fzus61 kbuf 130202
glflo 
expires:202609130900;;355810

open lake forecast for lake ontario
national weather service buffalo ny
1002 pm edt sat sep 12 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 high pressure ridge averaging 30.0 inches continues 
to exit eastward and allows a wavy warm front to sweep northeastward 
across the lake this evening. a cold front then sweeps eastward 
across the lake on sunday. behind the cold front, a ridge averaging 
30.2 inches will slide eastward across the lower great lakes through 
monday. the ridge should exit toward new england on tuesday and 
allow a warm front to sweep northeastward across the lake. a cold 
front should sweep eastward across the lake on wednesday and be 
followed by a ridge averaging 30.1 inches and building from the 
upper midwest through thursday.


loz062-130900-
lake ontario open waters from the niagara river to hamlin beach-
1002 pm edt sat sep 12 2026

.overnight...south winds 10 to 15 knots becoming southwest.
waves 1 to 3 feet. 
.sunday...west winds 5 to 15 knots. waves 1 to 2 feet. 
.sunday night...northwest winds 15 to 20 knots. a chance of
showers in the evening. waves 1 to 3 feet building to 3 to
5 feet, then subsiding to 2 to 4 feet. 
.monday...north winds 15 to 20 knots becoming west and
diminishing to less than 10 knots in the afternoon. waves 2 to
4 feet subsiding to 1 foot or less. 
.monday night...west winds 10 knots or less becoming south. waves
1 foot or less. 
.tuesday...south winds 5 to 15 knots becoming southwest. a chance
of showers tuesday night. waves 2 feet or less. 
.wednesday...west winds 10 knots or less becoming east. a chance
of showers. waves 1 foot or less. 
.thursday...east winds 5 to 15 knots becoming north. showers
likely during the day, then a chance of showers thursday night.
waves 2 feet or less. 

$$

fzus61 kbuf 130202
glflo 
expires:202609130900;;355811

open lake forecast for lake ontario
national weather service buffalo ny
1002 pm edt sat sep 12 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 high pressure ridge averaging 30.0 inches continues 
to exit eastward and allows a wavy warm front to sweep northeastward 
across the lake this evening. a cold front then sweeps eastward 
across the lake on sunday. behind the cold front, a ridge averaging 
30.2 inches will slide eastward across the lower great lakes through 
monday. the ridge should exit toward new england on tuesday and 
allow a warm front to sweep northeastward across the lake. a cold 
front should sweep eastward across the lake on wednesday and be 
followed by a ridge averaging 30.1 inches and building from the 
upper midwest through thursday.


loz063>065-130900-
lake ontario open waters from hamlin beach to the saint lawrence
river-
1002 pm edt sat sep 12 2026

.overnight...south winds 15 to 20 knots becoming southwest.
showers likely with a chance of thunderstorms, then a chance of
showers late. waves 2 to 4 feet. 
.sunday...southwest winds 10 to 15 knots becoming west. a chance
of showers early. a chance of showers late. waves 1 to 3 feet. 
.sunday night...west winds 15 to 20 knots becoming northwest. a
chance of showers. waves 2 to 4 feet building to 3 to 5 feet. 
.monday...northwest winds 15 to 20 knots diminishing to 5 to
15 knots. waves 3 to 5 feet subsiding to 1 to 3 feet. 
.monday night...northwest winds 5 to 10 knots becoming south.
waves 1 foot or less. 
.tuesday...south winds 15 to 25 knots. a chance of showers
tuesday night. waves 1 to 3 feet building to 2 to 4 feet. 
.wednesday...southwest winds 15 to 20 knots becoming east and
diminishing to 10 knots or less. a chance of showers. waves 1 to
3 feet subsiding to 1 foot or less. 
.thursday...southeast winds 5 to 15 knots becoming north 15 to
20 knots. showers likely. waves 2 feet or less. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 130156
glfle 
expires:202609130815;;355626

open lake forecast for lake erie
national weather service cleveland oh
956 pm edt sat sep 12 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...
low pressure of 29.80 inches extends across lower michigan and
will move south across lake erie on sunday. a secondary stronger 
cold front will arrive late sunday ahead of high pressure of 30.30
inches that will build in for monday. pressure falls to 30.20 
inches tuesday night as a warm front sets up over lake erie for 
midweek.


