fzus61 kbuf 172003
glflo 
expires:202610180300;;270639

open lake forecast for lake ontario
national weather service buffalo ny
403 pm 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 ridge averaging 30.2 inches affects the lake through 
this thursday. one embedded high pressure center should wobble 
northeastward from the southern great plains to near newfoundland 
through sunday night. another embedded and reinforcing high pressure 
center should move from near the border of the north-central united 
states and canada to near the canadian maritimes this monday through 
wednesday. a third embedded and reinforcing high pressure center 
should move eastward from the canadian prairies to near the border 
of ontario and quebec this wednesday through thursday.


loz062-180300-
lake ontario open waters from the niagara river to hamlin beach-
403 pm edt sat oct 17 2026

.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 15 to 20 knots. waves 2 to 4 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...southwest winds 5 to 10 knots becoming west. waves
2 feet or less. 
.monday night...west winds 10 knots or less becoming north. waves
1 foot or less. 
.tuesday...northeast winds 5 to 10 knots. waves 2 feet or less. 
.wednesday...northeast winds 5 to 10 knots becoming light and
variable. waves 2 feet or less. 
.thursday...northeast winds 10 knots or less increasing to 10 to
15 knots. waves 2 feet or less. 

$$

fzus61 kbuf 172003
glflo 
expires:202610180300;;270640

open lake forecast for lake ontario
national weather service buffalo ny
403 pm 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 ridge averaging 30.2 inches affects the lake through 
this thursday. one embedded high pressure center should wobble 
northeastward from the southern great plains to near newfoundland 
through sunday night. another embedded and reinforcing high pressure 
center should move from near the border of the north-central united 
states and canada to near the canadian maritimes this monday through 
wednesday. a third embedded and reinforcing high pressure center 
should move eastward from the canadian prairies to near the border 
of ontario and quebec this wednesday through thursday.


loz063>065-180300-
lake ontario open waters from hamlin beach to the saint lawrence
river-
403 pm edt sat oct 17 2026

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

$$

fzus61 kcle 172012
glfle 
expires:202610180215;;271657

open lake forecast for lake erie
national weather service cleveland oh
412 pm 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 30.60 inches will build into the region today, 
weakening slightly to 30.30 inches by mid week.


lez164>168-180215-
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-
412 pm edt sat oct 17 2026

.tonight...west winds 5 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. 
.sunday night...southwest winds 5 to 15 knots. waves 1 to 3 feet.
.monday...southwest winds 10 knots or less becoming west. waves
2 feet or less. 
.monday night...light and variable winds. 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. waves 2 feet or less. 
.thursday...northeast winds 5 to 15 knots. waves 2 feet or less. 

$$

fzus61 kcle 172012
glfle 
expires:202610180215;;271656

open lake forecast for lake erie
national weather service cleveland oh
412 pm 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 30.60 inches will build into the region today, 
weakening slightly to 30.30 inches by mid week.


lez162-163-180215-
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-
412 pm edt sat oct 17 2026

.tonight...west winds 5 to 15 knots becoming southwest. waves
2 feet or less. 
.sunday...southwest winds 10 to 15 knots. waves 1 to 2 feet. 
.sunday night...southwest winds around 10 knots. waves 1 foot or
less. 
.monday...southwest winds 5 to 10 knots becoming light and
variable. waves 1 foot or less. 
.monday night...light and variable winds. waves 1 foot or less. 
.tuesday...northeast winds 10 knots or less. waves 1 foot or
less. 
.wednesday...northeast winds less than 10 knots. waves 1 foot or
less. 
.thursday...north winds 10 knots or less becoming northeast.
waves 1 foot or less. 

$$

fzus61 kcle 172012
glfle 
expires:202610180215;;271658

open lake forecast for lake erie
national weather service cleveland oh
412 pm 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 30.60 inches will build into the region today, 
weakening slightly to 30.30 inches by mid week.


lez061-169-180215-
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-
412 pm edt sat oct 17 2026

.tonight...west winds 5 to 15 knots becoming southwest. waves
1 to 3 feet. 
.sunday...southwest winds 10 to 15 knots. waves 2 to 4 feet. 
.sunday night...southwest winds 10 to 15 knots. waves 1 to
3 feet. 
.monday...southwest winds 10 knots or less becoming west. waves
2 feet or less. 
.monday night...west 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 10 knots or less becoming northeast.
waves 1 foot or less. 
.thursday...northeast winds 10 knots or less. waves 2 feet or
less. 

$$

fzus63 kdtx 171946
glfsc 
expires:202610180400;;270127

lake st clair forecast
national weather service detroit/pontiac mi
346 pm 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 settles across the ohio
valley on sunday. this produces gusty westerly winds through
sunday as deep low pressure tracks across northern ontario. the
high pressure then builds northward into the great lakes early
next week.


