fzus61 kbuf 110802
glflo 
expires:202609111500;;261394

open lake forecast for lake ontario
national weather service buffalo ny
402 am edt fri sep 11 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 will 
build from the western great lakes today, before exiting toward the 
new england coast on saturday. a warm front will sweep northeastward 
across lake ontario saturday evening through saturday night before a 
cold front sweeps eastward across lake ontario on sunday. behind the 
cold front, a 30.1 inch ridge will slide eastward across the lake 
through monday. on tuesday, the ridge should exit toward new england 
and allow a warm front to sweep northeastward across lake ontario.


loz062-111500-
lake ontario open waters from the niagara river to hamlin beach-
402 am edt fri sep 11 2026

.today...northwest winds 10 knots or less becoming southwest.
waves 1 foot or less. 
.tonight...south winds 5 to 10 knots becoming southeast. waves
1 foot or less. 
.saturday...southeast winds 10 knots or less becoming east. waves
1 foot or less. 
.saturday night...southeast winds 5 to 10 knots becoming
southwest. waves 2 feet or less. 
.sunday...west winds 10 to 15 knots becoming northwest 15 to
20 knots. waves 1 to 3 feet. 
.monday...north winds 5 to 15 knots becoming southeast. waves
1 to 3 feet. 
.tuesday...south winds 15 to 20 knots becoming west and
diminishing to around 10 knots. a chance of showers during the
day, then showers likely tuesday night. waves 1 to 3 feet
building to 2 to 4 feet, then subsiding to 1 to 3 feet. 

$$

fzus61 kbuf 110802
glflo 
expires:202609111500;;261395

open lake forecast for lake ontario
national weather service buffalo ny
402 am edt fri sep 11 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 will 
build from the western great lakes today, before exiting toward the 
new england coast on saturday. a warm front will sweep northeastward 
across lake ontario saturday evening through saturday night before a 
cold front sweeps eastward across lake ontario on sunday. behind the 
cold front, a 30.1 inch ridge will slide eastward across the lake 
through monday. on tuesday, the ridge should exit toward new england 
and allow a warm front to sweep northeastward across lake ontario.


loz063>065-111500-
lake ontario open waters from hamlin beach to the saint lawrence
river-
402 am edt fri sep 11 2026

.today...north winds 5 to 10 knots becoming west. waves 2 feet or
less. 
.tonight...west winds 10 knots or less becoming south. waves
1 foot or less. 
.saturday...south winds 10 to 15 knots becoming southeast. waves
1 to 3 feet. 
.saturday night...south winds 15 to 20 knots becoming southwest.
a chance of showers. waves 1 to 3 feet building to 2 to 4 feet,
then subsiding to 1 to 3 feet. 
.sunday...southwest winds 10 to 15 knots becoming northwest 15 to
20 knots. a chance of showers during the day. waves 1 to 3 feet
building to 2 to 4 feet. 
.monday...north winds 5 to 15 knots becoming southeast 15 to
20 knots. waves 1 to 3 feet. 
.tuesday...south winds 15 to 25 knots becoming southwest. a
chance of showers during the day, then showers likely tuesday
night. waves 3 to 5 feet subsiding to 1 to 3 feet. 

$$

fzus61 kcle 110745
glfle 
expires:202609111415;;260900

open lake forecast for lake erie
national weather service cleveland oh
345 am edt fri sep 11 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 30.00 inches over the area will move east tonight
and allow a warm front across the lake for saturday. a cold front
will cross the lake on sunday. high pressure 30.30 inches will
build into the region for monday. a cold front will cross the area
on tuesday into wednesday.


lez164>167-111415-
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-
345 am edt fri sep 11 2026

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

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 110745
glfle 
expires:202609111415;;260901

open lake forecast for lake erie
national weather service cleveland oh
345 am edt fri sep 11 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 30.00 inches over the area will move east tonight
and allow a warm front across the lake for saturday. a cold front
will cross the lake on sunday. high pressure 30.30 inches will
build into the region for monday. a cold front will cross the area
on tuesday into wednesday.


lez061-168-169-111415-
ripley to buffalo ny extending from 5nm off shoreline to us-
canadian border-geneva-on-the-
lake to conneaut oh beyond 5 nm off shoreline to us-
canadian border-
conneaut oh to ripley ny beyond 5 nm off shoreline to us-
canadian border-
345 am edt fri sep 11 2026

