fzus61 kbuf 301403
glflo 
expires:202610302100;;969430

open lake forecast for lake ontario
national weather service buffalo ny
1003 am edt fri oct 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 30.4 inch high will settle over the lower great 
lakes tonight. 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, with a 30.0 inch high building east across the eastern 
great lakes region thursday through friday, before sliding east 
into new england by saturday.


loz063>065-302100-
lake ontario open waters from hamlin beach to the saint lawrence
river-
1003 am edt fri oct 30 2026

.this afternoon...northwest winds 15 to 20 knots. waves 3 to
6 feet. 
.tonight...northwest winds 15 to 20 knots becoming north 10 to
15 knots. waves 3 to 6 feet subsiding to 2 to 4 feet. 
.saturday...north winds 10 knots or less becoming west. waves
2 feet or less. 
.saturday night...west winds 5 to 10 knots becoming south. waves
1 foot or less. 
.sunday...south winds 5 to 10 knots becoming southwest. waves
2 feet or less. 
.monday...southwest winds 10 knots or less becoming south. waves
2 feet or less. 
.tuesday...southeast winds 5 to 15 knots becoming south 15 to
20 knots. a chance of showers tuesday night. waves 1 to 3 feet. 

$$

fzus61 kbuf 301403
glflo 
expires:202610302100;;969429

open lake forecast for lake ontario
national weather service buffalo ny
1003 am edt fri oct 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 30.4 inch high will settle over the lower great 
lakes tonight. 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, with a 30.0 inch high building east across the eastern 
great lakes region thursday through friday, before sliding east 
into new england by saturday.


loz062-302100-
lake ontario open waters from the niagara river to hamlin beach-
1003 am edt fri oct 30 2026

.this afternoon...northwest winds 15 to 20 knots. waves 3 to
5 feet. 
.tonight...northwest winds 15 to 20 knots becoming north 5 to
15 knots. waves 2 to 4 feet subsiding to 1 to 3 feet. 
.saturday...northwest winds less than 10 knots becoming west.
waves 1 foot or less. 
.saturday night...southwest winds less than 10 knots 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 south. waves
1 foot or less. 
.tuesday...southeast winds 5 to 10 knots becoming south. a chance
of showers during the day. waves 2 feet or less. 

$$

fzus61 kcle 301335
glfle 
expires:202610302015;;968628

open lake forecast for lake erie
national weather service cleveland oh
935 am edt fri oct 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... 
behind a departing cold front this morning, high pressure 30.40 
inches will build southeast over the area and persist into the 
weekend. a warm front will lift north across the lake on sunday into 
sunday night. the area will linger in the warm sector into the start 
of next week.


lez165>168-302015-
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-geneva-on-
the-lake to conneaut oh beyond 5 nm off shoreline to us-
canadian border-
935 am edt fri oct 30 2026

.this afternoon...northwest winds 5 to 15 knots. waves 1 to
3 feet. 
.tonight...north winds 5 to 10 knots becoming northeast. waves
2 feet or less. 
.saturday...east winds 5 to 10 knots. waves 1 foot or less. 
.saturday night...east winds 5 to 10 knots becoming southeast.
waves 2 feet or less. 
.sunday...southeast winds 5 to 10 knots becoming south. waves
1 foot or less. 
.monday...south winds 5 to 15 knots. a chance of showers monday
night. waves 2 feet or less. 
.tuesday...south winds 10 to 15 knots increasing to 15 to
20 knots. waves 1 to 3 feet building to 2 to 4 feet. 

$$

fzus61 kcle 301335
glfle 
expires:202610302015;;968629

open lake forecast for lake erie
national weather service cleveland oh
935 am edt fri oct 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... 
behind a departing cold front this morning, high pressure 30.40 
inches will build southeast over the area and persist into the 
weekend. a warm front will lift north across the lake on sunday into 
sunday night. the area will linger in the warm sector into the start 
of next week.


