fzus61 kbuf 030202
glflo 
expires:202510030900;;013579

open lake forecast for lake ontario
national weather service buffalo ny
1002 pm edt thu oct 2 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 large 30.3 inch high will settle south off the 
southern new england coast friday, then remain anchored near the mid 
atlantic coast saturday through monday. a cold front will then move 
east across the lower great lakes late tuesday through early 
wednesday. another strong 30.5 inch high is then forecast to build 
from the upper great lakes wednesday to southern quebec by thursday.


loz063>065-030900-
lake ontario open waters from hamlin beach to the saint lawrence
river-
1002 pm edt thu oct 2 2025

.overnight...southeast winds 10 to 15 knots becoming south
15 to 20 knots. waves 1 to 3 feet building to 2 to 4 feet. 
.friday...south winds 15 to 20 knots becoming southwest 5 to
15 knots. waves 2 to 4 feet subsiding to 1 to 3 feet. 
.friday night...south winds 5 to 10 knots becoming southwest.
waves 1 foot or less. 
.saturday...southwest winds 10 knots or less becoming southeast.
waves 1 foot or less. 
.saturday night...southeast winds 10 knots or less becoming
south. waves 1 foot or less. 
.sunday...south winds 5 to 15 knots. waves 1 foot or less
building to 1 to 3 feet. 
.monday...south winds 5 to 15 knots. a chance of showers monday
night. waves 1 to 3 feet. 
.tuesday...south winds 5 to 10 knots becoming southwest and
increasing to 15 to 20 knots. a chance of showers during the day,
then showers likely tuesday night. waves 1 to 3 feet building to
3 to 5 feet. 

$$

fzus61 kbuf 030202
glflo 
expires:202510030900;;013578

open lake forecast for lake ontario
national weather service buffalo ny
1002 pm edt thu oct 2 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 large 30.3 inch high will settle south off the 
southern new england coast friday, then remain anchored near the mid 
atlantic coast saturday through monday. a cold front will then move 
east across the lower great lakes late tuesday through early 
wednesday. another strong 30.5 inch high is then forecast to build 
from the upper great lakes wednesday to southern quebec by thursday.


loz062-030900-
lake ontario open waters from the niagara river to hamlin beach-
1002 pm edt thu oct 2 2025

.overnight...east winds 5 to 15 knots becoming southwest.
waves 1 to 3 feet. 
.friday...southwest winds 5 to 15 knots diminishing to less than
10 knots. waves 2 feet or less. 
.friday night...south winds 5 to 10 knots becoming southwest.
waves 1 foot or less. 
.saturday...southwest winds 10 knots or less becoming southeast.
waves 1 foot or less. 
.saturday night...southeast winds 5 to 10 knots becoming
southwest. waves 1 foot or less. 
.sunday...southwest winds 10 knots or less becoming south. waves
2 feet or less. 
.monday...southwest winds 10 to 15 knots. a chance of showers
monday night. waves 1 to 2 feet. 
.tuesday...southwest winds 10 to 15 knots becoming west 15 to
20 knots. showers likely. waves 1 to 3 feet building to 3 to
5 feet. 

$$

fzus61 kcle 030135
glfle 
expires:202510030815;;012661

open lake forecast for lake erie
national weather service cleveland oh
935 pm edt thu oct 2 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...
high pressure 30.30 inches currently over new england will remain
in control through monday while drifting into the mid atlantic and
slowly weakening. early next week, low pressure 29.60 inches 
deepens over the northern great plains and will move into the 
region dragging a cold front through late tuesday.


lez164>167-030815-
the islands to vermilion oh beyond 5 nm off shoreline to us-
canadian border-
vermilion to avon point oh beyond 5 nm off shoreline to us-
canadian border-
avon point to willowick oh beyond 5 nm off shoreline to us-
canadian border-willowick to geneva-on-the-
lake oh beyond 5nm off shoreline to us-canadian border-
935 pm edt thu oct 2 2025

