fzus61 kbuf 310802
glflo 
expires:202510311500;;602046

open lake forecast for lake ontario
national weather service buffalo ny
402 am edt fri oct 31 2025

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 29.4 inch low will cross new york state and new 
england today, and to the canadian maritimes tonight and saturday 
while steadily deepening to 28.7 inches. a large 30.3 inch surface 
high will then build across the ohio valley and lower great lakes 
region through sunday, before sliding east and off the mid-atlantic 
coastline on monday. a cold front will slide east across the lake 
monday night through tuesday.


loz062-311500-
lake ontario open waters from the niagara river to hamlin beach-
402 am edt fri oct 31 2025

...gale warning in effect from noon edt today through late
tonight...

.today...northwest winds to 30 knots increasing to 35 knot gales
this afternoon. showers. waves 5 to 9 feet building to 10 to
14 feet. waves occasionally around 18 feet. 
.tonight...northwest gales to 35 knots diminishing to 30 knots.
showers likely early, then a chance of showers late in the
evening. waves 9 to 13 feet subsiding to 5 to 8 feet. waves
occasionally around 16 feet. 
.saturday...northwest winds 15 to 25 knots becoming west and
diminishing to 10 to 15 knots. waves 4 to 7 feet subsiding to
2 to 4 feet. waves occasionally around 9 feet. 
.saturday night...northwest winds 5 to 15 knots. a chance of
showers overnight. waves 1 to 3 feet subsiding to 1 foot or less.
.sunday...northwest winds 5 to 15 knots becoming southwest. a
chance of showers during the day. waves 1 foot or less building
to 1 to 3 feet. 
.monday...southwest winds to 30 knots becoming west. showers.
waves 4 to 7 feet building to 7 to 11 feet. waves occasionally
around 14 feet. 
.tuesday...west winds to 30 knots diminishing to 15 to 25 knots.
a chance of showers during the day. waves 7 to 11 feet subsiding
to 3 to 5 feet. waves occasionally around 14 feet. 

$$

fzus61 kbuf 310802
glflo 
expires:202510311500;;602047

open lake forecast for lake ontario
national weather service buffalo ny
402 am edt fri oct 31 2025

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 29.4 inch low will cross new york state and new 
england today, and to the canadian maritimes tonight and saturday 
while steadily deepening to 28.7 inches. a large 30.3 inch surface 
high will then build across the ohio valley and lower great lakes 
region through sunday, before sliding east and off the mid-atlantic 
coastline on monday. a cold front will slide east across the lake 
monday night through tuesday.


loz063>065-311500-
lake ontario open waters from hamlin beach to the saint lawrence
river-
402 am edt fri oct 31 2025

...gale warning in effect from noon edt today through late
tonight...

.today...northwest winds 15 to 25 knots becoming west and
increasing to 40 knot gales this afternoon. showers. waves 4 to
7 feet building to 12 to 16 feet. waves occasionally around
20 feet. 
.tonight...northwest gales to 35 knots diminishing to 30 knots.
showers in the evening, then a chance of showers after midnight.
waves 13 to 17 feet subsiding to 9 to 12 feet. waves occasionally
around 22 feet. 
.saturday...northwest winds to 30 knots becoming west 15 to
25 knots. a chance of showers. waves 7 to 10 feet subsiding to
3 to 6 feet. waves occasionally around 13 feet. 
.saturday night...northwest winds 15 to 20 knots diminishing to
5 to 15 knots. a chance of showers overnight. waves 3 to 5 feet
subsiding to 1 to 3 feet. 
.sunday...northwest winds 5 to 15 knots becoming south. a chance
of showers during the day. waves 1 foot or less building to 1 to
3 feet. 
.monday...south winds 15 to 25 knots becoming west to 30 knots.
showers. waves 3 to 6 feet building to 9 to 13 feet. waves
occasionally around 16 feet. 
.tuesday...west winds to 30 knots diminishing to 15 to 20 knots.
a chance of showers. waves 10 to 13 feet subsiding to 4 to
7 feet. waves occasionally around 16 feet. 

$$

fzus61 kcle 310736
glfle 
expires:202510311415;;601548

open lake forecast for lake erie
national weather service cleveland oh
336 am edt fri oct 31 2025

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...
low pressure will deepen to 29.10 inches as it approaches 
northern new england today. a trough averaging 29.70 inches will 
linger behind the low through saturday before high pressure 30.20 
inches will build across the region on sunday into monday. a 
trough averaging 29.70 inches will dip south on tuesday.


