fzus61 kbuf 302003
glflo 
expires:202610010300;;317285

open lake forecast for lake ontario
national weather service buffalo ny
402 pm edt wed sep 30 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 30.1 inch high will continue to build across the 
eastern seaboard, spanning across the eastern great lakes this 
afternoon. a warm front will lift across the lake thursday, followed 
by a cold front crossing the lower great lakes later thursday night 
and friday morning. a 30.3 inch high is then forecast to build into 
the western great lakes friday night and over the eastern great 
lakes by saturday, before exiting into northern new england sunday. 
meanwhile, a cold front will then cross the eastern great lakes 
sunday night, with another 30.3 inch high building from the western 
great lakes into the eastern great lakes monday and tuesday.


loz062-010300-
lake ontario open waters from the niagara river to hamlin beach-
403 pm edt wed sep 30 2026

.tonight...south winds 5 to 15 knots becoming southwest. a chance
of showers after midnight. showers likely late. waves 2 feet or
less. 
.thursday...south winds 10 to 15 knots becoming southwest 15 to
20 knots. showers likely early, then a chance of showers late in
the morning. waves 1 to 3 feet. 
.thursday night...southwest winds 15 to 20 knots becoming west
10 to 15 knots. showers. waves 2 to 3 feet. 
.friday...west winds 10 to 15 knots becoming northwest. showers
likely. waves 2 to 3 feet. 
.friday night...northwest winds 15 to 20 knots becoming north
10 to 15 knots. waves 2 to 4 feet. 
.saturday...north winds 10 knots or less becoming southeast.
waves 2 feet or less. 
.sunday...south winds 5 to 15 knots becoming northwest 15 to
20 knots. waves 2 feet or less building to 2 to 4 feet. 
.monday...northwest winds 15 to 20 knots becoming north 10 to
15 knots. waves 2 to 4 feet subsiding to 1 to 3 feet. 

$$

fzus61 kbuf 302003
glflo 
expires:202610010300;;317286

open lake forecast for lake ontario
national weather service buffalo ny
402 pm edt wed sep 30 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 30.1 inch high will continue to build across the 
eastern seaboard, spanning across the eastern great lakes this 
afternoon. a warm front will lift across the lake thursday, followed 
by a cold front crossing the lower great lakes later thursday night 
and friday morning. a 30.3 inch high is then forecast to build into 
the western great lakes friday night and over the eastern great 
lakes by saturday, before exiting into northern new england sunday. 
meanwhile, a cold front will then cross the eastern great lakes 
sunday night, with another 30.3 inch high building from the western 
great lakes into the eastern great lakes monday and tuesday.


loz063>065-010300-
lake ontario open waters from hamlin beach to the saint lawrence
river-
403 pm edt wed sep 30 2026

.tonight...southeast winds 5 to 15 knots becoming southwest. a
chance of showers late. waves 2 feet or less. 
.thursday...southwest winds 10 to 15 knots becoming south. a
chance of showers through early afternoon. waves 1 to 3 feet. 
.thursday night...southwest winds 10 to 15 knots becoming west. a
chance of showers in the evening, then showers overnight. waves
1 to 3 feet. 
.friday...west winds 10 to 15 knots increasing to 15 to 20 knots.
showers. waves 1 to 3 feet building to 2 to 4 feet. 
.friday night...northwest winds 15 to 20 knots becoming north
10 to 15 knots. a chance of showers in the evening. waves 3 to
5 feet subsiding to 2 to 4 feet. 
.saturday...north winds 5 to 15 knots becoming southeast 10 knots
or less. waves 1 to 3 feet subsiding to 1 foot or less. 
.sunday...south winds 15 to 20 knots becoming west. waves 1 to
3 feet building to 3 to 5 feet. 
.monday...northwest winds 15 to 20 knots becoming north. waves
3 to 5 feet subsiding to 2 to 4 feet. 

$$

fzus61 kcle 301936
glfle 
expires:202610010215;;316491

open lake forecast for lake erie
national weather service cleveland oh
336 pm edt wed sep 30 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...
weak low pressure 29.90 inches will extend a cold front through 
the area thursday night into friday, followed by high pressure 
30.20 inches on saturday. another cold front will cross the lake 
on sunday, followed by stronger high pressure 30.40 inches for 
early next week.