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

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 110745
glfle 
expires:202609111415;;260899

open lake forecast for lake erie
national weather service cleveland oh
345 am edt fri sep 11 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 30.00 inches over the area will move east tonight
and allow a warm front across the lake for saturday. a cold front
will cross the lake on sunday. high pressure 30.30 inches will
build into the region for monday. a cold front will cross the area
on tuesday into wednesday.


lez162-163-111415-
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-
345 am edt fri sep 11 2026

.today...northeast winds 5 to 10 knots becoming east. waves
1 foot or less. 
.tonight...east winds 5 to 10 knots becoming southeast. waves
2 feet or less. 
.saturday...south winds 10 knots or less. waves 1 foot or less. 
.saturday night...south winds 5 to 10 knots becoming west. waves
1 foot or less. 
.sunday...west winds 5 to 15 knots becoming north. waves 1 to
3 feet. 
.monday...northeast winds 10 to 15 knots becoming south 15 to
20 knots. waves 1 to 3 feet. 
.tuesday...south winds 15 to 20 knots becoming north 10 to
15 knots. a chance of showers during the day, then a chance of
showers and thunderstorms tuesday night. waves 1 to 3 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus63 kdtx 110733
glflh 
expires:202609111545;;260493

open lake forecast for lake huron
national weather service detroit/pontiac mi
333 am edt fri sep 11 2026

for waters beyond five nautical miles off shore on lake huron

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

.synopsis...high pressure, 30.00 inches, parked over the central
great lakes today. low pressure, 29.30 inches, lifting over
northern ontario then drags a cold front across the central great
lakes late saturday- sunday.


lhz462>464-111545-
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-
333 am edt fri sep 11 2026

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


$$

fzus63 kdtx 110733
glflh 
expires:202609111545;;260492

open lake forecast for lake huron
national weather service detroit/pontiac mi
333 am edt fri sep 11 2026

for waters beyond five nautical miles off shore on lake huron

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

.synopsis...high pressure, 30.00 inches, parked over the central
great lakes today. low pressure, 29.30 inches, lifting over
northern ontario then drags a cold front across the central great
lakes late saturday- sunday.


lhz361>363-111545-
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-
333 am edt fri sep 11 2026

.today...light and variable winds becoming south 5 to 10 knots.
waves 2 feet or less. 
.tonight...south winds 10 to 15 knots. waves 2 to 4 feet. 
.saturday...south winds 10 to 15 knots. a chance of showers in
the afternoon. waves 3 to 5 feet. 
.saturday night...south winds 10 to 15 knots veering to the west
after midnight. a chance of showers in the evening. waves 2 to
4 feet subsiding to 1 to 3 feet in the late evening and
overnight. 
.sunday...northwest winds 5 to 10 knots becoming west 10 to
15 knots late in the morning...then becoming northwest 15 to
20 knots late in the afternoon decreasing to 10 to 15 knots late
in the evening. waves 1 to 3 feet building to 3 to 5 feet. 
.monday...northwest winds 5 to 10 knots veering to the northeast
in the late morning and early afternoon...then becoming southeast
10 to 15 knots with gusts to around 30 knots early in the evening
increasing to 20 to 25 knots with gusts to 40 knot gales by
midnight. a chance of showers . waves 2 to 4 feet subsiding to
1 to 3 feet in the late morning and early afternoon...then
building to 3 to 5 feet early in the evening building to 8 to
12 feet by midnight. waves occasionally around 15 feet. 
.tuesday...south winds to 30 knots with gusts to 45 knot gales
becoming southwest 20 to 25 knots with gusts to 40 knot gales in
the late morning and early afternoon...then decreasing to 15 to
20 knots with gusts to around 30 knots early in the evening
becoming northwest 10 to 15 knots by midnight. a chance of
showers until afternoon. waves 6 to 9 feet subsiding to 3 to
5 feet by midnight. waves occasionally around 12 feet. 


$$

fzus63 kdtx 110729
glfsc 
expires:202609111530;;260373

lake st clair forecast
national weather service detroit/pontiac mi
329 am edt fri sep 11 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...high pressure, 30.00 inches, parked over the central
great lakes today. low pressure, 29.30 inches, lifting over
northern ontario then drags a cold front across the central great
lakes late saturday- sunday.