lez162-163-130815-
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-
956 pm edt sat sep 12 2026

.overnight...southwest winds around 10 knots becoming west.
waves 1 to 2 feet. 
.sunday...west winds 5 to 15 knots becoming northwest. waves
2 feet or less. 
.sunday night...northwest winds 15 to 20 knots becoming north.
waves 1 to 3 feet building to 2 to 4 feet. 
.monday...north winds 5 to 15 knots becoming east less than
10 knots. waves 2 to 4 feet subsiding to 1 foot or less. 
.monday night...southeast winds 5 to 15 knots becoming south
15 to 20 knots. waves 1 to 3 feet. 
.tuesday...south winds 15 to 20 knots becoming west 10 to
15 knots. showers likely with a chance of thunderstorms tuesday
night. waves 1 to 3 feet subsiding to 1 foot or less. 
.wednesday...north winds 5 to 10 knots becoming east. a chance of
showers during the day, then showers likely wednesday night.
waves 1 foot or less. 
.thursday...southwest winds 10 to 15 knots becoming northeast
15 to 20 knots. showers likely during the day, then a chance of
showers thursday night. waves 1 to 3 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 130156
glfle 
expires:202609130815;;355627

open lake forecast for lake erie
national weather service cleveland oh
956 pm edt sat sep 12 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...
low pressure of 29.80 inches extends across lower michigan and
will move south across lake erie on sunday. a secondary stronger 
cold front will arrive late sunday ahead of high pressure of 30.30
inches that will build in for monday. pressure falls to 30.20 
inches tuesday night as a warm front sets up over lake erie for 
midweek.


lez164>168-130815-
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-
956 pm edt sat sep 12 2026

.overnight...southwest winds 10 to 15 knots. isolated
showers and thunderstorms late. waves 1 to 3 feet building to
2 to 4 feet. 
.sunday...west winds 5 to 15 knots. isolated showers and
thunderstorms early. a slight chance of showers and thunderstorms
in the afternoon. waves 1 to 3 feet. 
.sunday night...northwest winds 15 to 25 knots becoming north.
waves 1 to 3 feet building to 3 to 6 feet. 
.monday...north winds 15 to 20 knots becoming northeast 5 to
15 knots. waves 3 to 5 feet subsiding to 1 to 3 feet. 
.monday night...east winds 10 knots or less becoming southeast
and increasing to 15 to 20 knots overnight. waves 1 to 3 feet. 
.tuesday...south winds 15 to 20 knots becoming southwest 10 to
15 knots. showers likely with a chance of thunderstorms tuesday
night. waves 2 to 4 feet subsiding to 1 to 3 feet. 
.wednesday...west winds 5 to 10 knots becoming southeast. a
chance of showers. waves 2 feet or less. 
.thursday...southwest winds 10 to 15 knots becoming northeast
15 to 20 knots. showers likely during the day, then a chance of
showers thursday night. waves 1 to 3 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 130156
glfle 
expires:202609130815;;355628

open lake forecast for lake erie
national weather service cleveland oh
956 pm edt sat sep 12 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...
low pressure of 29.80 inches extends across lower michigan and
will move south across lake erie on sunday. a secondary stronger 
cold front will arrive late sunday ahead of high pressure of 30.30
inches that will build in for monday. pressure falls to 30.20 
inches tuesday night as a warm front sets up over lake erie for 
midweek.


lez061-169-130815-
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-
956 pm edt sat sep 12 2026

.overnight...south winds 10 to 15 knots becoming southwest.
isolated showers and thunderstorms late. waves 1 to 3 feet. 
.sunday...southwest winds 5 to 15 knots becoming west. isolated
showers and thunderstorms early. a slight chance of showers and
thunderstorms late. waves 1 to 3 feet. 
.sunday night...northwest winds 10 to 15 knots becoming north
15 to 20 knots. a chance of showers in the evening. waves 2 to
3 feet building to 3 to 5 feet, then subsiding to 2 to 4 feet. 
.monday...north winds 5 to 15 knots becoming northeast less than
10 knots. waves 2 to 4 feet subsiding to 1 foot or less. 
.monday night...east winds 10 knots or less becoming southeast
10 to 15 knots. waves 2 feet or less. 
.tuesday...south winds 15 to 20 knots becoming southwest 10 to
15 knots. a chance of showers tuesday night. waves 1 to 3 feet. 
.wednesday...southwest winds 10 knots or less becoming east. a
chance of showers. waves 2 feet or less. 
.thursday...southwest winds 5 to 15 knots becoming northeast. a
chance of showers. waves 2 feet or less. 

