters from hamlin beach to the saint lawrence
river-
1003 am edt sat oct 17 2026

.this afternoon...north winds 15 to 20 knots becoming northwest
10 to 15 knots. waves 3 to 6 feet subsiding to 1 to 2 feet. 
.tonight...west winds 10 to 15 knots becoming southwest. waves
1 to 3 feet. 
.sunday...southwest winds 10 to 15 knots. waves 1 to 3 feet
building to 2 to 4 feet, then subsiding to 1 to 3 feet. 
.sunday night...southwest winds 10 to 15 knots. waves 1 to
3 feet. 
.monday...southwest winds 5 to 15 knots becoming north less than
10 knots. waves 1 to 3 feet subsiding to 1 foot or less. 
.tuesday...northeast winds 5 to 15 knots. waves 2 feet or less. 
.wednesday...northeast winds 5 to 15 knots becoming southeast.
waves 2 feet or less. 

$$

fzus61 kbuf 171403
glflo 
expires:202610172100;;255423

open lake forecast for lake ontario
national weather service buffalo ny
1003 am edt sat oct 17 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 29.1 inch low over the canadian maritimes today will 
move northeast and into the north atlantic by this evening. a 30.5 
inch high will then build into the ohio valley tonight, expanding 
into the mid atlantic and new england sunday through monday while 
gradually weakening to 30.3 inches. another 30.4 inch high will then 
build east across quebec tuesday through wednesday.


loz062-172100-
lake ontario open waters from the niagara river to hamlin beach-
1003 am edt sat oct 17 2026

.this afternoon...north winds 10 to 15 knots becoming west. waves
2 to 4 feet subsiding to 1 to 3 feet. 
.tonight...west winds 10 to 15 knots becoming southwest 15 to
20 knots. waves 1 to 3 feet building to 2 to 4 feet. 
.sunday...southwest winds 10 to 15 knots increasing to 15 to
20 knots. waves 2 to 4 feet building to 3 to 5 feet. 
.sunday night...southwest winds 15 to 20 knots diminishing to
10 to 15 knots. waves 3 to 5 feet subsiding to 1 to 3 feet. 
.monday...west winds 10 knots or less becoming north. waves
2 feet or less. 
.tuesday...northeast winds 10 knots or less. waves 2 feet or
less. 
.wednesday...northeast winds 10 knots or less becoming east.
waves 2 feet or less. 

$$

fzus61 kcle 171348
glfle 
expires:202610172015;;254973

open lake forecast for lake erie
national weather service cleveland oh
948 am edt sat oct 17 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... 
high pressure 30.50 inches will build into the region today, 
weakening slightly to 30.30 inches by mid to late next week.


lez164>168-172015-
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-geneva-on-
the-lake to conneaut oh beyond 5 nm off shoreline to us-
canadian border-
948 am edt sat oct 17 2026

.this afternoon...north winds 15 to 20 knots becoming northwest
5 to 15 knots. waves 4 to 7 feet subsiding to 1 to 3 feet. waves
occasionally around 9 feet. 
.tonight...west winds 5 to 15 knots becoming southwest. waves
2 feet or less. 
.sunday...southwest winds 10 to 15 knots. waves 1 to 3 feet. 
.sunday night...southwest winds 5 to 15 knots becoming south.
waves 2 feet or less. 
.monday...southwest winds 10 knots or less becoming northeast.
waves 1 foot or less. 
.tuesday...northeast winds 5 to 10 knots becoming east. waves
2 feet or less. 
.wednesday...east winds 5 to 10 knots. waves 1 to 3 feet. 

$$

fzus61 kcle 171348
glfle 
expires:202610172015;;254974

open lake forecast for lake erie
national weather service cleveland oh
948 am edt sat oct 17 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... 
high pressure 30.50 inches will build into the region today, 
weakening slightly to 30.30 inches by mid to late next week.


lez061-169-172015-
ripley to buffalo ny extending from 5nm off shoreline to us-
canadian border-
conneaut oh to ripley ny beyond 5 nm off shoreline to us-
canadian border-
948 am edt sat oct 17 2026

.this afternoon...north winds 15 to 20 knots becoming northwest
and diminishing to 10 knots or less. waves 3 to
5 feet subsiding to 1 to 3 feet. 
.tonight...west winds 5 to 15 knots becoming southwest. waves
2 feet or less. 
.sunday...southwest winds 10 to 15 knots increasing to 15 to
20 knots. waves 1 to 3 feet. 
.sunday night...southwest winds 10 to 15 knots becoming south.
waves 1 to 3 feet. 
.monday...southwest winds 10 knots or less becoming north. waves
1 foot or less. 
.tuesday...northeast winds 5 to 10 knots becoming east. waves
2 feet or less. 
.wednesday...east winds 10 knots or less becoming southeast.
waves 2 feet or less. 

$$

fzus61 kcle 171348
glfle 
expires:202610172015;;254972

open lake forecast for lake erie
national weather service cleveland oh
948 am edt sat oct 17 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... 
high pressure 30.50 inches will build into the region today, 
weakening slightly to 30.30 inches by mid to late next week.