.overnight...southeast winds 10 to 15 knots becoming south.
waves 1 to 2 feet. 
.friday...south winds 5 to 15 knots becoming west less than
10 knots. waves 1 to 3 feet. 
.friday night...southeast winds 10 knots or less becoming south.
waves 1 foot or less. 
.saturday...southwest winds 10 knots or less becoming southeast.
waves 1 foot or less. 
.saturday night...southeast winds 5 to 10 knots becoming south.
waves 2 feet or less. 
.sunday...south winds 5 to 15 knots. waves 1 to 3 feet. 
.monday...southwest winds 5 to 15 knots becoming south. a chance
of showers monday night. waves 1 to 3 feet. 
.tuesday...south winds 10 to 15 knots becoming west and
increasing to 15 to 25 knots. showers. waves 1 to 3 feet building
to 3 to 5 feet. 

$$

fzus61 kcle 030135
glfle 
expires:202510030815;;012662

open lake forecast for lake erie
national weather service cleveland oh
935 pm edt thu oct 2 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...
high pressure 30.30 inches currently over new england will remain
in control through monday while drifting into the mid atlantic and
slowly weakening. early next week, low pressure 29.60 inches 
deepens over the northern great plains and will move into the 
region dragging a cold front through late tuesday.


lez061-168-169-030815-
ripley to buffalo ny extending from 5nm off shoreline to us-
canadian border-geneva-on-the-
lake to conneaut oh beyond 5 nm off shoreline to us-
canadian border-
conneaut oh to ripley ny beyond 5 nm off shoreline to us-
canadian border-
935 pm edt thu oct 2 2025

.overnight...southeast winds 5 to 15 knots becoming south.
waves 1 foot or less building to 1 to 3 feet. 
.friday...south winds 5 to 15 knots becoming west. waves 1 to
3 feet subsiding to 1 foot or less. 
.friday night...southwest winds 10 knots or less becoming south.
waves 1 foot or less. 
.saturday...south winds 10 knots or less becoming southwest.
waves 1 foot or less. 
.saturday night...southeast winds 10 knots or less becoming
south. waves 1 foot or less. 
.sunday...south winds 10 knots or less increasing to 10 to
15 knots. waves 1 foot or less building to 1 to 3 feet. 
.monday...south winds 5 to 15 knots. a chance of showers monday
night. waves 1 to 3 feet. 
.tuesday...south winds 10 to 15 knots becoming west 15 to
20 knots. showers. waves 1 to 3 feet building to 3 to 5 feet. 

$$

fzus61 kcle 030135
glfle 
expires:202510030815;;012660

open lake forecast for lake erie
national weather service cleveland oh
935 pm edt thu oct 2 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...
high pressure 30.30 inches currently over new england will remain
in control through monday while drifting into the mid atlantic and
slowly weakening. early next week, low pressure 29.60 inches 
deepens over the northern great plains and will move into the 
region dragging a cold front through late tuesday.


lez162-163-030815-
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-
935 pm edt thu oct 2 2025

.overnight...southeast winds 5 to 10 knots becoming
southwest. waves 2 feet or less. 
.friday...southwest winds 10 knots or less becoming southeast.
waves 1 foot or less. 
.friday night...southeast winds 5 to 10 knots becoming southwest.
waves 1 foot or less. 
.saturday...southwest winds 10 knots or less becoming southeast.
waves 1 foot or less. 
.saturday night...southeast winds 5 to 10 knots becoming south.
waves 1 foot or less. 
.sunday...south winds 5 to 15 knots. waves 2 feet or less. 
.monday...southwest winds 5 to 10 knots. a chance of showers
monday night. waves 2 feet or less. 
.tuesday...southwest winds 10 to 15 knots becoming west 15 to
20 knots. showers likely. waves 1 to 3 feet. 

$$

fzus63 kdtx 030152
glflh 
expires:202510031000;;013135

open lake forecast for lake huron
national weather service detroit/pontiac mi
952 pm edt thu oct 2 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...a warm and dry airmass will prevail, accompanied by
prolonged south-southwest winds, mostly under 20 knots, through
the weekend.


lhz462>464-031000-
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-
952 pm edt thu oct 2 2025

