fzus61 kbuf 182002
glflo 
expires:202609190300;;672671

open lake forecast for lake ontario
national weather service buffalo ny
402 pm edt fri sep 18 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 30.4 inch high will build from southern quebec tonight 
to northern new england saturday, then off the new england coast 
saturday night. meanwhile, a weak 29.8 inch low is then forecast to 
move east across the eastern great lakes saturday night through 
sunday. a large 30.4 inch high will then slowly build east from 
northwest ontario sunday night to quebec by tuesday and wednesday, 
while gradually strengthening to 30.6 inches.


loz063>065-190300-
lake ontario open waters from hamlin beach to the saint lawrence
river-
402 pm edt fri sep 18 2026

.tonight...north winds 10 to 15 knots becoming northeast 15 to
20 knots. waves 1 to 3 feet building to 2 to 4 feet. 
.saturday...northeast winds 5 to 15 knots. waves 2 to 4 feet
subsiding to 1 to 3 feet. 
.saturday night...east winds 5 to 10 knots becoming southeast. a
chance of showers overnight. waves 2 feet or less. 
.sunday...southeast winds 10 to 15 knots becoming northeast.
showers likely. waves 1 to 3 feet. 
.sunday night...northeast winds 15 to 25 knots. a chance of
showers in the evening. waves 2 to 4 feet building to 3 to
5 feet. 
.monday...northeast winds 15 to 25 knots. waves 4 to 7 feet
building to 5 to 8 feet. waves occasionally around 10 feet. 
.tuesday...east winds 15 to 25 knots. waves 5 to 8 feet subsiding
to 3 to 6 feet. waves occasionally around 10 feet. 
.wednesday...east winds 15 to 20 knots becoming southeast. a
chance of showers. waves 3 to 6 feet subsiding to 2 to 4 feet. 

$$

fzus61 kbuf 182002
glflo 
expires:202609190300;;672670

open lake forecast for lake ontario
national weather service buffalo ny
402 pm edt fri sep 18 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 30.4 inch high will build from southern quebec tonight 
to northern new england saturday, then off the new england coast 
saturday night. meanwhile, a weak 29.8 inch low is then forecast to 
move east across the eastern great lakes saturday night through 
sunday. a large 30.4 inch high will then slowly build east from 
northwest ontario sunday night to quebec by tuesday and wednesday, 
while gradually strengthening to 30.6 inches.


loz062-190300-
lake ontario open waters from the niagara river to hamlin beach-
402 pm edt fri sep 18 2026

.tonight...north winds 10 to 15 knots becoming east 15 to
20 knots. waves 2 feet or less building to 3 to 5 feet. 
.saturday...east winds 15 to 20 knots diminishing to 10 to
15 knots. waves 2 to 4 feet. 
.saturday night...east winds 10 to 15 knots. a chance of showers
overnight. waves 1 to 3 feet. 
.sunday...east winds 10 to 15 knots becoming northeast. a chance
of showers. waves 1 to 3 feet. 
.sunday night...northeast winds 10 to 15 knots increasing to
15 to 25 knots. waves 1 to 3 feet building to 3 to 5 feet. 
.monday...northeast winds 15 to 25 knots increasing to 30 knots.
waves 3 to 6 feet building to 6 to 9 feet. waves occasionally
around 11 feet. 
.tuesday...east winds to 30 knots. a chance of showers tuesday
night. waves 6 to 9 feet. waves occasionally around 11 feet. 
.wednesday...east winds 15 to 25 knots. a chance of showers.
waves 4 to 7 feet subsiding to 3 to 6 feet. waves occasionally
around 9 feet. 

$$

fzus61 kcle 181959
glfle 
expires:202609190215;;672296

open lake forecast for lake erie
national weather service cleveland oh
359 pm edt fri sep 18 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 30.20 inches over the northern great lakes will
weaken tonight. this will allow a warm front to lift to south of
lake erie saturday as low pressure 29.80 inches moves east across
the southern great lakes saturday night into sunday. this will 
pull a cold front across the lake sunday afternoon. a trough 
averaging 29.90 inches will linger early next week.


lez162-163-190215-
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-
359 pm edt fri sep 18 2026

