fzus61 kbuf 072003
glflo 
expires:202610080300;;696875

open lake forecast for lake ontario
national weather service buffalo ny
402 pm edt wed oct 7 2026

for waters beyond five nautical miles of shore on lake ontario

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

.synopsis...a cold front will sweep eastward across the lake this 
evening through early thursday morning. behind the front, a weak 
trough averaging 29.7 inches should linger over the lake through 
thursday. during thursday night through friday, a ridge averaging 
30.1 inches should affect the lake as the parent high pressure 
center moves from the western great lakes toward the central 
appalachians. a warm front should sweep northward across the lake 
friday night as the ridge begins to exit eastward. on saturday 
through monday, a weak trough averaging 29.9 inches should 
overspread the eastern great lakes generally from the south as 
isaias and its eventual remnant low approaches from the north-
central gulf coast and eventually the mid ohio valley and vicinity.


loz063>065-080300-
lake ontario open waters from hamlin beach to the saint lawrence
river-
402 pm edt wed oct 7 2026

.tonight...southwest winds 15 to 20 knots becoming west. a chance
of showers early, then showers. a chance of showers late. waves
2 to 4 feet building to 3 to 5 feet, then subsiding to 2 to
4 feet. 
.thursday...west winds 15 to 20 knots. a chance of waterspouts. a
chance of showers. waves 3 to 6 feet. 
.thursday night...west winds 15 to 20 knots. a chance of
waterspouts. a chance of showers. waves 3 to 6 feet. 
.friday...west winds 15 to 20 knots. a chance of waterspouts. a
chance of showers. waves 3 to 5 feet subsiding to 2 to 4 feet. 
.friday night...west winds 5 to 15 knots becoming south. a chance
of waterspouts in the evening. waves 2 to 4 feet subsiding to
1 to 3 feet. 
.saturday...south winds 10 to 15 knots increasing to 15 to
20 knots. waves 1 to 3 feet. 
.sunday...south winds 15 to 20 knots diminishing to 10 to
15 knots. showers. waves 1 to 3 feet. 
.monday...southwest winds 5 to 15 knots becoming northwest 15 to
20 knots. a chance of showers monday night. waves 1 to 3 feet
building to 3 to 5 feet. 

$$

fzus61 kbuf 072003
glflo 
expires:202610080300;;696874

open lake forecast for lake ontario
national weather service buffalo ny
402 pm edt wed oct 7 2026

for waters beyond five nautical miles of shore on lake ontario

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

.synopsis...a cold front will sweep eastward across the lake this 
evening through early thursday morning. behind the front, a weak 
trough averaging 29.7 inches should linger over the lake through 
thursday. during thursday night through friday, a ridge averaging 
30.1 inches should affect the lake as the parent high pressure 
center moves from the western great lakes toward the central 
appalachians. a warm front should sweep northward across the lake 
friday night as the ridge begins to exit eastward. on saturday 
through monday, a weak trough averaging 29.9 inches should 
overspread the eastern great lakes generally from the south as 
isaias and its eventual remnant low approaches from the north-
central gulf coast and eventually the mid ohio valley and vicinity.


loz062-080300-
lake ontario open waters from the niagara river to hamlin beach-
402 pm edt wed oct 7 2026

.tonight...southwest winds 15 to 20 knots becoming west 10 to
15 knots. a chance of showers through the early overnight. waves
3 to 5 feet subsiding to 2 to 4 feet. 
.thursday...west winds 15 to 20 knots. a chance of waterspouts.
waves 2 to 4 feet building to 3 to 5 feet. 
.thursday night...west winds 15 to 20 knots. a chance of
waterspouts. waves 2 to 4 feet. 
.friday...west winds 15 to 20 knots diminishing to 10 to
15 knots. a chance of waterspouts. waves 2 to 4 feet subsiding to
1 to 3 feet. 
.friday night...west winds 5 to 10 knots becoming south. waves
2 feet or less. 
.saturday...south winds 5 to 15 knots. a chance of showers
saturday night. waves 2 feet or less. 
.sunday...south winds 5 to 10 knots. showers. waves 2 feet or
less. 
.monday...southwest winds 5 to 10 knots increasing to 15 to
20 knots. a chance of showers monday night. waves 1 foot or less
building to 2 to 4 feet. 