lez164>167-010215-
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-
336 pm edt wed sep 30 2026

.tonight...south winds 5 to 15 knots. a chance of showers through
the early overnight, then a slight chance of showers late. waves
2 feet or less. 
.thursday...south winds 10 to 15 knots becoming southwest. waves
1 to 3 feet. 
.thursday night...southwest winds 10 to 15 knots becoming west.
showers overnight. waves 1 to 3 feet. 
.friday...north winds 15 to 20 knots becoming northwest 10 to
15 knots. showers. waves 2 to 4 feet subsiding to 1 to 3 feet. 
.friday night...north winds 15 to 20 knots becoming northeast
10 to 15 knots. waves 2 to 4 feet. 
.saturday...northeast winds 5 to 15 knots becoming southeast.
waves 1 to 3 feet subsiding to 1 foot or less. 
.sunday...south winds 5 to 15 knots becoming north 15 to
20 knots. waves 2 feet or less building to 2 to 4 feet. 
.monday...north winds 15 to 20 knots diminishing to 10 to
15 knots. waves 2 to 4 feet. 

$$

fzus61 kcle 301936
glfle 
expires:202610010215;;316492

open lake forecast for lake erie
national weather service cleveland oh
336 pm edt wed sep 30 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...
weak low pressure 29.90 inches will extend a cold front through 
the area thursday night into friday, followed by high pressure 
30.20 inches on saturday. another cold front will cross the lake 
on sunday, followed by stronger high pressure 30.40 inches for 
early next week.


lez061-168-169-010215-
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-
336 pm edt wed sep 30 2026

.tonight...south winds 5 to 15 knots. a slight chance of showers
early, then showers likely late this evening. a chance of showers
after midnight. waves 2 feet or less. 
.thursday...south winds 10 to 15 knots becoming southwest. a
chance of showers early. waves 1 to 3 feet. 
.thursday night...southwest winds 10 to 15 knots becoming west. a
chance of showers overnight. waves 1 to 3 feet. 
.friday...northwest winds 10 to 15 knots. showers in the morning.
waves 1 to 3 feet. 
.friday night...northwest winds 15 to 20 knots becoming north
10 to 15 knots. waves 2 to 4 feet subsiding to 1 to 3 feet. 
.saturday...northeast winds 5 to 15 knots becoming southeast.
waves 2 feet or less. 
.sunday...south winds 5 to 15 knots becoming northwest 15 to
20 knots. waves 2 feet or less building to 2 to 4 feet. 
.monday...north winds 15 to 20 knots diminishing to 10 to
15 knots. waves 2 to 4 feet subsiding to 1 to 3 feet. 

$$

fzus61 kcle 301936
glfle 
expires:202610010215;;316490

open lake forecast for lake erie
national weather service cleveland oh
336 pm edt wed sep 30 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...
weak low pressure 29.90 inches will extend a cold front through 
the area thursday night into friday, followed by high pressure 
30.20 inches on saturday. another cold front will cross the lake 
on sunday, followed by stronger high pressure 30.40 inches for 
early next week.


lez162-163-010215-
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-
336 pm edt wed sep 30 2026

.tonight...south winds 5 to 10 knots. a chance of showers this
evening, then a slight chance of showers after midnight. waves
2 feet or less. 
.thursday...southwest winds around 10 knots. waves 1 to 2 feet. 
.thursday night...southwest winds 10 to 15 knots becoming
northwest. a chance of showers in the evening, then showers
overnight. waves 1 to 2 feet. 
.friday...north winds 10 to 15 knots becoming northwest. showers.
waves 1 to 3 feet. 
.friday night...north winds 10 to 15 knots becoming northeast.
waves 1 to 2 feet. 
.saturday...northeast winds 5 to 15 knots becoming southeast.
waves 2 feet or less. 
.sunday...southwest winds 10 knots or less becoming north and
increasing to 15 to 20 knots. waves 1 foot or less building to
1 to 3 feet. 
.monday...north winds 15 to 20 knots becoming northeast 10 to
15 knots. waves 1 to 3 feet. 