lcz460-180400-
lake st clair-
346 pm edt sat oct 17 2026

.tonight...southwest winds 5 to 10 knots increasing to 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. clear. waves 2 feet
or less.
.monday...southwest winds 5 to 10 knots until late afternoon
becoming light and variable. sunny. waves 2 feet or less.
.monday night...light and variable winds becoming north 5 to 10
knots after midnight. clear. waves nearly calm.
.tuesday...northeast winds 5 to 10 knots in the morning becoming
light and variable. mostly sunny in the morning becoming clear.
waves nearly calm.
.wednesday...light and variable winds. clear. waves nearly calm.
.thursday...northeast winds 5 to 10 knots. mostly clear. waves 2
feet or less.

$$

fzus63 kdtx 171946
glflh 
expires:202610180400;;270101

open lake forecast for lake huron
national weather service detroit/pontiac mi
346 pm 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 settles across the ohio
valley on sunday. this produces gusty westerly winds through
sunday as deep low pressure tracks across northern ontario. the
high pressure then builds northward into the great lakes early
next week.


lhz361-180400-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
346 pm edt sat oct 17 2026

.tonight...southwest winds 20 to 25 knots with gusts to around
30 knots decreasing to 15 to 20 knots with gusts to around
30 knots in the late evening and overnight. waves 4 to 6 feet.
waves occasionally around 8 feet. 
.sunday...southwest winds 15 to 20 knots with gusts to around
30 knots decreasing to 10 to 15 knots late in the afternoon.
waves 3 to 5 feet. 
.sunday night...southwest winds 10 to 15 knots increasing to
15 to 20 knots by midnight...then decreasing to 10 to 15 knots
after midnight. waves 2 to 4 feet. 
.monday...southwest winds 10 to 15 knots becoming west 5 to
10 knots in the late morning and afternoon. waves 1 to 3 feet. 
.monday night...light and variable winds. waves 2 feet or less. 
.tuesday...east winds 5 to 10 knots veering to the southeast late
in the evening. waves 2 feet or less. 
.wednesday...south winds 5 to 10 knots early in the morning
becoming light and variable. waves 2 feet or less. 
.thursday...southwest winds 5 to 10 knots early in the morning
becoming light and variable. waves 2 feet or less. 


$$

fzus63 kdtx 171946
glflh 
expires:202610180400;;270102

open lake forecast for lake huron
national weather service detroit/pontiac mi
346 pm 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 settles across the ohio
valley on sunday. this produces gusty westerly winds through
sunday as deep low pressure tracks across northern ontario. the
high pressure then builds northward into the great lakes early
next week.


lhz362-363-180400-
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-
346 pm edt sat oct 17 2026

.tonight...southwest winds 20 to 25 knots with gusts to around
30 knots decreasing to 15 to 20 knots with gusts to around
30 knots after midnight. waves 5 to 7 feet. waves occasionally
around 10 feet. 
.sunday...southwest winds 20 to 25 knots with gusts to 30 knots.
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
30 knots decreasing to 15 to 20 knots after midnight. 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 becoming south 5 to
10 knots early in the afternoon. waves 3 to 5 feet subsiding to
1 to 3 feet in the late morning and afternoon. 
.monday night...light and variable winds becoming north 5 to
10 knots after midnight. waves 2 feet or less. 
.tuesday...northeast winds 5 to 10 knots. waves 2 feet or less. 
.wednesday...south winds 5 to 10 knots. waves 2 feet or less. 
.thursday...southwest winds 5 to 10 knots veering to the west in
the late morning and early afternoon...then veering to the north
. waves 2 feet or less. 


$$

fzus63 kdtx 171946
glflh 
expires:202610180400;;270103

open lake forecast for lake huron
national weather service detroit/pontiac mi
346 pm 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 settles across the ohio
valley on sunday. this produces gusty westerly winds through
sunday as deep low pressure tracks across northern ontario. the
high pressure then builds northward into the great lakes early
next week.


lhz462>464-180400-
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-
346 pm edt sat oct 17 2026

.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 becoming light and
variable. waves 1 to 3 feet. 
.monday night...light and variable winds. waves 2 feet or less. 
.tuesday...northeast winds 5 to 10 knots. waves 2 feet or less. 
.wednesday...southeast winds 5 to 10 knots early in the morning
becoming light and variable...then becoming south 5 to 10 knots
by midnight. waves 2 feet or less. 
.thursday...southwest winds 5 to 10 knots veering to the north .
waves 2 feet or less. 


$$

fzus63 kmkx 171941
glflm 
expires:202610180315;;269903

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
241 pm 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 into early this 
evening, then further to the east tonight into sunday. strong low 
pressure around 29.2 inches will develop in south central canada 
into early this evening, 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. a gale warning is in 
effect during this period for the northern third of lake michigan.
building waves are also expected during this period. 

