fzus61 kbuf 080202
glflo 
expires:202609080900;;085237

open lake forecast for lake ontario
national weather service buffalo ny
1002 pm edt mon sep 7 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 30.2 inch high over the lower great lakes this evening 
will settle south toward the mid atlantic region through the 
overnight. this high will then drift to the eastern seaboard 
tuesday, then east of the mid atlantic coast by wednesday. 
meanwhile, a 29.3 inch low over far northwest ontario province 
tuesday night will move to hudson bay by late wednesday, then to 
northern quebec by thursday while deepening to 29.0 inches. a 
trailing cold front will cross the lower great lakes wednesday 
night, followed by a 30.0 inch high building east across the eastern 
great lakes region thursday through friday, before sliding east into 
new england by saturday.


loz063>065-080900-
lake ontario open waters from hamlin beach to the saint lawrence
river-
1002 pm edt mon sep 7 2026

.overnight...southwest winds 5 to 10 knots. waves 2 feet or
less. 
.tuesday...west winds 5 to 10 knots becoming northwest. waves
2 feet or less. 
.tuesday night...southeast winds 10 knots or less becoming south
10 to 15 knots. waves 2 feet or less. 
.wednesday...south winds 15 to 20 knots. a chance of showers in
the morning, then showers likely with a chance of thunderstorms
in the afternoon. waves 1 to 3 feet. 
.wednesday night...southwest winds 15 to 25 knots becoming west.
showers with a chance of thunderstorms in the evening, then
showers overnight. waves 3 to 6 feet. 
.thursday...west winds 15 to 20 knots becoming northwest. waves
3 to 6 feet. 
.friday...north winds 5 to 15 knots becoming south. waves 1 to
3 feet subsiding to 1 foot or less. 
.saturday...south winds 10 to 15 knots increasing to 15 to
20 knots. waves 1 to 3 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kbuf 080202
glflo 
expires:202609080900;;085236

open lake forecast for lake ontario
national weather service buffalo ny
1002 pm edt mon sep 7 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 30.2 inch high over the lower great lakes this evening 
will settle south toward the mid atlantic region through the 
overnight. this high will then drift to the eastern seaboard 
tuesday, then east of the mid atlantic coast by wednesday. 
meanwhile, a 29.3 inch low over far northwest ontario province 
tuesday night will move to hudson bay by late wednesday, then to 
northern quebec by thursday while deepening to 29.0 inches. a 
trailing cold front will cross the lower great lakes wednesday 
night, followed by a 30.0 inch high building east across the eastern 
great lakes region thursday through friday, before sliding east into 
new england by saturday.


loz062-080900-
lake ontario open waters from the niagara river to hamlin beach-
1002 pm edt mon sep 7 2026

.overnight...southwest winds 10 knots or less. waves 1 foot
or less. 
.tuesday...southwest winds 10 knots or less becoming east. waves
1 foot or less. 
.tuesday night...east winds 5 to 10 knots becoming south. a
chance of showers overnight. waves 1 foot or less. 
.wednesday...south winds 5 to 10 knots becoming southwest and
increasing to 15 to 20 knots. a chance of showers in the morning,
then showers likely with a chance of thunderstorms in the
afternoon. waves 1 to 3 feet building to 3 to 5 feet. 
.wednesday night...southwest winds 15 to 25 knots becoming west.
showers with a chance of thunderstorms in the evening, then
showers overnight. waves 3 to 6 feet. 
.thursday...west winds 10 to 15 knots becoming northwest. waves
2 to 4 feet subsiding to 1 to 3 feet. 
.friday...northwest winds 10 knots or less becoming south. waves
2 feet or less. 
.saturday...south winds 5 to 10 knots becoming southwest. waves
1 foot or less. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 080116
glfle 
expires:202609080830;;084322

open lake forecast for lake erie
national weather service cleveland oh
916 pm edt mon sep 7 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 will gradually weaken to 30.00 inches 
wednesday ahead of a cold front that will track across lake erie 
wednesday into wednesday night. a post frontal trough averaging 
29.90 inches lingers on thursday. high pressure builds back to 
30.10 inches friday and will remain into the weekend.