$$

fzus61 kcle 071945
glfle 
expires:202610080215;;696406

open lake forecast for lake erie
national weather service cleveland oh
345 pm edt wed oct 7 2026

for waters beyond five nautical miles of shore on lake erie

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

.synopsis...
a cold front will move southeast across the lake tonight. high 
pressure 30.30 inches builds in from the west on thursday and 
persists through early saturday. a remnant tropical low pressure 
system 29.90 inches will track across the area from the south 
early sunday through monday.


lez162-163-080215-
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-
345 pm edt wed oct 7 2026

.tonight...west winds 15 to 20 knots. waves 1 to 3 feet. 
.thursday...northwest winds 15 to 20 knots becoming west 10 to
15 knots. waves 1 to 3 feet. 
.thursday night...west winds 5 to 15 knots. waves 2 feet or less.
.friday...west winds 10 knots or less becoming southeast. waves
1 foot or less. 
.friday night...southeast winds 5 to 15 knots becoming south.
waves 2 feet or less. 
.saturday...south winds 10 to 15 knots. showers likely saturday
night. waves 2 feet or less. 
.sunday...southeast winds 5 to 15 knots becoming southwest.
showers during the day. waves 2 feet or less. 
.monday...west winds 5 to 15 knots increasing to 15 to 20 knots.
a chance of showers monday night. waves around 1 foot building to
11 to 15 feet. waves occasionally around 19 feet. 

$$

fzus61 kcle 071945
glfle 
expires:202610080215;;696407

open lake forecast for lake erie
national weather service cleveland oh
345 pm edt wed oct 7 2026

for waters beyond five nautical miles of shore on lake erie

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

.synopsis...
a cold front will move southeast across the lake tonight. high 
pressure 30.30 inches builds in from the west on thursday and 
persists through early saturday. a remnant tropical low pressure 
system 29.90 inches will track across the area from the south 
early sunday through monday.


lez164>166-080215-
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-
345 pm edt wed oct 7 2026

.tonight...west winds 15 to 20 knots. waves 2 to 4 feet building
to 3 to 5 feet, then subsiding to 2 to 4 feet. 
.thursday...northwest winds 15 to 20 knots becoming west. waves
3 to 5 feet subsiding to 2 to 4 feet. 
.thursday night...west winds 10 to 15 knots becoming northwest.
waves 2 to 4 feet subsiding to 1 to 3 feet. 
.friday...northwest winds 5 to 10 knots becoming southwest. waves
2 feet or less. 
.friday night...southeast winds 5 to 15 knots becoming south.
waves 2 feet or less. 
.saturday...south winds 10 to 15 knots. showers saturday night.
waves 1 to 3 feet. 
.sunday...southeast winds 10 to 15 knots becoming southwest.
showers during the day. waves 1 to 3 feet. 
.monday...west winds 5 to 15 knots increasing to 15 to 25 knots.
a chance of showers monday night. waves 1 to 2 feet building to
22 to 27 feet. waves occasionally around 35 feet. 

$$

fzus61 kcle 071945
glfle 
expires:202610080215;;696408

open lake forecast for lake erie
national weather service cleveland oh
345 pm edt wed oct 7 2026

for waters beyond five nautical miles of shore on lake erie

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

.synopsis...
a cold front will move southeast across the lake tonight. high 
pressure 30.30 inches builds in from the west on thursday and 
persists through early saturday. a remnant tropical low pressure 
system 29.90 inches will track across the area from the south 
early sunday through monday.


lez061-167>169-080215-
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-
345 pm edt wed oct 7 2026

