fzus61 kbuf 310202
glflo 
expires:202510310900;;588423

open lake forecast for lake ontario
national weather service buffalo ny
1002 pm edt thu oct 30 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 tonight 
before heading to new england on friday, and to the canadian 
maritimes friday night 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>065-310900-
lake ontario open waters from hamlin beach to the saint lawrence
river-
1002 pm edt thu oct 30 2025

...gale warning in effect from friday afternoon through late
friday night...

.overnight...northeast winds to 30 knots becoming north
15 to 25 knots. showers. waves 7 to 10 feet subsiding to 5 to
8 feet. waves occasionally around 13 feet. 
.friday...north winds 15 to 25 knots becoming northwest and
increasing to 40 knot gales in the afternoon. showers. waves 4 to
7 feet building to 12 to 16 feet. waves occasionally around
20 feet. 
.friday night...northwest gales to 35 knots diminishing to
30 knots. showers. waves 12 to 16 feet subsiding to 10 to
14 feet. waves occasionally around 20 feet. 
.saturday...northwest winds 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 5 to 15 knots. a chance of
showers. waves 3 to 5 feet subsiding to 1 to 3 feet. 
.sunday...northwest winds 5 to 15 knots becoming southwest 15 to
20 knots. a chance of showers. waves 2 feet or less building to
2 to 4 feet. 
.monday...southwest winds 15 to 25 knots becoming west to
30 knots. showers. waves 3 to 6 feet building to 10 to 13 feet.
waves occasionally around 16 feet. 
.tuesday...west winds to 30 knots diminishing to 15 to 25 knots.
a chance of showers. waves 9 to 13 feet subsiding to 4 to 7 feet.
waves occasionally around 16 feet. 

$$

fzus61 kbuf 310202
glflo 
expires:202510310900;;588422

open lake forecast for lake ontario
national weather service buffalo ny
1002 pm edt thu oct 30 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 tonight 
before heading to new england on friday, and to the canadian 
maritimes friday night 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.


loz062-310900-
lake ontario open waters from the niagara river to hamlin beach-
1002 pm edt thu oct 30 2025

...gale warning in effect from friday afternoon through late
friday night...

.overnight...northeast winds to 30 knots becoming north.
showers. waves 7 to 11 feet subsiding to 5 to 8 feet. waves
occasionally around 14 feet. 
.friday...northwest winds to 30 knots increasing to 35 knot gales
in the afternoon. showers. waves 5 to 9 feet building to 9 to
13 feet. waves occasionally around 16 feet. 
.friday night...northwest gales to 35 knots diminishing to
30 knots. showers likely. waves 9 to 13 feet subsiding to 6 to
9 feet. waves occasionally around 16 feet. 
.saturday...northwest winds 15 to 25 knots diminishing to 10 to
15 knots. a chance of showers. 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. waves 1 to 3 feet subsiding to 1 foot or less. 
.sunday...northwest winds 5 to 15 knots becoming southwest 15 to
20 knots. a chance of showers. waves 2 feet or less building to
2 to 4 feet. 
.monday...southwest winds to 30 knots becoming west. showers
likely. 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. waves 7 to 10 feet subsiding to 3 to 5 feet.
waves occasionally around 13 feet. 

$$

fzus61 kcle 310130
glfle 
expires:202510310815;;587709

open lake forecast for lake erie
national weather service cleveland oh
930 pm edt thu oct 30 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 on friday. 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.


lez162-163-310815-
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-
930 pm edt thu oct 30 2025

.rest of tonight...north winds to 30 knots becoming northwest. a
chance of showers late this evening, then a slight chance of
showers after midnight. waves 4 to 7 feet subsiding to 3 to
6 feet. waves occasionally around 9 feet. 
.friday...northwest winds 20 to 25 knots becoming west. a slight
chance of showers late. waves 2 to 4 feet. 
.friday night...west winds 15 to 25 knots diminishing to 10 to
15 knots. waves 2 to 4 feet subsiding to 1 to 3 feet. 
.saturday...west winds 5 to 10 knots. waves 2 feet or less. 
.saturday night...west winds 5 to 10 knots. waves 1 foot or less.
.sunday...west winds 5 to 15 knots becoming southwest 15 to
20 knots. waves 1 to 3 feet. 
.monday...southwest winds 15 to 25 knots becoming west. waves
2 to 4 feet. 
.tuesday...west winds 15 to 20 knots becoming southwest 10 to
15 knots. waves 1 to 3 feet. 

$$

fzus61 kcle 310130
glfle 
expires:202510310815;;587711

open lake forecast for lake erie
national weather service cleveland oh
930 pm edt thu oct 30 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 on friday. 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>169-310815-
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-
930 pm edt thu oct 30 2025

...gale warning in effect until 2 am edt friday...