.rest of tonight...southeast winds 10 to 15 knots decreasing to 5
to 10 knots early in the morning. waves 1 to 3 feet. 
.friday...south winds 5 to 10 knots. waves 2 feet or less. 
.friday night...south winds 5 to 10 knots. waves 2 feet or less. 
.saturday...south winds 5 to 10 knots. waves 2 feet or less. 
.saturday night...south winds 10 to 15 knots. waves 1 to 3 feet. 
.sunday...south winds 10 to 15 knots increasing to 15 to 20 knots
late in the afternoon. waves 1 to 3 feet building to 3 to 5 feet.
.monday...south winds 10 to 15 knots. a chance of showers until
early morning. waves 2 to 4 feet subsiding to 1 to 3 feet until
early morning. 
.tuesday...north winds 5 to 10 knots becoming southwest 10 to
15 knots until early evening...then becoming west 15 to 20 knots
in the late evening and early morning. showers likely. a chance
of showers in the late evening and early morning. waves 1 to
3 feet building to 5 to 7 feet in the late evening and early
morning. waves occasionally around 10 feet. 


$$

fzus63 kdtx 030152
glfsc 
expires:202510031000;;013137

lake st clair forecast
national weather service detroit/pontiac mi
952 pm edt thu oct 2 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...a warm and dry airmass will prevail, accompanied by
prolonged south-southwest winds, mostly under 20 knots, through
the weekend.


lcz460-031000-
lake st clair-
952 pm edt thu oct 2 2025

.rest of tonight...southeast winds 5 to 10 knots this evening
becoming light and variable. mostly clear. waves 2 feet or less.
.friday...light and variable winds becoming southeast 5 to 10 knots
late in the afternoon. sunny. waves 2 feet or less.
.friday night...south winds 5 to 10 knots. clear. waves 2 feet or
less.
.saturday...light and variable winds becoming south 5 to 10 knots in
the late morning and afternoon. sunny. waves 2 feet or less.
.saturday night...south winds 10 to 15 knots. clear. waves 2 feet or
less.
.sunday...south winds 5 to 10 knots increasing to 10 to 15 knots in
the afternoon and evening. clear. waves 2 feet or less.
.monday...south winds 10 to 15 knots. mostly clear. waves 2 feet or
less.
.tuesday...southwest winds 15 to 20 knots. partly cloudy. light
showers likely. waves 2 feet or less.

$$

fzus63 kdtx 030152
glflh 
expires:202510031000;;013133

open lake forecast for lake huron
national weather service detroit/pontiac mi
952 pm edt thu oct 2 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...a warm and dry airmass will prevail, accompanied by
prolonged south-southwest winds, mostly under 20 knots, through
the weekend.


lhz361-031000-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
952 pm edt thu oct 2 2025

.rest of tonight...southeast winds 10 to 15 knots decreasing to 5
to 10 knots after midnight. waves 1 to 3 feet. 
.friday...southwest winds 5 to 10 knots in the morning becoming
light and variable. waves 2 feet or less. 
.friday night...light and variable winds. waves 2 feet or less. 
.saturday...southeast winds 5 to 10 knots. waves 2 feet or less. 
.saturday night...southeast winds 5 to 10 knots becoming south
10 to 15 knots in the late evening and overnight. waves 2 to
4 feet. 
.sunday...south winds 10 to 15 knots increasing to 15 to 20 knots
late in the evening. a chance of showers late in the evening.
waves 1 to 3 feet building to 3 to 5 feet. 
.monday...southwest winds 10 to 15 knots veering to the west in
the late morning and early afternoon...then decreasing to 5 to
10 knots early in the evening veering to the west 5 to 10 knots
in the late evening and early morning. a chance of showers. waves
3 to 5 feet subsiding to 1 to 3 feet until early morning. 
.tuesday...northwest winds 5 to 10 knots becoming west 10 to
15 knots early in the evening...then becoming northwest 15 to
20 knots in the late evening and early morning. a chance of
showers. waves 2 feet or less building to 3 to 5 feet until early
morning. 