$$

fzus63 kdtx 301936
glfsc 
expires:202610010345;;316549

lake st clair forecast
national weather service detroit/pontiac mi
336 pm edt wed sep 30 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...a cold front will reside over southern lower michigan
this afternoon as southwest winds slowly increase. this front
will continue to bring occasional showers today through friday.
drier conditions move in later friday as high pressure, 30.30
inches, moves in from the west.


lcz460-010345-
lake st clair-
336 pm edt wed sep 30 2026

.tonight...south winds 10 to 15 knots diminishing to 5 to 10 knots
early in the morning. cloudy with a chance of light showers. waves 2
feet or less.
.thursday...southwest winds 5 to 10 knots increasing to 10 to 15
knots in the late morning and early afternoon...then diminishing to
5 to 10 knots late in the afternoon. mostly cloudy. a chance of
light showers early in the morning. waves 2 feet or less.
.thursday night...west winds 5 to 10 knots becoming north 15 to 20
knots after midnight. a chance of light showers early in the
evening...then showers in the late evening and overnight. waves 2
feet or less.
.friday...north winds 15 to 20 knots becoming northwest 10 to 15
knots in the late morning and afternoon. partly sunny. a chance of
light showers until late afternoon. waves 2 feet or less.
.friday night...north winds 10 to 15 knots. mostly clear. waves 2
feet or less.
.saturday...north winds 5 to 10 knots veering to the east in the
afternoon and evening. sunny becoming mostly clear. waves 2 feet or
less.
.sunday...northwest winds 15 to 20 knots. mostly clear. waves 2 feet
or less.
.monday...north winds 15 to 20 knots. mostly clear. waves 1 to 3
feet.

$$

fzus63 kdtx 301936
glflh 
expires:202610010345;;316545

open lake forecast for lake huron
national weather service detroit/pontiac mi
336 pm edt wed sep 30 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...a cold front will reside over southern lower michigan
this afternoon as southwest winds slowly increase. this front
will continue to bring occasional showers today through friday.
drier conditions move in later friday as high pressure, 30.30
inches, moves in from the west.


lhz361-010345-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
336 pm edt wed sep 30 2026

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


$$

fzus63 kdtx 301936
glflh 
expires:202610010345;;316546

open lake forecast for lake huron
national weather service detroit/pontiac mi
336 pm edt wed sep 30 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...a cold front will reside over southern lower michigan
this afternoon as southwest winds slowly increase. this front
will continue to bring occasional showers today through friday.
drier conditions move in later friday as high pressure, 30.30
inches, moves in from the west.


lhz362-363-010345-
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-
336 pm edt wed sep 30 2026

.tonight...south winds 15 to 20 knots with gusts to around
30 knots becoming southwest 10 to 15 knots after midnight. a
chance of showers after midnight. waves 4 to 6 feet. waves
occasionally around 8 feet. 
.thursday...southwest winds 10 to 15 knots decreasing to 5 to
10 knots late in the afternoon. showers likely in the morning...
then showers in the afternoon. waves 2 to 4 feet subsiding to
1 to 3 feet in the late morning and afternoon. 
.thursday night...west winds 10 to 15 knots becoming northwest
15 to 20 knots in the late evening and overnight. a chance of
showers. waves 1 to 3 feet building to 3 to 5 feet in the late
evening and overnight. 
.friday...northwest winds 10 to 15 knots increasing to 15 to
20 knots with gusts to around 30 knots in the late morning and
afternoon. waves 3 to 5 feet building to 5 to 7 feet early in the
afternoon. waves occasionally around 10 feet. 
.friday night...northwest winds 20 to 25 knots with gusts to
around 30 knots decreasing to 10 to 15 knots. waves 4 to 6 feet. 
.saturday...north winds 5 to 10 knots in the morning becoming
light and variable...then becoming southeast 5 to 10 knots late
in the afternoon becoming south 10 to 15 knots. waves 1 to
3 feet. waves occasionally around 8 feet. 
.sunday...south winds 10 to 15 knots becoming southwest 15 to
20 knots in the late morning and early afternoon...then veering
to the west with gusts to around 30 knots early in the evening
becoming northwest 20 to 25 knots with gusts to around 30 knots
by midnight. waves 2 to 4 feet building to 6 to 9 feet. waves
occasionally around 12 feet. 
.monday...northwest winds 15 to 20 knots decreasing to 10 to
15 knots by midnight. waves 4 to 6 feet. 