.tonight...northeast winds 10 to 15 knots becoming east. waves
1 to 2 feet. 
.saturday...east winds around 10 knots. a slight chance of
showers early, then a chance of showers. a chance of showers with
a slight chance of thunderstorms late. waves 1 to 2 feet. 
.saturday night...southeast winds around 10 knots becoming south.
showers with a chance of thunderstorms. waves 2 feet or less. 
.sunday...west winds 10 to 15 knots becoming northeast 15 to
20 knots. showers likely in the morning, then a chance of showers
in the afternoon. waves 1 to 3 feet building to 2 to 4 feet. 
.sunday night...northeast winds 15 to 25 knots. a chance of
showers in the evening. waves 2 to 4 feet building to 4 to
7 feet. waves occasionally around 9 feet. 
.monday...northeast winds to 30 knots. a chance of showers monday
night. waves 5 to 9 feet. waves occasionally around 11 feet. 
.tuesday...northeast winds to 30 knots becoming east. a chance of
showers during the day, then showers likely tuesday night. waves
5 to 9 feet. waves occasionally around 11 feet. 
.wednesday...east winds 15 to 25 knots. showers likely during the
day, then a chance of showers wednesday night. waves 4 to 7 feet
subsiding to 2 to 4 feet. waves occasionally around 9 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 181959
glfle 
expires:202609190215;;672297

open lake forecast for lake erie
national weather service cleveland oh
359 pm edt fri sep 18 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 30.20 inches over the northern great lakes will
weaken tonight. this will allow a warm front to lift to south of
lake erie saturday as low pressure 29.80 inches moves east across
the southern great lakes saturday night into sunday. this will 
pull a cold front across the lake sunday afternoon. a trough 
averaging 29.90 inches will linger early next week.


lez164>167-190215-
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-
359 pm edt fri sep 18 2026

.tonight...northeast winds 5 to 15 knots becoming east. waves
1 to 3 feet building to 2 to 4 feet. 
.saturday...east winds 5 to 15 knots. a slight chance of showers
through early afternoon, then a chance of showers late. waves
1 to 3 feet. 
.saturday night...east winds 10 to 15 knots becoming south. a
chance of showers and thunderstorms in the evening, then showers
with a chance of thunderstorms overnight. waves 1 to 3 feet. 
.sunday...southwest winds 10 to 15 knots becoming northeast 15 to
20 knots. showers. waves 1 to 3 feet building to 3 to 5 feet. 
.sunday night...northeast winds 15 to 25 knots. a chance of
showers in the evening. waves 3 to 6 feet building to 5 to
8 feet. waves occasionally around 10 feet. 
.monday...northeast winds to 30 knots becoming east. a chance of
showers monday night. waves 7 to 11 feet. waves occasionally
around 14 feet. 
.tuesday...east winds to 30 knots. a chance of showers. waves
7 to 11 feet. waves occasionally around 14 feet. 
.wednesday...east winds 15 to 25 knots. showers likely during the
day, then a chance of showers wednesday night. waves 5 to 8 feet
subsiding to 3 to 6 feet. waves occasionally around 10 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 181959
glfle 
expires:202609190215;;672298

open lake forecast for lake erie
national weather service cleveland oh
359 pm edt fri sep 18 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 30.20 inches over the northern great lakes will
weaken tonight. this will allow a warm front to lift to south of
lake erie saturday as low pressure 29.80 inches moves east across
the southern great lakes saturday night into sunday. this will 
pull a cold front across the lake sunday afternoon. a trough 
averaging 29.90 inches will linger early next week.


lez061-168-169-190215-
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-
359 pm edt fri sep 18 2026

.tonight...northeast winds 10 to 15 knots becoming east. waves
1 to 3 feet. 
.saturday...east winds 5 to 15 knots. a slight chance of showers
late. waves 1 to 3 feet. 
.saturday night...east winds 5 to 15 knots becoming south. a
chance of showers in the evening, then showers overnight. waves
2 feet or less. 
.sunday...south winds 5 to 15 knots becoming northeast 15 to
20 knots. showers likely. waves 1 to 3 feet building to 2 to
4 feet. 
.sunday night...northeast winds 15 to 25 knots. a chance of
showers in the evening. waves 2 to 4 feet building to 4 to
7 feet. waves occasionally around 9 feet. 
.monday...northeast winds 15 to 25 knots becoming east to
30 knots. a chance of showers monday night. waves 5 to 9 feet.
waves occasionally around 11 feet. 
.tuesday...east winds to 30 knots diminishing to 15 to 25 knots.
a chance of showers. waves 5 to 9 feet. waves occasionally around
11 feet. 
.wednesday...east winds 15 to 20 knots. a chance of showers
during the day, then showers likely wednesday night. waves 3 to
6 feet subsiding to 2 to 4 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus63 kdtx 181948
glfsc 
expires:202609190400;;672081

