fzus61 kbuf 081403
glflo 
expires:202610082100;;739260

open lake forecast for lake ontario
national weather service buffalo ny
1002 am edt thu oct 8 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 weak trough averaging 29.7 inches lingers over the 
lake today. tonight 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. the ridge 
should exit slowly eastward friday night through saturday and allow 
a warm front to drift northward across the lake. on sunday through 
tuesday, a weak trough averaging 29.9 inches should overspread our 
area generally from the west and a cold front should sweep eastward 
across the lake on tuesday. simultaneously, the future remnant low 
of isaias should wobble northeastward from near the lower ohio 
valley to atlantic waters south of nova scotia and weaken to 29.6 
inches during sunday through tuesday.


loz063>065-082100-
lake ontario open waters from hamlin beach to the saint lawrence
river-
1002 am edt thu oct 8 2026

.this afternoon...west winds 15 to 20 knots. a chance of
waterspouts. a chance of showers. waves 3 to 6 feet. 
.tonight...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 in
the morning. a chance of showers in the morning. waves 3 to
5 feet subsiding to 2 to 4 feet. 
.friday night...west winds 5 to 15 knots becoming east less than
10 knots. waves 2 to 4 feet subsiding to 1 to 3 feet. 
.saturday...southeast winds 5 to 10 knots becoming south and
increasing to 15 to 20 knots. waves 1 to 3 feet. 
.sunday...south winds 15 to 20 knots diminishing to 10 to
15 knots. a chance of showers during the day, then showers likely
sunday night. waves 1 to 3 feet. 
.monday...southwest winds 5 to 10 knots increasing to 15 to
20 knots. a chance of showers during the day, then showers likely
monday night. waves 1 to 3 feet building to 3 to 5 feet. 

$$

fzus61 kbuf 081403
glflo 
expires:202610082100;;739259

open lake forecast for lake ontario
national weather service buffalo ny
1002 am edt thu oct 8 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 weak trough averaging 29.7 inches lingers over the 
lake today. tonight 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. the ridge 
should exit slowly eastward friday night through saturday and allow 
a warm front to drift northward across the lake. on sunday through 
tuesday, a weak trough averaging 29.9 inches should overspread our 
area generally from the west and a cold front should sweep eastward 
across the lake on tuesday. simultaneously, the future remnant low 
of isaias should wobble northeastward from near the lower ohio 
valley to atlantic waters south of nova scotia and weaken to 29.6 
inches during sunday through tuesday.


loz062-082100-
lake ontario open waters from the niagara river to hamlin beach-
1002 am edt thu oct 8 2026

.this afternoon...west winds 15 to 20 knots. waves 3 to 5 feet. 
.tonight...west winds 15 to 20 knots. waves 2 to 4 feet. 
.friday...west winds 15 to 20 knots diminishing to 10 to
15 knots. waves 2 to 4 feet subsiding to 1 to 3 feet. 
.friday night...northwest winds 10 knots or less becoming
southeast. waves 2 feet or less. 
.saturday...southeast winds 5 to 15 knots becoming south. waves
2 feet or less. 
.sunday...south winds 5 to 10 knots becoming southeast. a chance
of showers during the day, then showers likely sunday night.
waves 2 feet or less. 
.monday...west winds 5 to 15 knots becoming southwest 15 to
20 knots. showers likely monday night. waves 1 foot or less
building to 2 to 4 feet. 

$$

fzus61 kcle 081319
glfle 
expires:202610082015;;738284

open lake forecast for lake erie
national weather service cleveland oh
919 am edt thu oct 8 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 trough averaging 30.00 inches across the eastern great lakes
will weaken today. meanwhile high pressure of 30.30 inches will
build from the upper midwest to ohio by tonight. high pressure
will gradually build to new england by saturday. the remnants of
isaias will weaken to 29.80 inches as it tracks through the ohio
valley on sunday. a ridge of 29.90 inches will build in behind it
on monday.