$$

fzus63 kdtx 301936
glflh 
expires:202610010345;;316547

open lake forecast for lake huron
national weather service detroit/pontiac mi
336 pm edt wed sep 30 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...a cold front will reside over southern lower michigan
this afternoon as southwest winds slowly increase. this front
will continue to bring occasional showers today through friday.
drier conditions move in later friday as high pressure, 30.30
inches, moves in from the west.


lhz462>464-010345-
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-
336 pm edt wed sep 30 2026

.tonight...south winds 10 to 15 knots increasing to 15 to
20 knots late in the evening...then decreasing to 10 to 15 knots
after midnight. a chance of showers. waves 2 to 4 feet. 
.thursday...southwest winds 10 to 15 knots. showers likely in the
morning...then showers in the afternoon. waves 1 to 3 feet. 
.thursday night...southwest winds 10 to 15 knots veering to the
northwest by midnight...then increasing to 15 to 20 knots after
midnight. showers in the evening...then a chance of showers after
midnight. waves 1 to 3 feet building to 3 to 5 feet after
midnight. 
.friday...northwest winds 15 to 20 knots. waves 3 to 5 feet. 
.friday night...north winds 15 to 20 knots decreasing to 10 to
15 knots after midnight. waves 4 to 6 feet. 
.saturday...north winds 5 to 10 knots in the morning becoming
light and variable...then becoming south 5 to 10 knots late in
the evening. waves 3 to 5 feet subsiding to 1 to 3 feet. waves
occasionally around 8 feet. 
.sunday...south winds 10 to 15 knots veering to the west early in
the evening...then becoming northwest 20 to 25 knots by midnight.
waves 1 to 3 feet building to 6 to 9 feet . waves occasionally
around 12 feet. 
.monday...northwest winds 15 to 20 knots. waves 6 to 9 feet
subsiding to 3 to 5 feet by midnight. waves occasionally around
12 feet. 


$$

fzus63 kmkx 301949
glflm 
expires:202610010315;;316778

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
249 pm cdt wed sep 30 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...

south winds will gradually become southwest and ease tonight into
thursday morning, as a cold front approaches from the northern 
plains. wind gusts to 30 knots are possible into early this 
evening, along with building waves, particularly across central 
and northern portions of the lake. 

expect northwest winds in the wake of the front by thursday 
evening, with north to northwest winds thursday night into friday.
strong high pressure around 30.4 inches will overspread the great
lakes friday night. this should bring lighter winds to the lake 
friday night into saturday.

a fast-moving low pressure system around 29.8 inches should move 
across or north of lake superior saturday night, with high 
pressure around 30.4 inches moving southeast into the region by 
early next week. south to southwest winds saturday night should 
veer northwest to north sunday into monday across lake michigan.


lmz080-669-671-673-675-777-779-870-872-874-876-878-010315-
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-
249 pm cdt wed sep 30 2026

sheboygan wi to pentwater mi south...