.tonight...southwest winds 15 to 20 knots becoming west. a slight
chance of showers this evening. waves 3 to 6 feet. 
.thursday...northwest winds 15 to 20 knots becoming west. waves
3 to 5 feet. 
.thursday night...west winds 15 to 20 knots becoming northwest
10 to 15 knots. waves 2 to 4 feet subsiding to 1 to 3 feet. 
.friday...northwest winds 5 to 10 knots becoming west. waves 1 to
3 feet. 
.friday night...southwest winds 5 to 15 knots becoming south.
waves 2 feet or less. 
.saturday...south winds 5 to 15 knots increasing to 15 to
20 knots. showers saturday night. waves 1 to 3 feet. 
.sunday...south winds 5 to 15 knots. showers during the day.
waves 1 to 3 feet. 
.monday...west winds 5 to 15 knots increasing to 15 to 25 knots.
a chance of showers monday night. waves 1 to 2 feet building to
25 to 30 feet. waves occasionally around 39 feet. 

$$

fzus63 kdtx 071956
glfsc 
expires:202610080400;;696618

lake st clair forecast
national weather service detroit/pontiac mi
356 pm edt wed oct 7 2026

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

.synopsis...a cold front slowly tracking through the central great
lakes triggers scattered showers over lake huron this evening, 
with a chance for a rumble of thunder. southwest winds weaken and 
shift west-northwesterly behind the front. persistent influence of
james bay low pressure maintains modest northwesterly winds 
through thursday. high pressure builds in from the west friday.


lcz460-080400-
lake st clair-
356 pm edt wed oct 7 2026

.tonight...west winds 15 to 20 knots diminishing to 10 to 15 knots
after midnight. clear. waves 1 to 3 feet.
.thursday...west winds 10 to 15 knots. sunny. waves 2 feet or less.
.thursday night...west winds 10 to 15 knots diminishing to 5 to 10
knots after midnight. clear. waves 2 feet or less.
.friday...west winds 5 to 10 knots backing to the south early in the
afternoon. mostly sunny. waves 2 feet or less.
.friday night...south winds 5 to 10 knots increasing to 10 to 15
knots in the late evening and overnight. mostly clear. waves 2 feet
or less.
.saturday...south winds 10 to 15 knots. mostly sunny becoming partly
cloudy. waves 2 feet or less.
.sunday...southeast winds 10 to 15 knots. mostly cloudy with a
chance of light rain. waves 2 feet or less.
.monday...west winds 10 to 15 knots. partly cloudy. a chance of
light rain. waves 2 feet or less.

$$

fzus63 kdtx 071955
glflh 
expires:202610080400;;696616

open lake forecast for lake huron
national weather service detroit/pontiac mi
355 pm edt wed oct 7 2026

for waters beyond five nautical miles off shore on lake huron

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

.synopsis...a cold front slowly tracking through the central great
lakes triggers scattered showers over lake huron this evening, 
with a chance for a rumble of thunder. southwest winds weaken and 
shift west-northwesterly behind the front. persistent influence of
james bay low pressure maintains modest northwesterly winds 
through thursday. high pressure builds in from the west friday.


lhz462>464-080400-
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-
355 pm edt wed oct 7 2026

.tonight...west winds 10 to 15 knots increasing to 15 to 20 knots
early in the morning. waves 1 to 3 feet building to 2 to 4 feet
after midnight. 
.thursday...west winds 15 to 20 knots. waves 3 to 5 feet. 
.thursday night...west winds 15 to 20 knots decreasing to 10 to
15 knots in the late evening and overnight. waves 3 to 5 feet. 
.friday...west winds 10 to 15 knots becoming southwest 5 to
10 knots in the late morning and afternoon. waves 1 to 3 feet. 
.friday night...south winds 5 to 10 knots increasing to 15 to
20 knots. waves 1 to 3 feet building to 2 to 4 feet after
midnight. 
.saturday...south winds 15 to 20 knots. waves 3 to 5 feet. 
.sunday...south winds 10 to 15 knots decreasing to 5 to 10 knots
by midnight. waves 2 to 4 feet subsiding to 1 to 3 feet. 
.monday...southwest winds 5 to 10 knots veering to the west in
the late morning and early afternoon...then becoming northwest
10 to 15 knots early in the evening increasing to 15 to 20 knots
by midnight. rain likely by midnight. waves 2 feet or less
building to 5 to 7 feet. waves occasionally around 10 feet. 