lake st clair forecast
national weather service detroit/pontiac mi
348 pm edt fri sep 18 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 tracks north of the great lakes today. a
low pressure system follows a stalled front from the central
plains into the ohio valley this weekend. another area of high
pressure then builds into northern ontario on sunday.


lcz460-190400-
lake st clair-
348 pm edt fri sep 18 2026

.tonight...northeast winds 15 to 20 knots diminishing to 10 to 15
knots after midnight. partly cloudy this evening becoming mostly
cloudy. waves 1 to 3 feet.
.saturday...east winds 10 to 15 knots. mostly cloudy. a chance of
light showers in the morning. light showers likely in the afternoon.
waves 2 feet or less.
.saturday night...east winds 10 to 15 knots. light showers and a
chance of thunderstorms. waves 2 feet or less.
.sunday...northeast winds 10 to 15 knots increasing to 15 to 20
knots early in the afternoon. mostly cloudy with a chance of
showers. waves 2 feet or less.
.sunday night...northeast winds 20 to 25 knots. mostly cloudy early
in the evening becoming partly cloudy. a chance of light showers
early in the evening. waves 1 to 3 feet.
.monday...northeast winds 15 to 20 knots increasing to 30 knots in
the evening. mostly cloudy. waves 1 to 3 feet building to 2 to 4
feet in the evening. a small craft advisory may be needed.
.tuesday...northeast winds to 30 knots with gusts to 35 knot gales.
mostly cloudy with a chance of showers. waves 2 to 4 feet.  a gale
warning may be needed.
.wednesday...northeast winds to 30 knots. mostly cloudy with a
chance of showers. waves 2 to 4 feet.

$$

fzus63 kdtx 181947
glflh 
expires:202609190400;;672078

open lake forecast for lake huron
national weather service detroit/pontiac mi
347 pm edt fri sep 18 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 tracks north of the great lakes today. a
low pressure system follows a stalled front from the central
plains into the ohio valley this weekend. another area of high
pressure then builds into northern ontario on sunday.


lhz462>464-190400-
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-
347 pm edt fri sep 18 2026

.tonight...northeast winds 10 to 15 knots becoming east 5 to
10 knots early in the morning. waves 3 to 5 feet subsiding to
1 to 3 feet after midnight. 
.saturday...east winds 5 to 10 knots becoming southeast 10 to
15 knots in the late morning and afternoon. a chance of showers
in the afternoon. waves 1 to 3 feet. 
.saturday night...southeast winds 10 to 15 knots becoming east
5 to 10 knots after midnight. a chance of showers after midnight.
waves 1 to 3 feet. 
.sunday...northeast winds 10 to 15 knots becoming north 15 to
20 knots early in the afternoon. a chance of showers in the
afternoon. waves 1 to 3 feet building to 3 to 5 feet early in the
afternoon. 
.sunday night...northeast winds 15 to 20 knots increasing to
20 to 25 knots after midnight. waves 4 to 6 feet. 
.monday...northeast winds 15 to 20 knots. waves 4 to 6 feet. 
.tuesday...northeast winds 15 to 20 knots with gusts to around
30 knots becoming east 20 to 25 knots with gusts to around
30 knots by midnight. a chance of showers by midnight. waves 4 to
6 feet. 
.wednesday...east winds 15 to 20 knots. a chance of showers.
waves 3 to 5 feet. waves occasionally around 8 feet. 


$$

fzus63 kdtx 181947
glflh 
expires:202609190400;;672077

open lake forecast for lake huron
national weather service detroit/pontiac mi
347 pm edt fri sep 18 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 tracks north of the great lakes today. a
low pressure system follows a stalled front from the central
plains into the ohio valley this weekend. another area of high
pressure then builds into northern ontario on sunday.


lhz362-363-190400-
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-
347 pm edt fri sep 18 2026