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


lmz080-669-671-673-675-777-779-870-872-874-876-878-180315-
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-
241 pm cdt sat oct 17 2026

sheboygan wi to pentwater mi south...

.tonight...southwest winds to 30 kt. waves 7 to 10 ft
occasionally to 13 ft. 
.sunday...southwest winds to 30 kt. waves 7 to 10 ft occasionally
to 13 ft building to 10 to 14 ft occasionally to 18 ft. 
.sunday night...southwest winds to 30 kt diminishing to 10 to
20 kt. waves 8 to 12 ft occasionally to 16 ft subsiding to 4 to
7 ft occasionally to 9 ft. 
.monday...southwest winds 10 to 20 kt becoming south 10 to 15 kt.
waves 3 to 5 ft subsiding to 1 to 3 ft. 
.monday night...south winds 5 to 10 kt becoming southeast. waves
1 to 2 ft. 
.tuesday...southeast winds 5 to 10 kt. waves nearly calm. 
.tuesday night...southeast winds 5 to 10 kt. waves 1 to 2 ft. 
.wednesday...south winds 10 to 15 kt. waves 1 to 2 ft. 
.thursday...southwest winds 5 to 10 kt becoming south 10 to
15 kt. waves 1 ft or less.  

$$

fzus63 kmkx 171941
glflm 
expires:202610180315;;269902

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
241 pm 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 into early this 
evening, then further to the east tonight into sunday. strong low 
pressure around 29.2 inches will develop in south central canada 
into early this evening, 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. a gale warning is in 
effect during this period for the northern third of lake michigan.
building waves are also expected during this period. 

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


lmz366-565-567-868-180315-
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-
241 pm cdt sat oct 17 2026

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

.tonight...southwest winds to 30 kt. waves 7 to 10 ft
occasionally to 13 ft. 
.sunday...southwest winds to 30 kt. waves 10 to 14 ft
occasionally to 18 ft. 
.sunday night...southwest winds to 30 kt diminishing to 10 to
20 kt. 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 5 to 10 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. 
.tuesday night...south 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 2 ft. 
.thursday...west winds 5 to 10 kt veering to northeast 10 to
15 kt. waves 1 ft or less.  

$$

fzus63 kmkx 171941
glflm 
expires:202610180315;;269901

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
241 pm 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 into early this 
evening, then further to the east tonight into sunday. strong low 
pressure around 29.2 inches will develop in south central canada 
into early this evening, 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. a gale warning is in 
effect during this period for the northern third of lake michigan.
building waves are also expected during this period. 

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


lmz261-362-364-563-180315-
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-
241 pm cdt sat oct 17 2026

sturgeon bay wi to point betsie mi north...

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

.tonight...southwest winds to 30 kt increasing to gales to 35 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 30 kt.
waves 8 to 12 ft occasionally to 16 ft subsiding to 7 to 10 ft
occasionally to 13 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...southwest winds 5 to 10 kt backing to southeast.
waves 1 to 2 ft. 
.tuesday...southeast winds 5 to 10 kt. waves 1 ft or less. 
.tuesday night...southeast winds 5 to 10 kt becoming south. waves
1 ft or less. 
.wednesday...south winds 10 to 15 kt becoming southwest 10 to
20 kt. waves 1 to 2 ft. 
.thursday...northwest winds 5 to 10 kt becoming north. waves 1 to
2 ft.  

$$

fzus63 kmqt 172104 aaa
glfls 
expires:202610180515;;273225

open lake forecast for lake superior...updated
national weather service marquette mi
504 pm 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. 




lsz162-180515-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
504 pm edt sat oct 17 2026 /404 pm cdt sat oct 17 2026/

...gale warning in effect from 11 pm edt /10 pm cdt/ this evening
through sunday afternoon...

.late this afternoon...southwest winds 20 to 30 knots. waves 7 to
10 feet occasionally to 13 feet 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 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...northeast 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. waves calm to 2 feet. 
.tuesday night...east winds 5 to 15 knots veering south after
midnight. waves calm to 2 feet. 
.wednesday...southwest winds 5 to 15 knots backing northeast.
waves calm to 2 feet. 
.thursday...northeast winds 5 to 15 knots veering east. waves
calm to 2 feet. 

$$

fzus63 kmqt 172104 aaa
glfls 
expires:202610180515;;273226

open lake forecast for lake superior...updated
national weather service marquette mi
504 pm 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. 




lsz263-180515-
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-
504 pm edt sat oct 17 2026

...gale warning in effect from 11 pm edt this evening through
sunday afternoon...