lez061-169-302015-
ripley to buffalo ny extending from 5nm off shoreline to us-
canadian border-
conneaut oh to ripley ny beyond 5 nm off shoreline to us-
canadian border-
935 am edt fri oct 30 2026

.this afternoon...northwest winds 10 to 15 knots. waves 1 to
2 feet. 
.tonight...northwest winds 5 to 15 knots becoming north less than
10 knots. waves 2 feet or less. 
.saturday...north winds less than 10 knots. waves 1 foot or less.
.saturday night...southeast winds 10 knots or less. waves 1 foot
or less. 
.sunday...southeast winds 5 to 10 knots becoming south. waves
1 foot or less. 
.monday...southwest winds 5 to 10 knots becoming south. waves
1 foot or less. 
.tuesday...south winds 5 to 15 knots increasing to 15 to
20 knots. waves 1 to 3 feet. 

$$

fzus61 kcle 301335
glfle 
expires:202610302015;;968627

open lake forecast for lake erie
national weather service cleveland oh
935 am edt fri oct 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... 
behind a departing cold front this morning, high pressure 30.40 
inches will build southeast over the area and persist into the 
weekend. a warm front will lift north across the lake on sunday into 
sunday night. the area will linger in the warm sector into the start 
of next week.


lez162>164-302015-
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-
935 am edt fri oct 30 2026

.this afternoon...north winds 10 knots or less. waves 2 feet or
less. 
.tonight...north winds 10 knots or less becoming east. waves
1 foot or less. 
.saturday...southeast winds 5 to 10 knots becoming east. waves
1 foot or less. 
.saturday night...east winds around 10 knots becoming southeast.
waves 2 feet or less. 
.sunday...south winds 10 knots or less. waves 1 foot or less. 
.monday...south winds 5 to 15 knots. a chance of showers monday
night. waves 2 feet or less. 
.tuesday...south winds 10 to 15 knots increasing to 15 to
20 knots. a chance of showers during the day. waves 1 to 3 feet. 

$$

fzus63 kdtx 301344
glfsc 
expires:202610302145;;968784

lake st clair forecast
national weather service detroit/pontiac mi
944 am edt fri oct 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...brisk northwest flow this morning continues across
lake huron in the wake of a cold front. high pressure, 30.40
inches, will then build in tonight and through the weekend,
relaxing wind speeds and bringing in a period of lighter winds.


lcz460-302145-
lake st clair-
944 am edt fri oct 30 2026

.rest of today...northwest winds 10 to 15 knots. sunny in the 
late morning and early afternoon becoming partly sunny. waves 2 
feet or less.
.tonight...light and variable winds. partly cloudy. waves 2 feet or
less.
.saturday...southeast winds 5 to 10 knots. partly sunny. waves 2
feet or less.
.saturday night...southeast winds 5 to 10 knots. mostly cloudy.
waves 2 feet or less.
.sunday...south winds 5 to 10 knots becoming light and variable.
mostly cloudy. waves 2 feet or less.
.monday...southeast winds 10 to 15 knots. partly cloudy. waves 2
feet or less.
.tuesday...southeast winds 15 to 20 knots. mostly cloudy with a
chance of light rain. waves 1 to 3 feet.

$$

fzus63 kdtx 301344
glflh 
expires:202610302145;;968833

open lake forecast for lake huron
national weather service detroit/pontiac mi
944 am edt fri oct 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...brisk northwest flow this morning continues across
lake huron in the wake of a cold front. high pressure, 30.40
inches, will then build in tonight and through the weekend,
relaxing wind speeds and bringing in a period of lighter winds.


lhz361>363-302145-
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-
lake huron from sturgeon point to alabaster mi beyond 5nm off
shore-
944 am edt fri oct 30 2026