winds and waves higher in and near thunderstorms.

$$

fzus63 kdtx 130141
glflh 
expires:202609130945;;355455

open lake forecast for lake huron
national weather service detroit/pontiac mi
941 pm edt sat sep 12 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...low pressure, 29.30 inches, will continue to push
eastward over northern ontario as it drags a cold front across
the central great lakes through sunday. northwesterly flow
increases on sunday behind the front.


lhz361>363-130945-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
lake huron from presque isle light to sturgeon point mi beyond
5nm off shore-
lake huron from sturgeon point to alabaster mi beyond 5nm off
shore-
941 pm edt sat sep 12 2026

.rest of tonight...west winds 10 to 15 knots becoming 5 to
10 knots early in the morning. waves 1 to 3 feet. 
.sunday...northwest winds 5 to 10 knots becoming west 15 to
20 knots with gusts to around 30 knots. waves 1 to 3 feet
building to 4 to 6 feet late in the afternoon. waves occasionally
around 8 feet. 
.sunday night...northwest winds 20 to 25 knots with gusts to
around 30 knots decreasing to 10 to 15 knots. waves 5 to 7 feet.
waves occasionally around 10 feet. 
.monday...northwest winds 10 to 15 knots early in the morning
becoming light and variable. waves 3 to 5 feet subsiding to 1 to
3 feet in the late morning and afternoon. 
.monday night...southeast winds 5 to 10 knots increasing to 15 to
20 knots with gusts to around 30 knots by midnight...then
becoming south 20 to 25 knots with gusts to 35 knot gales after
midnight. showers after midnight. waves 1 to 3 feet building to
6 to 9 feet. waves occasionally around 12 feet. 
.tuesday...south winds to 30 knots with gusts to 40 knot gales
decreasing to 20 to 25 knots with gusts to 40 knot gales late in
the morning...then becoming southwest 10 to 15 knots late in the
afternoon. showers in the morning. rain showers likely late in
the morning. waves 8 to 12 feet subsiding to 2 to 4 feet late in
the evening. waves occasionally around 15 feet. 
.wednesday...north winds 5 to 10 knots early in the morning
becoming light and variable...then becoming northeast 5 to
10 knots by midnight. a chance of showers by midnight. waves
2 feet or less. 
.thursday...northeast winds 5 to 10 knots. a chance of showers
until afternoon. waves 2 feet or less. 


$$

fzus63 kdtx 130141
glflh 
expires:202609130945;;355456

open lake forecast for lake huron
national weather service detroit/pontiac mi
941 pm edt sat sep 12 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...low pressure, 29.30 inches, will continue to push
eastward over northern ontario as it drags a cold front across
the central great lakes through sunday. northwesterly flow
increases on sunday behind the front.


lhz462>464-130945-
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-
941 pm edt sat sep 12 2026

.rest of tonight...southwest winds 5 to 10 knots. waves 1 to
3 feet. 
.sunday...north winds 5 to 10 knots backing to the northwest
early in the afternoon...then becoming west 10 to 15 knots late
in the afternoon. a chance of showers in the afternoon. waves
1 to 3 feet. 
.sunday night...northwest winds 15 to 20 knots. waves 5 to
7 feet. waves occasionally around 10 feet. 
.monday...northwest winds 10 to 15 knots becoming light and
variable. waves 3 to 5 feet subsiding to 1 to 3 feet early in the
afternoon. 
.monday night...light and variable winds becoming southeast 10 to
15 knots by midnight...then becoming south 15 to 20 knots with
gusts to around 30 knots after midnight. waves 1 to 3 feet
building to 4 to 6 feet after midnight. waves occasionally around
8 feet. 
.tuesday...south winds 20 to 25 knots with gusts to 35 knot gales
becoming southwest 10 to 15 knots late in the afternoon. showers
likely...then a chance of showers late in the afternoon. waves
5 to 7 feet subsiding to 1 to 3 feet late in the evening. waves
occasionally around 10 feet. 
.wednesday...north winds 5 to 10 knots veering to the northeast
by midnight. a chance of showers early in the evening. rain
showers likely by midnight. waves 2 feet or less. 
.thursday...east winds 5 to 10 knots becoming north 10 to
15 knots. showers likely until afternoon. waves 1 to 3 feet. 