$$

fzus63 kdtx 071955
glflh 
expires:202610080400;;696615

open lake forecast for lake huron
national weather service detroit/pontiac mi
355 pm edt wed oct 7 2026

for waters beyond five nautical miles off shore on lake huron

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

.synopsis...a cold front slowly tracking through the central great
lakes triggers scattered showers over lake huron this evening, 
with a chance for a rumble of thunder. southwest winds weaken and 
shift west-northwesterly behind the front. persistent influence of
james bay low pressure maintains modest northwesterly winds 
through thursday. high pressure builds in from the west friday.


lhz363-080400-
lake huron from sturgeon point to alabaster mi beyond 5nm off
shore-
355 pm edt wed oct 7 2026

.tonight...west winds 10 to 15 knots increasing to 15 to 20 knots
early in the morning. a chance of rain in the evening. waves 1 to
3 feet building to 3 to 5 feet after midnight. 
.thursday...west winds 15 to 20 knots. waves 3 to 5 feet. 
.thursday night...west winds 15 to 20 knots becoming northwest
10 to 15 knots in the late evening and overnight. waves 3 to
5 feet. 
.friday...west winds 10 to 15 knots becoming southwest 5 to
10 knots in the late morning and afternoon. waves 1 to 3 feet. 
.friday night...south winds 10 to 15 knots increasing to 15 to
20 knots after midnight. waves 1 to 3 feet building to 2 to
4 feet after midnight. 
.saturday...south winds 15 to 20 knots. waves 4 to 6 feet. waves
occasionally around 8 feet. 
.sunday...south winds 10 to 15 knots decreasing to 5 to 10 knots
by midnight. waves 2 to 4 feet subsiding to 1 to 3 feet . 
.monday...southwest winds 5 to 10 knots becoming west 10 to
15 knots in the late morning and early afternoon...then becoming
southeast 15 to 20 knots early in the evening backing to the
north by midnight. rain likely by midnight. waves 1 to 3 feet
building to 4 to 6 feet . waves occasionally around 8 feet. 


$$

fzus63 kdtx 071955
glflh 
expires:202610080400;;696614

open lake forecast for lake huron
national weather service detroit/pontiac mi
355 pm edt wed oct 7 2026

for waters beyond five nautical miles off shore on lake huron

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

.synopsis...a cold front slowly tracking through the central great
lakes triggers scattered showers over lake huron this evening, 
with a chance for a rumble of thunder. southwest winds weaken and 
shift west-northwesterly behind the front. persistent influence of
james bay low pressure maintains modest northwesterly winds 
through thursday. high pressure builds in from the west friday.


lhz361-362-080400-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
lake huron from presque isle light to sturgeon point mi beyond
5nm off shore-
355 pm edt wed oct 7 2026

.tonight...west winds 10 to 15 knots increasing to 15 to 20 knots
after midnight. a chance of rain in the evening. waves 3 to
5 feet. 
.thursday...west winds 15 to 20 knots. gusts to 30 knots in the
afternoon. waves 4 to 6 feet. 
.thursday night...west winds 15 to 20 knots with gusts to around
30 knots becoming northwest 10 to 15 knots in the late evening
and overnight. waves 4 to 6 feet. waves occasionally around
8 feet. 
.friday...west winds 10 to 15 knots becoming southwest 5 to
10 knots in the late morning and afternoon. waves 1 to 3 feet. 
.friday night...southwest winds 5 to 10 knots becoming south
10 to 15 knots in the late evening and overnight. waves 1 to
3 feet building to 2 to 4 feet after midnight. 
.saturday...south winds 15 to 20 knots. gusts to 30 knots. waves
4 to 6 feet. 
.sunday...south winds 10 to 15 knots decreasing to 5 to 10 knots
by midnight. waves 3 to 5 feet. waves occasionally around 8 feet.
.monday...southwest winds 5 to 10 knots becoming west 10 to
15 knots in the late morning and early afternoon...then becoming
north 15 to 20 knots with gusts to around 30 knots . a chance of
rain . waves 1 to 3 feet building to 4 to 6 feet . waves
occasionally around 8 feet. 


$$

fzus63 kmkx 071948
glflm 
expires:202610080315;;696462

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
248 pm cdt wed oct 7 2026

for waters beyond five nautical miles of shore on lake michigan.

waves are provided as a range of significant wave heights, which
is the average of the highest 1/3 of the wave, along with the
average height of the highest 10% of the waves which will
occasionally be encountered.