lcz460-111530-
lake st clair-
329 am edt fri sep 11 2026

.today...northeast winds 5 to 10 knots becoming east. sunny. 
waves 2 feet or less.
.tonight...southeast winds 5 to 10 knots increasing to 10 to 15
knots by midnight...then diminishing to 5 to 10 knots early in the
morning. mostly clear. waves 2 feet or less.
.saturday...south winds 5 to 10 knots. partly sunny. waves 2 feet or
less.
.saturday night...southwest winds 5 to 10 knots veering to the west
after midnight. mostly clear. waves 2 feet or less.
.sunday...northwest winds 5 to 10 knots becoming north 15 to 20
knots. mostly sunny in the morning becoming partly cloudy. waves 2
feet or less.
.monday...southeast winds 15 to 20 knots. partly cloudy. waves 2
feet or less.
.tuesday...west winds 20 to 25 knots with gusts to 30 knots. partly
cloudy. showers likely. waves 1 to 3 feet. a small craft advisory
may be needed.

$$

fzus63 kmkx 110758
glflm 
expires:202609111515;;261127

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
258 am cdt fri sep 11 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...

high pressure around 30.0 inches will continue to produce light
and variable winds into this morning before shifting eastward,
allowing southwesterly winds to increase as low pressure around
29.2 inches moves through ontario into the hudson bay. a few gusts
up to gale force are possible tonight into saturday in the
northern third of the open waters. low pressure will drag a weak 
cold front across the lake on saturday, shifting winds to the 
west-northwest by saturday night. winds gradually diminish 
through sunday as high pressure around 30.2 inches builds across 
the northern plains and into the great lakes. another area of low
pressure then develops across the canadian plains and tracks 
across ontario for monday through tuesday. this will bring a 
return of increasing south-southwesterly wind over lake michigan 
ahead of this systems cold front, with northwesterly winds behind
the front. gales are possible monday into monday night as the low
makes its closest approach.


lmz080-669-671-673-675-777-779-870-872-874-876-878-111515-
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-
258 am cdt fri sep 11 2026

sheboygan wi to pentwater mi south...

.today...southeast winds 10 to 15 kt increasing to 10 to 20 kt.
waves 2 to 4 ft. 
.tonight...southeast winds 10 to 20 kt becoming south 15 to
25 kt. waves 2 to 4 ft. 
.saturday...south winds 15 to 25 kt becoming southwest 10 to
20 kt. waves 4 to 6 ft occasionally to 8 ft. 
.saturday night...west winds 10 to 20 kt becoming north. waves
3 to 5 ft. 
.sunday...north winds 10 to 20 kt. waves 3 to 5 ft. 
.sunday night...north winds 10 to 20 kt becoming northeast. waves
2 to 4 ft. 
.monday...east winds to 30 kt becoming southeast gales to 35 kt.
chance of showers. waves 4 to 7 ft occasionally to 9 ft building
to 7 to 10 ft occasionally to 13 ft. 
.tuesday...southwest gales to 35 kt becoming northwest 15 to
25 kt. chance of showers. waves 10 to 14 ft occasionally to 18 ft
subsiding to 5 to 8 ft occasionally to 10 ft.  

$$

fzus63 kmkx 110758
glflm 
expires:202609111515;;261126

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
258 am cdt fri sep 11 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...

high pressure around 30.0 inches will continue to produce light
and variable winds into this morning before shifting eastward,
allowing southwesterly winds to increase as low pressure around
29.2 inches moves through ontario into the hudson bay. a few gusts
up to gale force are possible tonight into saturday in the
northern third of the open waters. low pressure will drag a weak 
cold front across the lake on saturday, shifting winds to the 
west-northwest by saturday night. winds gradually diminish 
through sunday as high pressure around 30.2 inches builds across 
the northern plains and into the great lakes. another area of low
pressure then develops across the canadian plains and tracks 
across ontario for monday through tuesday. this will bring a 
return of increasing south-southwesterly wind over lake michigan 
ahead of this systems cold front, with northwesterly winds behind
the front. gales are possible monday into monday night as the low
makes its closest approach.


lmz261-362-364-366-563-565-567-868-111515-
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-
258 am cdt fri sep 11 2026

sheboygan wi to pentwater mi north...