.late this afternoon...southwest winds 20 to 30 knots. waves 8 to
11 feet occasionally to 14 feet subsiding to 6 to 9 feet
occasionally to 11 feet. 
.tonight...southwest winds 20 to 30 knots increasing to gales to
35 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 15 to 25 knots becoming west
10 to 20 knots after midnight, then diminishing to 5 to 15 knots
late. waves subsiding to 1 to 3 feet. 
.monday...north winds less than 10 knots becoming northeast 5 to
15 knots 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 backing east by mid
afternoon. waves calm to 2 feet. 
.tuesday night...south winds 10 to 20 knots. waves calm to
2 feet. 
.wednesday...southwest winds 10 to 20 knots diminishing to 5 to
15 knots. waves calm to 2 feet. 
.thursday...east winds 5 to 15 knots veering southeast. waves
calm to 2 feet. 

$$

fzus63 kmqt 172104 aaa
glfls 
expires:202610180515;;273227

open lake forecast for lake superior...updated
national weather service marquette mi
504 pm 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. 




lsz264-180515-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
504 pm edt sat oct 17 2026

...gale warning in effect from 11 pm edt this evening through
sunday afternoon...

.late this afternoon...southwest winds 20 to 30 knots. waves 8 to
11 feet occasionally to 14 feet subsiding to 7 to 10 feet
occasionally to 13 feet. 
.tonight...southwest winds 20 to 30 knots increasing to gales to
35 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 15 to 25 knots diminishing to 5 to
15 knots late. waves subsiding to 2 to 4 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...southeast winds 5 to 15 knots. waves calm to 2 feet. 
.tuesday night...south winds 5 to 15 knots. waves calm to 2 feet.
.wednesday...southwest winds 5 to 15 knots veering north. waves
calm to 2 feet. 
.thursday...east winds 5 to 15 knots veering southeast. waves
calm to 2 feet. 

$$

fzus63 kmqt 172104 aaa
glfls 
expires:202610180515;;273228

open lake forecast for lake superior...updated
national weather service marquette mi
504 pm 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. 




lsz265-180515-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
504 pm edt sat oct 17 2026

.late this afternoon...southwest winds 15 to 25 knots. waves 3 to
5 feet occasionally to 7 feet subsiding to 2 to 4 feet. 
.tonight...southwest winds 20 to 30 knots. 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 10 to
20 knots late. waves subsiding to 1 to 3 feet. 
.sunday night...southwest winds 15 to 25 knots veering west after
midnight, then diminishing to 10 to 20 knots late. 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. waves calm to 2 feet. 
.tuesday night...south winds 10 to 20 knots. waves calm to
2 feet. 
.wednesday...south winds 10 to 20 knots veering west. waves calm
to 2 feet. 
.thursday...northeast winds 5 to 15 knots veering south. waves
calm to 2 feet. 

$$

fzus63 kmqt 172104 aaa
glfls 
expires:202610180515;;273229

open lake forecast for lake superior...updated
national weather service marquette mi
504 pm 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. 




lsz266-180515-
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-
504 pm edt sat oct 17 2026

.late this afternoon...southwest winds 20 to 30 knots. waves 8 to
11 feet occasionally to 14 feet 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 15 to 25 knots becoming west
10 to 20 knots late. 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. waves calm to 2 feet. 
.tuesday night...south winds 10 to 20 knots increasing to 15 to
25 knots after midnight. waves calm to 2 feet. 
.wednesday...south winds 10 to 20 knots becoming southwest 5 to
15 knots. waves building to 1 to 3 feet, then subsiding to calm
to 2 feet. 
.thursday...northeast winds 5 to 15 knots veering south. waves
calm to 2 feet. 

$$

fzus63 kmqt 172104 aaa
glfls 
expires:202610180515;;273230

open lake forecast for lake superior...updated
national weather service marquette mi
504 pm 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. 




lsz267-180515-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
504 pm edt sat oct 17 2026

.late this afternoon...southwest winds 20 to 30 knots. waves 4 to
7 feet occasionally to 9 feet subsiding to 3 to 6 feet
occasionally to 8 feet. 
.tonight...southwest winds 20 to 30 knots. 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 late. 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. 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 10 to 20 knots diminishing to 5 to
15 knots by mid afternoon. waves calm to 2 feet. 
.tuesday night...south winds 10 to 20 knots. waves calm to
2 feet. 
.wednesday...south winds 10 to 20 knots veering southwest. waves
calm to 2 feet. 
.thursday...northeast winds 5 to 15 knots veering southeast.
waves calm to 2 feet. 

$$