.rest of tonight...north gales to 35 knots becoming northwest and
diminishing to 30 knots after midnight. showers. waves 7 to
11 feet. waves occasionally around 14 feet. 
.friday...northwest winds to 30 knots becoming west and
increasing to 35 knot gales in the afternoon. showers early, then
a chance of showers. a slight chance of showers late. waves 7 to
11 feet. waves occasionally around 14 feet. 
.friday night...northwest gales to 35 knots becoming west and
diminishing to 15 to 25 knots. a chance of showers in the
evening, then showers likely overnight. waves 7 to 11 feet
subsiding to 3 to 5 feet. waves occasionally around 14 feet. 
.saturday...west winds 15 to 20 knots diminishing to 10 to
15 knots. showers likely. waves 3 to 5 feet subsiding to 2 to
4 feet. 
.saturday night...west winds 5 to 10 knots. showers likely. waves
1 to 3 feet. 
.sunday...west winds 5 to 10 knots becoming southwest and
increasing to 15 to 25 knots. a chance of showers. waves 1 to
3 feet building to 3 to 6 feet. 
.monday...southwest gales to 35 knots becoming west and
diminishing to 30 knots. a chance of showers. waves 7 to 10 feet
building to 9 to 12 feet, then subsiding to 6 to 9 feet. waves
occasionally around 15 feet. 
.tuesday...west winds 15 to 25 knots. waves 4 to 7 feet subsiding
to 3 to 5 feet. waves occasionally around 9 feet. 

$$

fzus61 kcle 310130
glfle 
expires:202510310815;;587710

open lake forecast for lake erie
national weather service cleveland oh
930 pm edt thu oct 30 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 on friday. 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>166-310815-
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-
930 pm edt thu oct 30 2025

...gale warning in effect until 2 am edt friday...

.rest of tonight...north gales to 35 knots becoming northwest and
diminishing to 30 knots after midnight. showers, then a chance of
showers late. waves 8 to 12 feet. waves occasionally around
15 feet. 
.friday...northwest winds to 30 knots becoming west. a slight
chance of showers. waves 6 to 10 feet. waves occasionally around
13 feet. 
.friday night...west winds to 30 knots diminishing to 15 to
25 knots. showers likely. 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 10 to
15 knots. a chance of showers. waves 2 to 4 feet subsiding to
1 to 3 feet. 
.saturday night...west winds 5 to 10 knots. a chance of showers.
waves 2 feet or less. 
.sunday...southwest winds 5 to 10 knots increasing to 15 to
25 knots. waves 1 to 3 feet building to 3 to 6 feet. 
.monday...southwest gales to 40 knots becoming west and
diminishing to 30 knots. a chance of showers during the day.
waves 7 to 10 feet building to 8 to 12 feet, then subsiding to
6 to 9 feet. waves occasionally around 15 feet. 
.tuesday...west winds 15 to 25 knots. waves 4 to 7 feet subsiding
to 2 to 4 feet. waves occasionally around 9 feet. 

$$

fzus63 kdtx 310201
glflh 
expires:202510311015;;588363

open lake forecast for lake huron
national weather service detroit/pontiac mi
1001 pm edt thu oct 30 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.


lhz362-311015-
lake huron from presque isle light to sturgeon point mi beyond
5nm off shore-
1001 pm edt thu oct 30 2025

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


$$

fzus63 kdtx 310201
glflh 
expires:202510311015;;588364

open lake forecast for lake huron
national weather service detroit/pontiac mi
1001 pm edt thu oct 30 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>464-311015-
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-
1001 pm edt thu oct 30 2025