.tonight...south winds 15 to 25 kt becoming southwest 10 to
20 kt. patchy fog. chance of showers and slight chance of
thunderstorms this evening, then showers and slight chance of
thunderstorms overnight. waves 5 to 8 ft occasionally to 10 ft
subsiding to 3 to 5 ft. 
.thursday...southwest winds 10 to 15 kt veering to west. patchy
fog. showers and slight chance of thunderstorms. waves 2 to 4 ft.
.thursday night...northwest winds 10 to 15 kt becoming north
10 to 20 kt. patchy fog in the evening. chance of showers. waves
2 to 4 ft building to 4 to 6 ft occasionally to 8 ft.
.friday...north winds 10 to 20 kt increasing to 15 to 25 kt.
waves 4 to 7 ft occasionally to 9 ft. 
.friday night...north winds 10 to 20 kt becoming northeast 10 to
15 kt. waves 4 to 7 ft occasionally to 9 ft subsiding to 3 to
5 ft. 
.saturday...east winds 10 to 15 kt becoming southeast. waves 1 to
3 ft. 
.saturday night...south winds 10 to 20 kt becoming southwest.
waves 2 to 4 ft. 
.sunday...west winds 10 to 20 kt becoming northwest. waves 3 to
5 ft. 
.monday...north winds 10 to 20 kt. waves 4 to 6 ft occasionally
to 8 ft.  

$$

fzus63 kmkx 301949
glflm 
expires:202610010315;;316777

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
249 pm cdt wed sep 30 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...

south winds will gradually become southwest and ease tonight into
thursday morning, as a cold front approaches from the northern 
plains. wind gusts to 30 knots are possible into early this 
evening, along with building waves, particularly across central 
and northern portions of the lake. 

expect northwest winds in the wake of the front by thursday 
evening, with north to northwest winds thursday night into friday.
strong high pressure around 30.4 inches will overspread the great
lakes friday night. this should bring lighter winds to the lake 
friday night into saturday.

a fast-moving low pressure system around 29.8 inches should move 
across or north of lake superior saturday night, with high 
pressure around 30.4 inches moving southeast into the region by 
early next week. south to southwest winds saturday night should 
veer northwest to north sunday into monday across lake michigan.


lmz261-362-364-366-563-565-567-868-010315-
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-
249 pm cdt wed sep 30 2026

sheboygan wi to pentwater mi north...

.tonight...south winds 15 to 25 kt becoming southwest 10 to
20 kt. patchy fog. chance of showers overnight. waves 5 to 8 ft
occasionally to 10 ft subsiding to 3 to 5 ft. 
.thursday...southwest winds 10 to 15 kt veering to northwest
10 to 20 kt. patchy fog. chance of showers. waves 2 to 4 ft.
.thursday night...north winds 10 to 20 kt becoming northwest.
waves 2 to 4 ft. 
.friday...northwest winds 10 to 20 kt increasing to 15 to 25 kt.
waves 3 to 5 ft. 
.friday night...north winds 15 to 25 kt becoming northeast 5 to
10 kt overnight. waves 2 to 4 ft subsiding to 1 to 2 ft. 
.saturday...south winds 5 to 10 kt increasing to 10 to 20 kt in
the afternoon. waves 1 to 2 ft building to 1 to 3 ft. 
.saturday night...south winds 10 to 20 kt becoming southwest to
30 kt. chance of showers. waves 2 to 4 ft building to 4 to 6 ft
occasionally to 8 ft. 
.sunday...west winds to 30 kt becoming northwest. waves 4 to 6 ft
occasionally to 8 ft. 
.monday...north winds 10 to 20 kt. waves 2 to 4 ft.  

$$

fzus63 kmqt 302001
glfls 
expires:202610010800;;317204

open lake forecast for lake superior
national weather service marquette mi
401 pm edt wed sep 30 2026

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

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

.synopsis...

a 29.0 inch low over hudson bay this afternoon has caused a 29.7 
inch trough over lake superior. 29.8 inch troughing lingers over the 
lake through thursday morning between the canadian low and another 
29.7 low over the south plains. high pressure builds to 30.2 inches 
over the northern plains thursday night into friday before shifting 
east to the great lakes friday night and saturday. a weak 29.9 inch 
trough crosses lake superior saturday night and sunday, with 30.3 
inch high pressure quickly returning sunday night into monday. 




lsz162-010800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
401 pm edt wed sep 30 2026 /301 pm cdt wed sep 30 2026/