.synopsis...

westerly winds over the upper great lakes will persist through 
thursday as high pressure around 30.1 inches pushes into the 
region. winds will become southerly on friday as the high departs 
and low pressure around 29.2 inches approaches from the 
northern plains. the tight pressure gradient over lake michigan 
will produce breezy southerly winds up to 30 kt from friday 
night through sunday morning. we cannot rule out a couple of 
gale force gusts in the north half saturday afternoon. 


lmz080-669-671-673-675-777-779-870-872-874-876-878-080315-
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-
248 pm cdt wed oct 7 2026

sheboygan wi to pentwater mi south...

.tonight...west winds 15 to 25 kt becoming northwest 10 to 20 kt.
waves 2 to 4 ft building to 3 to 5 ft. 
.thursday...northwest winds 15 to 25 kt diminishing to 10 to
20 kt. waves 4 to 6 ft occasionally to 8 ft subsiding to 3 to
5 ft. 
.thursday night...west winds 10 to 20 kt diminishing to 5 to
10 kt. waves 2 to 4 ft subsiding to 1 to 3 ft. 
.friday...south winds 10 to 20 kt increasing to 15 to 25 kt.
waves 1 to 3 ft building to 4 to 6 ft occasionally to 8 ft. 
.friday night...southeast winds 15 to 25 kt becoming south. waves
4 to 6 ft occasionally to 8 ft building to 4 to 7 ft occasionally
to 9 ft. 
.saturday...south winds to 30 kt. waves 6 to 9 ft occasionally to
12 ft. 
.saturday night...south winds to 30 kt diminishing to 15 to
25 kt. waves 5 to 8 ft occasionally to 10 ft subsiding to 4 to
7 ft occasionally to 9 ft. 
.sunday...south winds 10 to 20 kt. waves 4 to 6 ft occasionally
to 8 ft. 
.monday...west winds 10 to 20 kt becoming southwest. waves 2 to
4 ft.  

$$

fzus63 kmkx 071948
glflm 
expires:202610080315;;696461

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
248 pm cdt wed oct 7 2026

for waters beyond five nautical miles of shore on lake michigan.

waves are provided as a range of significant wave heights, which
is the average of the highest 1/3 of the wave, along with the
average height of the highest 10% of the waves which will
occasionally be encountered.

.synopsis...

westerly winds over the upper great lakes will persist through 
thursday as high pressure around 30.1 inches pushes into the 
region. winds will become southerly on friday as the high departs 
and low pressure around 29.2 inches approaches from the 
northern plains. the tight pressure gradient over lake michigan 
will produce breezy southerly winds up to 30 kt from friday 
night through sunday morning. we cannot rule out a couple of 
gale force gusts in the north half saturday afternoon. 


lmz261-362-364-366-563-565-567-868-080315-
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-
248 pm cdt wed oct 7 2026

sheboygan wi to pentwater mi north...

.tonight...west winds 15 to 25 kt becoming northwest 10 to 20 kt.
waves 2 to 4 ft. 
.thursday...northwest winds 15 to 25 kt. waves 3 to 5 ft. 
.thursday night...northwest winds 15 to 25 kt becoming west 5 to
10 kt. waves 2 to 4 ft subsiding to 1 to 2 ft. 
.friday...southwest winds 10 to 15 kt becoming south 15 to 25 kt
in the afternoon. waves 1 to 2 ft building to 4 to 6 ft
occasionally to 8 ft. 
.friday night...south winds 15 to 25 kt. waves 4 to 6 ft
occasionally to 8 ft building to 4 to 7 ft occasionally to 9 ft. 
.saturday...south winds to 30 kt increasing to gales to 35 kt in 
the afternoon. waves 6 to 9 ft occasionally to 12 ft. 
.saturday night...south gales to 35 kt. waves 6 to 9 ft
occasionally to 12 ft. 
.sunday...south winds to 30 kt. waves 4 to 7 ft occasionally to
9 ft. 
.monday...west winds 15 to 25 kt becoming northwest to 30 kt.
waves 2 to 4 ft.  

$$

fzus63 kmqt 072002
glfls 
expires:202610080800;;696787

open lake forecast for lake superior
national weather service marquette mi
401 pm edt wed oct 7 2026

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

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

.synopsis...