lez061-166>169-082015-
ripley to buffalo ny extending from 5nm off shoreline to us-
canadian border-
avon point to willowick oh beyond 5 nm off shoreline to us-
canadian border-willowick to geneva-on-the-
lake oh beyond 5nm off shoreline to us-canadian border-geneva-on-
the-lake to conneaut oh beyond 5 nm off shoreline to us-
canadian border-
conneaut oh to ripley ny beyond 5 nm off shoreline to us-
canadian border-
919 am edt thu oct 8 2026

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

$$

fzus61 kcle 081319
glfle 
expires:202610082015;;738282

open lake forecast for lake erie
national weather service cleveland oh
919 am edt thu oct 8 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 trough averaging 30.00 inches across the eastern great lakes
will weaken today. meanwhile high pressure of 30.30 inches will
build from the upper midwest to ohio by tonight. high pressure
will gradually build to new england by saturday. the remnants of
isaias will weaken to 29.80 inches as it tracks through the ohio
valley on sunday. a ridge of 29.90 inches will build in behind it
on monday.


lez162-163-082015-
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-
919 am edt thu oct 8 2026

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

$$

fzus61 kcle 081319
glfle 
expires:202610082015;;738283

open lake forecast for lake erie
national weather service cleveland oh
919 am edt thu oct 8 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 trough averaging 30.00 inches across the eastern great lakes
will weaken today. meanwhile high pressure of 30.30 inches will
build from the upper midwest to ohio by tonight. high pressure
will gradually build to new england by saturday. the remnants of
isaias will weaken to 29.80 inches as it tracks through the ohio
valley on sunday. a ridge of 29.90 inches will build in behind it
on monday.


lez164-165-082015-
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-
919 am edt thu oct 8 2026

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

$$

fzus63 kdtx 081346
glflh 
expires:202610082200;;738823

open lake forecast for lake huron
national weather service detroit/pontiac mi
946 am edt thu oct 8 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...persistent influence from quebec low pressure
maintains modest post-frontal northwesterly winds today with 
seasonable conditions. high pressure builds in from the west 
friday shifting winds southerly. prevailing rain-free conditions 
expected until the next system approaches saturday night.


lhz361-362-082200-
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-
946 am edt thu oct 8 2026

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


$$

fzus63 kdtx 081346
glfsc 
expires:202610082200;;738826

lake st clair forecast
national weather service detroit/pontiac mi
946 am edt thu oct 8 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...persistent influence from quebec low pressure
maintains modest post-frontal northwesterly winds today with 
seasonable conditions. high pressure builds in from the west 
friday shifting winds southerly. prevailing rain-free conditions 
expected until the next system approaches saturday night.


lcz460-082200-
lake st clair-
946 am edt thu oct 8 2026

.rest of today...west winds 10 to 15 knots. sunny. waves 2 feet or
less.
.tonight...west winds 10 to 15 knots diminishing to 5 to 10 knots
early in the morning. clear. waves 2 feet or less.
.friday...west winds 5 to 10 knots backing to the south early in the
afternoon. sunny. waves 2 feet or less.
.friday night...southeast 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. sunny becoming mostly sunny
in the afternoon becoming partly cloudy. waves 2 feet or less.
.sunday...southeast winds 10 to 15 knots. mostly cloudy with light
rain likely. waves 2 feet or less.
.monday...southwest winds 10 to 15 knots. partly cloudy. waves 2
feet or less.

$$

fzus63 kdtx 081346
glflh 
expires:202610082200;;738824

open lake forecast for lake huron
national weather service detroit/pontiac mi
946 am edt thu oct 8 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...persistent influence from quebec low pressure
maintains modest post-frontal northwesterly winds today with 
seasonable conditions. high pressure builds in from the west 
friday shifting winds southerly. prevailing rain-free conditions 
expected until the next system approaches saturday night.


lhz363-462>464-082200-
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-
946 am edt thu oct 8 2026

.rest of today...west winds 15 to 20 knots. waves 3 to 5 feet. 
.tonight...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...southeast winds 5 to 10 knots becoming south
10 to 15 knots in the late evening and overnight. waves 1 to
3 feet. 
.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 15 to
20 knots. rain likely by midnight. waves 1 to 3 feet building to
3 to 5 feet by midnight. 