lez162-163-172015-
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-
948 am edt sat oct 17 2026

.this afternoon...north winds 15 to 20 knots becoming northwest
and diminishing to 10 knots or less. waves 2 to
4 feet subsiding to 1 to 3 feet. 
.tonight...west winds 5 to 15 knots becoming southwest. waves
1 foot or less. 
.sunday...southwest winds 10 to 15 knots. waves 2 feet or less. 
.sunday night...southwest winds 5 to 10 knots. waves 1 foot or
less. 
.monday...southwest winds 10 knots or less becoming northeast.
waves 1 foot or less. 
.tuesday...northeast winds 10 knots or less. waves 2 feet or
less. 
.wednesday...east winds 10 knots or less. waves 2 feet or less. 

$$

fzus63 kdtx 171349
glfsc 
expires:202610172200;;254982

lake st clair forecast
national weather service detroit/pontiac mi
949 am edt sat oct 17 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...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.


lcz460-172200-
lake st clair-
949 am edt sat oct 17 2026


.rest of today...north winds 15 to 20 knots becoming northwest 5 to
10 knots in the afternoon. sunny. waves 2 feet or less.
.tonight...west winds 5 to 10 knots becoming southwest 10 to 15
knots in the late evening and overnight. clear. waves 2 feet or
less.
.sunday...southwest winds 10 to 15 knots. sunny. waves 1 to 3 feet.
.sunday night...southwest winds 10 to 15 knots diminishing to 5 to
10 knots after midnight. clear. waves 2 feet or less.
.monday...southwest winds 5 to 10 knots in the morning becoming
light and variable. clear. waves 2 feet or less.
.tuesday...light and variable winds. mostly clear. waves nearly
calm.
.wednesday...east winds 5 to 10 knots. clear. waves 2 feet or less.

$$

fzus63 kdtx 171346
glflh 
expires:202610172200;;254923

open lake forecast for lake huron
national weather service detroit/pontiac mi
946 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>464-172200-
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-
946 am edt sat oct 17 2026

.rest of today...north winds 10 to 15 knots becoming northwest
5 to 10 knots early in the afternoon...then becoming west 10 to
15 knots late in the afternoon. waves 4 to 6 feet subsiding to
2 to 4 feet late in the afternoon. waves occasionally around
8 feet. 
.tonight...southwest winds 15 to 20 knots. waves 3 to 5 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 kdtx 171346
glflh 
expires:202610172200;;254922

open lake forecast for lake huron
national weather service detroit/pontiac mi
946 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.


lhz362-363-172200-
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-
946 am edt sat oct 17 2026

.rest of today...west winds 5 to 10 knots becoming southwest
15 to 20 knots. waves 2 to 4 feet subsiding to 1 to 3 feet early
in the afternoon...then building to 3 to 5 feet late in the
afternoon. 
.tonight...southwest winds 15 to 20 knots. waves 5 to 7 feet.
waves occasionally around 10 feet. 
.sunday...southwest winds 20 to 25 knots with 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 5 to 7 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 171346
glflh 
expires:202610172200;;254921

open lake forecast for lake huron
national weather service detroit/pontiac mi
946 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.


lhz361-172200-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
946 am edt sat oct 17 2026

.rest of today...southwest winds 10 to 15 knots becoming west
20 to 25 knots with gusts to around 30 knots. waves 2 feet or
less building to 4 to 6 feet. waves occasionally around 8 feet. 
.tonight...southwest winds 15 to 20 knots. gusts to 30 knots in
the evening. waves 4 to 6 feet. waves occasionally around 8 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 kmkx 171413
glflm 
expires:202610172130;;256217

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
913 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...

strong high pressure around 30.6 inches over the central plains
will slowly move east into the ohio river valley today. strong 
low pressure around 29.2 inches will develop in south central 
canada today, shifting toward and into hudson bay tonight into 
sunday and deepening to around 29.0 inches. 

this will bring southwest gales to far northern portions of lake 
michigan later tonight into sunday night. gale warning is in 
effect during this period 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.


lmz366-565-567-868-172130-
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-
913 am cdt sat oct 17 2026

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

.rest of 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 2 to 4 ft building 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. waves 8 to 12 ft occasionally
to 16 ft. 
.sunday night...southwest winds to 30 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 171413
glflm 
expires:202610172130;;256216

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
913 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...

strong high pressure around 30.6 inches over the central plains
will slowly move east into the ohio river valley today. strong 
low pressure around 29.2 inches will develop in south central 
canada today, shifting toward and into hudson bay tonight into 
sunday and deepening to around 29.0 inches. 

this will bring southwest gales to far northern portions of lake 
michigan later tonight into sunday night. gale warning is in 
effect during this period 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.


lmz261-362-364-563-172130-
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-
913 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...