$$

fzus63 kdtx 030152
glflh 
expires:202510031000;;013134

open lake forecast for lake huron
national weather service detroit/pontiac mi
952 pm edt thu oct 2 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...a warm and dry airmass will prevail, accompanied by
prolonged south-southwest winds, mostly under 20 knots, through
the weekend.


lhz362-363-031000-
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-
952 pm edt thu oct 2 2025

.rest of tonight...southeast winds 10 to 15 knots. waves 1 to 3 
feet.
.friday...southwest winds 10 to 15 knots decreasing to 5 to
10 knots in the late morning and early afternoon...then backing
to the southeast late in the afternoon. waves 1 to 3 feet. 
.friday night...southeast winds 5 to 10 knots veering to the
south after midnight. waves 2 feet or less. 
.saturday...south winds 5 to 10 knots increasing to 10 to
15 knots early in the afternoon. waves 1 to 3 feet. 
.saturday night...south winds 10 to 15 knots. waves 2 to 4 feet. 
.sunday...south winds 10 to 15 knots increasing to 15 to 20 knots
late in the afternoon. waves 3 to 5 feet building to 5 to 7 feet
late in the afternoon. waves occasionally around 10 feet. 
.monday...southwest winds 15 to 20 knots decreasing to 10 to
15 knots in the late morning and early afternoon...then veering
to the west early in the evening becoming west 10 to 15 knots in
the late evening and early morning. a chance of showers. waves
3 to 5 feet subsiding to 1 to 3 feet in the late evening and
early morning. 
.tuesday...north winds 5 to 10 knots increasing to 10 to 15 knots
in the late morning and early afternoon...then backing to the
west early in the evening becoming northwest 15 to 20 knots in
the late evening and early morning. showers likely until
afternoon...then a chance of showers until early morning. waves
1 to 3 feet building to 5 to 7 feet. waves occasionally around
10 feet. 


$$

fzus63 kmkx 030132
glflm 
expires:202510030915;;012639

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
832 pm cdt thu oct 2 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...

broad high pressure of 30.6 inches will linger over the east coast 
of the united states into this weekend, generally moving southward 
with time. winds will continue from a southerly to southwesterly 
direction, with light to moderate speeds through friday. winds 
are expected to pick up saturday afternoon as a stronger pressure 
gradient moves over the lake between the high pressure and 
approaching low pressure of 29.5 inches over the northern plains. 

gusty south to southwest winds will then continue through sunday, 
with some potential for gales sunday afternoon over the northern 
half of lake michigan. winds should then ease early monday morning
following the passage of a frontal boundary.


lmz080-669-671-673-675-777-779-870-872-874-876-878-030915-
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-
832 pm cdt thu oct 2 2025

sheboygan wi to pentwater mi south...

.rest of tonight...southeast winds 10 to 15 kt becoming south.
waves 1 to 3 ft. 
.friday...southwest winds 10 to 15 kt becoming south 10 to 20 kt.
waves 1 to 3 ft. 
.friday night...south winds 10 to 20 kt diminishing to 10 to
15 kt. waves 2 to 4 ft. 
.saturday...south winds 10 to 20 kt increasing to 15 to 25 kt.
waves 2 to 4 ft building to 4 to 6 ft occasionally to 8 ft. 
.saturday night...south winds 15 to 25 kt diminishing to 10 to
20 kt. waves 4 to 7 ft occasionally to 9 ft. 
.sunday...south winds to 30 kt increasing to gales to 35 kt.
waves 4 to 7 ft occasionally to 9 ft building to 8 to 12 ft
occasionally to 16 ft. 
.sunday night...south winds to 30 kt becoming southwest. waves
8 to 12 ft occasionally to 16 ft subsiding to 7 to 10 ft
occasionally to 13 ft. 
.monday...west winds 10 to 20 kt veering to north. chance of
showers. waves 5 to 8 ft occasionally to 10 ft subsiding to 3 to
5 ft. 
.tuesday...west winds 10 to 20 kt becoming northwest. chance of
showers. waves 3 to 5 ft.  