lez061-168-169-080830-
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-
916 pm edt mon sep 7 2026

.overnight...east winds 10 knots or less becoming
southeast. waves 1 foot or less. 
.tuesday...southeast winds less than 10 knots becoming northeast.
waves 1 foot or less. 
.tuesday night...east winds 5 to 15 knots becoming south 15 to
20 knots. waves 1 to 3 feet. 
.wednesday...south winds 15 to 20 knots becoming southwest.
showers likely in the afternoon. waves 2 to 4 feet building to
3 to 5 feet. 
.wednesday night...southwest winds 15 to 25 knots becoming west.
showers with a chance of thunderstorms in the evening, then
showers overnight. waves 3 to 6 feet. 
.thursday...west winds 5 to 15 knots becoming north. waves 2 to
4 feet subsiding to 1 to 3 feet. 
.friday...north winds 10 knots or less becoming south. waves
1 foot or less. 
.saturday...south winds 5 to 15 knots becoming southwest. a
chance of showers saturday night. waves 1 foot or less building
to 1 to 3 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 080116
glfle 
expires:202609080830;;084320

open lake forecast for lake erie
national weather service cleveland oh
916 pm edt mon sep 7 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 will gradually weaken to 30.00 inches 
wednesday ahead of a cold front that will track across lake erie 
wednesday into wednesday night. a post frontal trough averaging 
29.90 inches lingers on thursday. high pressure builds back to 
30.10 inches friday and will remain into the weekend.


lez162-163-080830-
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-
916 pm edt mon sep 7 2026

.overnight...east winds 5 to 10 knots becoming southeast.
waves 1 to 3 feet. 
.tuesday...southeast winds 5 to 10 knots becoming east. waves
1 foot or less. 
.tuesday night...southeast winds 10 to 15 knots becoming
southwest 15 to 20 knots. waves 1 to 3 feet. 
.wednesday...southwest winds 15 to 20 knots. a chance of showers
and thunderstorms in the afternoon. waves 1 to 3 feet. 
.wednesday night...southwest winds 15 to 20 knots becoming west
10 to 15 knots. a chance of showers and thunderstorms in the
evening, then a chance of showers overnight. waves 1 to 3 feet. 
.thursday...west winds 5 to 15 knots becoming north. waves 2 feet
or less. 
.friday...northeast winds 10 knots or less becoming south. waves
1 foot or less. 
.saturday...south winds 5 to 10 knots becoming west. waves 2 feet
or less. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 080116
glfle 
expires:202609080830;;084321

open lake forecast for lake erie
national weather service cleveland oh
916 pm edt mon sep 7 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 will gradually weaken to 30.00 inches 
wednesday ahead of a cold front that will track across lake erie 
wednesday into wednesday night. a post frontal trough averaging 
29.90 inches lingers on thursday. high pressure builds back to 
30.10 inches friday and will remain into the weekend.


lez164>167-080830-
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-
916 pm edt mon sep 7 2026

.overnight...east winds 5 to 15 knots becoming southeast.
waves 1 to 3 feet. 
.tuesday...southeast winds 10 knots or less becoming east. waves
1 foot or less. 
.tuesday night...east winds 5 to 15 knots becoming south 15 to
20 knots. waves 1 to 3 feet building to 2 to 4 feet. 
.wednesday...southwest winds 15 to 20 knots. a chance of showers
in the afternoon. waves 2 to 4 feet building to 3 to 5 feet. 
.wednesday night...southwest winds 15 to 20 knots becoming west.
a chance of showers and thunderstorms in the evening, then a
chance of showers overnight. waves 3 to 6 feet. 
.thursday...west winds 5 to 15 knots becoming northeast. waves
2 to 4 feet subsiding to 1 to 2 feet. 
.friday...northeast winds 10 knots or less becoming south. waves
1 foot or less. 
.saturday...south winds 5 to 15 knots becoming southwest. waves
1 to 3 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus63 kdtx 080142
glflh 
expires:202609080945;;084881

open lake forecast for lake huron
national weather service detroit/pontiac mi
942 pm edt mon sep 7 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...favorable marine conditions continue through most of
tuesday due to surface high pressure moving from the central to
eastern great lakes. a low pressure system then approaches
tuesday afternoon into wednesday with associated fronts leading
to rising heat/humidity and thunderstorm chances. cooler and
drier weather is expected thursday into friday.