$$

fzus63 kmkx 081402
glflm 
expires:202610090330;;739257

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
902 am cdt thu oct 8 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...

west to northwest winds will persist today 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 develops in the northern plains. the tight pressure 
gradient over lake michigan will produce breezy southerly winds up
to 30 knots from friday night through sunday morning. a few gale 
force gusts may occur in the northern half of the lake saturday 
afternoon and evening. 

lighter winds are expected monday as a weak low pressure trough 
around 29.7 inches slowly moves from minnesota to wisconsin. look 
for gusty northwest winds to develop monday night into 
tuesday after the passage of a cold front as high pressure of 
30.1 inches builds into the upper midwest. 


lmz080-669-671-673-675-777-779-870-872-874-876-878-090330-
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-
902 am cdt thu oct 8 2026

sheboygan wi to pentwater mi south...

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

$$

fzus63 kmkx 081402
glflm 
expires:202610090330;;739256

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
902 am cdt thu oct 8 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...

west to northwest winds will persist today 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 develops in the northern plains. the tight pressure 
gradient over lake michigan will produce breezy southerly winds up
to 30 knots from friday night through sunday morning. a few gale 
force gusts may occur in the northern half of the lake saturday 
afternoon and evening. 

lighter winds are expected monday as a weak low pressure trough 
around 29.7 inches slowly moves from minnesota to wisconsin. look 
for gusty northwest winds to develop monday night into 
tuesday after the passage of a cold front as high pressure of 
30.1 inches builds into the upper midwest. 


lmz261-362-364-366-563-565-567-868-090330-
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-
902 am cdt thu oct 8 2026

sheboygan wi to pentwater mi north...

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

$$

fzus63 kmqt 081401
glfls 
expires:202610082000;;739224

open lake forecast for lake superior
national weather service marquette mi
1001 am edt thu oct 8 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...

ridging steadily builds to 29.9 inches today as the 30.1 inch parent 
high digs from the northern plains into the mid-atlantic today and 
tonight. the parent high strengthens to 30.2 inches tonight, 
allowing ridging over lake superior to increase to 30.1 inches. a 
29.3 inch clipper over southern alberta on friday night splits and 
creates a 29.4 inch low over the northern plains and canadian 
prairies by saturday. this low is expected to bring a gradient of 
29.6 to 29.9 inch troughing back over lake superior on saturday, 
which flattens out to around 29.8 inch troughing by sunday as the 
low weakens to 29.7 inches near lake winnipeg by the end of the 
weekend. a subtle 29.7 inch shortwave low moves over the lake sunday 
night and remains through monday evening. an area of high pressure 
builds over the northern plains monday night into tuesday morning 
and is expected to move into the area tuesday afternoon.




lsz266-082000-
lake superior east of a line from manitou island to marquette mi
and west of a line from grand marais mi to the us/canadian border
beyond 5nm from shore-
1001 am edt thu oct 8 2026

.rest of today...northwest winds to 30 knots with a few gale
force gusts to 35 knots possible diminishing to 20 to 30 knots
late. a chance of showers. waves 5 to 9 feet occasionally to
11 feet, then subsiding to 5 to 8 feet occasionally to 10 feet. 
.tonight...northwest winds 10 to 20 knots. a chance of showers
through midnight. waves subsiding to 1 to 3 feet. 
.friday...west winds 5 to 15 knots veering northwest in the
afternoon, then becoming southeast 10 to 20 knots late. 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 4 to 7 feet
occasionally to 9 feet. 
.saturday...south winds 20 to 30 knots. waves building to 4 to
8 feet occasionally to 10 feet. 
.saturday night...south winds 20 to 30 knots. waves building to
5 to 8 feet occasionally to 10 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. 
.monday...north gales to 35 knots diminishing to 20 to 30 knots.
a chance of showers. waves building to 5 to 8 feet occasionally
to 10 feet. 