.rest of today...west winds 10 to 20 kt becoming southwest to 30 
kt. waves 1 to 3 ft building to 5 to 8 ft occasionally to 10 ft. 
.tonight...southwest winds to 30 kt increasing to gales to 40 kt.
waves 6 to 9 ft occasionally to 12 ft building to 8 to 11 ft 
occasionally to 14 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 171413
glflm 
expires:202610172130;;256218

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
913 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...

strong high pressure around 30.6 inches over the central plains
will slowly move east into the ohio river valley today. strong 
low pressure around 29.2 inches will develop in south central 
canada today, shifting toward and into hudson bay tonight into 
sunday and deepening to around 29.0 inches. 

this will bring southwest gales to far northern portions of lake 
michigan later tonight into sunday night. gale warning is in 
effect during this period 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.


lmz080-669-671-673-675-777-779-870-872-874-876-878-172130-
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-
913 am cdt sat oct 17 2026

sheboygan wi to pentwater mi south...

.rest of today...north winds 5 to 10 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 4 to 7 ft occasionally
to 9 ft subsiding to 4 to 6 ft occasionally to 8 ft. 
.tonight...southwest winds to 30 kt. waves 6 to 9 ft occasionally
to 12 ft. 
.sunday...southwest winds to 30 kt becoming south. waves 7 to 10 
ft occasionally to 13 ft building to 8 to 11 ft occasionally to 14
ft. 
.sunday night...southwest winds to 30 kt diminishing to 15 to 25 
kt overnight. waves 8 to 11 ft occasionally to 14 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 171401
glfls 
expires:202610172000;;255359

open lake forecast for lake superior
national weather service marquette mi
1001 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-
1001 am edt sat oct 17 2026

.rest of today...southwest winds 20 to 30 knots diminishing to
15 to 25 knots late. waves 3 to 6 feet occasionally to 8 feet
building to 5 to 8 feet occasionally to 10 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 calm to 2 feet. 

$$

fzus63 kmqt 171401
glfls 
expires:202610172000;;255354

open lake forecast for lake superior
national weather service marquette mi
1001 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-
1001 am edt sat oct 17 2026 /901 am cdt sat oct 17 2026/

...gale warning in effect until 2 pm edt /1 pm cdt/ this
afternoon...
...gale watch in effect from this evening through sunday
afternoon...

.rest of today...southwest gales to 35 knots diminishing to 20 to
30 knots late. waves 6 to 9 feet occasionally to 11 feet building
to 8 to 11 feet occasionally to 14 feet, then subsiding to 5 to
8 feet occasionally to 10 feet. 
.tonight...southwest winds 20 to 30 knots increasing to gales to
35 knots after midnight. waves subsiding to 4 to 7 feet
occasionally to 9 feet, then building to 8 to 11 feet
occasionally to 14 feet. 
.sunday...southwest gales to 35 knots diminishing to 20 to
30 knots late. waves building to 9 to 12 feet occasionally to
15 feet, then subsiding to 5 to 8 feet occasionally to 10 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 171401
glfls 
expires:202610172000;;255355

open lake forecast for lake superior
national weather service marquette mi
1001 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-
1001 am edt sat oct 17 2026

...gale warning in effect until 5 pm edt this afternoon...
...gale watch in effect from this evening through sunday
afternoon...

.rest of 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 8 to 11 feet occasionally to 14 feet
building to 9 to 12 feet occasionally to 15 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 10 to 14 feet
occasionally to 18 feet. 
.sunday...southwest gales to 40 knots. waves 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 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
calm to 2 feet. 

$$

fzus63 kmqt 171401
glfls 
expires:202610172000;;255356

open lake forecast for lake superior
national weather service marquette mi
1001 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-
1001 am edt sat oct 17 2026

...gale warning in effect until 5 pm edt this afternoon...
...gale watch in effect from this evening through sunday
afternoon...

.rest of today...west gales to 35 knots backing southwest in the
afternoon. waves 8 to 11 feet occasionally to 14 feet building to
9 to 12 feet occasionally to 15 feet, then subsiding to 7 to
10 feet occasionally to 13 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 8 to 11 feet
occasionally to 14 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
calm to 2 feet. 

$$

fzus63 kmqt 171401
glfls 
expires:202610172000;;255357

open lake forecast for lake superior
national weather service marquette mi
1001 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-
1001 am edt sat oct 17 2026

.rest of today...west winds 20 to 30 knots becoming southwest
15 to 25 knots late. waves 4 to 8 feet occasionally to 10 feet,
then subsiding to 2 to 4 feet. 
.tonight...southwest winds 15 to 25 knots increasing to 20 to
30 knots after midnight. waves subsiding to 1 to 3 feet, then
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 subsiding to 1 to 3 feet. 
.sunday night...southwest winds 15 to 25 knots becoming west
10 to 20 knots after midnight. waves building to 2 to 4 feet,
then 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
calm to 2 feet. 

$$

fzus63 kmqt 171401
glfls 
expires:202610172000;;255358

open lake forecast for lake superior
national weather service marquette mi
1001 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-
1001 am edt sat oct 17 2026

.rest of today...southwest winds 20 to 30 knots increasing 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 7 to
10 feet occasionally to 13 feet building to 9 to 12 feet
occasionally to 15 feet, then subsiding to 7 to 10 feet
occasionally to 13 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 6 to 9 feet occasionally
to 11 feet. 
.sunday...southwest winds 20 to 30 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...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 1 to 3 feet, then subsiding to calm to 2 feet. 

$$