$$

fzus63 kdtx 130140
glfsc 
expires:202609130945;;355454

lake st clair forecast
national weather service detroit/pontiac mi
940 pm edt sat sep 12 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...low pressure, 29.30 inches, will continue to push
eastward over northern ontario as it drags a cold front across
the central great lakes through sunday. northwesterly flow
increases on sunday behind the front.


lcz460-130945-
lake st clair-
940 pm edt sat sep 12 2026

.rest of tonight...southwest winds 5 to 10 knots veering to the west
early in the morning. partly cloudy. waves 2 feet or less.
.sunday...north winds 5 to 10 knots becoming northwest 15 to 20
knots late in the afternoon. mostly sunny. waves 2 feet or less.
.sunday night...northwest winds 20 to 25 knots becoming north 15 to
20 knots after midnight. mostly cloudy early in the evening then
clearing. waves 1 to 3 feet.
.monday...north winds 10 to 15 knots diminishing to 5 to 10 knots in
the late morning and early afternoon...then becoming light and
variable early in the afternoon. sunny. waves 2 feet or less.
.monday night...southeast winds 5 to 10 knots becoming south 15 to
20 knots. partly cloudy. waves 2 feet or less.
.tuesday...south winds 20 to 25 knots becoming southwest 10 to 15
knots. partly cloudy. a chance of light showers. showers likely in
the evening. waves 1 to 3 feet.
.wednesday...northeast winds 5 to 10 knots. mostly cloudy. showers
likely. waves 2 feet or less.
.thursday...north winds 10 to 15 knots. mostly cloudy. showers
likely. waves 2 feet or less.

$$

fzus63 kmkx 130242
glflm 
expires:202609130915;;357218

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
942 pm cdt sat sep 12 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...

light to moderate northwest winds will prevail tonight and sunday
with occasional gusts to 25 knots over the lake sunday afternoon.
winds ease sunday night as high pressure around 30.3 inches moves
across the lake into monday morning. 

winds will then increase and veer to south-southwesterly monday 
afternoon into tuesday as low pressure around 29.4 inches 
develops over manitoba. gales appear likely monday night into the
first half of tuesday. a gale watch has been issued for the
northern two thirds of the open waters of lake michigan. 

periods of showers and thunderstorms will accompany the 
developing low from as early as monday evening into tuesday. winds
will trend northerly and weaken behind a cold front tuesday night
into wednesday.


lmz080-777-779-878-130915-
lake michigan from michigan city in to st. joseph mi 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 st. joseph to south haven mi 5 nm offshore to
mid lake-
942 pm cdt sat sep 12 2026

winthrop harbor il to south haven mi south...

.rest of tonight...northwest winds 10 to 15 kt becoming north
10 to 20 kt. waves 1 to 2 ft building to 2 to 4 ft. 
.sunday...north winds 10 to 15 kt increasing to 15 to 25 kt, then
diminishing to 10 to 20 kt late. slight chance of showers in the
afternoon. waves 3 to 5 ft building to 4 to 6 ft occasionally to
8 ft. 
.sunday night...northwest winds 10 to 20 kt becoming north 10 to
15 kt, then becoming northeast 5 to 10 kt late. waves 3 to 5 ft
subsiding to 2 to 4 ft. 
.monday...east winds 10 to 20 kt becoming southeast. waves 1 to
3 ft. 
.monday night...southeast winds to 30 kt becoming south. waves
6 to 9 ft occasionally to 12 ft. 
.tuesday...south winds to 30 kt becoming southwest 10 to 20 kt in
the afternoon. chance of showers in the morning, then showers
likely with a chance of thunderstorms in the afternoon. waves
6 to 9 ft occasionally to 12 ft subsiding to 4 to 6 ft
occasionally to 8 ft. 
.tuesday night...northwest winds 5 to 10 kt becoming north 10 to
15 kt. showers likely with a chance of thunderstorms. waves 1 to
3 ft. 
.wednesday...northeast winds 10 to 15 kt. showers likely. waves
2 to 4 ft. 
.thursday...north winds 10 to 20 kt. showers likely. waves 3 to
5 ft.  

