fzus61 kbuf 220803
glflo 
expires:202610221500;;983458

open lake forecast for lake ontario
national weather service buffalo ny
402 am edt thu oct 22 2026

for waters beyond five nautical miles of shore on lake ontario

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

.synopsis...a high pressure ridge averaging 30.4 inches continues to 
exit toward the canadian maritimes before a weak cold front sweeps 
southeastward across the lake late this morning through afternoon. 
behind the front, another ridge averaging 30.5 inches affects the 
lake through this weekend as the embedded high pressure center moves 
southeastward across the great lakes through friday and then moves 
farther southeastward to atlantic waters near long island and new 
jersey by this sunday. this ridge should begin to exit southeastward 
sunday night and a cold front should sweep southeastward across the 
lake on monday.


loz063>065-221500-
lake ontario open waters from hamlin beach to the saint lawrence
river-
402 am edt thu oct 22 2026

.today...northwest winds 5 to 10 knots becoming north. waves
1 foot or less. 
.tonight...north winds 15 to 20 knots becoming northeast. waves
1 to 3 feet building to 2 to 4 feet. 
.friday...northeast winds 5 to 15 knots. waves 2 to 4 feet
subsiding to 1 to 3 feet. 
.friday night...northeast winds 10 knots or less becoming
southeast. waves 2 feet or less. 
.saturday...southeast winds 10 knots or less becoming south.
waves 2 feet or less. 
.sunday...south winds 5 to 15 knots becoming southwest. waves
2 feet or less. 
.monday...southwest winds 5 to 15 knots becoming north 15 to
20 knots. waves 1 to 3 feet. 

$$

fzus61 kbuf 220803
glflo 
expires:202610221500;;983457

open lake forecast for lake ontario
national weather service buffalo ny
402 am edt thu oct 22 2026

for waters beyond five nautical miles of shore on lake ontario

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

.synopsis...a high pressure ridge averaging 30.4 inches continues to 
exit toward the canadian maritimes before a weak cold front sweeps 
southeastward across the lake late this morning through afternoon. 
behind the front, another ridge averaging 30.5 inches affects the 
lake through this weekend as the embedded high pressure center moves 
southeastward across the great lakes through friday and then moves 
farther southeastward to atlantic waters near long island and new 
jersey by this sunday. this ridge should begin to exit southeastward 
sunday night and a cold front should sweep southeastward across the 
lake on monday.


loz062-221500-
lake ontario open waters from the niagara river to hamlin beach-
402 am edt thu oct 22 2026

.today...northwest winds 10 knots or less becoming north. waves
1 foot or less. 
.tonight...north winds 10 to 15 knots becoming east. waves 2 feet
or less building to 2 to 3 feet. 
.friday...east winds 10 to 15 knots. waves 1 to 3 feet. 
.friday night...east winds 5 to 15 knots becoming southeast.
waves 1 to 2 feet. 
.saturday...southeast winds 10 knots or less becoming south.
waves 1 foot or less. 
.sunday...southwest winds 5 to 10 knots. waves 1 foot or less. 
.monday...west winds 5 to 15 knots becoming northeast. waves
2 feet or less. 

$$

fzus61 kcle 220740
glfle 
expires:202610221415;;982681

open lake forecast for lake erie
national weather service cleveland oh
340 am edt thu oct 22 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 30.30 inches will slowly move south across the eastern 
great lakes through saturday, strengthening to 30.60 inches. high 
pressure will continue to push south along the east coast on sunday 
and monday, weakening to 30.30 inches.


lez165>167-221415-
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-
340 am edt thu oct 22 2026

.today...north winds 10 knots or less. waves 1 foot or less. 
.tonight...north winds 5 to 10 knots becoming east. waves 2 feet
or less. 
.friday...east winds 5 to 15 knots becoming northeast. waves 1 to
2 feet. 
.friday night...east winds 5 to 15 knots becoming southeast.
waves 1 to 3 feet. 
.saturday...southeast winds 10 knots or less becoming south.
waves 2 feet or less. 
.sunday...south winds 5 to 10 knots becoming southwest. waves
2 feet or less. 
.monday...southwest winds 5 to 15 knots becoming northeast. waves
2 feet or less. 

