fzus61 kbuf 062002
glflo 
expires:202609070300;;016712

open lake forecast for lake ontario
national weather service buffalo ny
402 pm edt sun sep 6 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 will settle over the central great 
lakes tonight and the lower great lakes monday. 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. a 30.0 inch high will build across the eastern 
great lakes region thursday through friday.


loz063>065-070300-
lake ontario open waters from hamlin beach to the saint lawrence
river-
402 pm edt sun sep 6 2026

.tonight...north winds 5 to 15 knots. waves 2 feet or less. 
.monday...northwest winds 10 knots or less becoming west 10 to
15 knots. waves 2 feet or less. 
.monday night...west winds 5 to 15 knots. waves 2 feet or less. 
.tuesday...northwest winds 10 knots or less becoming northeast.
waves 1 foot or less. 
.tuesday night...east winds 5 to 15 knots becoming south. waves
2 feet or less. 
.wednesday...south winds 15 to 25 knots becoming southwest.
showers. waves 1 to 3 feet building to 4 to 7 feet, then
subsiding to 3 to 6 feet. waves occasionally around 9 feet. 
.thursday...west winds 15 to 25 knots becoming northwest. a
chance of showers during the day. waves 4 to 7 feet subsiding to
3 to 5 feet. waves occasionally around 9 feet. 
.friday...northwest winds 5 to 15 knots becoming south. waves
2 to 4 feet subsiding to 1 to 3 feet. 

$$

fzus61 kbuf 062002
glflo 
expires:202609070300;;016711

open lake forecast for lake ontario
national weather service buffalo ny
402 pm edt sun sep 6 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 will settle over the central great 
lakes tonight and the lower great lakes monday. 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. a 30.0 inch high will build across the eastern 
great lakes region thursday through friday.


loz062-070300-
lake ontario open waters from the niagara river to hamlin beach-
402 pm edt sun sep 6 2026

.tonight...east winds less than 10 knots. waves 1 foot or less. 
.monday...northwest winds 10 knots or less becoming west. waves
1 foot or less. 
.monday night...southwest winds 10 knots or less becoming west.
waves 1 foot or less. 
.tuesday...west winds less than 10 knots. waves 1 foot or less. 
.tuesday night...east winds 5 to 10 knots becoming south. waves
1 foot or less. 
.wednesday...southwest winds 15 to 25 knots becoming west.
showers likely. waves 1 to 3 feet building to 4 to 7 feet, then
subsiding to 3 to 6 feet. waves occasionally around 9 feet. 
.thursday...west winds 15 to 20 knots becoming northwest 10 to
15 knots. waves 3 to 5 feet subsiding to 2 to 4 feet. 
.friday...northwest winds 5 to 10 knots becoming south. waves
1 to 3 feet. 

$$

fzus61 kcle 061952
glfle 
expires:202609070215;;016303

open lake forecast for lake erie
national weather service cleveland oh
352 pm edt sun sep 6 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 persist into tuesday. low 
pressure 29.30 inches will move east near hudson bay on wednesday,
extending a cold front across lake erie wednesday night. this
front will remain just south of the lake thursday before high
pressure 30.00 inches returns friday.


lez162-163-070215-
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-
352 pm edt sun sep 6 2026

.tonight...east winds 10 to 15 knots becoming northeast. a slight
chance of waterspouts from late evening on. waves 1 to 3 feet. 
.monday...east winds 10 to 15 knots. a slight chance of
waterspouts through early afternoon. waves 1 to 2 feet. 
.monday night...east winds 5 to 15 knots becoming southeast.
waves 2 feet or less. 
.tuesday...southeast winds 5 to 10 knots. 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 becoming west 10 to
15 knots. a chance of showers during the day. waves 1 to 3 feet
building to 2 to 4 feet, then subsiding to 1 to 3 feet. 
.thursday...west winds 5 to 15 knots becoming north. waves 1 to
2 feet. 
.friday...north winds 10 knots or less becoming south. waves
1 foot or less. 