$$

fzus63 kmkx 130242
glflm 
expires:202609130915;;357216

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
942 pm cdt sat sep 12 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...

light to moderate northwest winds will prevail tonight and sunday
with occasional gusts to 25 knots over the lake sunday afternoon.
winds ease sunday night as high pressure around 30.3 inches moves
across the lake into monday morning. 

winds will then increase and veer to south-southwesterly monday 
afternoon into tuesday as low pressure around 29.4 inches 
develops over manitoba. gales appear likely monday night into the
first half of tuesday. a gale watch has been issued for the
northern two thirds of the open waters of lake michigan. 

periods of showers and thunderstorms will accompany the 
developing low from as early as monday evening into tuesday. winds
will trend northerly and weaken behind a cold front tuesday night
into wednesday.


lmz261-362-364-366-563-565-567-868-130915-
lake michigan from seul choix point to rock island passage 5 nm
offshore to mid lake-
lake michigan south of a line from seul choix point to the
mackinac bridge and north of a line from charlevoix mi to south
fox island 5 nm offshore-
lake michigan from charlevoix to point betsie mi 5 nm offshore to
mid lake-
lake michigan from point betsie to manistee mi 5 nm offshore to
mid lake-
lake michigan from rock island passage to sturgeon bay wi-
lake michigan from sturgeon bay to two rivers wi 5 nm offshore to
mid lake-
lake michigan from two rivers to sheboygan wi 5 nm offshore to
mid lake-
lake michigan from pentwater to manistee mi 5 nm offshore to mid
lake-
942 pm cdt sat sep 12 2026

sheboygan wi to pentwater mi north...

...gale watch in effect from monday evening through tuesday
afternoon...

.rest of tonight...northwest winds 15 to 25 kt diminishing to
10 to 20 kt. waves 2 to 4 ft. 
.sunday...northwest winds 10 to 20 kt increasing to 30 kt. waves
2 to 4 ft building to 3 to 5 ft. 
.sunday night...northwest winds to 30 kt becoming north 10 to
15 kt. waves 3 to 5 ft subsiding to 2 to 4 ft. 
.monday...northeast winds 10 to 15 kt veering to south 15 to
25 kt in the afternoon. waves 1 to 3 ft building to 3 to 5 ft. 
.monday night...south gales to 40 kt. chance of showers in the
evening, then showers overnight. waves 7 to 10 ft occasionally to
13 ft building to 10 to 14 ft occasionally to 18 ft. 
.tuesday...southwest gales to 40 kt diminishing to 30 kt in the
afternoon. showers in the morning, then chance of showers in the
afternoon. waves 10 to 14 ft occasionally to 18 ft subsiding to
7 to 10 ft occasionally to 13 ft. 
.tuesday night...northwest winds 15 to 25 kt becoming north 10 to
20 kt. waves 4 to 6 ft occasionally to 8 ft subsiding to 1 to
3 ft. 
.wednesday...northeast winds 10 to 20 kt diminishing to 10 to
15 kt. waves 1 to 3 ft. 
.thursday...northeast winds 10 to 20 kt becoming north 15 to
25 kt. chance of showers. waves 1 to 3 ft.  

$$

fzus63 kmkx 130242
glflm 
expires:202609130915;;357217

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
942 pm cdt sat sep 12 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...

light to moderate northwest winds will prevail tonight and sunday
with occasional gusts to 25 knots over the lake sunday afternoon.
winds ease sunday night as high pressure around 30.3 inches moves
across the lake into monday morning. 

winds will then increase and veer to south-southwesterly monday 
afternoon into tuesday as low pressure around 29.4 inches 
develops over manitoba. gales appear likely monday night into the
first half of tuesday. a gale watch has been issued for the
northern two thirds of the open waters of lake michigan. 

periods of showers and thunderstorms will accompany the 
developing low from as early as monday evening into tuesday. winds
will trend northerly and weaken behind a cold front tuesday night
into wednesday.


lmz669-671-673-675-870-872-874-876-130915-
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 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-
942 pm cdt sat sep 12 2026

sheboygan wi to pentwater mi south to winthrop harbor il to south
haven mi...