lez164>166-311415-
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-
336 am edt fri oct 31 2025

.today...northwest winds to 30 knots becoming west. a slight
chance of showers late. waves 5 to 8 feet building to 7 to
10 feet. waves occasionally around 13 feet. 
.tonight...west winds to 30 knots diminishing to 15 to 25 knots.
a slight chance of showers through the early overnight. waves
7 to 10 feet subsiding to 3 to 6 feet. waves occasionally around
13 feet. 
.saturday...west winds 15 to 20 knots diminishing to 5 to
15 knots. a chance of showers in the afternoon. waves 3 to 5 feet
subsiding to 1 to 3 feet. 
.saturday night...west winds 5 to 10 knots becoming southwest. a
chance of showers. waves 2 feet or less. 
.sunday...southwest winds 5 to 15 knots increasing to 15 to
20 knots. waves 2 feet or less building to 3 to 5 feet. 
.monday...southwest winds to 30 knots becoming west. showers
likely during the day. waves 5 to 8 feet building to 7 to
10 feet, then subsiding to 5 to 8 feet. waves occasionally around
13 feet. 
.tuesday...west winds 15 to 25 knots becoming southwest. waves
4 to 7 feet subsiding to 2 to 4 feet. waves occasionally around
9 feet. 

$$

fzus61 kcle 310736
glfle 
expires:202510311415;;601549

open lake forecast for lake erie
national weather service cleveland oh
336 am edt fri oct 31 2025

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...
low pressure will deepen to 29.10 inches as it approaches 
northern new england today. a trough averaging 29.70 inches will 
linger behind the low through saturday before high pressure 30.20 
inches will build across the region on sunday into monday. a 
trough averaging 29.70 inches will dip south on tuesday.


lez061-167>169-311415-
ripley to buffalo ny extending from 5nm 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-
conneaut oh to ripley ny beyond 5 nm off shoreline to us-
canadian border-
336 am edt fri oct 31 2025

.today...northwest winds to 30 knots becoming west. showers
likely early, then a chance of showers. a slight chance of
showers late. waves 5 to 9 feet building to 8 to 12 feet. waves
occasionally around 15 feet. 
.tonight...west winds to 30 knots becoming northwest and
diminishing to 15 to 20 knots. a slight chance of showers. waves
7 to 11 feet subsiding to 5 to 8 feet. waves occasionally around
14 feet. 
.saturday...west winds 15 to 20 knots diminishing to 10 to
15 knots. a chance of showers in the afternoon. waves 3 to 5 feet
subsiding to 2 to 4 feet. 
.saturday night...west winds 10 knots or less becoming east. a
chance of showers. waves 1 to 3 feet subsiding to 1 foot or less.
.sunday...south winds 5 to 15 knots becoming southwest 15 to
20 knots. a chance of showers during the day. waves 2 feet or
less building to 3 to 5 feet. 
.monday...southwest winds to 30 knots becoming west. showers
likely during the day, then a chance of showers monday night.
waves 5 to 8 feet building to 8 to 11 feet, then subsiding to
6 to 9 feet. waves occasionally around 14 feet. 
.tuesday...west winds 15 to 25 knots becoming southwest and
diminishing to 10 to 15 knots. waves 4 to 7 feet subsiding to
2 to 4 feet. waves occasionally around 9 feet. 

$$

fzus61 kcle 310736
glfle 
expires:202510311415;;601547

open lake forecast for lake erie
national weather service cleveland oh
336 am edt fri oct 31 2025

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...
low pressure will deepen to 29.10 inches as it approaches 
northern new england today. a trough averaging 29.70 inches will 
linger behind the low through saturday before high pressure 30.20 
inches will build across the region on sunday into monday. a 
trough averaging 29.70 inches will dip south on tuesday.


lez162-163-311415-
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 am edt fri oct 31 2025

.today...northwest winds 15 to 25 knots becoming west. waves 2 to
4 feet building to 3 to 5 feet. 
.tonight...west winds 15 to 25 knots diminishing to 10 to
15 knots. waves 3 to 5 feet subsiding to 1 to 3 feet. 
.saturday...west winds 5 to 15 knots becoming southwest. waves
2 feet or less. 
.saturday night...southwest winds 10 knots or less becoming west.
waves 1 foot or less. 
.sunday...west winds 10 knots or less becoming southwest and
increasing to 15 to 20 knots. waves 1 foot or less building to
1 to 3 feet. 
.monday...southwest winds 15 to 25 knots becoming west. a chance
of showers during the day. waves 2 to 4 feet. 
.tuesday...west winds 15 to 20 knots becoming southwest 10 to
15 knots. waves 1 to 3 feet. 