.today...southwest winds 10 to 20 kt becoming south to 30 kt.
waves 2 to 4 ft building to 4 to 6 ft occasionally to 8 ft. 
.tonight...south winds to 30 kt diminishing to 15 to 25 kt. waves
4 to 6 ft occasionally to 8 ft. 
.saturday...south winds to 30 kt becoming southwest. waves 4 to
7 ft occasionally to 9 ft subsiding to 4 to 6 ft occasionally to
8 ft. 
.saturday night...northwest winds 10 to 20 kt. waves 3 to 5 ft. 
.sunday...northwest winds 10 to 20 kt increasing to 15 to 25 kt.
waves 1 to 3 ft. 
.sunday night...north winds 10 to 20 kt becoming northeast. waves
1 to 3 ft. 
.monday...east winds to 30 kt becoming southeast. chance of
showers. waves 4 to 6 ft occasionally to 8 ft building to 6 to
9 ft occasionally to 12 ft. 
.tuesday...west gales to 35 kt diminishing to 30 kt. waves 10 to 
14 ft occasionally to 18 ft subsiding to 5 to 8 ft occasionally to
10 ft. 

$$

fzus63 kmqt 110801
glfls 
expires:202609112000;;261292

open lake forecast for lake superior
national weather service marquette mi
400 am edt fri sep 11 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...

30.0 inch ridge is exiting eastward as a 29.6 inch trough moves 
across the northern plains. the trough tracks towards hudson bay by 
this afternoon, bringing 29.8 inch troughing to the lake. a cold 
front and 29.7 inch trough passes through on saturday with ridging 
in its wake reaching 30.0 inches by sunday. this strengthens further 
to 30.2 inches monday. 




lsz264-112000-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
400 am edt fri sep 11 2026

.early this morning...southwest winds 15 to 25 knots. waves 1 to
3 feet building to 2 to 4 feet. 
.today...southwest winds 20 to 30 knots diminishing to 15 to
25 knots in the afternoon, then becoming south 10 to 20 knots
late. waves building to 3 to 5 feet occasionally to 7 feet, then
subsiding to 1 to 3 feet. 
.tonight...south winds 10 to 20 knots increasing to 15 to
25 knots after midnight. a chance of showers through midnight. a
chance of thunderstorms. showers after midnight. waves building
to 2 to 4 feet. 
.saturday...west winds 15 to 25 knots increasing to 30 knots with
a few gale force gusts to 35 knots possible. a slight chance of
showers through early afternoon. waves building to 3 to 6 feet
occasionally to 8 feet. 
.saturday night...northwest winds 20 to 30 knots diminishing to
15 to 25 knots after midnight. waves subsiding to 2 to 4 feet. 
.sunday...northwest winds 10 to 20 knots. waves subsiding to 1 to
3 feet. 
.sunday night...northwest winds 5 to 15 knots veering north after
midnight. waves subsiding to calm to 2 feet. 
.monday...southeast gales to 40 knots becoming south gales to
45 knots. a chance of showers, then showers. waves building to
8 to 11 feet occasionally to 14 feet, then subsiding to 6 to
9 feet occasionally to 11 feet. 
.tuesday...west gales to 40 knots becoming northwest 15 to
25 knots. waves subsiding to calm to 2 feet. 

$$

fzus63 kmqt 110801
glfls 
expires:202609112000;;261293

open lake forecast for lake superior
national weather service marquette mi
400 am edt fri sep 11 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...

30.0 inch ridge is exiting eastward as a 29.6 inch trough moves 
across the northern plains. the trough tracks towards hudson bay by 
this afternoon, bringing 29.8 inch troughing to the lake. a cold 
front and 29.7 inch trough passes through on saturday with ridging 
in its wake reaching 30.0 inches by sunday. this strengthens further 
to 30.2 inches monday. 




lsz265-112000-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
400 am edt fri sep 11 2026

.early this morning...southwest winds 15 to 25 knots. waves calm
to 2 feet building to 1 to 3 feet. 
.today...southwest winds 20 to 30 knots becoming south 15 to
25 knots in the afternoon, then increasing to 20 to 30 knots
late. waves building to 2 to 4 feet. 
.tonight...south winds 20 to 30 knots. a chance of showers and a
slight chance of thunderstorms. waves subsiding to 1 to 3 feet. 
.saturday...southwest winds 20 to 30 knots becoming west to
30 knots with a few gale force gusts to 35 knots possible in the
afternoon. waves building to 3 to 5 feet occasionally to 7 feet. 
.saturday night...west winds 20 to 30 knots veering northwest
after midnight. waves subsiding to 2 to 4 feet. 
.sunday...northwest winds 20 to 30 knots. waves 2 to 4 feet. 
.sunday night...northwest winds 10 to 20 knots veering north
after midnight. waves subsiding to calm to 2 feet. 
.monday...southeast gales to 40 knots becoming south gales to
45 knots. showers. waves building to 6 to 10 feet occasionally to
13 feet. 
.tuesday...west gales to 45 knots becoming northwest 15 to
25 knots. waves building to 7 to 10 feet occasionally to 13 feet,
then subsiding to calm to 2 feet. 