.rest of tonight...north winds 15 to 20 knots increasing to 20 to
25 knots early in the morning. waves 6 to 9 feet. waves
occasionally around 12 feet. 
.friday...northwest winds 20 to 25 knots. waves 6 to 9 feet.
waves occasionally around 12 feet. 
.friday night...northwest winds 20 to 25 knots decreasing to
10 to 15 knots. a chance of showers. waves 6 to 9 feet. waves
occasionally around 12 feet. 
.saturday...northwest winds 10 to 15 knots decreasing to 5 to
10 knots early in the afternoon. a chance of showers in the
morning. waves 3 to 5 feet subsiding to 1 to 3 feet early in the
afternoon. 
.saturday night...northwest winds 5 to 10 knots. a chance of
showers. waves 2 feet or less. 
.sunday...west winds 5 to 10 knots becoming southwest 20 to
25 knots with gusts to around 30 knots. a chance of showers.
waves 2 feet or less building to 8 to 12 feet. waves occasionally
around 15 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 8 to 12 feet. waves occasionally
around 15 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 kdtx 310201
glfsc 
expires:202510311015;;588401

lake st clair forecast
national weather service detroit/pontiac mi
1001 pm edt thu oct 30 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.


lcz460-311015-
lake st clair-
1001 pm edt thu oct 30 2025

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

.rest of tonight...northwest winds 15 to 20 knots. mostly cloudy. a
chance of light rain this evening. waves 1 to 3 feet.
.friday...northwest winds 15 to 20 knots. partly sunny. waves 1 to 3
feet.
.friday night...northwest winds 15 to 20 knots becoming west 10 to
15 knots after midnight. mostly cloudy early in the evening becoming
partly cloudy. waves 1 to 3 feet.
.saturday...west winds 5 to 10 knots. partly sunny with a chance of
light showers. waves 2 feet or less.
.saturday night...northwest winds 5 to 10 knots early in the evening
becoming light and variable. mostly cloudy early in the evening
becoming partly cloudy. a chance of light showers early in the
evening. waves 2 feet or less.
.sunday...southwest winds 5 to 10 knots increasing to 10 to 15 knots
in the evening. partly sunny in the morning becoming mostly clear.
waves 2 feet or less.
.monday...west winds 20 to 25 knots with gusts to 30 knots. mostly
clear. 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 310201
glflh 
expires:202510311015;;588362

open lake forecast for lake huron
national weather service detroit/pontiac mi
1001 pm edt thu oct 30 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.


lhz361-311015-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
1001 pm edt thu oct 30 2025

.rest of tonight...north winds 10 to 15 knots. waves 1 to 3 feet
building to 2 to 4 feet early in the morning. 
.friday...north winds 10 to 15 knots increasing to 15 to 20 knots
in the late morning and afternoon. waves 3 to 5 feet. 
.friday night...northwest winds 15 to 20 knots. waves 3 to 5 feet
subsiding to 1 to 3 feet after midnight. 
.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 becoming southwest 10 to
15 knots late in the morning...then increasing to 15 to 20 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. rain likely late in the evening. waves 2 feet or less
building to 4 to 6 feet late in the afternoon. waves occasionally
around 8 feet. 
.monday...southwest winds 20 to 25 knots with gusts to 40 knot
gales veering to the west with gusts to 40 knot gales until early
morning. rain likely early in the morning...then a chance of rain
until early evening. waves 4 to 6 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. waves 5 to 7 feet. waves occasionally around
10 feet. 


$$

fzus63 kmkx 310158
glflm 
expires:202510310915;;588192

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
858 pm cdt thu oct 30 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...

low pressure around 29.8 inches over southwestern ontario and low
pressure around 29.4 inches over the northeast u.s. will combine
to produce continued northwesterly winds throughout tonight and
friday. on friday, a cold front from the low in ontario will
progress northwest to southeast across the open waters, bringing
briefly gusty northwesterly winds. 

winds will diminish into saturday as low pressure exits and high 
pressure around 30.2 inches builds into the central great plains 
and middle mississippi valley. expect light and variable winds 
saturday night before gusty southwesterly winds develop ahead of a
low pressure system tracking across far southern canada sunday 
into monday. gales are possible during this time frame, especially
in the northern half of the lake. low pressure will drag a strong
cold front through the lake on monday, shifting winds to 
northwesterly and producing additional gale potential through 
monday night.


lmz080-669-671-673-675-777-779-870-872-874-876-878-310915-
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-
858 pm cdt thu oct 30 2025

sheboygan wi to pentwater mi south...