.rest of today...northwest winds 15 to 20 knots with gusts to
around 30 knots decreasing to 10 to 15 knots late in the
afternoon. waves 4 to 6 feet. waves occasionally around 8 feet. 
.tonight...northwest winds 10 to 15 knots becoming light and
variable. waves 2 to 4 feet subsiding to 1 to 3 feet after
midnight. 
.saturday...light and variable winds becoming south 5 to 10 knots
early in the afternoon. waves 2 feet or less. 
.saturday night...south winds 5 to 10 knots. waves 2 feet or
less. 
.sunday...south winds 5 to 10 knots. waves 2 feet or less. 
.monday...light and variable winds becoming south 5 to 10 knots
in the late morning and early afternoon...then backing to the
southeast . a chance of. waves 2 feet or less. 
.tuesday...south winds 10 to 15 knots becoming southeast 15 to
20 knots with gusts to around 30 knots. rain likely...then a
chance of rain by midnight. waves 2 to 4 feet building to 5 to
7 feet. waves occasionally around 10 feet. 


$$

fzus63 kdtx 301344
glflh 
expires:202610302145;;968834

open lake forecast for lake huron
national weather service detroit/pontiac mi
944 am edt fri oct 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...brisk northwest flow this morning continues across
lake huron in the wake of a cold front. high pressure, 30.40
inches, will then build in tonight and through the weekend,
relaxing wind speeds and bringing in a period of lighter winds.


lhz462>464-302145-
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-
944 am edt fri oct 30 2026

.rest of today...northwest winds 10 to 20 knots. waves 3 to 5 
feet. 
.tonight...northwest winds 5 to 10 knots  becoming light and
variable. waves 1 to 3 feet. 
.saturday...light and variable winds becoming south 5 to 10 knots
in the late morning and afternoon. waves 2 feet or less. 
.saturday night...south winds 5 to 10 knots increasing to 10 to
15 knots after midnight. waves 2 feet or less. 
.sunday...south winds 10 to 15 knots decreasing to 5 to 10 knots.
waves 2 feet or less. 
.monday...south winds 5 to 10 knots backing to the southeast
early in the evening...then becoming south 10 to 15 knots by
midnight. a chance of. waves 2 feet or less. 
.tuesday...south winds 10 to 15 knots becoming southeast 15 to
20 knots. a chance of rain. waves 3 to 5 feet. 


$$

fzus63 kdtx 300740
glflh 
expires:202610301545;;955247

open lake forecast for lake huron
national weather service detroit/pontiac mi
340 am edt fri oct 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...brisk northwest flow this morning continues across
lake huron in the wake of a cold front. high pressure, 30.40
inches, will then build in tonight and through the weekend,
relaxing wind speeds and bringing in a period of lighter winds.


lhz362-363-301545-
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-
340 am edt fri oct 30 2026

.today...northwest winds 15 to 20 knots decreasing to 10 to
15 knots late in the afternoon. waves 4 to 6 feet. 
.tonight...northwest winds 10 to 15 knots becoming light and
variable. waves 2 to 4 feet subsiding to 1 to 3 feet after
midnight. waves occasionally around 8 feet. 
.saturday...light and variable winds becoming south 5 to 10 knots
early in the afternoon. waves 2 feet or less. 
.saturday night...south winds 5 to 10 knots. waves 2 feet or
less. 
.sunday...south winds 10 to 15 knots decreasing to 5 to 10 knots.
waves 2 feet or less. 
.monday...light and variable winds becoming south 5 to 10 knots
in the late morning and early afternoon...then backing to the
southeast early in the evening becoming south 10 to 15 knots by
midnight. a chance of. waves 2 feet or less. 
.tuesday...south winds 10 to 15 knots becoming southeast 15 to
20 knots with gusts to around 30 knots. rain likely...then a
chance of rain by midnight. waves 3 to 5 feet building to 4 to
6 feet . waves occasionally around 8 feet. 


$$

fzus63 kdtx 300740
glflh 
expires:202610301545;;955246

open lake forecast for lake huron
national weather service detroit/pontiac mi
340 am edt fri oct 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...brisk northwest flow this morning continues across
lake huron in the wake of a cold front. high pressure, 30.40
inches, will then build in tonight and through the weekend,
relaxing wind speeds and bringing in a period of lighter winds.