$$

fzus61 kcle 061952
glfle 
expires:202609070215;;016304

open lake forecast for lake erie
national weather service cleveland oh
352 pm edt sun sep 6 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 persist into tuesday. low 
pressure 29.30 inches will move east near hudson bay on wednesday,
extending a cold front across lake erie wednesday night. this
front will remain just south of the lake thursday before high
pressure 30.00 inches returns friday.


lez164>167-070215-
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-
352 pm edt sun sep 6 2026

.tonight...northeast winds 10 to 15 knots becoming east. a slight
chance of waterspouts late. waves 1 to 3 feet. 
.monday...east winds 5 to 15 knots becoming northeast. a slight
chance of waterspouts through early afternoon. waves 1 to 2 feet.
.monday night...east winds 5 to 15 knots becoming southeast.
waves 1 to 2 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 25 knots becoming west. a
chance of showers. waves 3 to 5 feet building to 4 to 7 feet,
then subsiding to 3 to 6 feet. waves occasionally around 9 feet. 
.thursday...west winds 10 to 15 knots becoming north. waves 2 to
4 feet subsiding to 1 to 3 feet. 
.friday...north winds 5 to 15 knots becoming south. waves 2 feet
or less. 

$$

fzus61 kcle 061952
glfle 
expires:202609070215;;016305

open lake forecast for lake erie
national weather service cleveland oh
352 pm edt sun sep 6 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 persist into tuesday. low 
pressure 29.30 inches will move east near hudson bay on wednesday,
extending a cold front across lake erie wednesday night. this
front will remain just south of the lake thursday before high
pressure 30.00 inches returns friday.


lez061-168-169-070215-
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-
352 pm edt sun sep 6 2026

.tonight...northeast winds 5 to 15 knots becoming east. waves
1 to 3 feet. 
.monday...east winds 5 to 10 knots becoming northeast. a slight
chance of waterspouts. waves 1 foot or less. 
.monday night...northeast winds 10 knots or less becoming
southeast. waves 1 foot or less. 
.tuesday...southeast winds less than 10 knots becoming east.
waves 1 foot or less. 
.tuesday night...east winds 5 to 15 knots becoming south. waves
1 to 3 feet. 
.wednesday...southwest winds 15 to 25 knots. a chance of showers
during the day, then showers likely wednesday night. waves 3 to
6 feet building to 4 to 7 feet, then subsiding to 3 to 6 feet.
waves occasionally around 9 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 to
2 feet. 

$$

fzus63 kdtx 061958
glfsc 
expires:202609070400;;016435

lake st clair forecast
national weather service detroit/pontiac mi
358 pm edt sun sep 6 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 monday 
and part of tuesday as high pressure lingers over the central 
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.


lcz460-070400-
lake st clair-
358 pm edt sun sep 6 2026

.tonight...northeast winds 10 to 15 knots diminishing to 5 to 10
knots after midnight. mostly clear. waves 2 feet or less.
.monday...east winds 5 to 10 knots veering to the southeast late in
the afternoon. mostly sunny. waves 2 feet or less.
.monday night...east winds 5 to 10 knots. mostly clear. waves 2 feet
or less.
.tuesday...southeast winds 5 to 10 knots becoming south 10 to 15
knots early in the afternoon. partly sunny. waves 2 feet or less.
.tuesday night...south winds 10 to 15 knots. partly cloudy becoming
mostly cloudy by midnight becoming partly cloudy. waves 2 feet or
less.
.wednesday...southwest winds 15 to 20 knots. gusts to 30 knots in
the afternoon. mostly cloudy with a chance of light showers. waves 1
to 3 feet. a small craft advisory may be needed.
.thursday...northwest winds 10 to 15 knots. partly cloudy. waves 2
feet or less.
.friday...south winds 5 to 10 knots. mostly clear. waves 2 feet or
less.