$$

fzus63 kmqt 081401
glfls 
expires:202610082000;;739225

open lake forecast for lake superior
national weather service marquette mi
1001 am edt thu oct 8 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...

ridging steadily builds to 29.9 inches today as the 30.1 inch parent 
high digs from the northern plains into the mid-atlantic today and 
tonight. the parent high strengthens to 30.2 inches tonight, 
allowing ridging over lake superior to increase to 30.1 inches. a 
29.3 inch clipper over southern alberta on friday night splits and 
creates a 29.4 inch low over the northern plains and canadian 
prairies by saturday. this low is expected to bring a gradient of 
29.6 to 29.9 inch troughing back over lake superior on saturday, 
which flattens out to around 29.8 inch troughing by sunday as the 
low weakens to 29.7 inches near lake winnipeg by the end of the 
weekend. a subtle 29.7 inch shortwave low moves over the lake sunday 
night and remains through monday evening. an area of high pressure 
builds over the northern plains monday night into tuesday morning 
and is expected to move into the area tuesday afternoon.




lsz267-082000-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
1001 am edt thu oct 8 2026

.rest of today...northwest winds 20 to 30 knots increasing to
30 knots with a few gale force gusts to 35 knots possible in the
afternoon, then diminishing to 20 to 30 knots late. a chance of
showers. waves 5 to 8 feet occasionally to 10 feet building to
8 to 11 feet occasionally to 14 feet, then subsiding to 6 to
9 feet occasionally to 11 feet. 
.tonight...northwest winds 15 to 25 knots diminishing to 10 to
20 knots after midnight. a chance of showers through midnight.
waves subsiding to 1 to 3 feet. 
.friday...west winds 10 to 20 knots becoming northwest 5 to
15 knots in the afternoon, then veering east late. waves
subsiding to calm to 2 feet. 
.friday night...southeast winds 10 to 20 knots increasing to
20 to 30 knots after midnight. waves building to 3 to 6 feet
occasionally to 8 feet. 
.saturday...southeast winds 20 to 30 knots veering south by mid
afternoon. waves building to 4 to 7 feet occasionally to 9 feet,
then subsiding 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. waves
subsiding to 1 to 3 feet, then building to 2 to 4 feet. 
.monday...north winds 20 to 30 knots. a chance of showers. waves
building to 5 to 8 feet occasionally to 10 feet. 

$$

fzus63 kmqt 081401
glfls 
expires:202610082000;;739220

open lake forecast for lake superior
national weather service marquette mi
1001 am edt thu oct 8 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...

ridging steadily builds to 29.9 inches today as the 30.1 inch parent 
high digs from the northern plains into the mid-atlantic today and 
tonight. the parent high strengthens to 30.2 inches tonight, 
allowing ridging over lake superior to increase to 30.1 inches. a 
29.3 inch clipper over southern alberta on friday night splits and 
creates a 29.4 inch low over the northern plains and canadian 
prairies by saturday. this low is expected to bring a gradient of 
29.6 to 29.9 inch troughing back over lake superior on saturday, 
which flattens out to around 29.8 inch troughing by sunday as the 
low weakens to 29.7 inches near lake winnipeg by the end of the 
weekend. a subtle 29.7 inch shortwave low moves over the lake sunday 
night and remains through monday evening. an area of high pressure 
builds over the northern plains monday night into tuesday morning 
and is expected to move into the area tuesday afternoon.




lsz162-082000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1001 am edt thu oct 8 2026 /901 am cdt thu oct 8 2026/