lhz361-301545-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
340 am edt fri oct 30 2026

.today...northwest winds 15 to 20 knots decreasing to 10 to
15 knots in the afternoon. waves 3 to 5 feet. 
.tonight...northwest winds 10 to 15 knots becoming light and
variable. waves 1 to 3 feet. 
.saturday...light and variable winds becoming south 5 to 10 knots
in the late morning and early afternoon...then becoming light and
variable early in the afternoon. waves 2 feet or less. 
.saturday night...light and variable winds becoming south 5 to
10 knots in the late evening and overnight. waves 2 feet or less.
.sunday...south winds 5 to 10 knots becoming light and variable.
waves 2 feet or less. 
.monday...light and variable winds becoming southeast 5 to
10 knots . a chance of. waves 2 feet or less. 
.tuesday...southeast winds 10 to 15 knots. gusts to 30 knots
until early evening. a chance of rain early in the morning...then
rain likely. waves 3 to 5 feet building to 4 to 6 feet . waves
occasionally around 8 feet. 


$$

fzus63 kmkx 301350
glflm 
expires:202610302130;;969087

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
850 am cdt fri oct 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...

high pressure around 30.4 inches will work its way across the 
upper great lakes region today with winds turning more 
northeasterly and lessening as it moves over lake michigan. then 
winds become southeasterly later tonight as high pressure 
slowly exits. moderate southeasterly winds return for saturday as
low pressure around 29.8 inches moves into the central plains. 
light to moderate southeasterly to southerly winds then persist 
into monday, increasing for tuesday as low pressure approaches. 
gales may be possible at times early next week.


lmz080-669-671-673-675-777-779-870-872-874-876-878-302130-
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-
850 am cdt fri oct 30 2026

sheboygan wi to pentwater mi south...

.rest of today...northeast winds 10 to 20 kt diminishing to 5 to
10 kt. waves 2 to 4 ft subsiding to 1 to 3 ft. 
.tonight...northeast winds 10 to 15 kt becoming southeast. slight
chance of showers overnight. waves 1 to 3 ft. 
.saturday...southeast winds 10 to 20 kt. chance of showers. waves
3 to 5 ft. 
.saturday night...southeast winds 10 to 20 kt becoming south
10 to 15 kt. waves 3 to 5 ft subsiding to 2 to 4 ft. 
.sunday...southeast winds 10 to 15 kt. waves 1 to 3 ft. 
.sunday night...southeast winds 10 to 15 kt. waves 1 to 3 ft. 
.monday...southeast winds 10 to 20 kt. waves 2 to 4 ft building
to 3 to 5 ft. 
.tuesday...south gales to 40 kt. chance of showers. waves 7 to
10 ft occasionally to 13 ft building to 8 to 11 ft occasionally
to 14 ft.  

$$

fzus63 kmkx 301350
glflm 
expires:202610302130;;969086

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
850 am cdt fri oct 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...

high pressure around 30.4 inches will work its way across the 
upper great lakes region today with winds turning more 
northeasterly and lessening as it moves over lake michigan. then 
winds become southeasterly later tonight as high pressure 
slowly exits. moderate southeasterly winds return for saturday as
low pressure around 29.8 inches moves into the central plains. 
light to moderate southeasterly to southerly winds then persist 
into monday, increasing for tuesday as low pressure approaches. 
gales may be possible at times early next week.


lmz261-362-364-366-563-565-567-868-302130-
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-
850 am cdt fri oct 30 2026

sheboygan wi to pentwater mi north...