$$

fzus61 kcle 220740
glfle 
expires:202610221415;;982682

open lake forecast for lake erie
national weather service cleveland oh
340 am edt thu oct 22 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 30.30 inches will slowly move south across the eastern 
great lakes through saturday, strengthening to 30.60 inches. high 
pressure will continue to push south along the east coast on sunday 
and monday, weakening to 30.30 inches.


lez061-168-169-221415-
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-
340 am edt thu oct 22 2026

.today...north winds 10 knots or less. waves 1 foot or less. 
.tonight...north winds less than 10 knots becoming east 5 to
15 knots. waves 2 feet or less. 
.friday...east winds 5 to 10 knots becoming northeast. waves
2 feet or less. 
.friday night...northeast winds 5 to 15 knots becoming southeast.
waves 2 feet or less. 
.saturday...south winds 10 knots or less. waves 2 feet or less. 
.sunday...south winds 5 to 10 knots becoming southwest. waves
2 feet or less. 
.monday...southwest winds 5 to 15 knots becoming northeast. waves
1 to 2 feet. 

$$

fzus61 kcle 220740
glfle 
expires:202610221415;;982680

open lake forecast for lake erie
national weather service cleveland oh
340 am edt thu oct 22 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 30.30 inches will slowly move south across the eastern 
great lakes through saturday, strengthening to 30.60 inches. high 
pressure will continue to push south along the east coast on sunday 
and monday, weakening to 30.30 inches.


lez162>164-221415-
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-
the islands to vermilion oh beyond 5 nm off shoreline to us-
canadian border-
340 am edt thu oct 22 2026

.today...northwest winds 10 knots or less becoming north. waves
1 foot or less. 
.tonight...light and variable winds becoming northeast 5 to
10 knots. waves 1 foot or less. 
.friday...east winds 10 knots or less. patchy fog in the morning.
waves 1 foot or less. 
.friday night...east winds 5 to 15 knots becoming southeast.
waves 2 feet or less. 
.saturday...southeast winds 10 knots or less becoming south.
waves 1 foot or less. 
.sunday...south winds 10 knots or less becoming southwest. waves
1 foot or less. 
.monday...southwest winds 10 knots or less becoming northeast
10 to 15 knots. waves 2 feet or less. 

$$

fzus63 kdtx 220732
glfsc 
expires:202610221545;;982468

lake st clair forecast
national weather service detroit/pontiac mi
332 am edt thu oct 22 2026

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

.synopsis...high pressure, 30.40 inches, builds over the area
today. this high migrates toward southern quebec by friday then
sinks southward to new england this weekend.


lcz460-221545-
lake st clair-
332 am edt thu oct 22 2026

.today...light and variable winds becoming north 5 to 10 knots late
in the afternoon. sunny. waves 2 feet or less.
.tonight...northeast winds 5 to 10 knots. mostly clear. patchy fog
early in the morning. waves 2 feet or less.
.friday...east winds 5 to 10 knots. partly sunny. patchy fog early
in the morning. waves 2 feet or less.
.friday night...east winds 5 to 10 knots. mostly clear. waves 2 feet
or less.
.saturday...east winds 5 to 10 knots veering to the southeast in the
evening. clear. waves 2 feet or less.
.sunday...south winds 5 to 10 knots. mostly clear. waves 2 feet or
less.
.monday...northeast winds 10 to 15 knots. partly cloudy. waves 2
feet or less.

$$

fzus63 kdtx 220732
glflh 
expires:202610221545;;982464

open lake forecast for lake huron
national weather service detroit/pontiac mi
332 am edt thu oct 22 2026

for waters beyond five nautical miles off shore on lake huron

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

.synopsis...high pressure, 30.40 inches, builds over the area
today. this high migrates toward southern quebec by friday then
sinks southward to new england this weekend.


lhz361-362-221545-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
lake huron from presque isle light to sturgeon point mi beyond
5nm off shore-
332 am edt thu oct 22 2026