29.7 inch troughing continues through this evening as the associated 
29.4 inch low tracks eastward across far northern ontario over james 
bay. high pressure then builds in from the canadian prairies and 
northern plains late in the work week, shifting into the ohio river 
valley early friday. this will result in 29.9 inch ridging over lake 
superior on thursday strengthening to 30.1 inches on friday. a 29.4 
inch clipper low then develops off the northern rockies late friday, 
creating a tight pressure gradient over the great lakes as the high 
pressure center remains over the northeast us through saturday. 29.8 
inch troughing moves over the lake sunday morning as troughing 
extends eastward from the southwest us. ridging returns over the 
lake tuesday morning as high pressure builds once more over the 
northern plains. 




lsz162-080800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
401 pm edt wed oct 7 2026 /301 pm cdt wed oct 7 2026/

.late this afternoon...west winds 15 to 25 knots. a slight chance
of showers. waves 2 to 4 feet subsiding to 1 to 3 feet. 
.tonight...west winds 15 to 25 knots diminishing to 10 to
20 knots after midnight. waves building to 2 to 4 feet, then
subsiding to 1 to 3 feet. 
.thursday...west winds 10 to 20 knots increasing to 15 to
25 knots in the afternoon, then diminishing to 10 to 20 knots
late. waves subsiding to calm to 2 feet. 
.thursday night...west winds 5 to 15 knots. waves calm to 2 feet.
.friday...south winds 5 to 15 knots backing east by mid
afternoon. waves calm to 2 feet. 
.friday night...east winds 10 to 20 knots. waves building to 1 to
3 feet. 
.saturday...southeast winds 20 to 30 knots becoming south gales
to 35 knots by mid afternoon. waves building to 2 to 4 feet, then
subsiding to 1 to 3 feet. 
.saturday night...southwest gales to 35 knots. waves building to
3 to 6 feet occasionally to 8 feet. 
.sunday...southwest winds 15 to 25 knots veering north. a chance
of showers. waves subsiding to 1 to 3 feet, then building to 3 to
5 feet occasionally to 7 feet. 
.monday...northeast winds 15 to 25 knots backing north. a chance
of rain showers. waves subsiding to 2 to 4 feet. 

$$

fzus63 kmqt 072002
glfls 
expires:202610080800;;696788

open lake forecast for lake superior
national weather service marquette mi
401 pm edt wed oct 7 2026

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

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

.synopsis...

29.7 inch troughing continues through this evening as the associated 
29.4 inch low tracks eastward across far northern ontario over james 
bay. high pressure then builds in from the canadian prairies and 
northern plains late in the work week, shifting into the ohio river 
valley early friday. this will result in 29.9 inch ridging over lake 
superior on thursday strengthening to 30.1 inches on friday. a 29.4 
inch clipper low then develops off the northern rockies late friday, 
creating a tight pressure gradient over the great lakes as the high 
pressure center remains over the northeast us through saturday. 29.8 
inch troughing moves over the lake sunday morning as troughing 
extends eastward from the southwest us. ridging returns over the 
lake tuesday morning as high pressure builds once more over the 
northern plains. 




lsz263-080800-
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 pm edt wed oct 7 2026

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

$$

fzus63 kmqt 072002
glfls 
expires:202610080800;;696789

open lake forecast for lake superior
national weather service marquette mi
401 pm edt wed oct 7 2026

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

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

.synopsis...