.rest of today...northwest winds 10 to 20 kt. waves 1 to 3 ft
subsiding to 1 to 2 ft. 
.tonight...northwest winds 10 to 15 kt backing to south. waves
1 to 2 ft. 
.saturday...south winds 10 to 15 kt increasing to 10 to 20 kt.
waves 1 to 3 ft building to 3 to 5 ft. 
.saturday night...south winds 10 to 15 kt. waves 3 to 5 ft
subsiding to 2 to 4 ft. 
.sunday...south winds 10 to 15 kt becoming southwest. waves 1 to
3 ft. 
.sunday night...south winds 5 to 10 kt. waves 1 to 2 ft. 
.monday...south winds 10 to 15 kt becoming southeast 10 to 20 kt.
waves 1 to 3 ft building to 3 to 5 ft. 
.tuesday...southeast gales to 35 kt becoming south gales to
40 kt. showers likely. waves 7 to 10 ft occasionally to 13 ft
building to 8 to 11 ft occasionally to 14 ft.  

$$

fzus63 kmqt 301401
glfls 
expires:202610302000;;969367

open lake forecast for lake superior
national weather service marquette mi
1001 am edt fri oct 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 30.3 inch high stretching from alberta to the upper great lakes 
this morning will continue building to 30.4 inches over the upper 
great lakes today. high pressure then shifts to the lower great 
lakes by saturday morning and strengthens to 30.5 inches, with 
ridging of around 30.2 inches lingering over lake superior through 
the weekend as the high gradually shifts to the eastern seaboard. a 
29.6 inch colorado low develops on monday and moves into minnesota 
by tuesday morning. this low passes north of lake superior into 
northern ontario tuesday night at 29.5 inches, dragging troughing of 
at least 29.6 inches over the western half of the lake tuesday into 
wednesday.




lsz162-302000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1001 am edt fri oct 30 2026 /901 am cdt fri oct 30 2026/

.rest of today...west winds 5 to 15 knots backing southwest late.
waves calm to 2 feet. 
.tonight...southwest winds 5 to 15 knots becoming south less than
10 knots after midnight. waves calm to 2 feet. 
.saturday...south winds less than 10 knots becoming east 5 to
15 knots in the afternoon. a slight chance of rain showers by mid
afternoon. waves calm to 2 feet. 
.saturday night...east winds 5 to 15 knots becoming southwest
less than 10 knots after midnight. a chance of showers. waves
calm to 2 feet. 
.sunday...southwest winds 5 to 15 knots. waves calm to 2 feet. 
.sunday night...south winds less than 10 knots. waves calm to
2 feet. 
.monday...east winds 10 to 20 knots increasing to 20 to 30 knots.
a chance of showers, then showers. waves building to 3 to 6 feet
occasionally to 8 feet. 
.tuesday...east winds 20 to 30 knots becoming west 15 to
25 knots. showers, then a chance of showers. waves subsiding to
1 to 3 feet. 

$$

fzus63 kmqt 301401
glfls 
expires:202610302000;;969368

open lake forecast for lake superior
national weather service marquette mi
1001 am edt fri oct 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 30.3 inch high stretching from alberta to the upper great lakes 
this morning will continue building to 30.4 inches over the upper 
great lakes today. high pressure then shifts to the lower great 
lakes by saturday morning and strengthens to 30.5 inches, with 
ridging of around 30.2 inches lingering over lake superior through 
the weekend as the high gradually shifts to the eastern seaboard. a 
29.6 inch colorado low develops on monday and moves into minnesota 
by tuesday morning. this low passes north of lake superior into 
northern ontario tuesday night at 29.5 inches, dragging troughing of 
at least 29.6 inches over the western half of the lake tuesday into 
wednesday.




lsz263-302000-
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-
1001 am edt fri oct 30 2026

.rest of today...northwest winds 5 to 15 knots backing west in
the afternoon. waves calm to 2 feet. 
.tonight...west winds 5 to 15 knots becoming southwest less than
10 knots late. waves calm to 2 feet. 
.saturday...south winds less than 10 knots backing east late.
waves calm to 2 feet. 
.saturday night...south winds 5 to 15 knots veering southwest
after midnight. a chance of showers. waves calm to 2 feet. 
.sunday...southwest winds 5 to 15 knots. waves calm to 2 feet. 
.sunday night...southwest winds 5 to 15 knots diminishing to less
than 10 knots after midnight. waves calm to 2 feet. 
.monday...southeast winds 5 to 15 knots becoming east 15 to
25 knots. showers likely. waves building to 3 to 5 feet
occasionally to 7 feet. 
.tuesday...southeast gales to 35 knots becoming southwest 15 to
25 knots. showers likely. waves building to 3 to 6 feet
occasionally to 8 feet, then subsiding to 2 to 4 feet. 