lhz362-363-080945-
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-
942 pm edt mon sep 7 2026

.rest of tonight...southeast winds 5 to 10 knots. waves 2 feet or
less. 
.tuesday...light and variable winds becoming southeast 10 to
15 knots. waves 2 feet or less. 
.tuesday night...south winds 10 to 15 knots. a chance of showers
and thunderstorms after midnight. waves 1 to 3 feet building to
2 to 4 feet in the late evening and overnight. 
.wednesday...southwest winds 15 to 20 knots. gusts to 30 knots in
the late morning and afternoon. showers and a chance of
thunderstorms in the morning...then showers in the afternoon.
waves 4 to 6 feet. waves occasionally around 8 feet. 
.wednesday night...southwest winds 15 to 20 knots becoming west
10 to 15 knots in the late evening and overnight. waves 3 to
5 feet. 
.thursday...northwest winds 10 to 15 knots decreasing to 5 to
10 knots late in the evening. waves 3 to 5 feet. 
.friday...light and variable winds becoming south 5 to 10 knots
in the late morning and early afternoon...then increasing to
10 to 15 knots . waves 1 to 3 feet building to 2 to 4 feet by
midnight. 
.saturday...south winds 10 to 15 knots. a chance of showers early
in the evening. waves 2 to 4 feet. 


$$

fzus63 kdtx 080142
glflh 
expires:202609080945;;084882

open lake forecast for lake huron
national weather service detroit/pontiac mi
942 pm edt mon sep 7 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...favorable marine conditions continue through most of
tuesday due to surface high pressure moving from the central to
eastern great lakes. a low pressure system then approaches
tuesday afternoon into wednesday with associated fronts leading
to rising heat/humidity and thunderstorm chances. cooler and
drier weather is expected thursday into friday.


lhz462>464-080945-
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-
942 pm edt mon sep 7 2026

.rest of tonight...light and variable winds becoming southeast
5 to 10 knots after midnight. waves 2 feet or less. 
.tuesday...light and variable winds becoming southeast 5 to
10 knots in the late morning and afternoon. waves 2 feet or less.
.tuesday night...south winds 10 to 15 knots. a chance of showers
after midnight. waves 1 to 3 feet building to 2 to 4 feet in the
late evening and overnight. 
.wednesday...southwest winds 10 to 15 knots increasing to 15 to
20 knots early in the afternoon. showers in the morning...then
showers likely in the afternoon. waves 1 to 3 feet building to
2 to 4 feet in the late morning and afternoon. 
.wednesday night...southwest winds 15 to 20 knots becoming west
10 to 15 knots after midnight. waves 2 to 4 feet. 
.thursday...northwest winds 10 to 15 knots becoming north 5 to
10 knots late in the afternoon. waves 1 to 3 feet. 
.friday...northwest winds 5 to 10 knots backing to the west in
the late morning and early afternoon...then backing to the
southeast early in the evening becoming south 10 to 15 knots by
midnight. waves 2 feet or less. 
.saturday...south winds 10 to 15 knots. waves 1 to 3 feet. 


$$

fzus63 kdtx 080142
glflh 
expires:202609080945;;084880

open lake forecast for lake huron
national weather service detroit/pontiac mi
942 pm edt mon sep 7 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...favorable marine conditions continue through most of
tuesday due to surface high pressure moving from the central to
eastern great lakes. a low pressure system then approaches
tuesday afternoon into wednesday with associated fronts leading
to rising heat/humidity and thunderstorm chances. cooler and
drier weather is expected thursday into friday.