...gale watch in effect from monday evening through tuesday
afternoon...

.rest of tonight...northwest winds 15 to 25 kt becoming north
10 to 20 kt. waves 2 to 4 ft. 
.sunday...north winds 10 to 20 kt becoming northwest 15 to 25 kt.
slight chance of showers in the afternoon. waves 3 to 5 ft
building to 4 to 6 ft occasionally to 8 ft. 
.sunday night...northwest winds 10 to 20 kt veering to northeast
10 to 15 kt. waves 4 to 6 ft occasionally to 8 ft subsiding to
3 to 5 ft. 
.monday...east winds 10 to 20 kt becoming southeast 15 to 25 kt.
waves 1 to 3 ft building to 3 to 5 ft. 
.monday night...southeast gales to 40 kt becoming south. showers
likely overnight. waves 7 to 10 ft occasionally to 13 ft building
to 10 to 14 ft occasionally to 18 ft. 
.tuesday...southwest gales to 35 kt diminishing to 30 kt. showers
likely. waves 10 to 14 ft occasionally to 18 ft subsiding to 6 to
9 ft occasionally to 12 ft. 
.tuesday night...northwest winds 10 to 15 kt becoming north 10 to
20 kt. chance of showers. waves 3 to 5 ft subsiding to 2 to 4 ft.
.wednesday...northeast winds 10 to 20 kt diminishing to 10 to
15 kt. chance of showers. waves 2 to 4 ft. 
.thursday...northeast winds 10 to 20 kt increasing to 15 to
25 kt. waves 3 to 5 ft.  

$$

fzus63 kmqt 130201
glfls 
expires:202609130800;;355768

open lake forecast for lake superior
national weather service marquette mi
1001 pm edt sat sep 12 2026

for waters beyond 5 nautical miles of shore on lake superior.

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

.synopsis...

a 29.7 inch trough continues to shift east of lake superior tonight. 
30.0 inch ridging builds back in from the northern plains on sunday 
and strengthens to 30.2 inches through monday. a low averaging 29.4 
inches crosses northern ontario on tuesday, with a strong 30.4 inch 
high building over the lake on wednesday.




lsz265-130800-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
1001 pm edt sat sep 12 2026

.rest of tonight...west winds 20 to 30 knots veering northwest
after midnight. waves 3 to 5 feet occasionally to 7 feet. 
.sunday...northwest winds 20 to 30 knots increasing to 30 knots
with a few gale force gusts to 35 knots possible in the
afternoon. a slight chance of showers through early afternoon.
waves subsiding to 2 to 4 feet, then building to 3 to 6 feet
occasionally to 8 feet. 
.sunday night...northwest winds 15 to 25 knots diminishing to
10 to 20 knots after midnight. waves subsiding to calm to 2 feet.
.monday...south winds 10 to 20 knots becoming southeast 20 to
30 knots by mid afternoon. a slight chance of showers by mid
afternoon. waves building to 2 to 4 feet. 
.monday night...south gales to 40 knots. showers and a slight
chance of thunderstorms. waves building to 6 to 9 feet
occasionally to 11 feet, then subsiding to 4 to 7 feet
occasionally to 9 feet. 
.tuesday...southwest gales to 35 knots becoming west gales to
40 knots by mid afternoon. waves subsiding to 3 to 6 feet
occasionally to 8 feet, then building to 4 to 7 feet occasionally
to 9 feet. 
.tuesday night...northwest gales to 35 knots diminishing to 10 to
20 knots after midnight. waves subsiding to calm to 2 feet. 
.wednesday...east winds 5 to 15 knots becoming southeast 10 to
20 knots. a chance of showers. waves calm to 2 feet. 
.thursday...west winds 10 to 20 knots veering north. waves calm
to 2 feet. 

$$

fzus63 kmqt 130201
glfls 
expires:202609130800;;355769

open lake forecast for lake superior
national weather service marquette mi
1001 pm edt sat sep 12 2026

for waters beyond 5 nautical miles of shore on lake superior.