$$

fzus63 kmqt 110801
glfls 
expires:202609112000;;261290

open lake forecast for lake superior
national weather service marquette mi
400 am edt fri sep 11 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...

30.0 inch ridge is exiting eastward as a 29.6 inch trough moves 
across the northern plains. the trough tracks towards hudson bay by 
this afternoon, bringing 29.8 inch troughing to the lake. a cold 
front and 29.7 inch trough passes through on saturday with ridging 
in its wake reaching 30.0 inches by sunday. this strengthens further 
to 30.2 inches monday. 




lsz162-112000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
400 am edt fri sep 11 2026 /300 am cdt fri sep 11 2026/

.early this morning...southwest winds 15 to 25 knots. waves 1 to
3 feet. 
.today...southwest winds 15 to 25 knots increasing to 20 to
30 knots in the afternoon, then becoming south 15 to 25 knots
late. waves building to 2 to 4 feet, then subsiding to 1 to
3 feet. 
.tonight...south winds 15 to 25 knots veering southwest late.
showers through midnight. a chance of thunderstorms. a chance of
showers after midnight. waves subsiding to calm to 2 feet, then
building to 1 to 3 feet. 
.saturday...west winds 15 to 25 knots increasing to 20 to
30 knots in the afternoon. waves 1 to 3 feet. 
.saturday night...northwest winds 15 to 25 knots diminishing to
10 to 20 knots after midnight. waves subsiding to calm to 2 feet.
.sunday...northwest winds 10 to 20 knots backing west by mid
afternoon. waves calm to 2 feet. 
.sunday night...northwest winds 5 to 15 knots veering east after
midnight. waves calm to 2 feet. 
.monday...southeast gales to 35 knots veering west. showers.
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 becoming northwest 5 to
15 knots. waves subsiding to calm to 2 feet. 

$$

fzus63 kmqt 110801
glfls 
expires:202609112000;;261295

open lake forecast for lake superior
national weather service marquette mi
400 am edt fri sep 11 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...

30.0 inch ridge is exiting eastward as a 29.6 inch trough moves 
across the northern plains. the trough tracks towards hudson bay by 
this afternoon, bringing 29.8 inch troughing to the lake. a cold 
front and 29.7 inch trough passes through on saturday with ridging 
in its wake reaching 30.0 inches by sunday. this strengthens further 
to 30.2 inches monday. 




lsz267-112000-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
400 am edt fri sep 11 2026

.early this morning...south winds 10 to 20 knots. waves calm to
2 feet building to 1 to 3 feet. 
.today...south winds 15 to 25 knots increasing to 20 to 30 knots
late. waves building to 2 to 4 feet. 
.tonight...south winds 20 to 30 knots. a slight chance of showers
after midnight. waves building to 3 to 5 feet occasionally to
7 feet. 
.saturday...south winds 20 to 30 knots veering west in the
afternoon. a slight chance of thunderstorms through early
afternoon. a chance of showers. waves subsiding to 2 to 4 feet,
then building to 3 to 5 feet occasionally to 7 feet. 
.saturday night...west winds 20 to 30 knots veering northwest
after midnight. waves building to 3 to 6 feet occasionally to
8 feet. 
.sunday...northwest winds 15 to 25 knots increasing to 20 to
30 knots by mid afternoon. waves building to 4 to 7 feet
occasionally to 9 feet, then subsiding to 3 to 6 feet
occasionally to 8 feet. 
.sunday night...northwest winds 15 to 25 knots becoming north
5 to 15 knots after midnight. waves subsiding to calm to 2 feet. 
.monday...southeast winds 15 to 25 knots becoming south gales to
40 knots. a chance of showers, then showers. waves building to
7 to 11 feet occasionally to 14 feet. 
.tuesday...west gales to 40 knots becoming northwest 15 to
25 knots. waves building to 9 to 12 feet occasionally to 15 feet,
then subsiding to 1 to 3 feet. 

$$

fzus63 kmqt 110801
glfls 
expires:202609112000;;261294

open lake forecast for lake superior
national weather service marquette mi
400 am edt fri sep 11 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...