$$

fzus63 kmkx 030132
glflm 
expires:202510030915;;012638

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
832 pm cdt thu oct 2 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...

broad high pressure of 30.6 inches will linger over the east coast 
of the united states into this weekend, generally moving southward 
with time. winds will continue from a southerly to southwesterly 
direction, with light to moderate speeds through friday. winds 
are expected to pick up saturday afternoon as a stronger pressure 
gradient moves over the lake between the high pressure and 
approaching low pressure of 29.5 inches over the northern plains. 

gusty south to southwest winds will then continue through sunday, 
with some potential for gales sunday afternoon over the northern 
half of lake michigan. winds should then ease early monday morning
following the passage of a frontal boundary.


lmz261-362-364-366-563-565-567-868-030915-
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-
832 pm cdt thu oct 2 2025

sheboygan wi to pentwater mi north...

.rest of tonight...south winds 10 to 20 kt. waves 1 to 3 ft.
.friday...southwest winds 10 to 20 kt becoming south. chance of
showers in the afternoon. waves 1 to 3 ft. 
.friday night...south winds 10 to 20 kt diminishing to 10 to
15 kt. waves 1 to 3 ft. 
.saturday...south winds 10 to 20 kt increasing to 15 to 25 kt.
waves 2 to 4 ft building to 4 to 6 ft occasionally to 8 ft. 
.saturday night...south winds to 30 kt. waves 4 to 7 ft
occasionally to 9 ft. 
.sunday...south winds to 30 kt increasing to gales to 40 kt in
the afternoon. waves 4 to 7 ft occasionally to 9 ft building to
8 to 12 ft occasionally to 16 ft. 
.sunday night...south gales to 40 kt becoming southwest. waves
8 to 12 ft occasionally to 16 ft subsiding to 8 to 11 ft
occasionally to 14 ft. 
.monday...northwest winds 10 to 20 kt becoming north. chance of
showers. waves 5 to 8 ft occasionally to 10 ft subsiding to 3 to
5 ft. 
.tuesday...northwest winds 10 to 20 kt increasing to 15 to 25 kt.
chance of showers. waves 1 to 3 ft.  

$$

fzus63 kmqt 030201
glfls 
expires:202510030800;;013400

open lake forecast for lake superior
national weather service marquette mi
1001 pm edt thu oct 2 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...

a 30.4 inch high over the mid-atlantic coast and a 30.1 inch high 
crossing northern ontario on friday maintain 30.0 to 30.1 inch 
ridging over lake superior through friday night. meanwhile, 
troughing over the plains deepens to 29.6 inches on friday, becoming 
centered over the dakotas friday night. this lifts towards lake 
winnipeg on saturday while a 29.4 inch low develops off of the 
colorado rockies. this second low then lifts northeast on sunday to 
northwestern ontario, quickly reaching far northern quebec by monday 
morning as it deepens to at least 29.2 inches. this results in at 
least 29.8 inch troughing over lake superior by saturday, which 
holds until monday morning. in it's wake, a 30.3 inch high pressure 
moving across the northern plains brings ridging of 30.2 inches back 
over lake superior by monday evening. a reinforcing 30.4 inch high 
pressure dropping down from the canadian prairies into the northern 
plains on tuesday brings 30.3 inch ridging to lake superior by 
tuesday evening.



lsz162-030800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1001 pm edt thu oct 2 2025 /901 pm cdt thu oct 2 2025/

.rest of tonight...southwest winds 5 to 15 knots. scattered
showers and isolated thunderstorms. waves calm to 2 feet. 
.friday...southwest winds 5 to 15 knots backing east in the
afternoon, then becoming northeast 10 to 20 knots late. waves
calm to 2 feet. 
.friday night...northeast winds 10 to 20 knots diminishing to
5 to 15 knots after midnight, then veering east late. waves calm
to 2 feet. 
.saturday...south winds 10 to 20 knots increasing to 15 to
25 knots by mid afternoon. waves building to 1 to 3 feet. 
.saturday night...south winds 20 to 30 knots. waves building to
3 to 6 feet occasionally to 8 feet. 
.sunday...south winds 20 to 30 knots increasing to gales to
35 knots by mid afternoon. waves building to 5 to 8 feet
occasionally to 10 feet. 
.sunday night...southwest gales to 35 knots becoming west 15 to
25 knots after midnight. waves subsiding to 2 to 4 feet. 
.monday...west winds 10 to 20 knots. waves subsiding to calm to
2 feet. 
.tuesday...west winds 15 to 25 knots becoming northwest 10 to
20 knots. waves building to 2 to 4 feet, then subsiding to calm
to 2 feet. 