$$

fzus63 kdtx 061957
glflh 
expires:202609070400;;016428

open lake forecast for lake huron
national weather service detroit/pontiac mi
357 pm edt sun sep 6 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 monday 
and part of tuesday as high pressure lingers over the central 
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>464-070400-
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-
357 pm edt sun sep 6 2026

.tonight...north winds 10 to 15 knots becoming northeast 5 to
10 knots by midnight...then veering to the east early in the
morning. waves 1 to 3 feet. 
.monday...light and variable winds. waves 2 feet or less. 
.monday night...light and variable winds becoming northeast 5 to
10 knots by midnight...then veering to the southeast after
midnight. waves 2 feet or less. 
.tuesday...southeast winds 5 to 10 knots. waves 2 feet or less. 
.tuesday night...south winds 10 to 15 knots. showers likely after
midnight. waves 1 to 3 feet. 
.wednesday...south winds 10 to 15 knots becoming southwest 15 to
20 knots with gusts to 35 knot gales late in the morning...then
becoming west 10 to 15 knots late in the evening. showers...then
a chance of showers late in the afternoon. waves 3 to 5 feet. 
.thursday...northwest winds 10 to 15 knots veering to the north
by midnight. waves 1 to 3 feet building to 2 to 4 feet by
midnight. 
.friday...west winds 5 to 10 knots backing to the south early in
the evening...then increasing to 10 to 15 knots by midnight.
waves 1 to 3 feet. 


$$

fzus63 kdtx 061957
glflh 
expires:202609070400;;016427

open lake forecast for lake huron
national weather service detroit/pontiac mi
357 pm edt sun sep 6 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 monday 
and part of tuesday as high pressure lingers over the central 
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.


lhz362-363-070400-
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-
357 pm edt sun sep 6 2026

.tonight...light and variable winds. waves 2 feet or less. 
.monday...light and variable winds. waves 2 feet or less. 
.monday night...light and variable winds becoming southeast 5 to
10 knots in the late evening and overnight. waves 2 feet or less.
.tuesday...southeast winds 5 to 10 knots increasing to 10 to
15 knots early in the afternoon. waves 2 feet or less. 
.tuesday night...south winds 10 to 15 knots. a chance of showers
in the evening...then showers after midnight. waves 2 to 4 feet. 
.wednesday...south winds 15 to 20 knots with gusts to around
30 knots becoming southwest 20 to 25 knots with gusts to 35 knot
gales late in the morning...then decreasing to 15 to 20 knots
with gusts to 35 knot gales late in the afternoon becoming west
10 to 15 knots late in the evening. showers in the morning. rain
showers likely late in the morning. waves 5 to 7 feet. waves
occasionally around 10 feet. 
.thursday...west winds 10 to 15 knots becoming northwest 15 to
20 knots with gusts to around 30 knots in the late morning and
early afternoon...then decreasing to 10 to 15 knots . waves 3 to
5 feet. 
.friday...west winds 5 to 10 knots becoming south 10 to 15 knots
. waves 1 to 3 feet. 


$$

fzus63 kdtx 061957
glflh 
expires:202609070400;;016426

open lake forecast for lake huron
national weather service detroit/pontiac mi
357 pm edt sun sep 6 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 monday 
and part of tuesday as high pressure lingers over the central 
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.


lhz361-070400-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
357 pm edt sun sep 6 2026

.tonight...light and variable winds. waves nearly calm. 
.monday...light and variable winds. waves nearly calm. 
.monday night...southeast winds 5 to 10 knots veering to the
south after midnight. waves 2 feet or less. 
.tuesday...southeast winds 5 to 10 knots increasing to 10 to
15 knots early in the afternoon. waves 1 to 3 feet. 
.tuesday night...south winds 10 to 15 knots. showers likely.
waves 2 to 4 feet subsiding to 1 to 3 feet after midnight. 
.wednesday...south winds 10 to 15 knots becoming west 15 to
20 knots with gusts to 35 knot gales. a chance of showers. waves
3 to 5 feet. 
.thursday...west winds 15 to 20 knots with gusts to around
30 knots becoming northwest 5 to 10 knots. waves 3 to 5 feet
subsiding to 1 to 3 feet by midnight. 
.friday...west winds 5 to 10 knots backing to the south until
early evening...then increasing to 10 to 15 knots by midnight.
waves 2 feet or less. 