.tonight...northeast winds 5 to 10 knots veering to the east
early in the morning. waves 1 to 3 feet. 
.saturday...east winds 5 to 10 knots increasing to 10 to 15 knots
late in the morning...then becoming southeast 5 to 10 knots in
the afternoon. waves 1 to 3 feet. 
.saturday night...east winds 5 to 10 knots. a chance of showers.
waves 2 feet or less. 
.sunday...northeast winds 5 to 10 knots becoming north 10 to
15 knots in the late morning and afternoon. waves 1 to 3 feet. 
.sunday night...north winds 10 to 15 knots becoming northeast
20 to 25 knots with gusts to around 30 knots in the late evening
and overnight. waves 2 to 4 feet building to 5 to 7 feet in the
late evening and overnight. waves occasionally around 10 feet. 
.monday...northeast winds 15 to 20 knots. gusts to 30 knots late
in the afternoon. waves 5 to 7 feet. waves occasionally around
10 feet. 
.tuesday...east winds 15 to 20 knots with gusts to around
30 knots becoming northeast 20 to 25 knots with gusts to 35 knot
gales early in the evening...then becoming east 15 to 20 knots
with gusts to around 30 knots by midnight. waves 5 to 7 feet.
waves occasionally around 10 feet. 
.wednesday...east winds 15 to 20 knots decreasing to 10 to
15 knots by midnight. a chance of showers. waves 4 to 6 feet.
waves occasionally around 8 feet. 


$$

fzus63 kdtx 181947
glflh 
expires:202609190400;;672076

open lake forecast for lake huron
national weather service detroit/pontiac mi
347 pm edt fri sep 18 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 tracks north of the great lakes today. a
low pressure system follows a stalled front from the central
plains into the ohio valley this weekend. another area of high
pressure then builds into northern ontario on sunday.


lhz361-190400-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
347 pm edt fri sep 18 2026

.tonight...light and variable winds becoming east 5 to 10 knots
early in the morning. waves 2 feet or less. 
.saturday...east winds 5 to 10 knots becoming southeast 10 to
15 knots in the late morning and afternoon. waves 1 to 3 feet. 
.saturday night...east winds 5 to 10 knots backing to the
northeast after midnight. waves 2 feet or less. 
.sunday...north winds 5 to 10 knots. waves 2 feet or less. 
.sunday night...north winds 10 to 15 knots becoming northeast
15 to 20 knots with gusts to around 30 knots in the late evening
and overnight. waves 2 feet or less building to 3 to 5 feet in
the late evening and overnight. 
.monday...northeast winds 15 to 20 knots becoming east 10 to
15 knots late in the morning...then decreasing to 5 to 10 knots
late in the afternoon increasing to 15 to 20 knots late in the
evening. waves 3 to 5 feet subsiding to 1 to 3 feet late in the
afternoon...then building to 3 to 5 feet late in the evening. 
.tuesday...east winds 15 to 20 knots decreasing to 10 to 15 knots
early in the evening...then increasing to 15 to 20 knots with
gusts to around 30 knots by midnight. waves 3 to 5 feet. 
.wednesday...east winds 15 to 20 knots with gusts to around
30 knots decreasing to 10 to 15 knots . waves 3 to 5 feet
subsiding to 2 to 4 feet by midnight. 


$$

fzus63 kmkx 182002
glflm 
expires:202609190315;;672626

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
302 pm cdt fri sep 18 2026

for waters beyond five nautical miles of shore on lake michigan.

waves are provided as a range of significant wave heights, which
is the average of the highest 1/3 of the wave, along with the
average height of the highest 10% of the waves which will
occasionally be encountered.

.synopsis...

low pressure around 29.9 inches over the missouri river this 
afternoon will track over or just south of the waters during the 
day on saturday. winds will veer east-southeasterly ahead of the 
low, becoming gusty at times. a few gusts could briefly approach 
gales, particularly tonight and saturday morning. areas of 
widespread showers and thunderstorms will accompany the passing 
area of low pressure tonight through at least saturday night.

winds will trend northeasterly sunday through monday night, as 
the aforementioned area of low pressure slowly moves into the 
ohio river valley. additional rain showers will accompany the 
passing low. high pressure around 30.5 inches will concurrently 
slide into ontario from the canadian great plains, with gusty 
winds expected through most of the late weekend to early week 
time frame. similar to saturday, gusts could occasionally 
approach gale thresholds during the sunday into monday night time
frame. winds will steadily taper tuesday through wednesday, as a 
new area of high pressure around 30.3 inches builds into northern
wisconsin.


lmz080-669-671-673-675-777-779-870-872-874-876-878-190315-
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-
302 pm cdt fri sep 18 2026

sheboygan wi to pentwater mi south...