29.7 inch troughing continues through this evening as the associated 
29.4 inch low tracks eastward across far northern ontario over james 
bay. high pressure then builds in from the canadian prairies and 
northern plains late in the work week, shifting into the ohio river 
valley early friday. this will result in 29.9 inch ridging over lake 
superior on thursday strengthening to 30.1 inches on friday. a 29.4 
inch clipper low then develops off the northern rockies late friday, 
creating a tight pressure gradient over the great lakes as the high 
pressure center remains over the northeast us through saturday. 29.8 
inch troughing moves over the lake sunday morning as troughing 
extends eastward from the southwest us. ridging returns over the 
lake tuesday morning as high pressure builds once more over the 
northern plains. 




lsz264-080800-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
401 pm edt wed oct 7 2026

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

$$

fzus63 kmqt 072002
glfls 
expires:202610080800;;696790

open lake forecast for lake superior
national weather service marquette mi
401 pm edt wed oct 7 2026

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

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

.synopsis...

29.7 inch troughing continues through this evening as the associated 
29.4 inch low tracks eastward across far northern ontario over james 
bay. high pressure then builds in from the canadian prairies and 
northern plains late in the work week, shifting into the ohio river 
valley early friday. this will result in 29.9 inch ridging over lake 
superior on thursday strengthening to 30.1 inches on friday. a 29.4 
inch clipper low then develops off the northern rockies late friday, 
creating a tight pressure gradient over the great lakes as the high 
pressure center remains over the northeast us through saturday. 29.8 
inch troughing moves over the lake sunday morning as troughing 
extends eastward from the southwest us. ridging returns over the 
lake tuesday morning as high pressure builds once more over the 
northern plains. 




lsz265-080800-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
401 pm edt wed oct 7 2026

.late this afternoon...west winds 20 to 30 knots. a chance of
showers. waves 3 to 5 feet occasionally to 7 feet. 
.tonight...northwest winds 20 to 30 knots increasing to 30 knots
with a few gale force gusts to 35 knots possible late. a slight
chance of showers. waves subsiding to 2 to 4 feet, then building
to 3 to 6 feet occasionally to 8 feet. 
.thursday...northwest winds to 30 knots with a few gale force
gusts to 35 knots possible diminishing to 20 to 30 knots late.
waves building to 4 to 7 feet occasionally to 9 feet, then
subsiding to 3 to 5 feet occasionally to 7 feet. 
.thursday night...west winds 15 to 25 knots diminishing to 10 to
20 knots after midnight. waves subsiding to calm to 2 feet. 
.friday...southwest winds 10 to 20 knots backing southeast by mid
afternoon. waves calm to 2 feet. 
.friday night...southeast winds 20 to 30 knots. waves building to
2 to 4 feet. 
.saturday...southeast winds 20 to 30 knots becoming south gales
to 35 knots by mid afternoon. waves building to 3 to 6 feet
occasionally to 8 feet. 
.saturday night...south gales to 40 knots veering southwest after
midnight. waves subsiding to 3 to 6 feet occasionally to 8 feet. 
.sunday...southwest winds 20 to 30 knots veering northwest. a
chance of showers. waves subsiding to 1 to 3 feet, then building
to 3 to 6 feet occasionally to 8 feet. 
.monday...north gales to 35 knots. showers likely. waves
subsiding to 3 to 6 feet occasionally to 8 feet. 

$$

fzus63 kmqt 072002
glfls 
expires:202610080800;;696791

open lake forecast for lake superior
national weather service marquette mi
401 pm edt wed oct 7 2026

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

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

.synopsis...

29.7 inch troughing continues through this evening as the associated 
29.4 inch low tracks eastward across far northern ontario over james 
bay. high pressure then builds in from the canadian prairies and 
northern plains late in the work week, shifting into the ohio river 
valley early friday. this will result in 29.9 inch ridging over lake 
superior on thursday strengthening to 30.1 inches on friday. a 29.4 
inch clipper low then develops off the northern rockies late friday, 
creating a tight pressure gradient over the great lakes as the high 
pressure center remains over the northeast us through saturday. 29.8 
inch troughing moves over the lake sunday morning as troughing 
extends eastward from the southwest us. ridging returns over the 
lake tuesday morning as high pressure builds once more over the 
northern plains. 




lsz266-080800-
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 pm edt wed oct 7 2026