.late this afternoon...southwest winds 5 to 15 knots. patchy fog.
waves calm to 2 feet. 
.tonight...southwest winds 5 to 15 knots veering west after
midnight, then becoming northwest 10 to 20 knots late. waves calm
to 2 feet. 
.thursday...northwest winds 10 to 20 knots backing west in the
afternoon, then increasing to 15 to 25 knots late. waves calm to
2 feet. 
.thursday night...northwest winds 15 to 25 knots. waves building
to 1 to 3 feet. 
.friday...northwest winds 10 to 20 knots becoming west 5 to
15 knots by mid afternoon. waves subsiding to calm to 2 feet. 
.friday night...west winds 5 to 15 knots backing southwest after
midnight. waves calm to 2 feet. 
.saturday...south winds 5 to 15 knots increasing to 10 to
20 knots by mid afternoon. a chance of showers. waves calm to
2 feet. 
.saturday night...southwest winds 15 to 25 knots veering west
after midnight. a chance of showers through midnight. waves
building to 1 to 3 feet. 
.sunday...northwest winds 15 to 25 knots diminishing to 10 to
20 knots. waves subsiding to calm to 2 feet. 
.monday...northwest winds 5 to 15 knots becoming south 10 to
20 knots. waves calm to 2 feet. 

$$

fzus63 kmqt 302001
glfls 
expires:202610010800;;317205

open lake forecast for lake superior
national weather service marquette mi
401 pm edt wed sep 30 2026

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

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

.synopsis...

a 29.0 inch low over hudson bay this afternoon has caused a 29.7 
inch trough over lake superior. 29.8 inch troughing lingers over the 
lake through thursday morning between the canadian low and another 
29.7 low over the south plains. high pressure builds to 30.2 inches 
over the northern plains thursday night into friday before shifting 
east to the great lakes friday night and saturday. a weak 29.9 inch 
trough crosses lake superior saturday night and sunday, with 30.3 
inch high pressure quickly returning sunday night into monday. 




lsz263-010800-
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 wed sep 30 2026

.late this afternoon...southwest winds 10 to 20 knots. patchy
fog. waves 1 to 3 feet subsiding to calm to 2 feet. 
.tonight...southwest winds 5 to 15 knots veering northwest late.
patchy fog. waves calm to 2 feet. 
.thursday...northwest winds 5 to 15 knots becoming west 10 to
20 knots in the afternoon, then increasing to 15 to 25 knots
late. waves building to 2 to 4 feet. 
.thursday night...northwest winds 15 to 25 knots diminishing to
10 to 20 knots after midnight. waves building to 3 to 5 feet
occasionally to 7 feet. 
.friday...northwest winds 10 to 20 knots backing west by mid
afternoon. waves subsiding to 1 to 3 feet. 
.friday night...west winds 5 to 15 knots backing southwest after
midnight. waves subsiding to calm to 2 feet. 
.saturday...south winds 10 to 20 knots increasing to 15 to
25 knots by mid afternoon. a chance of showers. waves calm to
2 feet. 
.saturday night...south winds 10 to 20 knots becoming west 15 to
25 knots after midnight. a chance of showers. waves building to
3 to 5 feet occasionally to 7 feet. 
.sunday...northwest winds 20 to 30 knots diminishing to 15 to
25 knots. waves building to 3 to 6 feet occasionally to 8 feet,
then subsiding to 1 to 3 feet. 
.monday...northwest winds 5 to 15 knots becoming south 10 to
20 knots. waves subsiding to calm to 2 feet, then building to
1 to 3 feet. 

$$

fzus63 kmqt 302001
glfls 
expires:202610010800;;317206

open lake forecast for lake superior
national weather service marquette mi
401 pm edt wed sep 30 2026

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

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

.synopsis...

a 29.0 inch low over hudson bay this afternoon has caused a 29.7 
inch trough over lake superior. 29.8 inch troughing lingers over the 
lake through thursday morning between the canadian low and another 
29.7 low over the south plains. high pressure builds to 30.2 inches 
over the northern plains thursday night into friday before shifting 
east to the great lakes friday night and saturday. a weak 29.9 inch 
trough crosses lake superior saturday night and sunday, with 30.3 
inch high pressure quickly returning sunday night into monday. 




lsz264-010800-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
401 pm edt wed sep 30 2026