.rest of tonight...north winds 10 to 20 kt becoming northwest.
slight chance of rain showers through early evening. waves 4 to
6 ft occasionally to 8 ft. 
.friday...northwest winds 10 to 20 kt. slight chance of rain
showers in the morning. waves 4 to 6 ft occasionally to 8 ft.
.friday night...northwest winds 10 to 20 kt diminishing to 10 to
15 kt. chance of rain showers. waves 4 to 6 ft occasionally to
8 ft subsiding to 2 to 4 ft. 
.saturday...northwest winds 10 to 20 kt. rain showers likely.
waves 2 to 4 ft. 
.saturday night...north winds 10 to 15 kt becoming northwest 5 to
10 kt. chance of rain showers in the evening. waves 2 to 4 ft. 
.sunday...west winds 10 to 15 kt becoming southwest 15 to 25 kt
in the afternoon. waves 1 to 3 ft building to 3 to 5 ft. 
.sunday night...southwest winds to 30 kt. chance of showers.
waves 6 to 9 ft occasionally to 12 ft building to 7 to 10 ft
occasionally to 13 ft. 
.monday...west winds to 30 kt. waves 7 to 10 ft occasionally to
13 ft. 
.tuesday...west winds 10 to 20 kt. waves 4 to 6 ft occasionally
to 8 ft subsiding to 3 to 5 ft.  

$$

fzus63 kmkx 310158
glflm 
expires:202510310915;;588191

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
858 pm cdt thu oct 30 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...

low pressure around 29.8 inches over southwestern ontario and low
pressure around 29.4 inches over the northeast u.s. will combine
to produce continued northwesterly winds throughout tonight and
friday. on friday, a cold front from the low in ontario will
progress northwest to southeast across the open waters, bringing
briefly gusty northwesterly winds. 

winds will diminish into saturday as low pressure exits and high 
pressure around 30.2 inches builds into the central great plains 
and middle mississippi valley. expect light and variable winds 
saturday night before gusty southwesterly winds develop ahead of a
low pressure system tracking across far southern canada sunday 
into monday. gales are possible during this time frame, especially
in the northern half of the lake. low pressure will drag a strong
cold front through the lake on monday, shifting winds to 
northwesterly and producing additional gale potential through 
monday night.


lmz261-362-364-366-563-565-567-868-310915-
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-
858 pm cdt thu oct 30 2025

sheboygan wi to pentwater mi north...

.rest of tonight...north winds 10 to 15 kt increasing to 10 to
20 kt. waves 2 to 4 ft. 
.friday...north winds 10 to 20 kt. slight chance of rain showers
in the afternoon. waves 3 to 5 ft. 
.friday night...north winds 10 to 20 kt diminishing to 10 to
15 kt. chance of rain showers. waves 2 to 4 ft. 
.saturday...north winds 10 to 15 kt. chance of rain showers.
waves 2 to 4 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 6 ft occasionally to
8 ft. 
.sunday night...southwest gales to 40 kt. chance of showers.
waves 6 to 9 ft occasionally to 12 ft building to 7 to 10 ft
occasionally to 13 ft. 
.monday...west winds to 30 kt. chance of rain showers. waves 6 to
9 ft occasionally to 12 ft. 
.tuesday...west winds 15 to 25 kt. waves 3 to 5 ft.  

$$

fzus63 kmqt 310201
glfls 
expires:202510310800;;588367

open lake forecast for lake superior
national weather service marquette mi
1001 pm edt thu oct 30 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...

29.9 inch troughing remains over lake superior tonight as a low 
deepens to 29.4 inches over the mid atlantic and a 29.8 inch low 
moves southeast from manitoba toward the upper great lakes. the mid 
atlantic low will continue deepening as it absorbs the other low, 
reaching 28.9 inches over maine by friday afternoon, with troughing 
deepening to 29.8 inches over lake superior. 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.



lsz162-310800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1001 pm edt thu oct 30 2025 /901 pm cdt thu oct 30 2025/

.rest of tonight...north winds 5 to 15 knots veering northeast
late. a chance of showers after midnight. waves calm to 2 feet. 
.friday...northeast winds 10 to 20 knots increasing to 15 to
25 knots late. a chance of showers. waves building to 3 to 5 feet
occasionally to 7 feet. 
.friday night...northeast winds 10 to 20 knots backing north
after midnight. a chance of rain showers. waves subsiding to 1 to
3 feet. 
.saturday...north winds 5 to 15 knots backing west by mid
afternoon. a slight chance of rain showers through early
afternoon. 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 45 knots. a chance of rain showers
by mid afternoon. waves building to 9 to 12 feet occasionally to
15 feet, then subsiding to 7 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 40 knots. waves building to 5 to 8 feet
occasionally to 10 feet, then subsiding to 2 to 4 feet. 
.tuesday...west winds 15 to 25 knots becoming southwest 10 to
20 knots. waves subsiding to calm to 2 feet. 

$$

fzus63 kmqt 310201
glfls 
expires:202510310800;;588368

open lake forecast for lake superior
national weather service marquette mi
1001 pm edt thu oct 30 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...