$$

fzus63 kmkx 061938
glflm 
expires:202609070315;;015825

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
238 pm cdt sun sep 6 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 30.1 inches over the northern great lakes 
will slowly shift to the lower great lakes for monday. light and 
variable winds are forecast through this period. 

increasing south to southwest winds are expected tuesday into 
wednesday, shifting west to northwest wednesday night into 
thursday, as a cold front moves toward and through the region. 
cannot rule out a few isolated gales across far northern lake
michigan on wednesday. 


lmz080-669-671-673-675-777-779-870-872-874-876-878-070315-
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-
238 pm cdt sun sep 6 2026

sheboygan wi to pentwater mi south...

.tonight...north winds 10 to 15 kt veering to southeast 10 to 15 
kt. waves 1 to 3 ft. 
.monday...southeast winds 10 to 15 kt becoming east. waves 1 to
2 ft. 
.monday night...east winds 10 to 15 kt becoming southeast 10 to
20 kt. waves 1 to 2 ft building to 2 to 4 ft. 
.tuesday...south winds 15 to 25 kt. waves 3 to 5 ft building to
4 to 7 ft occasionally to 9 ft. 
.tuesday night...south winds 15 to 25 kt becoming southwest.
chance of showers in the evening, then showers overnight. waves
5 to 8 ft occasionally to 10 ft. 
.wednesday...southwest winds to 30 kt. showers likely in the
morning. waves 4 to 7 ft occasionally to 9 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 4 to 6 ft
occasionally to 8 ft. 
.friday...southwest winds 10 to 20 kt becoming south 15 to 25 kt.
waves 1 to 3 ft.  

$$

fzus63 kmkx 061938
glflm 
expires:202609070315;;015824

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
238 pm cdt sun sep 6 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 30.1 inches over the northern great lakes 
will slowly shift to the lower great lakes for monday. light and 
variable winds are forecast through this period. 

increasing south to southwest winds are expected tuesday into 
wednesday, shifting west to northwest wednesday night into 
thursday, as a cold front moves toward and through the region. 
cannot rule out a few isolated gales across far northern lake
michigan on wednesday. 


lmz261-362-364-366-563-565-567-868-070315-
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-
238 pm cdt sun sep 6 2026

sheboygan wi to pentwater mi north...

.tonight...northeast winds 10 to 15 kt becoming east 5 to 10 kt 
late this evening, then becoming southeast after midnight becoming
south late. waves 1 to 2 ft. 
.monday...south winds 5 to 10 kt becoming southwest. waves 1 to
2 ft. 
.monday night...south winds 5 to 10 kt increasing to 10 to 20 kt.
waves 1 to 2 ft building to 2 to 4 ft. 
.tuesday...south winds 15 to 25 kt increasing to 30 kt. chance of
showers in the afternoon. waves 3 to 5 ft building to 5 to 8 ft
occasionally to 10 ft. 
.tuesday night...south winds to 30 kt becoming southwest. showers
likely in the evening, then showers overnight. waves 5 to 8 ft
occasionally to 10 ft. 
.wednesday...southwest winds to 30 kt. showers in the morning. 
waves 4 to 7 ft occasionally to 9 ft. 
.wednesday night...west winds to 30 kt becoming northwest to 30 
kt. waves 4 to 6 ft occasionally to 8 ft. 
.thursday...northwest winds 15 to 25 kt. waves 3 to 5 ft
subsiding to 2 to 4 ft. 
.friday...southwest winds 15 to 25 kt becoming south to 30 kt.
waves 2 to 4 ft.  