lhz361-080945-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
942 pm edt mon sep 7 2026

.rest of tonight...southeast winds 5 to 10 knots veering to the
south early in the morning. waves 2 feet or less. 
.tuesday...southeast winds 5 to 10 knots increasing to 10 to
15 knots late in the afternoon. waves 2 feet or less. 
.tuesday night...south winds 10 to 15 knots. a chance of showers.
waves 2 to 4 feet subsiding to 1 to 3 feet in the late evening
and overnight. 
.wednesday...southwest winds 10 to 15 knots becoming west 15 to
20 knots early in the afternoon. showers likely in the morning.
waves 1 to 3 feet building to 2 to 4 feet in the late morning and
afternoon. 
.wednesday night...west winds 10 to 15 knots increasing to 15 to
20 knots after midnight. waves 3 to 5 feet. 
.thursday...northwest winds 15 to 20 knots becoming light and
variable. waves 3 to 5 feet subsiding to 1 to 3 feet late in the
evening. 
.friday...light and variable winds becoming south 5 to 10 knots
until early evening...then increasing to 10 to 15 knots by
midnight. waves 2 feet or less. 
.saturday...southwest winds 10 to 15 knots veering to the west by
midnight. a chance of showers until early evening. waves 1 to
3 feet. 


$$

fzus63 kdtx 080142
glfsc 
expires:202609080945;;084884

lake st clair forecast
national weather service detroit/pontiac mi
942 pm edt mon sep 7 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...favorable marine conditions continue through most of
tuesday due to surface high pressure moving from the central to
eastern great lakes. a low pressure system then approaches
tuesday afternoon into wednesday with associated fronts leading
to rising heat/humidity and thunderstorm chances. cooler and
drier weather is expected thursday into friday.


lcz460-080945-
lake st clair-
942 pm edt mon sep 7 2026

.rest of tonight...east winds 5 to 10 knots. partly cloudy. waves 2
feet or less.
.tuesday...southeast winds 5 to 10 knots. partly sunny. waves 2 feet
or less.
.tuesday night...southeast winds 10 to 15 knots veering to the
southwest after midnight. partly cloudy. waves 2 feet or less.
.wednesday...southwest winds 10 to 15 knots. mostly cloudy. light
showers likely early in the afternoon. waves 2 feet or less.
.wednesday night...west winds 10 to 15 knots. mostly cloudy early in
the evening becoming partly cloudy. waves 2 feet or less.
.thursday...northwest winds 5 to 10 knots increasing to 10 to 15
knots in the afternoon and evening. partly cloudy then clearing.
waves 2 feet or less.
.friday...southeast winds 5 to 10 knots. clear. waves 2 feet or
less.
.saturday...southwest winds 10 to 15 knots. mostly clear. waves 2
feet or less.

$$

fzus63 kmkx 080148
glflm 
expires:202609080915;;084988

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
848 pm cdt mon sep 7 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 30.2 inches will remain over the lower great
lakes through tuesday. meanwhile, low pressure around 29.6 inches
over the northern high plains will lift northward through the 
canadian prairies into tuesday morning. this will allow for 
gradually increasing southerly winds overnight through tuesday 
night, especially over the north half of the lake. 

as low pressure enters hudson bay late tuesday night and 
wednesday, winds shift southwesterly, then westerly on wednesday 
as a cold front pushes southeastward through the lake. winds 
become northwesterly behind the front, gradually weakening through
thursday and thursday night. winds shift to southerly again and 
increase into friday, as low pressure develops in the northern 
plains.


lmz261-362-364-366-563-565-567-868-080915-
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-
848 pm cdt mon sep 7 2026

sheboygan wi to pentwater mi north...