$$

fzus63 kdtx 310735
glfsc 
expires:202510311545;;601513

lake st clair forecast
national weather service detroit/pontiac mi
335 am edt fri oct 31 2025

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...low pressure, 29.40 inches, will continue to lift off
to the northeast and towards the new england region through
friday. north to northwest winds will persist through the day.


lcz460-311545-
lake st clair-
335 am edt fri oct 31 2025

...small craft advisory in effect through this evening...

.today...northwest winds 15 to 20 knots. partly sunny. waves 1 to 3
feet.
.tonight...west winds 15 to 20 knots diminishing to 10 to 15 knots
in the late evening and overnight. mostly cloudy this evening
becoming partly cloudy. waves 2 feet or less.
.saturday...west winds 5 to 10 knots. mostly sunny. waves 2 feet or
less.
.saturday night...light and variable winds. partly cloudy. waves 2
feet or less.
.sunday...light and variable winds becoming southwest 5 to 10 knots
in the afternoon...then increasing to 10 to 15 knots in the evening.
mostly clear. waves 2 feet or less.
.monday...west winds 20 to 25 knots with gusts to 30 knots. partly
cloudy. a chance of light rain. waves 2 to 4 feet. a small craft
advisory may be needed.
.tuesday...west winds 20 to 25 knots. mostly clear. waves 1 to 3
feet.

$$

fzus63 kdtx 310735
glflh 
expires:202510311545;;601509

open lake forecast for lake huron
national weather service detroit/pontiac mi
335 am edt fri oct 31 2025

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...low pressure, 29.40 inches, will continue to lift off
to the northeast and towards the new england region through
friday. north to northwest winds will persist through the day.


lhz361-311545-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
335 am edt fri oct 31 2025

.today...north winds 15 to 20 knots. waves 3 to 5 feet. 
.tonight...north winds 15 to 20 knots decreasing to 10 to
15 knots in the late evening and overnight. waves 3 to 5 feet
subsiding to 1 to 3 feet early in the morning. 
.saturday...north winds 5 to 10 knots. waves 2 feet or less. 
.saturday night...northwest winds 5 to 10 knots early in the
evening becoming light and variable. waves 2 feet or less. 
.sunday...west winds 5 to 10 knots backing to the southwest late
in the morning...then increasing to 10 to 15 knots late in the
afternoon increasing to 20 to 25 knots with gusts to around
30 knots late in the evening. a chance of rain late in the
afternoon. waves 2 feet or less building to 3 to 5 feet late in
the afternoon. 
.monday...southwest winds 20 to 25 knots with gusts to 40 knot
gales becoming west to 30 knots with gusts to 40 knot gales early
in the evening...then decreasing to 20 to 25 knots with gusts to
around 30 knots in the late evening and early morning. rain
likely early in the morning...then a chance of rain early in the
evening. waves 5 to 7 feet building to 8 to 12 feet. waves
occasionally around 15 feet. 
.tuesday...west winds 15 to 20 knots with gusts to around
30 knots decreasing to 10 to 15 knots in the late evening and
early morning. a chance of. waves 6 to 9 feet subsiding to 2 to
4 feet in the late evening and early morning. waves occasionally
around 12 feet. 


$$

fzus63 kdtx 310735
glflh 
expires:202510311545;;601510

open lake forecast for lake huron
national weather service detroit/pontiac mi
335 am edt fri oct 31 2025

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...low pressure, 29.40 inches, will continue to lift off
to the northeast and towards the new england region through
friday. north to northwest winds will persist through the day.


lhz362-311545-
lake huron from presque isle light to sturgeon point mi beyond
5nm off shore-
335 am edt fri oct 31 2025