30.0 inch ridge is exiting eastward as a 29.6 inch trough moves 
across the northern plains. the trough tracks towards hudson bay by 
this afternoon, bringing 29.8 inch troughing to the lake. a cold 
front and 29.7 inch trough passes through on saturday with ridging 
in its wake reaching 30.0 inches by sunday. this strengthens further 
to 30.2 inches monday. 




lsz266-112000-
lake superior east of a line from manitou island to marquette mi
and west of a line from grand marais mi to the us/canadian border
beyond 5nm from shore-
400 am edt fri sep 11 2026

.early this morning...south winds 15 to 25 knots. waves 1 to
3 feet. 
.today...south winds 20 to 30 knots diminishing to 15 to 25 knots
in the afternoon, then increasing to 20 to 30 knots late. waves
building to 3 to 5 feet occasionally to 7 feet. 
.tonight...south winds 20 to 30 knots. a chance of showers and a
slight chance of thunderstorms. waves building to 4 to 7 feet
occasionally to 9 feet, then subsiding to 3 to 6 feet
occasionally to 8 feet. 
.saturday...southwest winds 20 to 30 knots veering west in the
afternoon. a slight chance of thunderstorms through early
afternoon. a slight chance of showers. waves subsiding to 3 to
5 feet occasionally to 7 feet. 
.saturday night...west winds 20 to 30 knots veering northwest
after midnight. waves building to 3 to 6 feet occasionally to
8 feet. 
.sunday...northwest winds 15 to 25 knots. waves subsiding to 3 to
5 feet occasionally to 7 feet. 
.sunday night...northwest winds 10 to 20 knots becoming north
5 to 15 knots after midnight. waves subsiding to calm to 2 feet. 
.monday...southeast gales to 40 knots becoming south gales to
45 knots. a chance of showers, then showers. waves building to
9 to 12 feet occasionally to 15 feet. 
.tuesday...west gales to 45 knots becoming northwest 20 to
30 knots. waves subsiding to 1 to 3 feet. 

$$

fzus63 kmqt 110801
glfls 
expires:202609112000;;261291

open lake forecast for lake superior
national weather service marquette mi
400 am edt fri sep 11 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...

30.0 inch ridge is exiting eastward as a 29.6 inch trough moves 
across the northern plains. the trough tracks towards hudson bay by 
this afternoon, bringing 29.8 inch troughing to the lake. a cold 
front and 29.7 inch trough passes through on saturday with ridging 
in its wake reaching 30.0 inches by sunday. this strengthens further 
to 30.2 inches monday. 




lsz263-112000-
lake superior from saxon harbor wi to upper entrance to portage
canal mi 5nm off shore to the us/canadian border including isle
royale national park-
400 am edt fri sep 11 2026

.early this morning...southwest winds 20 to 30 knots. waves 2 to
4 feet. 
.today...southwest winds 20 to 30 knots backing south late. waves
building to 3 to 5 feet occasionally to 7 feet, then subsiding to
1 to 3 feet. 
.tonight...south winds 15 to 25 knots veering southwest late. a
chance of showers through midnight. a chance of thunderstorms.
showers after midnight. waves building to 2 to 4 feet. 
.saturday...west winds 15 to 25 knots increasing to 20 to
30 knots in the afternoon. waves building to 3 to 6 feet
occasionally to 8 feet. 
.saturday night...northwest winds 20 to 30 knots diminishing to
15 to 25 knots after midnight. waves subsiding to 2 to 4 feet. 
.sunday...northwest winds 10 to 20 knots backing west by mid
afternoon. waves subsiding to calm to 2 feet. 
.sunday night...northwest winds 5 to 15 knots veering east after
midnight. waves calm to 2 feet. 
.monday...southeast gales to 35 knots becoming west gales to
40 knots. a chance of showers. showers. waves building to 5 to
8 feet occasionally to 10 feet. 
.tuesday...west gales to 40 knots becoming northwest 15 to
25 knots. waves building to 6 to 9 feet occasionally to 11 feet,
then subsiding to calm to 2 feet. 

$$