.rest of tonight...south winds 5 to 10 kt increasing to 10 to
20 kt. waves 1 to 3 ft. 
.tuesday...south winds 10 to 20 kt increasing to 30 kt. slight
chance of showers in the morning, then chance of showers and
slight chance of thunderstorms in the afternoon. waves 3 to 5 ft.
.tuesday night...south winds to 30 kt becoming southwest. chance
of showers and thunderstorms in the evening, then showers likely
with a chance of thunderstorms overnight. waves 4 to 6 ft
occasionally to 8 ft. 
.wednesday...southwest winds to 30 kt. a few gales to 35 kt. 
chance of showers and thunderstorms in the morning. waves 4 to 6 
ft occasionally to 8 ft. 
.wednesday night...west winds to 30 kt becoming northwest. waves
4 to 6 ft occasionally to 8 ft. 
.thursday...northwest winds 10 to 20 kt. waves 2 to 4 ft. 
.thursday night...southwest winds 10 to 15 kt becoming south.
waves 1 to 2 ft. 
.friday...south winds 15 to 25 kt increasing to gales to 35 kt.
waves 1 to 3 ft building to 4 to 6 ft occasionally to 8 ft. 
.saturday...southwest winds to 30 kt. waves 4 to 6 ft
occasionally to 8 ft.  

$$

fzus63 kmkx 080148
glflm 
expires:202609080915;;084989

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
848 pm cdt mon sep 7 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 30.2 inches will remain over the lower great
lakes through tuesday. meanwhile, low pressure around 29.6 inches
over the northern high plains will lift northward through the 
canadian prairies into tuesday morning. this will allow for 
gradually increasing southerly winds overnight through tuesday 
night, especially over the north half of the lake. 

as low pressure enters hudson bay late tuesday night and 
wednesday, winds shift southwesterly, then westerly on wednesday 
as a cold front pushes southeastward through the lake. winds 
become northwesterly behind the front, gradually weakening through
thursday and thursday night. winds shift to southerly again and 
increase into friday, as low pressure develops in the northern 
plains.


lmz080-669-671-673-675-777-779-870-872-874-876-878-080915-
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-
848 pm cdt mon sep 7 2026

sheboygan wi to pentwater mi south...

.rest of tonight...east winds 10 to 15 kt becoming southeast
10 to 20 kt. waves 2 to 4 ft. 
.tuesday...south winds 10 to 20 kt. waves 3 to 5 ft. 
.tuesday night...south winds 10 to 20 kt becoming southwest.
chance of showers and thunderstorms overnight. waves 3 to 5 ft.
.wednesday...southwest winds 15 to 25 kt. showers likely in the
morning, then chance of showers in the afternoon. waves 4 to 6 ft
occasionally to 8 ft. 
.wednesday night...west winds 15 to 25 kt becoming northwest.
waves 3 to 5 ft. 
.thursday...northwest winds 10 to 20 kt becoming north. waves
2 to 4 ft. 
.thursday night...north winds 5 to 10 kt veering to southeast
10 to 15 kt. waves 1 to 3 ft. 
.friday...south winds 10 to 20 kt increasing to 15 to 25 kt.
waves 1 to 3 ft building to 3 to 5 ft. 
.saturday...southwest winds 15 to 25 kt. waves 4 to 6 ft
occasionally to 8 ft.  

$$

fzus63 kmqt 080201
glfls 
expires:202609080800;;085197

open lake forecast for lake superior
national weather service marquette mi
1000 pm edt mon sep 7 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...

ridging of 30.1 inches persists over lake superior into tonight as a 
30.4 inch high crosses far northern ontario. meanwhile, a 29.5 inch 
low developing tracks northeast to the canadian prairies before 
approaching hudson bay and deepening to 29.1 inches by wednesday 
afternoon. this sends a 29.7 inch trough over the lake tuesday night 
and wednesday. ridging of 29.9 to 30.0 inches returns on thursday, 
followed by another trough of 29.6 to 29.7 inches on friday.




lsz264-080800-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
1000 pm edt mon sep 7 2026

...gale watch in effect from wednesday morning through wednesday
evening...