.late this afternoon...southwest winds 5 to 15 knots. patchy fog.
waves 1 to 3 feet. 
.tonight...southwest winds 5 to 15 knots veering west after
midnight, then veering north late. patchy fog. waves subsiding to
calm to 2 feet. 
.thursday...northwest winds 10 to 20 knots backing west in the
afternoon, then increasing to 15 to 25 knots late. waves building
to 2 to 4 feet. 
.thursday night...northwest winds 15 to 25 knots diminishing to
10 to 20 knots after midnight, then increasing to 15 to 25 knots
late. waves building to 3 to 5 feet occasionally to 7 feet. 
.friday...northwest winds 15 to 25 knots. waves building to 3 to
6 feet occasionally to 8 feet, then subsiding to 2 to 4 feet. 
.friday night...west winds 5 to 15 knots. waves subsiding to calm
to 2 feet. 
.saturday...southwest winds 5 to 15 knots backing south by mid
afternoon. a chance of showers by mid afternoon. waves calm to
2 feet. 
.saturday night...south winds 10 to 20 knots becoming west 15 to
25 knots after midnight. a chance of showers. waves building to
3 to 5 feet occasionally to 7 feet. 
.sunday...northwest gales to 40 knots diminishing to 15 to
25 knots. waves building to 5 to 8 feet occasionally to 10 feet,
then subsiding to 2 to 4 feet. 
.monday...northwest winds 5 to 15 knots becoming south 10 to
20 knots. waves subsiding to calm to 2 feet. 

$$

fzus63 kmqt 302001
glfls 
expires:202610010800;;317207

open lake forecast for lake superior
national weather service marquette mi
401 pm edt wed sep 30 2026

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

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

.synopsis...

a 29.0 inch low over hudson bay this afternoon has caused a 29.7 
inch trough over lake superior. 29.8 inch troughing lingers over the 
lake through thursday morning between the canadian low and another 
29.7 low over the south plains. high pressure builds to 30.2 inches 
over the northern plains thursday night into friday before shifting 
east to the great lakes friday night and saturday. a weak 29.9 inch 
trough crosses lake superior saturday night and sunday, with 30.3 
inch high pressure quickly returning sunday night into monday. 




lsz265-010800-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
401 pm edt wed sep 30 2026

.late this afternoon...south winds 5 to 15 knots. waves calm to
2 feet. 
.tonight...south winds 5 to 15 knots becoming southwest 10 to
20 knots after midnight, then veering west late. waves calm to
2 feet. 
.thursday...northwest winds 15 to 25 knots increasing to 20 to
30 knots in the afternoon, then backing west late. waves building
to 2 to 4 feet, then subsiding to 1 to 3 feet. 
.thursday night...west winds 20 to 30 knots veering northwest
after midnight. waves building to 3 to 5 feet occasionally to
7 feet. 
.friday...northwest gales to 35 knots diminishing to 20 to
30 knots by mid afternoon. waves building to 5 to 8 feet
occasionally to 10 feet, then subsiding to 3 to 5 feet
occasionally to 7 feet. 
.friday night...west winds 10 to 20 knots backing southwest after
midnight. waves subsiding to calm to 2 feet. 
.saturday...southwest winds 10 to 20 knots becoming south 15 to
25 knots by mid afternoon. waves calm to 2 feet. 
.saturday night...south winds 15 to 25 knots becoming west gales
to 35 knots after midnight. a chance of showers. waves building
to 3 to 5 feet occasionally to 7 feet. 
.sunday...northwest gales to 45 knots diminishing to 20 to
30 knots. waves building to 6 to 9 feet occasionally to 11 feet,
then subsiding to 3 to 5 feet occasionally to 7 feet. 
.monday...northwest winds 10 to 20 knots backing south. waves
subsiding to calm to 2 feet. 

$$

fzus63 kmqt 302001
glfls 
expires:202610010800;;317208

open lake forecast for lake superior
national weather service marquette mi
401 pm edt wed sep 30 2026

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

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

.synopsis...