.today...north winds 5 to 10 knots until late afternoon becoming
light and variable. patchy fog in the morning. waves 2 feet or
less. 
.tonight...light and variable winds becoming east 5 to 10 knots
after midnight. waves 2 feet or less. 
.friday...southeast winds 5 to 10 knots. waves 2 feet or less. 
.friday night...southeast winds 5 to 10 knots. waves 1 to 3 feet.
.saturday...south winds 5 to 10 knots increasing to 10 to
15 knots. waves 1 to 3 feet building to 2 to 4 feet late in the
evening. 
.sunday...south winds 10 to 15 knots decreasing to 5 to 10 knots
early in the evening...then veering to the west by midnight.
waves 2 to 4 feet subsiding to 1 to 3 feet . 
.monday...north winds 5 to 10 knots increasing to 10 to 15 knots
by midnight. waves 1 to 3 feet. 


$$

fzus63 kdtx 220732
glflh 
expires:202610221545;;982465

open lake forecast for lake huron
national weather service detroit/pontiac mi
332 am edt thu oct 22 2026

for waters beyond five nautical miles off shore on lake huron

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

.synopsis...high pressure, 30.40 inches, builds over the area
today. this high migrates toward southern quebec by friday then
sinks southward to new england this weekend.


lhz363-462>464-221545-
lake huron from sturgeon point to alabaster mi beyond 5nm off
shore-
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-
332 am edt thu oct 22 2026

.today...north winds 5 to 10 knots. waves 2 feet or less. 
.tonight...northeast winds 5 to 10 knots veering to the east
early in the morning. waves 1 to 3 feet. 
.friday...southeast winds 5 to 10 knots. waves 2 feet or less. 
.friday night...southeast winds 5 to 10 knots increasing to 10 to
15 knots in the late evening and overnight. waves 1 to 3 feet. 
.saturday...southeast winds 5 to 10 knots becoming south 10 to
15 knots late in the afternoon. waves 1 to 3 feet building to
2 to 4 feet late in the evening. 
.sunday...south winds 10 to 15 knots decreasing to 5 to 10 knots
. waves 2 to 4 feet subsiding to 1 to 3 feet. 
.monday...northwest winds 5 to 10 knots becoming 10 to 15 knots .
waves 1 to 3 feet building to 2 to 4 feet by midnight. 


$$

fzus63 kmkx 220801
glflm 
expires:202610221530;;983349

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
301 am cdt thu oct 22 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 of 30.3 inches will gradually shift eastward 
through friday, while strengthening to 30.5 inches over the 
eastern ontario. light winds will continue through today, 
increasing a bit out of the south on friday behind the 
strengthening high. southerly winds will then persist through the 
weekend between the high to the east and a trough to the 
northwest. 

patchy fog is possible this morning and perhaps a bit more likely
tonight into friday morning.


lmz261-362-364-366-563-565-567-868-221530-
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-
301 am cdt thu oct 22 2026

sheboygan wi to pentwater mi north...

.today...northeast winds 5 to 10 kt. patchy fog this morning,
then patchy dense fog this afternoon. waves 1 ft or less. 
.tonight...east winds 5 to 10 kt veering to southeast 10 to
15 kt. waves 1 to 2 ft. 
.friday...south winds 10 to 15 kt. waves 1 to 3 ft. 
.friday night...south winds 10 to 15 kt increasing to 10 to
20 kt. waves 1 to 3 ft. 
.saturday...south winds 15 to 25 kt increasing to 30 kt. waves
3 to 5 ft building to 4 to 7 ft occasionally to 9 ft.
.saturday night...south winds to 30 kt. waves 4 to 7 ft
occasionally to 9 ft. 
.sunday...southwest winds to 30 kt diminishing to 10 to 20 kt.
waves 3 to 5 ft subsiding to 2 to 4 ft. 
.monday...northeast winds 10 to 20 kt. waves 3 to 5 ft.  

$$

fzus63 kmkx 220801
glflm 
expires:202610221530;;983350

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
301 am cdt thu oct 22 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 of 30.3 inches will gradually shift eastward 
through friday, while strengthening to 30.5 inches over the 
eastern ontario. light winds will continue through today, 
increasing a bit out of the south on friday behind the 
strengthening high. southerly winds will then persist through the 
weekend between the high to the east and a trough to the 
northwest. 

patchy fog is possible this morning and perhaps a bit more likely
tonight into friday morning.


lmz080-669-671-673-675-777-779-870-872-874-876-878-221530-
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-
301 am cdt thu oct 22 2026

sheboygan wi to pentwater mi south...