.today...north winds 15 to 20 knots becoming northwest 20 to
25 knots in the late morning and afternoon. waves 6 to 9 feet.
waves occasionally around 12 feet. 
.tonight...northwest winds 15 to 20 knots becoming north 10 to
15 knots after midnight. waves 5 to 7 feet subsiding to 3 to
5 feet early in the morning. waves occasionally around 10 feet. 
.saturday...north winds 10 to 15 knots decreasing to 5 to
10 knots in the late morning and afternoon. waves 2 to 4 feet
subsiding to 1 to 3 feet in the late morning and afternoon. 
.saturday night...northwest winds 5 to 10 knots until early
morning becoming light and variable. waves 2 feet or less. 
.sunday...southwest winds 5 to 10 knots increasing to 20 to
25 knots with gusts to around 30 knots. rain likely late in the
evening. waves 2 feet or less building to 8 to 12 feet. waves
occasionally around 15 feet. 
.monday...southwest winds 20 to 25 knots becoming west to
30 knots. gusts to 35 knot gales. rain likely early in the
morning...then a chance of rain until early evening. waves 10 to
14 feet. waves occasionally around 18 feet. 
.tuesday...west winds 20 to 25 knots with gusts to around
30 knots decreasing to 10 to 15 knots. a chance of. waves 6 to
9 feet subsiding to 3 to 5 feet in the late evening and early
morning. waves occasionally around 12 feet. 


$$

fzus63 kdtx 310735
glflh 
expires:202510311545;;601511

open lake forecast for lake huron
national weather service detroit/pontiac mi
335 am edt fri oct 31 2025

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...low pressure, 29.40 inches, will continue to lift off
to the northeast and towards the new england region through
friday. north to northwest winds will persist through the day.


lhz363-462>464-311545-
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-
335 am edt fri oct 31 2025

.today...northwest winds 20 to 25 knots. gusts to 30 knots in the
afternoon. waves 8 to 12 feet. waves occasionally around 15 feet.
.tonight...northwest winds 20 to 25 knots decreasing to 10 to
15 knots. waves 6 to 9 feet subsiding to 4 to 6 feet early in the
morning. waves occasionally around 12 feet. 
.saturday...west winds 10 to 15 knots becoming northwest 5 to
10 knots early in the afternoon. waves 3 to 5 feet subsiding to
2 to 4 feet early in the afternoon. 
.saturday night...north winds 5 to 10 knots. a chance of rain.
waves 2 feet or less. 
.sunday...south winds 5 to 10 knots becoming southwest 20 to
25 knots with gusts to around 30 knots. a chance of rain late in
the evening. waves 2 feet or less building to 6 to 9 feet. waves
occasionally around 12 feet. 
.monday...southwest winds to 30 knots becoming west 20 to
25 knots in the late evening and early morning. gusts to 35 knot
gales. a chance of rain. waves 10 to 14 feet. waves occasionally
around 18 feet. 
.tuesday...west winds 20 to 25 knots decreasing to 10 to
15 knots. waves 6 to 9 feet subsiding to 3 to 5 feet in the late
evening and early morning. waves occasionally around 12 feet. 


$$

fzus63 kmkx 310801
glflm 
expires:202510311515;;602012

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
301 am cdt fri oct 31 2025

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...

29.2 inch low pressure is centered over the northeastern united 
states this morning, resulting in breezy northwest winds across lake 
michigan. northwest winds will continue through today as weak low 
pressure of 29.9 inches moves into wisconsin from the northern great 
plains. winds will turn northerly tonight as the low shifts south 
and 30.3 inch high pressure builds into the northern great plains. 
lake effect showers will continue into this afternoon across the 
eastern half of lake michigan, with rain chances expanding to the 
entirety of the waters tonight as the aforementioned low pressure 
passes by. precip chances will linger through the day on saturday. 
rain showers developing over the southern third of lake michigan 
could produce an isolated waterspout or two, though widespread 
waterspout activity is not anticipated at this time. northerly winds 
will decrease saturday night as high pressure moves across the open 
waters.

winds will shift out of the southwest and quickly increase during 
the day on sunday, when 29.2 inch low pressure is forecast to 
develop across the canadian great plains. southwest winds will 
continue to strengthen sunday evening and night as the area of low 
pressure advances toward the hudson bay. gales are possible during 
this time frame, with trends being monitored for potential gale 
warnings in coming forecasts. a cold front will cross lake michigan 
during the day monday, resulting in a west to northwest wind shift 
and additional gusts near gale force. winds will weaken monday night 
as 30.2 inch high pressure crosses the waters. widespread areas of 
rain are likely sunday night.


lmz080-669-671-673-675-777-779-870-872-874-876-878-311515-
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 fri oct 31 2025

sheboygan wi to pentwater mi south...