$$

fzus63 kmqt 030201
glfls 
expires:202510030800;;013401

open lake forecast for lake superior
national weather service marquette mi
1001 pm edt thu oct 2 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...

a 30.4 inch high over the mid-atlantic coast and a 30.1 inch high 
crossing northern ontario on friday maintain 30.0 to 30.1 inch 
ridging over lake superior through friday night. meanwhile, 
troughing over the plains deepens to 29.6 inches on friday, becoming 
centered over the dakotas friday night. this lifts towards lake 
winnipeg on saturday while a 29.4 inch low develops off of the 
colorado rockies. this second low then lifts northeast on sunday to 
northwestern ontario, quickly reaching far northern quebec by monday 
morning as it deepens to at least 29.2 inches. this results in at 
least 29.8 inch troughing over lake superior by saturday, which 
holds until monday morning. in it's wake, a 30.3 inch high pressure 
moving across the northern plains brings ridging of 30.2 inches back 
over lake superior by monday evening. a reinforcing 30.4 inch high 
pressure dropping down from the canadian prairies into the northern 
plains on tuesday brings 30.3 inch ridging to lake superior by 
tuesday evening.



lsz263-030800-
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 2 2025

.rest of tonight...southwest winds 5 to 15 knots. scattered
showers and isolated thunderstorms. waves calm to 2 feet. 
.friday...west winds less than 10 knots veering northeast in the
afternoon, then becoming east 5 to 15 knots late. waves calm to
2 feet. 
.friday night...east winds 5 to 15 knots veering southeast after
midnight, then becoming south 10 to 20 knots late. waves calm to
2 feet. 
.saturday...south winds 15 to 25 knots. waves building to 2 to
4 feet. 
.saturday night...south winds 15 to 25 knots increasing to 20 to
30 knots after midnight. waves building to 3 to 6 feet
occasionally to 8 feet. 
.sunday...south gales to 40 knots. waves building to 5 to 8 feet
occasionally to 10 feet. 
.sunday night...southwest gales to 40 knots becoming west 20 to
30 knots after midnight. waves subsiding to 4 to 7 feet
occasionally to 9 feet. 
.monday...west winds 10 to 20 knots. waves subsiding to calm to
2 feet, then building to 1 to 3 feet. 
.tuesday...west winds 15 to 25 knots veering northwest. waves
building to 3 to 5 feet occasionally to 7 feet, then subsiding to
2 to 4 feet. 

$$

fzus63 kmqt 030201
glfls 
expires:202510030800;;013402

open lake forecast for lake superior
national weather service marquette mi
1001 pm edt thu oct 2 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...

a 30.4 inch high over the mid-atlantic coast and a 30.1 inch high 
crossing northern ontario on friday maintain 30.0 to 30.1 inch 
ridging over lake superior through friday night. meanwhile, 
troughing over the plains deepens to 29.6 inches on friday, becoming 
centered over the dakotas friday night. this lifts towards lake 
winnipeg on saturday while a 29.4 inch low develops off of the 
colorado rockies. this second low then lifts northeast on sunday to 
northwestern ontario, quickly reaching far northern quebec by monday 
morning as it deepens to at least 29.2 inches. this results in at 
least 29.8 inch troughing over lake superior by saturday, which 
holds until monday morning. in it's wake, a 30.3 inch high pressure 
moving across the northern plains brings ridging of 30.2 inches back 
over lake superior by monday evening. a reinforcing 30.4 inch high 
pressure dropping down from the canadian prairies into the northern 
plains on tuesday brings 30.3 inch ridging to lake superior by 
tuesday evening.