.today...northeast winds 5 to 10 kt diminishing to less than
10 kt. waves nearly calm. 
.tonight...northeast winds less than 10 kt increasing to 5 to
10 kt late in the evening, then becoming east after midnight
becoming southeast late. waves 1 to 2 ft. 
.friday...southeast winds 10 to 15 kt. waves 1 to 3 ft. 
.friday night...southeast winds 10 to 15 kt becoming south 10 to
20 kt. waves 2 to 4 ft. 
.saturday...south winds 15 to 25 kt increasing to 30 kt. waves
3 to 5 ft building to 4 to 7 ft occasionally to 9 ft.
.saturday night...south winds 15 to 25 kt diminishing to 10 to
20 kt. waves 4 to 6 ft occasionally to 8 ft subsiding to 3 to
5 ft. 
.sunday...south winds 10 to 20 kt. waves 2 to 4 ft. 
.monday...northeast winds 10 to 20 kt increasing to 15 to 25 kt.
waves 4 to 6 ft occasionally to 8 ft.  

$$

fzus63 kmqt 220801
glfls 
expires:202610222000;;983261

open lake forecast for lake superior
national weather service marquette mi
400 am edt thu oct 22 2026

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

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

.synopsis...

30.3 inch high pressure becomes centered over northern ontario and 
the upper great lakes this morning. by friday afternoon, the high 
builds to 30.5 inches over southern quebec as a 29.5 inch low moves 
into eastern montana. by saturday afternoon, the high continues into 
new england as the low lifts north of lake winnipeg into northern 
manitoba, strengthening to 29.2 inches by saturday evening. the low 
then lifts northeast to hudson bay saturday night through sunday as 
it drags a 30.2 inch trough across lake superior. high pressure of 
at least 30.6 inches over the canadian prairies on monday pushes 
ridging of at least 30.4 inches over the upper great lakes early 
next week.




lsz266-222000-
lake superior east of a line from manitou island to marquette mi
and west of a line from grand marais mi to the us/canadian border
beyond 5nm from shore-
400 am edt thu oct 22 2026

...dense fog advisory in effect until 11 am edt this morning...

.early this morning...northeast winds 5 to 15 knots. areas of
dense fog. waves calm to 2 feet. 
.today...east winds 5 to 15 knots. patchy fog through early
afternoon. waves calm to 2 feet. 
.tonight...southeast winds 5 to 15 knots becoming south 10 to
20 knots after midnight. patchy fog after midnight. waves
building to 1 to 3 feet. 
.friday...south winds 15 to 25 knots diminishing to 10 to
20 knots in the afternoon. waves 1 to 3 feet. 
.friday night...south winds 15 to 25 knots. waves building to
2 to 4 feet. 
.saturday...south winds 20 to 30 knots increasing to gales to
35 knots by mid afternoon. waves building to 5 to 8 feet
occasionally to 10 feet. 
.saturday night...south winds 20 to 30 knots becoming southwest
15 to 25 knots after midnight. a chance of showers. waves
subsiding to 3 to 5 feet occasionally to 7 feet. 
.sunday...northwest winds 15 to 25 knots becoming north 10 to
20 knots. a chance of showers. waves subsiding to 1 to 3 feet. 
.monday...north winds 10 to 20 knots veering northeast. waves
subsiding to calm to 2 feet. 

$$

fzus63 kmqt 220801
glfls 
expires:202610222000;;983262

open lake forecast for lake superior
national weather service marquette mi
400 am edt thu oct 22 2026

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

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

.synopsis...

30.3 inch high pressure becomes centered over northern ontario and 
the upper great lakes this morning. by friday afternoon, the high 
builds to 30.5 inches over southern quebec as a 29.5 inch low moves 
into eastern montana. by saturday afternoon, the high continues into 
new england as the low lifts north of lake winnipeg into northern 
manitoba, strengthening to 29.2 inches by saturday evening. the low 
then lifts northeast to hudson bay saturday night through sunday as 
it drags a 30.2 inch trough across lake superior. high pressure of 
at least 30.6 inches over the canadian prairies on monday pushes 
ridging of at least 30.4 inches over the upper great lakes early 
next week.




lsz267-222000-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
400 am edt thu oct 22 2026

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

$$

fzus63 kmqt 220801
glfls 
expires:202610222000;;983258

open lake forecast for lake superior
national weather service marquette mi
400 am edt thu oct 22 2026

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

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

.synopsis...