$$

fzus63 kmqt 062001
glfls 
expires:202609070800;;016568

open lake forecast for lake superior
national weather service marquette mi
401 pm edt sun sep 6 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 through tonight 
and then briefly builds to 30.2 inches on monday as 30.4 inch high 
pressure crosses far northern ontario. meanwhile, a 29.6 inch low 
develops off the northern rockies by monday morning and then tracks 
northeast to hudson bay, deepening to 29.2 inches by wednesday 
afternoon. this sends a 29.6 to 29.7 inch trough over lake superior 
tuesday night and wednesday. weak ridging of 29.9 inches returns 
over the lake on thursday, followed by another trough ranging from 
29.5 to 29.7 inches on friday.




lsz162-070800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
401 pm edt sun sep 6 2026 /301 pm cdt sun sep 6 2026/

.late this afternoon...northeast winds 5 to 15 knots. waves calm
to 2 feet. 
.tonight...northeast winds 5 to 15 knots. waves calm to 2 feet. 
.monday...east winds 5 to 15 knots increasing to 15 to 25 knots
late. a slight chance of showers. waves building to 1 to 3 feet. 
.monday night...east winds 15 to 25 knots veering southeast after
midnight, then becoming south 20 to 30 knots late. a chance of
showers through midnight, then showers and a slight chance of
thunderstorms after midnight. waves building to 2 to 4 feet, then
subsiding to 1 to 3 feet. 
.tuesday...south winds 20 to 30 knots. showers likely and a
slight chance of thunderstorms through early afternoon. waves
subsiding to 2 to 4 feet. 
.tuesday night...southwest winds 20 to 30 knots. waves building
to 3 to 6 feet occasionally to 8 feet. 
.wednesday...west gales to 40 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...southwest winds 10 to 20 knots. waves calm to 2 feet.
.friday...southwest winds 20 to 30 knots becoming west 15 to
25 knots. waves building to 2 to 4 feet, then subsiding to 1 to
3 feet. 

$$

fzus63 kmqt 062001
glfls 
expires:202609070800;;016569

open lake forecast for lake superior
national weather service marquette mi
401 pm edt sun sep 6 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 through tonight 
and then briefly builds to 30.2 inches on monday as 30.4 inch high 
pressure crosses far northern ontario. meanwhile, a 29.6 inch low 
develops off the northern rockies by monday morning and then tracks 
northeast to hudson bay, deepening to 29.2 inches by wednesday 
afternoon. this sends a 29.6 to 29.7 inch trough over lake superior 
tuesday night and wednesday. weak ridging of 29.9 inches returns 
over the lake on thursday, followed by another trough ranging from 
29.5 to 29.7 inches on friday.




lsz263-070800-
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 sun sep 6 2026

.late this afternoon...east winds 5 to 15 knots. waves calm to
2 feet. 
.tonight...east winds 5 to 15 knots. waves calm to 2 feet. 
.monday...east winds 5 to 15 knots increasing to 10 to 20 knots
late. a slight chance of showers through early afternoon. waves
building to 1 to 3 feet. 
.monday night...east winds 10 to 20 knots becoming southeast
20 to 30 knots after midnight, then becoming south to 30 knots
with a few gale force gusts to 35 knots possible late. a chance
of showers through midnight, then showers and a slight chance of
thunderstorms after midnight. waves building to 3 to 6 feet
occasionally to 8 feet. 
.tuesday...south gales to 35 knots. showers through early
afternoon. a slight chance of thunderstorms. a slight 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...southwest winds 20 to 30 knots increasing to
gales to 35 knots after midnight. waves building to 5 to 8 feet
occasionally to 10 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...west winds 10 to 20 knots becoming southwest 15 to
25 knots. waves subsiding to calm to 2 feet, then building to
1 to 3 feet. 
.friday...southwest gales to 35 knots becoming west 20 to
30 knots. waves building to 3 to 5 feet occasionally to 7 feet,
then subsiding to 1 to 3 feet. 