lsz264-030800-
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 2 2025

.rest of tonight...southwest winds 5 to 15 knots. scattered
showers and isolated thunderstorms. waves 1 to 3 feet subsiding
to calm to 2 feet. 
.friday...west winds 5 to 15 knots veering north in the
afternoon, then veering east late. waves calm to 2 feet. 
.friday night...east winds 5 to 15 knots veering southeast after
midnight, then increasing to 10 to 20 knots late. waves building
to 1 to 3 feet. 
.saturday...south winds 15 to 25 knots. waves building to 3 to
5 feet occasionally to 7 feet. 
.saturday night...south winds 15 to 25 knots increasing to 20 to
30 knots after midnight. waves building to 3 to 6 feet
occasionally to 8 feet. 
.sunday...south winds 20 to 30 knots increasing to gales to
35 knots by mid afternoon. waves building to 5 to 8 feet
occasionally to 10 feet. 
.sunday night...southwest gales to 35 knots becoming west 20 to
30 knots after midnight. waves subsiding to 4 to 7 feet
occasionally to 9 feet, then building to 6 to 9 feet occasionally
to 11 feet. 
.monday...west winds 10 to 20 knots backing southwest. waves
subsiding to calm to 2 feet, then building to 1 to 3 feet. 
.tuesday...west winds 15 to 25 knots veering northwest. waves
building to 3 to 5 feet occasionally to 7 feet, then subsiding to
2 to 4 feet. 

$$

fzus63 kmqt 030201
glfls 
expires:202510030800;;013403

open lake forecast for lake superior
national weather service marquette mi
1001 pm edt thu oct 2 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...

a 30.4 inch high over the mid-atlantic coast and a 30.1 inch high 
crossing northern ontario on friday maintain 30.0 to 30.1 inch 
ridging over lake superior through friday night. meanwhile, 
troughing over the plains deepens to 29.6 inches on friday, becoming 
centered over the dakotas friday night. this lifts towards lake 
winnipeg on saturday while a 29.4 inch low develops off of the 
colorado rockies. this second low then lifts northeast on sunday to 
northwestern ontario, quickly reaching far northern quebec by monday 
morning as it deepens to at least 29.2 inches. this results in at 
least 29.8 inch troughing over lake superior by saturday, which 
holds until monday morning. in it's wake, a 30.3 inch high pressure 
moving across the northern plains brings ridging of 30.2 inches back 
over lake superior by monday evening. a reinforcing 30.4 inch high 
pressure dropping down from the canadian prairies into the northern 
plains on tuesday brings 30.3 inch ridging to lake superior by 
tuesday evening.



lsz265-030800-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
1001 pm edt thu oct 2 2025

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

$$

fzus63 kmqt 030201
glfls 
expires:202510030800;;013404

open lake forecast for lake superior
national weather service marquette mi
1001 pm edt thu oct 2 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...

a 30.4 inch high over the mid-atlantic coast and a 30.1 inch high 
crossing northern ontario on friday maintain 30.0 to 30.1 inch 
ridging over lake superior through friday night. meanwhile, 
troughing over the plains deepens to 29.6 inches on friday, becoming 
centered over the dakotas friday night. this lifts towards lake 
winnipeg on saturday while a 29.4 inch low develops off of the 
colorado rockies. this second low then lifts northeast on sunday to 
northwestern ontario, quickly reaching far northern quebec by monday 
morning as it deepens to at least 29.2 inches. this results in at 
least 29.8 inch troughing over lake superior by saturday, which 
holds until monday morning. in it's wake, a 30.3 inch high pressure 
moving across the northern plains brings ridging of 30.2 inches back 
over lake superior by monday evening. a reinforcing 30.4 inch high 
pressure dropping down from the canadian prairies into the northern 
plains on tuesday brings 30.3 inch ridging to lake superior by 
tuesday evening.