30.3 inch high pressure becomes centered over northern ontario and 
the upper great lakes this morning. by friday afternoon, the high 
builds to 30.5 inches over southern quebec as a 29.5 inch low moves 
into eastern montana. by saturday afternoon, the high continues into 
new england as the low lifts north of lake winnipeg into northern 
manitoba, strengthening to 29.2 inches by saturday evening. the low 
then lifts northeast to hudson bay saturday night through sunday as 
it drags a 30.2 inch trough across lake superior. high pressure of 
at least 30.6 inches over the canadian prairies on monday pushes 
ridging of at least 30.4 inches over the upper great lakes early 
next week.




lsz263-222000-
lake superior from saxon harbor wi to upper entrance to portage
canal mi 5nm off shore to the us/canadian border including isle
royale national park-
400 am edt thu oct 22 2026

.early this morning...east winds less than 10 knots. patchy dense
fog. waves calm to 2 feet. 
.today...east winds less than 10 knots increasing to 5 to
15 knots in the afternoon. patchy fog. waves calm to 2 feet. 
.tonight...east winds 5 to 15 knots veering south late. patchy
fog. waves calm to 2 feet. 
.friday...south winds 5 to 15 knots diminishing to less than
10 knots in the afternoon, then becoming southeast 5 to 15 knots
late. waves calm to 2 feet. 
.friday night...south winds 10 to 20 knots. waves building to
2 to 4 feet. 
.saturday...south winds 15 to 25 knots. waves building to 3 to
6 feet occasionally to 8 feet. 
.saturday night...southwest winds 15 to 25 knots becoming west
10 to 20 knots after midnight. waves subsiding to 2 to 4 feet. 
.sunday...west winds 5 to 15 knots veering north. waves subsiding
to calm to 2 feet, then building to 1 to 3 feet. 
.monday...northeast winds 5 to 15 knots. waves subsiding to calm
to 2 feet. 

$$

fzus63 kmqt 220801
glfls 
expires:202610222000;;983259

open lake forecast for lake superior
national weather service marquette mi
400 am edt thu oct 22 2026

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

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

.synopsis...

30.3 inch high pressure becomes centered over northern ontario and 
the upper great lakes this morning. by friday afternoon, the high 
builds to 30.5 inches over southern quebec as a 29.5 inch low moves 
into eastern montana. by saturday afternoon, the high continues into 
new england as the low lifts north of lake winnipeg into northern 
manitoba, strengthening to 29.2 inches by saturday evening. the low 
then lifts northeast to hudson bay saturday night through sunday as 
it drags a 30.2 inch trough across lake superior. high pressure of 
at least 30.6 inches over the canadian prairies on monday pushes 
ridging of at least 30.4 inches over the upper great lakes early 
next week.




lsz264-222000-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
400 am edt thu oct 22 2026

...dense fog advisory in effect until 11 am edt this morning...

.early this morning...east winds less than 10 knots. areas of
dense fog. waves calm to 2 feet. 
.today...east winds less than 10 knots veering southeast in the
afternoon, then increasing to 5 to 15 knots late. areas of dense
fog through early afternoon, then patchy fog by mid afternoon.
waves calm to 2 feet. 
.tonight...southeast winds 5 to 15 knots veering south late.
patchy fog. waves calm to 2 feet. 
.friday...south winds 5 to 15 knots backing southeast late.
patchy dense fog through early afternoon. waves building to 1 to
3 feet. 
.friday night...south winds 5 to 15 knots increasing to 10 to
20 knots after midnight. waves building to 2 to 4 feet. 
.saturday...south winds 15 to 25 knots. waves building to 4 to
7 feet occasionally to 9 feet. 
.saturday night...southwest winds 10 to 20 knots becoming west
5 to 15 knots after midnight. a chance of showers through
midnight. waves subsiding to 3 to 5 feet occasionally to 7 feet. 
.sunday...west winds 10 to 20 knots becoming north 5 to 15 knots.
waves subsiding to calm to 2 feet, then building to 1 to 3 feet. 
.monday...north winds 5 to 15 knots veering northeast. waves
subsiding to calm to 2 feet. 

$$

fzus63 kmqt 220801
glfls 
expires:202610222000;;983257

open lake forecast for lake superior
national weather service marquette mi
400 am edt thu oct 22 2026

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

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

.synopsis...