29.9 inch troughing remains over lake superior tonight as a low 
deepens to 29.4 inches over the mid atlantic and a 29.8 inch low 
moves southeast from manitoba toward the upper great lakes. the mid 
atlantic low will continue deepening as it absorbs the other low, 
reaching 28.9 inches over maine by friday afternoon, with troughing 
deepening to 29.8 inches over lake superior. 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.



lsz263-310800-
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 pm edt thu oct 30 2025

.rest of tonight...north winds 5 to 15 knots. a chance of showers
after midnight. waves calm to 2 feet. 
.friday...northeast winds 10 to 20 knots. rain showers likely
through early afternoon, then a chance of rain showers by mid
afternoon. waves building to 3 to 5 feet occasionally to 7 feet. 
.friday night...north winds 10 to 20 knots. a slight chance of
rain showers. waves subsiding to 2 to 4 feet. 
.saturday...north winds 5 to 15 knots backing northwest by mid
afternoon. a slight chance of rain showers through early
afternoon. 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 45 knots. a chance of rain showers
by mid afternoon. waves building to 10 to 14 feet occasionally to
18 feet, then subsiding to 9 to 12 feet occasionally to 15 feet. 
.sunday night...southwest gales to 45 knots becoming west gales
to 40 knots 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 45 knots. waves building to 10 to 14 feet
occasionally to 18 feet, then subsiding to 5 to 8 feet
occasionally to 10 feet. 
.tuesday...west gales to 35 knots diminishing to 15 to 25 knots.
waves subsiding to 1 to 3 feet. 

$$

fzus63 kmqt 310201
glfls 
expires:202510310800;;588369

open lake forecast for lake superior
national weather service marquette mi
1001 pm edt thu oct 30 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...

29.9 inch troughing remains over lake superior tonight as a low 
deepens to 29.4 inches over the mid atlantic and a 29.8 inch low 
moves southeast from manitoba toward the upper great lakes. the mid 
atlantic low will continue deepening as it absorbs the other low, 
reaching 28.9 inches over maine by friday afternoon, with troughing 
deepening to 29.8 inches over lake superior. 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.



lsz264-310800-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
1001 pm edt thu oct 30 2025

.rest of tonight...north winds 5 to 15 knots becoming northeast
10 to 20 knots late. a slight chance of showers after midnight.
waves calm to 2 feet building to 1 to 3 feet. 
.friday...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. 
.friday night...north winds 10 to 20 knots diminishing to 5 to
15 knots late. a slight chance of rain showers. waves subsiding
to 1 to 3 feet. 
.saturday...north winds 5 to 15 knots. a slight chance of snow
showers through early afternoon. 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 45 knots. a chance of rain showers
by mid afternoon. waves building to 10 to 14 feet occasionally to
18 feet. 
.sunday night...southwest gales to 45 knots becoming west gales
to 40 knots after midnight. a chance of showers. waves subsiding
to 8 to 11 feet occasionally to 14 feet, then building to 9 to
12 feet occasionally to 15 feet. 
.monday...west gales to 45 knots. waves building to 10 to 14 feet
occasionally to 18 feet, then subsiding to 6 to 9 feet
occasionally to 11 feet. 
.tuesday...west gales to 35 knots diminishing to 15 to 25 knots.
waves subsiding to 2 to 4 feet. 

$$

fzus63 kmqt 310201
glfls 
expires:202510310800;;588370

open lake forecast for lake superior
national weather service marquette mi
1001 pm edt thu oct 30 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...

29.9 inch troughing remains over lake superior tonight as a low 
deepens to 29.4 inches over the mid atlantic and a 29.8 inch low 
moves southeast from manitoba toward the upper great lakes. the mid 
atlantic low will continue deepening as it absorbs the other low, 
reaching 28.9 inches over maine by friday afternoon, with troughing 
deepening to 29.8 inches over lake superior. 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.



lsz265-310800-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
1001 pm edt thu oct 30 2025