.tonight...northeast winds 10 to 20 kt becoming east 15 to 25 kt,
then increasing to 30 kt late. slight chance of showers this
evening, then chance of showers and slight chance of
thunderstorms overnight. waves 3 to 5 ft building to 5 to 8 ft
occasionally to 10 ft. 
.saturday...southeast winds to 30 kt diminishing to 15 to 25 kt.
showers and slight chance of thunderstorms in the morning, then
chance of showers and slight chance of thunderstorms in the
afternoon. waves 6 to 9 ft occasionally to 12 ft. 
.saturday night...east winds 10 to 20 kt becoming northeast 15 to
25 kt. showers likely with a chance of thunderstorms in the
evening, then showers likely overnight. waves 4 to 7 ft
occasionally to 9 ft subsiding to 4 to 6 ft occasionally to 8 ft.
.sunday...northeast winds to 30 kt increasing to gales to 35 kt.
chance of showers. waves 5 to 8 ft occasionally to 10 ft building
to 8 to 11 ft occasionally to 14 ft. 
.sunday night...northeast gales to 35 kt becoming east to 30 kt.
chance of showers overnight. waves 8 to 11 ft occasionally to
14 ft subsiding to 7 to 10 ft occasionally to 13 ft. 
.monday...east winds to 30 kt becoming northeast gales to 35 kt.
chance of showers. waves 8 to 12 ft occasionally to 16 ft
building to 10 to 14 ft occasionally to 18 ft. 
.monday night...northeast gales to 35 kt becoming east to 30 kt.
waves 8 to 12 ft occasionally to 16 ft subsiding to 7 to 10 ft
occasionally to 13 ft. 
.tuesday...northeast winds to 30 kt. waves 7 to 10 ft
occasionally to 13 ft. 
.wednesday...northeast winds 15 to 25 kt diminishing to 10 to
20 kt. waves 4 to 6 ft occasionally to 8 ft.  

$$

fzus63 kmkx 182002
glflm 
expires:202609190315;;672625

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
302 pm cdt fri sep 18 2026

for waters beyond five nautical miles of shore on lake michigan.

waves are provided as a range of significant wave heights, which
is the average of the highest 1/3 of the wave, along with the
average height of the highest 10% of the waves which will
occasionally be encountered.

.synopsis...

low pressure around 29.9 inches over the missouri river this 
afternoon will track over or just south of the waters during the 
day on saturday. winds will veer east-southeasterly ahead of the 
low, becoming gusty at times. a few gusts could briefly approach 
gales, particularly tonight and saturday morning. areas of 
widespread showers and thunderstorms will accompany the passing 
area of low pressure tonight through at least saturday night.

winds will trend northeasterly sunday through monday night, as 
the aforementioned area of low pressure slowly moves into the 
ohio river valley. additional rain showers will accompany the 
passing low. high pressure around 30.5 inches will concurrently 
slide into ontario from the canadian great plains, with gusty 
winds expected through most of the late weekend to early week 
time frame. similar to saturday, gusts could occasionally 
approach gale thresholds during the sunday into monday night time
frame. winds will steadily taper tuesday through wednesday, as a 
new area of high pressure around 30.3 inches builds into northern
wisconsin.


lmz261-362-364-366-563-565-567-868-190315-
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-
302 pm cdt fri sep 18 2026

sheboygan wi to pentwater mi north...