.late this afternoon...west winds 20 to 30 knots. a chance of
showers. waves 3 to 5 feet occasionally to 7 feet. 
.tonight...northwest winds 20 to 30 knots. a slight chance of
thunderstorms through midnight. a chance of showers. waves
building to 3 to 6 feet occasionally to 8 feet. 
.thursday...northwest winds to 30 knots with a few gale force
gusts to 35 knots possible diminishing to 20 to 30 knots in the
afternoon. a slight chance of showers through early afternoon.
waves building to 5 to 9 feet occasionally to 11 feet. 
.thursday night...northwest winds 15 to 25 knots diminishing to
5 to 15 knots after midnight, then backing west late. waves
subsiding to 1 to 3 feet. 
.friday...southwest winds 10 to 20 knots backing south by mid
afternoon. waves subsiding to calm to 2 feet. 
.friday night...southeast winds 15 to 25 knots increasing to
20 to 30 knots after midnight. waves building to 2 to 4 feet. 
.saturday...southeast winds 20 to 30 knots veering south by mid
afternoon. waves building to 4 to 7 feet occasionally to 9 feet. 
.saturday night...south gales to 35 knots. waves subsiding to
3 to 6 feet occasionally to 8 feet. 
.sunday...south winds 20 to 30 knots veering southwest. a chance
of showers. waves subsiding to 3 to 6 feet occasionally to
8 feet. 
.monday...north gales to 35 knots. a chance of rain showers.
waves 3 to 6 feet occasionally to 8 feet. 

$$

fzus63 kmqt 072002
glfls 
expires:202610080800;;696792

open lake forecast for lake superior
national weather service marquette mi
401 pm edt wed oct 7 2026

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

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

.synopsis...

29.7 inch troughing continues through this evening as the associated 
29.4 inch low tracks eastward across far northern ontario over james 
bay. high pressure then builds in from the canadian prairies and 
northern plains late in the work week, shifting into the ohio river 
valley early friday. this will result in 29.9 inch ridging over lake 
superior on thursday strengthening to 30.1 inches on friday. a 29.4 
inch clipper low then develops off the northern rockies late friday, 
creating a tight pressure gradient over the great lakes as the high 
pressure center remains over the northeast us through saturday. 29.8 
inch troughing moves over the lake sunday morning as troughing 
extends eastward from the southwest us. ridging returns over the 
lake tuesday morning as high pressure builds once more over the 
northern plains. 




lsz267-080800-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
401 pm edt wed oct 7 2026

.late this afternoon...west winds 20 to 30 knots. a chance of
showers and a slight chance of thunderstorms. waves 3 to 5 feet
occasionally to 7 feet. 
.tonight...northwest winds 20 to 30 knots. a slight chance of
thunderstorms through midnight. a chance of showers. waves
building to 3 to 6 feet occasionally to 8 feet. 
.thursday...northwest winds 20 to 30 knots increasing to 30 knots
with a few gale force gusts to 35 knots possible in the
afternoon. a slight chance of showers. waves building to 5 to
9 feet occasionally to 11 feet. 
.thursday night...northwest winds 15 to 25 knots diminishing to
10 to 20 knots after midnight. a slight chance of showers through
midnight. waves subsiding to 1 to 3 feet. 
.friday...west winds 10 to 20 knots becoming south 5 to 15 knots
by mid afternoon. waves subsiding to calm to 2 feet. 
.friday night...south winds 10 to 20 knots becoming southeast
20 to 30 knots after midnight. waves building to 1 to 3 feet. 
.saturday...southeast winds 20 to 30 knots veering south by mid
afternoon. waves building to 3 to 6 feet occasionally to 8 feet. 
.saturday night...south gales to 35 knots diminishing to 20 to
30 knots after midnight. waves building to 4 to 7 feet
occasionally to 9 feet, then subsiding to 3 to 6 feet
occasionally to 8 feet. 
.sunday...south winds 15 to 25 knots veering southwest. a chance
of showers. waves subsiding to 2 to 4 feet, then building to 4 to
7 feet occasionally to 9 feet. 
.monday...north winds 20 to 30 knots. a chance of showers. waves
subsiding to 3 to 6 feet occasionally to 8 feet. 

$$