.rest of tonight...north winds 10 to 20 knots. a chance of
showers after midnight. waves calm to 2 feet building to 1 to
3 feet. 
.friday...northeast winds 15 to 25 knots backing north late. a
chance of showers through early afternoon, then showers likely by
mid afternoon. waves building to 3 to 5 feet occasionally to
7 feet. 
.friday night...north winds 15 to 25 knots diminishing to 10 to
20 knots 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 gales to
35 knots by mid afternoon. waves building to 2 to 4 feet. 
.sunday night...southwest gales to 40 knots veering west after
midnight. a chance of showers. waves building to 4 to 7 feet
occasionally to 9 feet. 
.monday...west gales to 45 knots. waves building to 6 to 9 feet
occasionally to 11 feet, then subsiding to 3 to 6 feet
occasionally to 8 feet. 
.tuesday...west gales to 35 knots diminishing to 15 to 25 knots.
waves subsiding to calm to 2 feet. 

$$

fzus63 kmqt 310201
glfls 
expires:202510310800;;588371

open lake forecast for lake superior
national weather service marquette mi
1001 pm edt thu oct 30 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...

29.9 inch troughing remains over lake superior tonight as a low 
deepens to 29.4 inches over the mid atlantic and a 29.8 inch low 
moves southeast from manitoba toward the upper great lakes. the mid 
atlantic low will continue deepening as it absorbs the other low, 
reaching 28.9 inches over maine by friday afternoon, with troughing 
deepening to 29.8 inches over lake superior. 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.



lsz266-310800-
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 pm edt thu oct 30 2025

.rest of tonight...north winds 10 to 20 knots becoming northeast
15 to 25 knots late. a slight chance of showers after midnight.
waves calm to 2 feet building to 2 to 4 feet. 
.friday...northeast winds 15 to 25 knots backing north in the
afternoon, then increasing to 20 to 30 knots late. a chance of
showers. waves building to 3 to 6 feet occasionally to 8 feet. 
.friday night...north winds 20 to 30 knots diminishing to 10 to
20 knots. rain showers likely through midnight. a chance of rain
showers after midnight. waves subsiding to 2 to 4 feet. 
.saturday...north winds 10 to 20 knots. a chance of rain showers
through early afternoon, then rain showers likely by mid
afternoon. 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 20 to 30 knots increasing to gales to
35 knots by mid afternoon. a chance of rain showers. waves
building to 7 to 10 feet occasionally to 13 feet. 
.sunday night...southwest gales to 40 knots becoming west gales
to 35 knots after midnight. showers likely. waves building to
9 to 12 feet occasionally to 15 feet. 
.monday...west gales to 45 knots. a chance of showers. waves
building to 12 to 17 feet occasionally to 21 feet, then subsiding
to 8 to 11 feet occasionally to 14 feet. 
.tuesday...west gales to 35 knots diminishing to 15 to 25 knots.
waves subsiding to 2 to 4 feet. 

$$

fzus63 kmqt 310201
glfls 
expires:202510310800;;588372

open lake forecast for lake superior
national weather service marquette mi
1001 pm edt thu oct 30 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...

29.9 inch troughing remains over lake superior tonight as a low 
deepens to 29.4 inches over the mid atlantic and a 29.8 inch low 
moves southeast from manitoba toward the upper great lakes. the mid 
atlantic low will continue deepening as it absorbs the other low, 
reaching 28.9 inches over maine by friday afternoon, with troughing 
deepening to 29.8 inches over lake superior. 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.



lsz267-310800-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
1001 pm edt thu oct 30 2025

.rest of tonight...north winds 10 to 20 knots veering northeast
after midnight, then becoming north 15 to 25 knots late. waves
calm to 2 feet building to 2 to 4 feet. 
.friday...north winds 20 to 30 knots. a chance of rain showers by
mid afternoon. waves building to 3 to 5 feet occasionally to
7 feet. 
.friday night...north winds 15 to 25 knots diminishing to 10 to
20 knots late. a chance of rain showers through midnight. waves
subsiding to 1 to 3 feet. 
.saturday...north winds 10 to 20 knots. a chance of rain showers.
waves subsiding to calm to 2 feet. 
.saturday night...northwest winds 5 to 15 knots backing southwest
after midnight. rain showers likely through midnight, then a
chance of rain showers after midnight. 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 likely.
waves building to 7 to 10 feet occasionally to 13 feet. 
.monday...west gales to 45 knots becoming northwest gales to
40 knots. a chance of showers. waves building to 12 to 17 feet
occasionally to 21 feet, then subsiding to 9 to 12 feet
occasionally to 15 feet. 
.tuesday...west winds 20 to 30 knots diminishing to 15 to
25 knots. a chance of showers. waves subsiding to 3 to 5 feet
occasionally to 7 feet. 

$$