.tonight...northeast winds 10 to 20 kt becoming southeast 15 to
25 kt. chance of showers. waves 2 to 4 ft building to 3 to 5 ft. 
.saturday...southeast winds to 30 kt becoming east 10 to 20 kt.
chance of showers. waves 4 to 7 ft occasionally to 9 ft. 
.saturday night...east winds 10 to 20 kt becoming northeast.
chance of showers in the evening. waves 3 to 5 ft subsiding to
2 to 4 ft. 
.sunday...northeast winds to 30 kt. waves 4 to 6 ft occasionally
to 8 ft building to 6 to 9 ft occasionally to 12 ft. 
.sunday night...northeast winds to 30 kt becoming east 15 to
25 kt. waves 6 to 9 ft occasionally to 12 ft. 
.monday...east winds to 30 kt becoming northeast. waves 4 to 7 ft
occasionally to 9 ft. 
.monday night...east winds to 30 kt diminishing to 15 to 25 kt.
waves 4 to 7 ft occasionally to 9 ft. 
.tuesday...east winds 15 to 25 kt becoming northeast to 30 kt.
waves 4 to 6 ft occasionally to 8 ft. 
.wednesday...east winds 15 to 25 kt becoming northeast. waves
2 to 4 ft.  

$$

fzus63 kmqt 182001
glfls 
expires:202609190800;;672496

open lake forecast for lake superior
national weather service marquette mi
401 pm edt fri sep 18 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...

30.4 inch high pressure continues to track eastward, weakening to 
30.2 inches as it moves into western quebec saturday morning. 
meanwhile, 29.9 inch low pressure develops over the central plains, 
reaching western iowa by saturday morning as another 29.8 inch low 
tracks across hudson bay. saturday into sunday, a 30.2 inch high 
over the canadian prairie builds to 30.4 inches as it moves into 
northwestern ontario, creating a 30.2 inch ridging pattern over lake 
superior. this high pressure center slowly builds to 30.5 inches as 
it shifts into quebec by midday tuesday, trailing a 30.4 inch ridge 
over lake superior. the high builds further to 30.6 inches wednesday 
as it progresses eastward.




lsz162-190800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
401 pm edt fri sep 18 2026 /301 pm cdt fri sep 18 2026/

.late this afternoon...east winds 10 to 20 knots. a slight chance
of rain. waves 1 to 3 feet building to 2 to 4 feet. 
.tonight...east winds 10 to 20 knots diminishing to 5 to 15 knots
after midnight. a slight chance of rain through midnight. waves
subsiding to calm to 2 feet. 
.saturday...east winds 5 to 15 knots becoming northeast 10 to
20 knots in the afternoon, then becoming east 5 to 15 knots late.
waves calm to 2 feet. 
.saturday night...northeast winds 5 to 15 knots backing north
after midnight, then becoming northeast 15 to 25 knots late.
waves building to 1 to 3 feet. 
.sunday...northeast winds 20 to 30 knots veering east 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...east winds 15 to 25 knots diminishing to 10 to
20 knots after midnight. waves subsiding to 1 to 3 feet. 
.monday...east winds 15 to 25 knots increasing to 20 to 30 knots
by mid afternoon. waves building to 2 to 4 feet. 
.monday night...east winds 15 to 25 knots diminishing to 5 to
15 knots after midnight. waves subsiding to calm to 2 feet. 
.tuesday...east winds 15 to 25 knots diminishing to 10 to
20 knots. waves calm to 2 feet. 
.wednesday...east winds 10 to 20 knots diminishing to 5 to
15 knots. waves calm to 2 feet. 

$$

fzus63 kmqt 182001
glfls 
expires:202609190800;;672497

open lake forecast for lake superior
national weather service marquette mi
401 pm edt fri sep 18 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...

30.4 inch high pressure continues to track eastward, weakening to 
30.2 inches as it moves into western quebec saturday morning. 
meanwhile, 29.9 inch low pressure develops over the central plains, 
reaching western iowa by saturday morning as another 29.8 inch low 
tracks across hudson bay. saturday into sunday, a 30.2 inch high 
over the canadian prairie builds to 30.4 inches as it moves into 
northwestern ontario, creating a 30.2 inch ridging pattern over lake 
superior. this high pressure center slowly builds to 30.5 inches as 
it shifts into quebec by midday tuesday, trailing a 30.4 inch ridge 
over lake superior. the high builds further to 30.6 inches wednesday 
as it progresses eastward.




lsz263-190800-
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-
401 pm edt fri sep 18 2026

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

$$

fzus63 kmqt 182001
glfls 
expires:202609190800;;672498

open lake forecast for lake superior
national weather service marquette mi
401 pm edt fri sep 18 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...