$$

fzus63 kmqt 301401
glfls 
expires:202610302000;;969369

open lake forecast for lake superior
national weather service marquette mi
1001 am edt fri oct 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 30.3 inch high stretching from alberta to the upper great lakes 
this morning will continue building to 30.4 inches over the upper 
great lakes today. high pressure then shifts to the lower great 
lakes by saturday morning and strengthens to 30.5 inches, with 
ridging of around 30.2 inches lingering over lake superior through 
the weekend as the high gradually shifts to the eastern seaboard. a 
29.6 inch colorado low develops on monday and moves into minnesota 
by tuesday morning. this low passes north of lake superior into 
northern ontario tuesday night at 29.5 inches, dragging troughing of 
at least 29.6 inches over the western half of the lake tuesday into 
wednesday.




lsz264-302000-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
1001 am edt fri oct 30 2026

.rest of today...northwest winds 5 to 15 knots becoming west
10 to 20 knots in the afternoon, then diminishing to 5 to
15 knots late. waves 1 to 3 feet subsiding to calm to 2 feet. 
.tonight...west winds 5 to 15 knots diminishing to less than
10 knots late. waves calm to 2 feet. 
.saturday...southwest winds less than 10 knots backing south
late. waves calm to 2 feet. 
.saturday night...south winds 5 to 15 knots veering southwest
after midnight. a slight chance of showers. waves calm to 2 feet.
.sunday...southwest winds 5 to 15 knots. waves calm to 2 feet. 
.sunday night...southwest winds 5 to 15 knots diminishing to less
than 10 knots after midnight. waves calm to 2 feet. 
.monday...southeast winds 5 to 15 knots increasing to 15 to
25 knots. showers likely. waves building to 2 to 4 feet. 
.tuesday...southeast gales to 35 knots becoming south 15 to
25 knots. showers likely. waves building to 4 to 7 feet
occasionally to 9 feet, then subsiding to 2 to 4 feet. 

$$

fzus63 kmqt 301401
glfls 
expires:202610302000;;969370

open lake forecast for lake superior
national weather service marquette mi
1001 am edt fri oct 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 30.3 inch high stretching from alberta to the upper great lakes 
this morning will continue building to 30.4 inches over the upper 
great lakes today. high pressure then shifts to the lower great 
lakes by saturday morning and strengthens to 30.5 inches, with 
ridging of around 30.2 inches lingering over lake superior through 
the weekend as the high gradually shifts to the eastern seaboard. a 
29.6 inch colorado low develops on monday and moves into minnesota 
by tuesday morning. this low passes north of lake superior into 
northern ontario tuesday night at 29.5 inches, dragging troughing of 
at least 29.6 inches over the western half of the lake tuesday into 
wednesday.




lsz265-302000-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
1001 am edt fri oct 30 2026

.rest of today...northwest winds 15 to 25 knots becoming west
10 to 20 knots late. waves 1 to 3 feet subsiding to calm to
2 feet. 
.tonight...west winds 5 to 15 knots backing southwest late. waves
calm to 2 feet. 
.saturday...southwest winds 5 to 15 knots backing southeast late.
waves calm to 2 feet. 
.saturday night...south winds 10 to 20 knots. a slight chance of
showers. waves calm to 2 feet. 
.sunday...southwest winds 10 to 20 knots becoming south 5 to
15 knots by mid afternoon. waves calm to 2 feet. 
.sunday night...south winds 5 to 15 knots veering southwest after
midnight. waves calm to 2 feet. 
.monday...southeast winds 5 to 15 knots increasing to 20 to
30 knots. showers likely. waves building to 2 to 4 feet. 
.tuesday...southeast gales to 35 knots becoming south 20 to
30 knots. showers. waves building to 4 to 7 feet occasionally to
9 feet, then subsiding to 1 to 3 feet. 