.today...northwest winds 10 to 20 kt. isolated rain showers this
morning. waves 3 to 5 ft. 
.tonight...northwest winds 10 to 20 kt diminishing to 10 to
15 kt. isolated rain showers in the evening, then scattered rain
showers overnight. waves 3 to 5 ft subsiding to 1 to 3 ft. 
.saturday...northwest winds 10 to 15 kt becoming north. rain
showers likely. waves 2 to 4 ft. 
.saturday night...north winds 10 to 15 kt diminishing to 5 to
10 kt. chance of rain showers. waves 1 to 3 ft. 
.sunday...west winds 10 to 15 kt becoming southwest 15 to 25 kt
in the afternoon. waves 1 to 2 ft building to 3 to 5 ft. 
.sunday night...southwest winds to 30 kt increasing to gales to
35 kt. chance of showers. waves 8 to 11 ft occasionally to 14 ft
building to 10 to 14 ft occasionally to 18 ft. 
.monday...west gales to 35 kt. waves 10 to 14 ft occasionally to
18 ft. 
.tuesday...west winds 10 to 20 kt becoming southwest. waves 5 to
8 ft occasionally to 10 ft subsiding to 3 to 5 ft.  

$$

fzus63 kmkx 310801
glflm 
expires:202510311515;;602011

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
301 am cdt fri oct 31 2025

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...

29.2 inch low pressure is centered over the northeastern united 
states this morning, resulting in breezy northwest winds across lake 
michigan. northwest winds will continue through today as weak low 
pressure of 29.9 inches moves into wisconsin from the northern great 
plains. winds will turn northerly tonight as the low shifts south 
and 30.3 inch high pressure builds into the northern great plains. 
lake effect showers will continue into this afternoon across the 
eastern half of lake michigan, with rain chances expanding to the 
entirety of the waters tonight as the aforementioned low pressure 
passes by. precip chances will linger through the day on saturday. 
rain showers developing over the southern third of lake michigan 
could produce an isolated waterspout or two, though widespread 
waterspout activity is not anticipated at this time. northerly winds 
will decrease saturday night as high pressure moves across the open 
waters.

winds will shift out of the southwest and quickly increase during 
the day on sunday, when 29.2 inch low pressure is forecast to 
develop across the canadian great plains. southwest winds will 
continue to strengthen sunday evening and night as the area of low 
pressure advances toward the hudson bay. gales are possible during 
this time frame, with trends being monitored for potential gale 
warnings in coming forecasts. a cold front will cross lake michigan 
during the day monday, resulting in a west to northwest wind shift 
and additional gusts near gale force. winds will weaken monday night 
as 30.2 inch high pressure crosses the waters. widespread areas of 
rain are likely sunday night.


lmz261-362-364-366-563-565-567-868-311515-
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 fri oct 31 2025

sheboygan wi to pentwater mi north...

.today...northwest winds 10 to 20 kt becoming north. isolated
rain showers. waves 2 to 4 ft. 
.tonight...north winds 10 to 20 kt diminishing to 10 to 15 kt.
scattered rain showers. waves 1 to 3 ft. 
.saturday...northeast winds 10 to 15 kt becoming north. chance of
rain showers. waves 1 to 3 ft. 
.saturday night...north winds 10 to 15 kt becoming northwest.
chance of rain showers in the evening. waves 1 to 3 ft. 
.sunday...southwest winds 10 to 20 kt increasing to 30 kt in the
afternoon. waves 1 to 2 ft building to 4 to 7 ft occasionally to
9 ft. 
.sunday night...southwest gales to 35 kt. chance of rain showers.
waves 8 to 11 ft occasionally to 14 ft building to 10 to 14 ft 
occasionally to 18 ft. 
.monday...west gales to 35 kt. chance of rain showers. waves
10 to 14 ft occasionally to 18 ft subsiding to 8 to 11 ft
occasionally to 14 ft. 
.tuesday...west winds 15 to 25 kt. waves 4 to 6 ft occasionally
to 8 ft subsiding to 3 to 5 ft.  

$$

fzus63 kmqt 310801
glfls 
expires:202510312000;;602014

open lake forecast for lake superior
national weather service marquette mi
401 am edt fri oct 31 2025

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...

deep 29.2 inch low pressure currently over connecticut is sending 
29.8 inch troughing over the lake early this morning. as the parent 
low continues to deepen to to 28.8 inches into this evening while 
moving into quebec, expect 29.8 to 29.9 inch troughing to persist 
over the lake. the eastern low deepens further to 28.7 inches by 
saturday morning over the canadian maritimes while 30.1 inch ridging 
builds over lake superior thanks to a 30.2 inch high stretching 
across the central plains. this high settles eastward into the 
midwest at 30.3 inches by sunday while a 29.3 inch low moves over 
northern manitoba. this low will pull a 29.6 inch trough across lake 
superior on monday, followed by 30.0 inch ridging into tuesday.