30.4 inch high pressure continues to track eastward, weakening to 
30.2 inches as it moves into western quebec saturday morning. 
meanwhile, 29.9 inch low pressure develops over the central plains, 
reaching western iowa by saturday morning as another 29.8 inch low 
tracks across hudson bay. saturday into sunday, a 30.2 inch high 
over the canadian prairie builds to 30.4 inches as it moves into 
northwestern ontario, creating a 30.2 inch ridging pattern over lake 
superior. this high pressure center slowly builds to 30.5 inches as 
it shifts into quebec by midday tuesday, trailing a 30.4 inch ridge 
over lake superior. the high builds further to 30.6 inches wednesday 
as it progresses eastward.




lsz264-190800-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
401 pm edt fri sep 18 2026

.late this afternoon...east winds 10 to 20 knots. waves 1 to
3 feet subsiding to calm to 2 feet. 
.tonight...southeast winds 10 to 20 knots diminishing to 5 to
15 knots after midnight. waves calm to 2 feet. 
.saturday...south winds 5 to 15 knots backing southeast in the
afternoon. waves calm to 2 feet. 
.saturday night...east winds less than 10 knots becoming north
5 to 15 knots after midnight, then increasing to 15 to 25 knots
late. waves calm to 2 feet. 
.sunday...northeast winds 20 to 30 knots diminishing to 15 to
25 knots by mid afternoon. waves building to 3 to 5 feet
occasionally to 7 feet, then subsiding to 1 to 3 feet. 
.sunday night...northeast winds 10 to 20 knots veering east after
midnight. waves subsiding to calm to 2 feet, then building to
1 to 3 feet. 
.monday...east winds 5 to 15 knots. waves subsiding to calm to
2 feet. 
.monday night...east winds 5 to 15 knots. waves calm to 2 feet. 
.tuesday...east winds 5 to 15 knots veering southeast. waves calm
to 2 feet. 
.wednesday...southeast winds 5 to 15 knots veering south. waves
calm to 2 feet. 

$$

fzus63 kmqt 182001
glfls 
expires:202609190800;;672499

open lake forecast for lake superior
national weather service marquette mi
401 pm edt fri sep 18 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...

30.4 inch high pressure continues to track eastward, weakening to 
30.2 inches as it moves into western quebec saturday morning. 
meanwhile, 29.9 inch low pressure develops over the central plains, 
reaching western iowa by saturday morning as another 29.8 inch low 
tracks across hudson bay. saturday into sunday, a 30.2 inch high 
over the canadian prairie builds to 30.4 inches as it moves into 
northwestern ontario, creating a 30.2 inch ridging pattern over lake 
superior. this high pressure center slowly builds to 30.5 inches as 
it shifts into quebec by midday tuesday, trailing a 30.4 inch ridge 
over lake superior. the high builds further to 30.6 inches wednesday 
as it progresses eastward.




lsz265-190800-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
401 pm edt fri sep 18 2026

.late this afternoon...east winds 15 to 25 knots. waves 1 to
3 feet. 
.tonight...east winds 15 to 25 knots becoming southeast 10 to
20 knots after midnight. waves subsiding to calm to 2 feet. 
.saturday...southeast winds 10 to 20 knots backing east late.
waves calm to 2 feet. 
.saturday night...east winds 5 to 15 knots backing north after
midnight, then increasing to 15 to 25 knots late. waves calm to
2 feet. 
.sunday...northeast gales to 35 knots diminishing to 20 to
30 knots by mid afternoon. waves building to 3 to 5 feet
occasionally to 7 feet, then subsiding to 2 to 4 feet. 
.sunday night...northeast winds 20 to 30 knots becoming east
15 to 25 knots after midnight. waves building to 3 to 5 feet
occasionally to 7 feet. 
.monday...east winds 15 to 25 knots. waves subsiding to 1 to
3 feet. 
.monday night...east winds 10 to 20 knots. waves subsiding to
calm to 2 feet. 
.tuesday...east winds 10 to 20 knots veering southeast. waves
building to 1 to 3 feet, then subsiding to calm to 2 feet. 
.wednesday...east winds 10 to 20 knots becoming south 5 to
15 knots. waves calm to 2 feet. 

$$

fzus63 kmqt 182001
glfls 
expires:202609190800;;672500

open lake forecast for lake superior
national weather service marquette mi
401 pm edt fri sep 18 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...