$$

fzus63 kmqt 062001
glfls 
expires:202609070800;;016570

open lake forecast for lake superior
national weather service marquette mi
401 pm edt sun sep 6 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 through tonight 
and then briefly builds to 30.2 inches on monday as 30.4 inch high 
pressure crosses far northern ontario. meanwhile, a 29.6 inch low 
develops off the northern rockies by monday morning and then tracks 
northeast to hudson bay, deepening to 29.2 inches by wednesday 
afternoon. this sends a 29.6 to 29.7 inch trough over lake superior 
tuesday night and wednesday. weak ridging of 29.9 inches returns 
over the lake on thursday, followed by another trough ranging from 
29.5 to 29.7 inches on friday.




lsz264-070800-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
401 pm edt sun sep 6 2026

.late this afternoon...southeast winds 5 to 15 knots. waves calm
to 2 feet. 
.tonight...southeast winds 5 to 15 knots backing east late. waves
calm to 2 feet. 
.monday...east winds 5 to 15 knots increasing to 10 to 20 knots
late. a slight chance of showers. waves building to 2 to 4 feet. 
.monday night...southeast winds 10 to 20 knots increasing to
20 to 30 knots. a slight chance of showers through midnight, then
showers after midnight. waves building to 3 to 5 feet
occasionally to 7 feet, then subsiding to 2 to 4 feet. 
.tuesday...south winds 20 to 30 knots. 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 winds 20 to 30 knots becoming southwest
gales to 35 knots after midnight. waves subsiding to 3 to 5 feet
occasionally to 7 feet, then building to 5 to 8 feet occasionally
to 10 feet. 
.wednesday...west gales to 45 knots. waves building to 8 to
12 feet occasionally to 15 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 south. waves
subsiding to calm to 2 feet. 
.friday...south winds 15 to 25 knots becoming west 20 to
30 knots. a chance of showers. waves building to 2 to 4 feet. 

$$

fzus63 kmqt 062001
glfls 
expires:202609070800;;016571

open lake forecast for lake superior
national weather service marquette mi
401 pm edt sun sep 6 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 through tonight 
and then briefly builds to 30.2 inches on monday as 30.4 inch high 
pressure crosses far northern ontario. meanwhile, a 29.6 inch low 
develops off the northern rockies by monday morning and then tracks 
northeast to hudson bay, deepening to 29.2 inches by wednesday 
afternoon. this sends a 29.6 to 29.7 inch trough over lake superior 
tuesday night and wednesday. weak ridging of 29.9 inches returns 
over the lake on thursday, followed by another trough ranging from 
29.5 to 29.7 inches on friday.




lsz265-070800-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
401 pm edt sun sep 6 2026

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

.late this afternoon...east winds 10 to 20 knots. waves calm to
2 feet. 
.tonight...east winds 10 to 20 knots veering south late. waves
calm to 2 feet. 
.monday...south winds 5 to 15 knots backing southeast in the
afternoon, then becoming east 15 to 25 knots late. waves calm to
2 feet. 
.monday night...southeast winds 20 to 30 knots diminishing to
15 to 25 knots after midnight, then increasing to 20 to 30 knots
late. showers likely after midnight. waves building to 3 to
5 feet occasionally to 7 feet. 
.tuesday...south gales to 35 knots diminishing to 20 to 30 knots
by mid afternoon. showers through early afternoon. a slight
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. waves subsiding to 2 to 4 feet, then building to
3 to 6 feet occasionally to 8 feet. 
.wednesday...west gales to 45 knots. waves building to 6 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 15 to 25 knots becoming south 10 to
20 knots. waves subsiding to calm to 2 feet. 
.friday...south winds 20 to 30 knots veering southwest. waves
building to 2 to 4 feet. 

$$

fzus63 kmqt 062001
glfls 
expires:202609070800;;016572

open lake forecast for lake superior
national weather service marquette mi
401 pm edt sun sep 6 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 through tonight 
and then briefly builds to 30.2 inches on monday as 30.4 inch high 
pressure crosses far northern ontario. meanwhile, a 29.6 inch low 
develops off the northern rockies by monday morning and then tracks 
northeast to hudson bay, deepening to 29.2 inches by wednesday 
afternoon. this sends a 29.6 to 29.7 inch trough over lake superior 
tuesday night and wednesday. weak ridging of 29.9 inches returns 
over the lake on thursday, followed by another trough ranging from 
29.5 to 29.7 inches on friday.