lsz266-030800-
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 2 2025

.rest of tonight...south winds 15 to 25 knots becoming southwest
5 to 15 knots late. scattered showers. isolated thunderstorms
after midnight. waves 3 to 5 feet occasionally to 7 feet
subsiding to 1 to 3 feet. 
.friday...southwest winds 5 to 15 knots veering west in the
afternoon, then backing east late. a slight chance of showers and
thunderstorms. waves subsiding to calm to 2 feet. 
.friday night...east winds 5 to 15 knots veering southeast after
midnight, then becoming south 10 to 20 knots late. waves building
to 1 to 3 feet. 
.saturday...south winds 15 to 25 knots increasing to 20 to
30 knots by mid afternoon. waves building to 3 to 5 feet
occasionally to 7 feet. 
.saturday night...south winds 20 to 30 knots. waves building to
3 to 6 feet occasionally to 8 feet. 
.sunday...south winds 20 to 30 knots increasing to gales to
35 knots by mid afternoon. waves building to 6 to 9 feet
occasionally to 11 feet. 
.sunday night...south gales to 40 knots becoming west 20 to
30 knots after midnight. a chance of showers. waves building to
7 to 10 feet occasionally to 13 feet, then subsiding to 5 to
8 feet occasionally to 10 feet. 
.monday...northwest winds 15 to 25 knots becoming west 5 to
15 knots. a chance of showers. waves subsiding to 1 to 3 feet. 
.tuesday...west winds 15 to 25 knots veering northwest. a chance
of showers. waves building to 3 to 6 feet occasionally to 8 feet.

$$

fzus63 kmqt 030201
glfls 
expires:202510030800;;013405

open lake forecast for lake superior
national weather service marquette mi
1001 pm edt thu oct 2 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...

a 30.4 inch high over the mid-atlantic coast and a 30.1 inch high 
crossing northern ontario on friday maintain 30.0 to 30.1 inch 
ridging over lake superior through friday night. meanwhile, 
troughing over the plains deepens to 29.6 inches on friday, becoming 
centered over the dakotas friday night. this lifts towards lake 
winnipeg on saturday while a 29.4 inch low develops off of the 
colorado rockies. this second low then lifts northeast on sunday to 
northwestern ontario, quickly reaching far northern quebec by monday 
morning as it deepens to at least 29.2 inches. this results in at 
least 29.8 inch troughing over lake superior by saturday, which 
holds until monday morning. in it's wake, a 30.3 inch high pressure 
moving across the northern plains brings ridging of 30.2 inches back 
over lake superior by monday evening. a reinforcing 30.4 inch high 
pressure dropping down from the canadian prairies into the northern 
plains on tuesday brings 30.3 inch ridging to lake superior by 
tuesday evening.



lsz267-030800-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
1001 pm edt thu oct 2 2025

.rest of tonight...south winds 15 to 25 knots becoming southwest
10 to 20 knots late. scattered showers. waves 2 to 4 feet
subsiding to 1 to 3 feet. 
.friday...southwest winds 10 to 20 knots diminishing to 5 to
15 knots in the afternoon, then backing east late. a slight
chance of showers and thunderstorms. waves subsiding to calm to
2 feet. 
.friday night...east winds 5 to 15 knots becoming southeast 10 to
20 knots after midnight. waves calm to 2 feet. 
.saturday...south winds 15 to 25 knots. waves building to 2 to
4 feet. 
.saturday night...south winds 20 to 30 knots diminishing to 15 to
25 knots after midnight. waves building to 3 to 5 feet
occasionally to 7 feet. 
.sunday...south winds 15 to 25 knots increasing to gales to
35 knots by mid afternoon. waves building to 4 to 7 feet
occasionally to 9 feet. 
.sunday night...south gales to 35 knots becoming west 20 to
30 knots after midnight. showers likely through midnight, then a
chance of showers after midnight. waves building to 4 to 8 feet
occasionally to 10 feet. 
.monday...northwest winds 10 to 20 knots backing west. a chance
of showers. waves subsiding to calm to 2 feet. 
.tuesday...west winds 10 to 20 knots becoming northwest 15 to
25 knots. a chance of showers. waves building to 3 to 6 feet
occasionally to 8 feet. 

$$