lsz162-312000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
401 am edt fri oct 31 2025 /301 am cdt fri oct 31 2025/

.early this morning...northeast winds 5 to 15 knots. a chance of
showers. waves calm to 2 feet. 
.today...northeast winds 5 to 15 knots increasing to 10 to
20 knots in the afternoon. a chance of showers. waves building to
2 to 4 feet. 
.tonight...northeast winds 10 to 20 knots backing north late. a
slight chance of rain showers through midnight. waves subsiding
to 1 to 3 feet. 
.saturday...north winds 10 to 20 knots diminishing to 5 to
15 knots in the afternoon, then backing west late. a slight
chance of rain showers through early afternoon. waves subsiding
to calm to 2 feet. 
.saturday night...southwest winds 5 to 15 knots increasing to
10 to 20 knots after midnight. waves building to 1 to 3 feet. 
.sunday...southwest gales to 40 knots. a chance of rain showers.
waves building to 6 to 10 feet occasionally to 13 feet. 
.sunday night...southwest gales to 35 knots becoming west 20 to
30 knots after midnight. a chance of showers. waves subsiding to
3 to 6 feet occasionally to 8 feet. 
.monday...west gales to 35 knots diminishing to 20 to 30 knots.
waves building to 4 to 7 feet occasionally to 9 feet, then
subsiding to 1 to 3 feet. 
.tuesday...southwest winds 10 to 20 knots backing south. a chance
of rain showers. waves subsiding to calm to 2 feet. 

$$

fzus63 kmqt 310801
glfls 
expires:202510312000;;602015

open lake forecast for lake superior
national weather service marquette mi
401 am edt fri oct 31 2025

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...

deep 29.2 inch low pressure currently over connecticut is sending 
29.8 inch troughing over the lake early this morning. as the parent 
low continues to deepen to to 28.8 inches into this evening while 
moving into quebec, expect 29.8 to 29.9 inch troughing to persist 
over the lake. the eastern low deepens further to 28.7 inches by 
saturday morning over the canadian maritimes while 30.1 inch ridging 
builds over lake superior thanks to a 30.2 inch high stretching 
across the central plains. this high settles eastward into the 
midwest at 30.3 inches by sunday while a 29.3 inch low moves over 
northern manitoba. this low will pull a 29.6 inch trough across lake 
superior on monday, followed by 30.0 inch ridging into tuesday.



lsz263-312000-
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 am edt fri oct 31 2025

.early this morning...northeast winds 5 to 15 knots. a chance of
showers. waves calm to 2 feet. 
.today...northeast winds 5 to 15 knots increasing to 10 to
20 knots in the afternoon. a chance of rain showers. waves
building to 3 to 5 feet occasionally to 7 feet. 
.tonight...north winds 10 to 20 knots diminishing to 5 to
15 knots late. a slight chance of rain showers. waves subsiding
to 2 to 4 feet. 
.saturday...north winds 5 to 15 knots backing northwest late. a
slight chance of rain showers through early afternoon. waves
subsiding to calm to 2 feet. 
.saturday night...southwest winds 5 to 15 knots increasing to
15 to 25 knots after midnight. waves building to 1 to 3 feet. 
.sunday...southwest gales to 40 knots. a chance of rain showers
by mid afternoon. waves building to 8 to 12 feet occasionally to
15 feet. 
.sunday night...southwest gales to 40 knots becoming west gales
to 35 knots after midnight. a chance of showers. waves subsiding
to 6 to 9 feet occasionally to 11 feet, then building to 7 to
10 feet occasionally to 13 feet. 
.monday...west gales to 40 knots. waves building to 9 to 12 feet
occasionally to 15 feet, then subsiding to 4 to 7 feet
occasionally to 9 feet. 
.tuesday...west winds 20 to 30 knots becoming south 10 to
20 knots. a chance of rain showers. waves subsiding to calm to
2 feet. 

$$

fzus63 kmqt 310801
glfls 
expires:202510312000;;602016

open lake forecast for lake superior
national weather service marquette mi
401 am edt fri oct 31 2025

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...