$$

fzus63 kmqt 301401
glfls 
expires:202610302000;;969371

open lake forecast for lake superior
national weather service marquette mi
1001 am edt fri oct 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 30.3 inch high stretching from alberta to the upper great lakes 
this morning will continue building to 30.4 inches over the upper 
great lakes today. high pressure then shifts to the lower great 
lakes by saturday morning and strengthens to 30.5 inches, with 
ridging of around 30.2 inches lingering over lake superior through 
the weekend as the high gradually shifts to the eastern seaboard. a 
29.6 inch colorado low develops on monday and moves into minnesota 
by tuesday morning. this low passes north of lake superior into 
northern ontario tuesday night at 29.5 inches, dragging troughing of 
at least 29.6 inches over the western half of the lake tuesday into 
wednesday.




lsz266-302000-
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-
1001 am edt fri oct 30 2026

.rest of today...northwest winds 15 to 25 knots diminishing to
10 to 20 knots late. waves 3 to 5 feet occasionally to 7 feet
subsiding to 2 to 4 feet. 
.tonight...west winds 5 to 15 knots increasing to 10 to 20 knots
late. waves subsiding to calm to 2 feet. 
.saturday...southwest winds 5 to 15 knots backing south late.
waves calm to 2 feet. 
.saturday night...south winds 10 to 20 knots. a slight chance of
showers. waves calm to 2 feet. 
.sunday...south winds 10 to 20 knots becoming southwest 5 to
15 knots by mid afternoon. waves calm to 2 feet. 
.sunday night...south winds 5 to 15 knots veering southwest after
midnight. waves calm to 2 feet. 
.monday...south winds 5 to 15 knots becoming southeast 20 to
30 knots. showers likely. waves building to 3 to 5 feet
occasionally to 7 feet. 
.tuesday...southeast gales to 35 knots becoming south 20 to
30 knots. showers. waves building to 4 to 7 feet occasionally to
9 feet, then subsiding to 2 to 4 feet. 

$$

fzus63 kmqt 301401
glfls 
expires:202610302000;;969372

open lake forecast for lake superior
national weather service marquette mi
1001 am edt fri oct 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 30.3 inch high stretching from alberta to the upper great lakes 
this morning will continue building to 30.4 inches over the upper 
great lakes today. high pressure then shifts to the lower great 
lakes by saturday morning and strengthens to 30.5 inches, with 
ridging of around 30.2 inches lingering over lake superior through 
the weekend as the high gradually shifts to the eastern seaboard. a 
29.6 inch colorado low develops on monday and moves into minnesota 
by tuesday morning. this low passes north of lake superior into 
northern ontario tuesday night at 29.5 inches, dragging troughing of 
at least 29.6 inches over the western half of the lake tuesday into 
wednesday.




lsz267-302000-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
1001 am edt fri oct 30 2026

.rest of today...northwest winds 15 to 25 knots. a chance of rain
showers by mid afternoon. waves 3 to 6 feet occasionally to
8 feet subsiding to 2 to 4 feet. 
.tonight...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 diminishing to 5 to
15 knots in the afternoon, then backing south late. waves calm to
2 feet. 
.saturday night...south winds 10 to 20 knots. a slight chance of
showers after midnight. waves calm to 2 feet. 
.sunday...south winds 10 to 20 knots diminishing to 5 to 15 knots
by mid afternoon. a slight chance of showers. waves calm to
2 feet. 
.sunday night...south winds 5 to 15 knots veering southwest after
midnight. waves calm to 2 feet. 
.monday...southeast winds 5 to 15 knots increasing to 15 to
25 knots. waves building to 2 to 4 feet. 
.tuesday...southeast gales to 35 knots becoming south 20 to
30 knots. showers. waves building to 3 to 6 feet occasionally to
8 feet, then subsiding to 2 to 4 feet. 

$$