.rest of tonight...southeast winds 10 to 20 knots veering south
after midnight. a chance of showers after midnight. waves 1 to
3 feet building to 2 to 4 feet. 
.tuesday...south winds 20 to 30 knots increasing to 30 knots with
a few gale force gusts to 35 knots possible in the afternoon,
then diminishing to 20 to 30 knots late. showers and a slight
chance of thunderstorms through early afternoon, then a slight
chance of showers by mid afternoon. waves building to 5 to 8 feet
occasionally to 10 feet, then subsiding to 3 to 6 feet
occasionally to 8 feet. 
.tuesday night...south winds 15 to 25 knots becoming southwest
20 to 30 knots after midnight. a slight chance of showers through
midnight. waves subsiding to 3 to 6 feet occasionally to 8 feet. 
.wednesday...west gales to 45 knots. waves building to 8 to
12 feet occasionally to 15 feet. 
.wednesday night...northwest gales to 40 knots diminishing to
20 to 30 knots after midnight. waves subsiding to 3 to 5 feet
occasionally to 7 feet. 
.thursday...northwest winds 10 to 20 knots becoming southwest
5 to 15 knots by mid afternoon. waves subsiding to calm to
2 feet. 
.thursday night...south winds 5 to 15 knots increasing to 15 to
25 knots after midnight. waves building to 1 to 3 feet. 
.friday...south winds 20 to 30 knots becoming southwest 15 to
25 knots. a chance of showers. waves building to 3 to 5 feet
occasionally to 7 feet. 
.saturday...west gales to 35 knots. waves building to 4 to 7 feet
occasionally to 9 feet, then subsiding to 2 to 4 feet. 

$$

fzus63 kmqt 080201
glfls 
expires:202609080800;;085198

open lake forecast for lake superior
national weather service marquette mi
1000 pm edt mon sep 7 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...

ridging of 30.1 inches persists over lake superior into tonight as a 
30.4 inch high crosses far northern ontario. meanwhile, a 29.5 inch 
low developing tracks northeast to the canadian prairies before 
approaching hudson bay and deepening to 29.1 inches by wednesday 
afternoon. this sends a 29.7 inch trough over the lake tuesday night 
and wednesday. ridging of 29.9 to 30.0 inches returns on thursday, 
followed by another trough of 29.6 to 29.7 inches on friday.




lsz265-080800-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
1000 pm edt mon sep 7 2026

...gale watch in effect from wednesday morning through late
wednesday night...

.rest of tonight...southeast winds 20 to 30 knots becoming south
15 to 25 knots after midnight. a chance of showers after
midnight. waves 2 to 4 feet subsiding to 1 to 3 feet. 
.tuesday...south winds to 30 knots with a few gale force gusts to
35 knots possible. showers through early afternoon. a chance of
thunderstorms. a chance of showers by mid afternoon. waves
building to 4 to 7 feet occasionally to 9 feet, then subsiding to
3 to 5 feet occasionally to 7 feet. 
.tuesday night...south winds 20 to 30 knots veering southwest
after midnight, then becoming west 15 to 25 knots late. a slight
chance of showers through midnight. waves subsiding to 1 to
3 feet, then building to 2 to 4 feet. 
.wednesday...west gales to 45 knots. waves building to 7 to
10 feet occasionally to 13 feet. 
.wednesday night...west gales to 40 knots becoming northwest
gales to 35 knots after midnight. waves subsiding to 3 to 5 feet
occasionally to 7 feet. 
.thursday...northwest winds 20 to 30 knots diminishing to 10 to
20 knots by mid afternoon. waves subsiding to calm to 2 feet. 
.thursday night...south winds 5 to 15 knots increasing to 15 to
25 knots after midnight. waves calm to 2 feet. 
.friday...south winds 20 to 30 knots veering southwest. showers
likely. waves building to 2 to 4 feet. 
.saturday...west gales to 35 knots diminishing to 20 to 30 knots.
waves building to 3 to 6 feet occasionally to 8 feet. 