30.3 inch high pressure becomes centered over northern ontario and 
the upper great lakes this morning. by friday afternoon, the high 
builds to 30.5 inches over southern quebec as a 29.5 inch low moves 
into eastern montana. by saturday afternoon, the high continues into 
new england as the low lifts north of lake winnipeg into northern 
manitoba, strengthening to 29.2 inches by saturday evening. the low 
then lifts northeast to hudson bay saturday night through sunday as 
it drags a 30.2 inch trough across lake superior. high pressure of 
at least 30.6 inches over the canadian prairies on monday pushes 
ridging of at least 30.4 inches over the upper great lakes early 
next week.




lsz162-222000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
400 am edt thu oct 22 2026 /300 am cdt thu oct 22 2026/

.early this morning...northeast winds 5 to 15 knots. waves calm
to 2 feet. 
.today...east winds 5 to 15 knots. patchy fog. waves calm to
2 feet. 
.tonight...northeast winds 5 to 15 knots. patchy fog. waves calm
to 2 feet. 
.friday...east winds 5 to 15 knots. waves calm to 2 feet. 
.friday night...east winds 5 to 15 knots becoming south 10 to
20 knots after midnight. a slight chance of showers. waves
building to 2 to 4 feet. 
.saturday...south winds 15 to 25 knots veering southwest by mid
afternoon. a chance of showers by mid afternoon. waves building
to 3 to 5 feet occasionally to 7 feet. 
.saturday night...west winds 10 to 20 knots. waves subsiding to
calm to 2 feet. 
.sunday...west winds 5 to 15 knots veering north. waves calm to
2 feet. 
.monday...northeast winds 10 to 20 knots. waves calm to 2 feet. 

$$

fzus63 kmqt 220801
glfls 
expires:202610222000;;983260

open lake forecast for lake superior
national weather service marquette mi
400 am edt thu oct 22 2026

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

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

.synopsis...

30.3 inch high pressure becomes centered over northern ontario and 
the upper great lakes this morning. by friday afternoon, the high 
builds to 30.5 inches over southern quebec as a 29.5 inch low moves 
into eastern montana. by saturday afternoon, the high continues into 
new england as the low lifts north of lake winnipeg into northern 
manitoba, strengthening to 29.2 inches by saturday evening. the low 
then lifts northeast to hudson bay saturday night through sunday as 
it drags a 30.2 inch trough across lake superior. high pressure of 
at least 30.6 inches over the canadian prairies on monday pushes 
ridging of at least 30.4 inches over the upper great lakes early 
next week.




lsz265-222000-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
400 am edt thu oct 22 2026

...dense fog advisory in effect until 11 am edt this morning...

.early this morning...northeast winds 5 to 15 knots. areas of
dense fog. waves calm to 2 feet. 
.today...east winds 5 to 15 knots. areas of dense fog through
early afternoon. waves calm to 2 feet. 
.tonight...southeast winds 10 to 20 knots becoming south 5 to
15 knots after midnight. waves calm to 2 feet. 
.friday...south winds 5 to 15 knots becoming southeast 10 to
20 knots late. waves building to 1 to 3 feet. 
.friday night...south winds 15 to 25 knots. waves building to
2 to 4 feet. 
.saturday...south winds 20 to 30 knots. waves building to 3 to
6 feet occasionally to 8 feet. 
.saturday night...south winds 15 to 25 knots veering west after
midnight. a chance of showers. waves subsiding to 1 to 3 feet. 
.sunday...west winds 15 to 25 knots veering north. waves
subsiding to calm to 2 feet, then building to 1 to 3 feet. 
.monday...north winds 10 to 20 knots veering northeast. waves
subsiding to calm to 2 feet. 

$$