lsz266-070800-
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 sun sep 6 2026

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

.late this afternoon...east winds 5 to 15 knots. waves calm to
2 feet. 
.tonight...east winds 5 to 15 knots veering southeast after
midnight, then becoming south 10 to 20 knots late. waves calm to
2 feet. 
.monday...south winds 10 to 20 knots becoming southeast 5 to
15 knots in the afternoon, then becoming east 10 to 20 knots
late. a slight chance of showers through early afternoon. waves
calm to 2 feet. 
.monday night...southeast winds 15 to 25 knots increasing to
20 to 30 knots late. a chance of showers after midnight. waves
building to 3 to 6 feet occasionally to 8 feet. 
.tuesday...south gales to 35 knots. showers and a slight chance
of thunderstorms. waves building to 4 to 8 feet occasionally to
10 feet. 
.tuesday night...south gales to 35 knots becoming southwest 20 to
30 knots after midnight. a chance of showers. waves subsiding to
3 to 6 feet occasionally to 8 feet, then building to 4 to 7 feet
occasionally to 9 feet. 
.wednesday...west gales to 45 knots. waves building to 9 to
12 feet occasionally to 15 feet. 
.wednesday night...west gales to 45 knots becoming northwest
gales to 35 knots after midnight. waves subsiding to 5 to 8 feet
occasionally to 10 feet. 
.thursday...northwest winds 20 to 30 knots becoming south 10 to
20 knots. waves subsiding to calm to 2 feet. 
.friday...south winds 20 to 30 knots becoming southwest gales to
35 knots. a chance of showers. waves building to 3 to 5 feet
occasionally to 7 feet. 

$$

fzus63 kmqt 062001
glfls 
expires:202609070800;;016573

open lake forecast for lake superior
national weather service marquette mi
401 pm edt sun sep 6 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 through tonight 
and then briefly builds to 30.2 inches on monday as 30.4 inch high 
pressure crosses far northern ontario. meanwhile, a 29.6 inch low 
develops off the northern rockies by monday morning and then tracks 
northeast to hudson bay, deepening to 29.2 inches by wednesday 
afternoon. this sends a 29.6 to 29.7 inch trough over lake superior 
tuesday night and wednesday. weak ridging of 29.9 inches returns 
over the lake on thursday, followed by another trough ranging from 
29.5 to 29.7 inches on friday.




lsz267-070800-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
401 pm edt sun sep 6 2026

.late this afternoon...northeast winds less than 10 knots. waves
calm to 2 feet. 
.tonight...east winds 5 to 15 knots veering south late. waves
calm to 2 feet. 
.monday...south winds 5 to 15 knots backing east late. a slight
chance of showers. waves calm to 2 feet. 
.monday night...southeast winds 5 to 15 knots increasing to 15 to
25 knots. a chance of showers after midnight. waves building to
1 to 3 feet. 
.tuesday...southeast winds 20 to 30 knots veering south by mid
afternoon. a chance of showers through early afternoon, then
showers 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
after midnight. showers likely through midnight. a chance of
showers after midnight. waves 3 to 6 feet occasionally to 8 feet.
.wednesday...southwest gales to 35 knots becoming west gales to
40 knots by mid afternoon. a chance of showers. waves building to
10 to 14 feet occasionally to 18 feet. 
.wednesday night...west gales to 40 knots becoming northwest
gales to 35 knots after midnight. waves subsiding to 7 to 10 feet
occasionally to 13 feet. 
.thursday...northwest winds 15 to 25 knots becoming west 10 to
20 knots. waves subsiding to calm to 2 feet. 
.friday...south winds 15 to 25 knots becoming southwest 20 to
30 knots. waves building to 3 to 5 feet occasionally to 7 feet. 

$$