30.4 inch high pressure continues to track eastward, weakening to 
30.2 inches as it moves into western quebec saturday morning. 
meanwhile, 29.9 inch low pressure develops over the central plains, 
reaching western iowa by saturday morning as another 29.8 inch low 
tracks across hudson bay. saturday into sunday, a 30.2 inch high 
over the canadian prairie builds to 30.4 inches as it moves into 
northwestern ontario, creating a 30.2 inch ridging pattern over lake 
superior. this high pressure center slowly builds to 30.5 inches as 
it shifts into quebec by midday tuesday, trailing a 30.4 inch ridge 
over lake superior. the high builds further to 30.6 inches wednesday 
as it progresses eastward.




lsz266-190800-
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-
401 pm edt fri sep 18 2026

.late this afternoon...east winds 5 to 15 knots. waves 1 to
3 feet subsiding to calm to 2 feet. 
.tonight...east winds 5 to 15 knots veering southeast after
midnight, then increasing to 10 to 20 knots late. waves calm to
2 feet. 
.saturday...southeast winds 10 to 20 knots becoming east 5 to
15 knots late. waves calm to 2 feet. 
.saturday night...east winds 5 to 15 knots backing north after
midnight, then increasing to 15 to 25 knots late. waves calm to
2 feet. 
.sunday...northeast winds 20 to 30 knots backing north by mid
afternoon. waves building to 3 to 5 feet occasionally to 7 feet,
then subsiding to 2 to 4 feet. 
.sunday night...northeast winds 15 to 25 knots veering east after
midnight. waves building to 3 to 5 feet occasionally to 7 feet. 
.monday...east winds 10 to 20 knots. waves subsiding to 1 to
3 feet. 
.monday night...east winds 5 to 15 knots. waves subsiding to calm
to 2 feet, then building to 1 to 3 feet. 
.tuesday...east winds 10 to 20 knots becoming southeast 5 to
15 knots. waves calm to 2 feet. 
.wednesday...east winds 5 to 15 knots veering southeast. waves
calm to 2 feet. 

$$

fzus63 kmqt 182001
glfls 
expires:202609190800;;672501

open lake forecast for lake superior
national weather service marquette mi
401 pm edt fri sep 18 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...

30.4 inch high pressure continues to track eastward, weakening to 
30.2 inches as it moves into western quebec saturday morning. 
meanwhile, 29.9 inch low pressure develops over the central plains, 
reaching western iowa by saturday morning as another 29.8 inch low 
tracks across hudson bay. saturday into sunday, a 30.2 inch high 
over the canadian prairie builds to 30.4 inches as it moves into 
northwestern ontario, creating a 30.2 inch ridging pattern over lake 
superior. this high pressure center slowly builds to 30.5 inches as 
it shifts into quebec by midday tuesday, trailing a 30.4 inch ridge 
over lake superior. the high builds further to 30.6 inches wednesday 
as it progresses eastward.




lsz267-190800-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
401 pm edt fri sep 18 2026

.late this afternoon...northeast winds 5 to 15 knots. waves calm
to 2 feet. 
.tonight...east winds 5 to 15 knots veering southeast after
midnight, then increasing to 10 to 20 knots late. waves calm to
2 feet. 
.saturday...southeast winds 10 to 20 knots becoming east 5 to
15 knots late. waves calm to 2 feet. 
.saturday night...east winds 5 to 15 knots backing north after
midnight. waves calm to 2 feet. 
.sunday...north winds 15 to 25 knots. waves building to 3 to
5 feet occasionally to 7 feet, then subsiding to 2 to 4 feet. 
.sunday night...northeast winds 15 to 25 knots veering east after
midnight. waves building to 3 to 5 feet occasionally to 7 feet,
then subsiding to 2 to 4 feet. 
.monday...east winds 5 to 15 knots backing northeast by mid
afternoon. waves subsiding to calm to 2 feet. 
.monday night...east winds 10 to 20 knots. waves building to 1 to
3 feet, then subsiding to calm to 2 feet. 
.tuesday...east winds 5 to 15 knots. waves calm to 2 feet. 
.wednesday...east winds 5 to 15 knots veering southeast. waves
calm to 2 feet. 

$$