deep 29.2 inch low pressure currently over connecticut is sending 
29.8 inch troughing over the lake early this morning. as the parent 
low continues to deepen to to 28.8 inches into this evening while 
moving into quebec, expect 29.8 to 29.9 inch troughing to persist 
over the lake. the eastern low deepens further to 28.7 inches by 
saturday morning over the canadian maritimes while 30.1 inch ridging 
builds over lake superior thanks to a 30.2 inch high stretching 
across the central plains. this high settles eastward into the 
midwest at 30.3 inches by sunday while a 29.3 inch low moves over 
northern manitoba. this low will pull a 29.6 inch trough across lake 
superior on monday, followed by 30.0 inch ridging into tuesday.



lsz264-312000-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
401 am edt fri oct 31 2025

.early this morning...northeast winds 10 to 20 knots. a slight
chance of showers. waves 1 to 3 feet. 
.today...northeast winds 10 to 20 knots backing north late. a
chance of rain showers. waves building to 3 to 5 feet
occasionally to 7 feet. 
.tonight...north winds 10 to 20 knots veering northeast after
midnight, then becoming north 5 to 15 knots late. a slight chance
of rain showers. waves subsiding to 2 to 4 feet. 
.saturday...north winds 5 to 15 knots backing northwest late. a
slight chance of rain showers. waves subsiding to calm to 2 feet.
.saturday night...west winds 5 to 15 knots becoming southwest
10 to 20 knots after midnight. waves building to 1 to 3 feet. 
.sunday...southwest gales to 40 knots. a chance of rain showers
by mid afternoon. waves building to 8 to 11 feet occasionally to
14 feet. 
.sunday night...southwest gales to 40 knots veering west after
midnight. a chance of showers. waves subsiding to 7 to 10 feet
occasionally to 13 feet, then building to 8 to 11 feet
occasionally to 14 feet. 
.monday...west gales to 40 knots. waves building to 9 to 12 feet
occasionally to 15 feet, then subsiding to 4 to 7 feet
occasionally to 9 feet. 
.tuesday...west winds 20 to 30 knots becoming south 10 to
20 knots. a chance of rain showers. waves subsiding to 1 to
3 feet. 

$$

fzus63 kmqt 310801
glfls 
expires:202510312000;;602017

open lake forecast for lake superior
national weather service marquette mi
401 am edt fri oct 31 2025

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...

deep 29.2 inch low pressure currently over connecticut is sending 
29.8 inch troughing over the lake early this morning. as the parent 
low continues to deepen to to 28.8 inches into this evening while 
moving into quebec, expect 29.8 to 29.9 inch troughing to persist 
over the lake. the eastern low deepens further to 28.7 inches by 
saturday morning over the canadian maritimes while 30.1 inch ridging 
builds over lake superior thanks to a 30.2 inch high stretching 
across the central plains. this high settles eastward into the 
midwest at 30.3 inches by sunday while a 29.3 inch low moves over 
northern manitoba. this low will pull a 29.6 inch trough across lake 
superior on monday, followed by 30.0 inch ridging into tuesday.



lsz265-312000-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
401 am edt fri oct 31 2025

.early this morning...northeast winds 10 to 20 knots. a slight
chance of showers. waves calm to 2 feet building to 1 to 3 feet. 
.today...northeast winds 15 to 25 knots backing north late. a
chance of showers. waves building to 3 to 5 feet occasionally to
7 feet. 
.tonight...north winds 15 to 25 knots becoming northeast 10 to
20 knots after midnight, then backing north late. a chance of
rain showers. waves subsiding to 2 to 4 feet. 
.saturday...north winds 10 to 20 knots. a chance of rain showers.
waves subsiding to calm to 2 feet. 
.saturday night...west winds 5 to 15 knots backing southwest
after midnight. a slight chance of rain showers through midnight.
waves calm to 2 feet. 
.sunday...southwest winds 15 to 25 knots increasing to 20 to
30 knots by mid afternoon. a chance of rain showers by mid
afternoon. waves building to 2 to 4 feet. 
.sunday night...southwest gales to 40 knots. showers likely
through midnight, then a chance of showers after midnight. waves
building to 4 to 7 feet occasionally to 9 feet. 
.monday...west gales to 40 knots. a chance of showers. waves
building to 5 to 8 feet occasionally to 10 feet, then subsiding
to 3 to 5 feet occasionally to 7 feet. 
.tuesday...west winds 20 to 30 knots becoming south 15 to
25 knots. a chance of showers. waves subsiding to calm to 2 feet.

$$

fzus63 kmqt 310801
glfls 
expires:202510312000;;602018

open lake forecast for lake superior
national weather service marquette mi
401 am edt fri oct 31 2025