$$

fzus63 kmqt 080201
glfls 
expires:202609080800;;085195

open lake forecast for lake superior
national weather service marquette mi
1000 pm edt mon sep 7 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...

ridging of 30.1 inches persists over lake superior into tonight as a 
30.4 inch high crosses far northern ontario. meanwhile, a 29.5 inch 
low developing tracks northeast to the canadian prairies before 
approaching hudson bay and deepening to 29.1 inches by wednesday 
afternoon. this sends a 29.7 inch trough over the lake tuesday night 
and wednesday. ridging of 29.9 to 30.0 inches returns on thursday, 
followed by another trough of 29.6 to 29.7 inches on friday.




lsz162-080800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1000 pm edt mon sep 7 2026 /900 pm cdt mon sep 7 2026/

...gale watch in effect from wednesday morning through wednesday
afternoon...

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

$$

fzus63 kmqt 080201
glfls 
expires:202609080800;;085200

open lake forecast for lake superior
national weather service marquette mi
1000 pm edt mon sep 7 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...

ridging of 30.1 inches persists over lake superior into tonight as a 
30.4 inch high crosses far northern ontario. meanwhile, a 29.5 inch 
low developing tracks northeast to the canadian prairies before 
approaching hudson bay and deepening to 29.1 inches by wednesday 
afternoon. this sends a 29.7 inch trough over the lake tuesday night 
and wednesday. ridging of 29.9 to 30.0 inches returns on thursday, 
followed by another trough of 29.6 to 29.7 inches on friday.




lsz267-080800-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
1000 pm edt mon sep 7 2026

...gale watch in effect from wednesday afternoon through late
wednesday night...

.rest of tonight...south winds 10 to 20 knots backing southeast
after midnight. waves calm to 2 feet. 
.tuesday...south winds 15 to 25 knots increasing to 20 to
30 knots late. a chance of showers through early afternoon, then
showers likely and a slight chance of thunderstorms by mid
afternoon. waves building to 3 to 6 feet occasionally to 8 feet. 
.tuesday night...south winds 20 to 30 knots veering southwest
late. a chance of showers and a slight chance of thunderstorms.
waves subsiding to 2 to 4 feet. 
.wednesday...west winds 15 to 25 knots increasing to gales to
40 knots by mid afternoon. a slight chance of showers through
early afternoon. waves building to 9 to 12 feet occasionally to
15 feet. 
.wednesday night...west gales to 40 knots becoming northwest
gales to 35 knots after midnight. waves building to 10 to 14 feet
occasionally to 18 feet, then subsiding to 7 to 10 feet
occasionally to 13 feet. 
.thursday...northwest winds 15 to 25 knots diminishing to 10 to
20 knots by mid afternoon. waves subsiding to 2 to 4 feet. 
.thursday night...west winds 5 to 15 knots backing south after
midnight. waves subsiding to calm to 2 feet. 
.friday...south winds 15 to 25 knots increasing to 20 to
30 knots. a chance of showers. waves building to 3 to 6 feet
occasionally to 8 feet. 
.saturday...west winds 20 to 30 knots diminishing to 15 to
25 knots. a chance of showers. waves subsiding to 3 to 5 feet
occasionally to 7 feet. 

$$

fzus63 kmqt 080201
glfls 
expires:202609080800;;085199

open lake forecast for lake superior
national weather service marquette mi
1000 pm edt mon sep 7 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...

ridging of 30.1 inches persists over lake superior into tonight as a 
30.4 inch high crosses far northern ontario. meanwhile, a 29.5 inch 
low developing tracks northeast to the canadian prairies before 
approaching hudson bay and deepening to 29.1 inches by wednesday 
afternoon. this sends a 29.7 inch trough over the lake tuesday night 
and wednesday. ridging of 29.9 to 30.0 inches returns on thursday, 
followed by another trough of 29.6 to 29.7 inches on friday.




lsz266-080800-
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-
1000 pm edt mon sep 7 2026

...gale warning in effect from tuesday afternoon through tuesday
evening...
...gale watch in effect from wednesday afternoon through late
wednesday night...