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

.synopsis...

a 29.7 inch trough continues to shift east of lake superior tonight. 
30.0 inch ridging builds back in from the northern plains on sunday 
and strengthens to 30.2 inches through monday. a low averaging 29.4 
inches crosses northern ontario on tuesday, with a strong 30.4 inch 
high building over the lake on wednesday.




lsz266-130800-
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 pm edt sat sep 12 2026

.rest of tonight...west winds 20 to 30 knots veering northwest
after midnight, then diminishing to 15 to 25 knots late. waves
3 to 6 feet occasionally to 8 feet. 
.sunday...northwest winds 15 to 25 knots increasing to 30 knots
with a few gale force gusts to 35 knots possible in the
afternoon. a chance of showers. waves building to 4 to 7 feet
occasionally to 9 feet. 
.sunday night...northwest winds 20 to 30 knots diminishing to
5 to 15 knots. waves subsiding to calm to 2 feet. 
.monday...south winds 5 to 15 knots becoming southeast 20 to
30 knots by mid afternoon. waves building to 2 to 4 feet. 
.monday night...south gales to 40 knots. showers. a slight chance
of thunderstorms after midnight. waves building to 7 to 10 feet
occasionally to 13 feet. 
.tuesday...southwest gales to 35 knots becoming west gales to
40 knots by mid afternoon. waves subsiding to 5 to 8 feet
occasionally to 10 feet, then building to 6 to 9 feet
occasionally to 11 feet. 
.tuesday night...northwest gales to 35 knots becoming north 10 to
20 knots after midnight. waves subsiding to 1 to 3 feet. 
.wednesday...north winds 5 to 15 knots veering east. waves
subsiding to calm to 2 feet. 
.thursday...northwest winds 10 to 20 knots veering north. waves
calm to 2 feet. 

$$

fzus63 kmqt 130201
glfls 
expires:202609130800;;355770

open lake forecast for lake superior
national weather service marquette mi
1001 pm edt sat sep 12 2026

for waters beyond 5 nautical miles of shore on lake superior.

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

.synopsis...

a 29.7 inch trough continues to shift east of lake superior tonight. 
30.0 inch ridging builds back in from the northern plains on sunday 
and strengthens to 30.2 inches through monday. a low averaging 29.4 
inches crosses northern ontario on tuesday, with a strong 30.4 inch 
high building over the lake on wednesday.




lsz267-130800-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
1001 pm edt sat sep 12 2026

.rest of tonight...west winds 15 to 25 knots becoming northwest
20 to 30 knots after midnight, then diminishing to 15 to 25 knots
late. waves 3 to 6 feet occasionally to 8 feet. 
.sunday...northwest winds 15 to 25 knots increasing to 30 knots
with a few gale force gusts to 35 knots possible. a chance of
showers. a slight chance of thunderstorms by mid afternoon. waves
subsiding to 3 to 5 feet occasionally to 7 feet, then building to
5 to 8 feet occasionally to 10 feet. 
.sunday night...northwest winds 20 to 30 knots diminishing to
10 to 20 knots. waves subsiding to 1 to 3 feet. 
.monday...northwest winds 5 to 15 knots backing southeast by mid
afternoon. waves subsiding to calm to 2 feet. 
.monday night...south winds 20 to 30 knots increasing to gales to
40 knots after midnight. showers. waves building to 6 to 9 feet
occasionally to 11 feet. 
.tuesday...southwest gales to 35 knots becoming west 20 to
30 knots by mid afternoon. a chance of showers through early
afternoon. waves subsiding to 3 to 6 feet occasionally to 8 feet,
then building to 4 to 7 feet occasionally to 9 feet. 
.tuesday night...west winds 20 to 30 knots becoming north 10 to
20 knots after midnight. waves building to 5 to 8 feet
occasionally to 10 feet, then subsiding to 2 to 4 feet. 
.wednesday...north winds 5 to 15 knots. a chance of showers.
waves subsiding to calm to 2 feet. 
.thursday...northwest winds 10 to 20 knots veering north. waves
calm to 2 feet. 

$$

fzus63 kmqt 130201
glfls 
expires:202609130800;;355765

open lake forecast for lake superior
national weather service marquette mi
1001 pm edt sat sep 12 2026

for waters beyond 5 nautical miles of shore on lake superior.