a 29.0 inch low over hudson bay this afternoon has caused a 29.7 
inch trough over lake superior. 29.8 inch troughing lingers over the 
lake through thursday morning between the canadian low and another 
29.7 low over the south plains. high pressure builds to 30.2 inches 
over the northern plains thursday night into friday before shifting 
east to the great lakes friday night and saturday. a weak 29.9 inch 
trough crosses lake superior saturday night and sunday, with 30.3 
inch high pressure quickly returning sunday night into monday. 




lsz266-010800-
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 wed sep 30 2026

.late this afternoon...south winds 5 to 15 knots. patchy fog.
waves 1 to 3 feet. 
.tonight...south winds 5 to 15 knots becoming southwest 10 to
20 knots after midnight, then veering west late. patchy fog.
waves subsiding to calm to 2 feet. 
.thursday...northwest winds 15 to 25 knots. waves building to
3 to 5 feet occasionally to 7 feet, then subsiding to 2 to
4 feet. 
.thursday night...northwest winds 15 to 25 knots. waves building
to 3 to 6 feet occasionally to 8 feet. 
.friday...northwest winds 20 to 30 knots. waves building to 5 to
9 feet occasionally to 11 feet. 
.friday night...northwest winds 10 to 20 knots becoming west 5 to
15 knots after midnight. waves subsiding to calm to 2 feet. 
.saturday...southwest winds 10 to 20 knots backing south by mid
afternoon. a chance of showers by mid afternoon. waves building
to 1 to 3 feet. 
.saturday night...south winds 20 to 30 knots veering west after
midnight. showers likely through midnight, then a chance of
showers after midnight. waves building to 3 to 6 feet
occasionally to 8 feet. 
.sunday...northwest gales to 45 knots. waves building to 7 to
10 feet occasionally to 13 feet, then subsiding to 3 to 6 feet
occasionally to 8 feet. 
.monday...northwest winds 10 to 20 knots backing south. waves
subsiding to calm to 2 feet. 

$$

fzus63 kmqt 302001
glfls 
expires:202610010800;;317209

open lake forecast for lake superior
national weather service marquette mi
401 pm edt wed sep 30 2026

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

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

.synopsis...

a 29.0 inch low over hudson bay this afternoon has caused a 29.7 
inch trough over lake superior. 29.8 inch troughing lingers over the 
lake through thursday morning between the canadian low and another 
29.7 low over the south plains. high pressure builds to 30.2 inches 
over the northern plains thursday night into friday before shifting 
east to the great lakes friday night and saturday. a weak 29.9 inch 
trough crosses lake superior saturday night and sunday, with 30.3 
inch high pressure quickly returning sunday night into monday. 




lsz267-010800-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
401 pm edt wed sep 30 2026

.late this afternoon...south winds 5 to 15 knots. waves calm to
2 feet. 
.tonight...south winds 10 to 20 knots veering southwest late. a
slight chance of showers through midnight. patchy fog. waves calm
to 2 feet. 
.thursday...west winds 10 to 20 knots becoming northwest 15 to
25 knots in the afternoon, then increasing to 20 to 30 knots
late. patchy fog through early afternoon. waves building to 3 to
5 feet occasionally to 7 feet. 
.thursday night...northwest winds 15 to 25 knots. waves subsiding
to 2 to 4 feet. 
.friday...northwest winds 20 to 30 knots. waves building to 6 to
10 feet occasionally to 13 feet. 
.friday night...northwest winds 15 to 25 knots becoming west 5 to
15 knots after midnight. waves subsiding to calm to 2 feet. 
.saturday...southwest winds 5 to 15 knots becoming south 10 to
20 knots by mid afternoon. waves calm to 2 feet. 
.saturday night...south winds 15 to 25 knots becoming southwest
20 to 30 knots after midnight. a chance of showers through
midnight, then showers likely after midnight. waves building to
3 to 6 feet occasionally to 8 feet. 
.sunday...northwest gales to 40 knots becoming north gales to
35 knots. waves building to 9 to 12 feet occasionally to 15 feet,
then subsiding to 3 to 6 feet occasionally to 8 feet. 
.monday...northwest winds 15 to 25 knots diminishing to 5 to
15 knots. waves subsiding to calm to 2 feet. 

$$