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...

deep 29.2 inch low pressure currently over connecticut is sending 
29.8 inch troughing over the lake early this morning. as the parent 
low continues to deepen to to 28.8 inches into this evening while 
moving into quebec, expect 29.8 to 29.9 inch troughing to persist 
over the lake. the eastern low deepens further to 28.7 inches by 
saturday morning over the canadian maritimes while 30.1 inch ridging 
builds over lake superior thanks to a 30.2 inch high stretching 
across the central plains. this high settles eastward into the 
midwest at 30.3 inches by sunday while a 29.3 inch low moves over 
northern manitoba. this low will pull a 29.6 inch trough across lake 
superior on monday, followed by 30.0 inch ridging into tuesday.



lsz266-312000-
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 am edt fri oct 31 2025

.early this morning...northeast winds 15 to 25 knots. a slight
chance of showers. waves 1 to 3 feet building to 2 to 4 feet. 
.today...north winds 15 to 25 knots. a chance of showers. waves
building to 3 to 5 feet occasionally to 7 feet. 
.tonight...north winds 15 to 25 knots diminishing to 10 to
20 knots late. a chance of rain showers. waves building to 3 to
6 feet occasionally to 8 feet, then subsiding to 2 to 4 feet. 
.saturday...north winds 10 to 20 knots diminishing to 5 to
15 knots late. a chance of rain showers. waves subsiding to calm
to 2 feet. 
.saturday night...northwest winds 5 to 15 knots backing southwest
after midnight. a chance of rain showers. waves calm to 2 feet. 
.sunday...southwest winds 15 to 25 knots increasing to gales to
35 knots by mid afternoon. a chance of rain showers. waves
building to 5 to 8 feet occasionally to 10 feet. 
.sunday night...southwest gales to 35 knots. showers. waves
building to 8 to 11 feet occasionally to 14 feet. 
.monday...west gales to 40 knots. a chance of showers. waves
building to 10 to 14 feet occasionally to 18 feet, then subsiding
to 6 to 9 feet occasionally to 11 feet. 
.tuesday...west winds 20 to 30 knots becoming south 15 to
25 knots. a chance of showers. waves subsiding to 1 to 3 feet. 

$$

fzus63 kmqt 310801
glfls 
expires:202510312000;;602019

open lake forecast for lake superior
national weather service marquette mi
401 am edt fri oct 31 2025

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...

deep 29.2 inch low pressure currently over connecticut is sending 
29.8 inch troughing over the lake early this morning. as the parent 
low continues to deepen to to 28.8 inches into this evening while 
moving into quebec, expect 29.8 to 29.9 inch troughing to persist 
over the lake. the eastern low deepens further to 28.7 inches by 
saturday morning over the canadian maritimes while 30.1 inch ridging 
builds over lake superior thanks to a 30.2 inch high stretching 
across the central plains. this high settles eastward into the 
midwest at 30.3 inches by sunday while a 29.3 inch low moves over 
northern manitoba. this low will pull a 29.6 inch trough across lake 
superior on monday, followed by 30.0 inch ridging into tuesday.



lsz267-312000-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
401 am edt fri oct 31 2025

.early this morning...northeast winds 15 to 25 knots. waves 2 to
4 feet. 
.today...north winds 15 to 25 knots. a chance of rain showers.
waves building to 3 to 5 feet occasionally to 7 feet. 
.tonight...north winds 15 to 25 knots diminishing to 10 to
20 knots late. a chance of rain showers. waves subsiding to 1 to
3 feet. 
.saturday...north winds 10 to 20 knots. a slight chance of rain
showers. waves subsiding to calm to 2 feet. 
.saturday night...northwest winds 5 to 15 knots backing west
after midnight. a chance of rain showers. waves calm to 2 feet. 
.sunday...southwest winds 10 to 20 knots increasing to 20 to
30 knots by mid afternoon. a chance of rain showers. waves
building to 4 to 7 feet occasionally to 9 feet. 
.sunday night...southwest gales to 35 knots. showers. waves
building to 6 to 9 feet occasionally to 11 feet. 
.monday...west gales to 40 knots becoming northwest gales to
35 knots. a chance of showers. waves building to 10 to 14 feet
occasionally to 18 feet, then subsiding to 7 to 10 feet
occasionally to 13 feet. 
.tuesday...west winds 20 to 30 knots becoming south 15 to
25 knots. a chance of showers. waves subsiding to 1 to 3 feet. 

$$