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

.synopsis...

a 29.7 inch trough continues to shift east of lake superior tonight. 
30.0 inch ridging builds back in from the northern plains on sunday 
and strengthens to 30.2 inches through monday. a low averaging 29.4 
inches crosses northern ontario on tuesday, with a strong 30.4 inch 
high building over the lake on wednesday.




lsz162-130800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1001 pm edt sat sep 12 2026 /901 pm cdt sat sep 12 2026/

.rest of tonight...west winds 15 to 25 knots diminishing to 10 to
20 knots late. waves 1 to 3 feet. 
.sunday...west winds 15 to 25 knots becoming northwest 10 to
20 knots late. waves subsiding to calm to 2 feet. 
.sunday night...northwest winds 5 to 15 knots diminishing to less
than 10 knots late. waves calm to 2 feet. 
.monday...south winds 5 to 15 knots becoming southeast 15 to
25 knots by mid afternoon. showers likely by mid afternoon. waves
calm to 2 feet. 
.monday night...southeast gales to 35 knots veering southwest
after midnight. showers and a slight chance of thunderstorms
through midnight, then a slight chance of showers after midnight.
waves building to 4 to 7 feet occasionally to 9 feet, then
subsiding to 3 to 6 feet occasionally to 8 feet. 
.tuesday...west gales to 35 knots diminishing to 20 to 30 knots
by mid afternoon. waves subsiding to 2 to 4 feet. 
.tuesday night...northwest winds 10 to 20 knots diminishing to
5 to 15 knots after midnight. waves subsiding to calm to 2 feet. 
.wednesday...east winds 5 to 15 knots. waves calm to 2 feet. 
.thursday...west winds 5 to 15 knots veering northeast. waves
calm to 2 feet. 

$$

fzus63 kmqt 130201
glfls 
expires:202609130800;;355766

open lake forecast for lake superior
national weather service marquette mi
1001 pm edt sat sep 12 2026

for waters beyond 5 nautical miles of shore on lake superior.

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

.synopsis...

a 29.7 inch trough continues to shift east of lake superior tonight. 
30.0 inch ridging builds back in from the northern plains on sunday 
and strengthens to 30.2 inches through monday. a low averaging 29.4 
inches crosses northern ontario on tuesday, with a strong 30.4 inch 
high building over the lake on wednesday.




lsz263-130800-
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 pm edt sat sep 12 2026

.rest of tonight...west winds 15 to 25 knots veering northwest
after midnight. waves 3 to 5 feet occasionally to 7 feet. 
.sunday...northwest winds 15 to 25 knots becoming west 20 to
30 knots in the afternoon, then diminishing to 15 to 25 knots
late. waves subsiding to 2 to 4 feet, then building to 3 to
5 feet occasionally to 7 feet. 
.sunday night...northwest winds 10 to 20 knots diminishing to
5 to 15 knots after midnight, then backing west late. waves
subsiding to calm to 2 feet. 
.monday...south winds 15 to 25 knots becoming southeast 20 to
30 knots by mid afternoon. a chance of showers by mid afternoon.
waves calm to 2 feet. 
.monday night...south gales to 35 knots veering southwest after
midnight. showers and a slight chance of thunderstorms through
midnight, then a chance of showers after midnight. waves building
to 5 to 8 feet occasionally to 10 feet, then subsiding to 3 to
6 feet occasionally to 8 feet. 
.tuesday...west gales to 40 knots. waves building to 7 to 10 feet
occasionally to 13 feet, then subsiding to 4 to 7 feet
occasionally to 9 feet. 
.tuesday night...northwest winds 20 to 30 knots diminishing to
5 to 15 knots after midnight. waves subsiding to calm to 2 feet. 
.wednesday...east winds 5 to 15 knots veering south. waves calm
to 2 feet. 
.thursday...west winds 10 to 20 knots. waves calm to 2 feet. 

$$

fzus63 kmqt 130201
glfls 
expires:202609130800;;355767

open lake forecast for lake superior
national weather service marquette mi
1001 pm edt sat sep 12 2026

for waters beyond 5 nautical miles of shore on lake superior.

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

.synopsis...

a 29.7 inch trough continues to shift east of lake superior tonight. 
30.0 inch ridging builds back in from the northern plains on sunday 
and strengthens to 30.2 inches through monday. a low averaging 29.4 
inches crosses northern ontario on tuesday, with a strong 30.4 inch 
high building over the lake on wednesday.




lsz264-130800-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
1001 pm edt sat sep 12 2026

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

$$