.rest of tonight...south winds 15 to 25 knots. a slight chance of
showers after midnight. waves 1 to 3 feet building to 2 to
4 feet. 
.tuesday...south winds 20 to 30 knots increasing to gales to
40 knots in the afternoon. showers through early afternoon. a
slight chance of thunderstorms. a chance of showers by mid
afternoon. waves building to 4 to 8 feet occasionally to 10 feet.
.tuesday night...south gales to 35 knots diminishing to 20 to
30 knots after midnight, then becoming southwest 15 to 25 knots
late. a slight chance of thunderstorms through midnight. a slight
chance of showers. waves subsiding to 3 to 5 feet occasionally to
7 feet. 
.wednesday...west gales to 40 knots. waves building to 9 to
12 feet occasionally to 15 feet. 
.wednesday night...west gales to 40 knots becoming northwest
gales to 35 knots after midnight. waves subsiding to 5 to 8 feet
occasionally to 10 feet. 
.thursday...northwest winds 15 to 25 knots diminishing to 10 to
20 knots by mid afternoon. waves subsiding to 1 to 3 feet. 
.thursday night...south winds 5 to 15 knots increasing to 15 to
25 knots after midnight. waves subsiding to calm to 2 feet, then
building to 1 to 3 feet. 
.friday...south gales to 35 knots veering southwest. a chance of
showers. waves building to 3 to 6 feet occasionally to 8 feet. 
.saturday...west winds 20 to 30 knots. waves subsiding to 3 to
5 feet occasionally to 7 feet. 

$$

fzus63 kmqt 080201
glfls 
expires:202609080800;;085196

open lake forecast for lake superior
national weather service marquette mi
1000 pm edt mon sep 7 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...

ridging of 30.1 inches persists over lake superior into tonight as a 
30.4 inch high crosses far northern ontario. meanwhile, a 29.5 inch 
low developing tracks northeast to the canadian prairies before 
approaching hudson bay and deepening to 29.1 inches by wednesday 
afternoon. this sends a 29.7 inch trough over the lake tuesday night 
and wednesday. ridging of 29.9 to 30.0 inches returns on thursday, 
followed by another trough of 29.6 to 29.7 inches on friday.




lsz263-080800-
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-
1000 pm edt mon sep 7 2026

...gale watch in effect from wednesday morning through wednesday
evening...

.rest of tonight...southeast winds 10 to 20 knots veering south
after midnight, then increasing to 20 to 30 knots late. showers
and a slight chance of thunderstorms after midnight. waves calm
to 2 feet building to 2 to 4 feet. 
.tuesday...south winds to 30 knots with a few gale force gusts to
35 knots possible diminishing to 15 to 25 knots late. showers and
a chance of thunderstorms through early afternoon, then a slight
chance of showers by mid afternoon. waves building to 4 to 7 feet
occasionally to 9 feet, then subsiding to 2 to 4 feet. 
.tuesday night...southwest winds 20 to 30 knots veering west
late. a slight chance of showers through midnight. waves building
to 3 to 6 feet occasionally to 8 feet. 
.wednesday...west gales to 45 knots. waves building to 7 to
11 feet occasionally to 14 feet. 
.wednesday night...west gales to 40 knots becoming northwest
20 to 30 knots after midnight. waves subsiding to 2 to 4 feet. 
.thursday...northwest winds 10 to 20 knots backing southwest by
mid afternoon. waves subsiding to calm to 2 feet. 
.thursday night...south winds 10 to 20 knots increasing to 20 to
30 knots after midnight. waves building to 2 to 4 feet. 
.friday...southwest gales to 40 knots diminishing to 20 to
30 knots. a chance of showers and thunderstorms. waves building
to 3 to 6 feet occasionally to 8 feet, then subsiding to 2 to
4 feet. 
.saturday...west gales to 35 knots diminishing to 20 to 30 knots.
waves building to 3 to 6 feet occasionally to 8 feet, then
subsiding to 2 to 4 feet. 

$$