.rest of today...west winds 15 to 25 knots diminishing to 10 to
20 knots late. waves 1 to 3 feet subsiding to calm to 2 feet. 
.tonight...west winds 5 to 15 knots becoming southwest less than
10 knots late. waves calm to 2 feet. 
.friday...east winds less than 10 knots increasing to 10 to
20 knots. waves calm to 2 feet. 
.friday night...east winds 10 to 20 knots veering southeast after
midnight. waves building to 3 to 5 feet occasionally to 7 feet,
then subsiding to 2 to 4 feet. 
.saturday...south winds 15 to 25 knots increasing to 20 to
30 knots by mid afternoon. waves subsiding to 1 to 3 feet, then
building to 2 to 4 feet. 
.saturday night...southwest winds 20 to 30 knots. waves building
to 3 to 6 feet occasionally to 8 feet. 
.sunday...southwest winds 10 to 20 knots becoming north 15 to
25 knots. showers likely. waves subsiding to calm to 2 feet, then
building to 2 to 4 feet. 
.monday...north winds 15 to 25 knots. a chance of showers. waves
building to 3 to 5 feet occasionally to 7 feet, then subsiding to
2 to 4 feet. 

$$

fzus63 kmqt 081401
glfls 
expires:202610082000;;739221

open lake forecast for lake superior
national weather service marquette mi
1001 am edt thu oct 8 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...

ridging steadily builds to 29.9 inches today as the 30.1 inch parent 
high digs from the northern plains into the mid-atlantic today and 
tonight. the parent high strengthens to 30.2 inches tonight, 
allowing ridging over lake superior to increase to 30.1 inches. a 
29.3 inch clipper over southern alberta on friday night splits and 
creates a 29.4 inch low over the northern plains and canadian 
prairies by saturday. this low is expected to bring a gradient of 
29.6 to 29.9 inch troughing back over lake superior on saturday, 
which flattens out to around 29.8 inch troughing by sunday as the 
low weakens to 29.7 inches near lake winnipeg by the end of the 
weekend. a subtle 29.7 inch shortwave low moves over the lake sunday 
night and remains through monday evening. an area of high pressure 
builds over the northern plains monday night into tuesday morning 
and is expected to move into the area tuesday afternoon.




lsz263-082000-
lake superior from saxon harbor wi to upper entrance to portage
canal mi 5nm off shore to the us/canadian border including isle
royale national park-
1001 am edt thu oct 8 2026

.rest of today...west winds 15 to 25 knots. waves 3 to 6 feet
occasionally to 8 feet subsiding to 2 to 4 feet. 
.tonight...west winds 5 to 15 knots veering northwest after
midnight, then backing southwest late. waves subsiding to calm to
2 feet. 
.friday...south winds less than 10 knots becoming southeast 5 to
15 knots in the afternoon, then becoming east 10 to 20 knots
late. waves calm to 2 feet. 
.friday night...southeast winds 15 to 25 knots diminishing to
10 to 20 knots after midnight. waves building to 3 to 5 feet
occasionally to 7 feet. 
.saturday...south winds 15 to 25 knots increasing to 20 to
30 knots by mid afternoon. waves subsiding to 2 to 4 feet. 
.saturday night...southwest winds 20 to 30 knots. waves building
to 4 to 7 feet occasionally to 9 feet, then subsiding 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...north winds 20 to 30 knots. rain showers likely. waves
building to 3 to 6 feet occasionally to 8 feet. 

$$

fzus63 kmqt 081401
glfls 
expires:202610082000;;739222

open lake forecast for lake superior
national weather service marquette mi
1001 am edt thu oct 8 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...

ridging steadily builds to 29.9 inches today as the 30.1 inch parent 
high digs from the northern plains into the mid-atlantic today and 
tonight. the parent high strengthens to 30.2 inches tonight, 
allowing ridging over lake superior to increase to 30.1 inches. a 
29.3 inch clipper over southern alberta on friday night splits and 
creates a 29.4 inch low over the northern plains and canadian 
prairies by saturday. this low is expected to bring a gradient of 
29.6 to 29.9 inch troughing back over lake superior on saturday, 
which flattens out to around 29.8 inch troughing by sunday as the 
low weakens to 29.7 inches near lake winnipeg by the end of the 
weekend. a subtle 29.7 inch shortwave low moves over the lake sunday 
night and remains through monday evening. an area of high pressure 
builds over the northern plains monday night into tuesday morning 
and is expected to move into the area tuesday afternoon.




lsz264-082000-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
1001 am edt thu oct 8 2026

.rest of today...northwest winds 20 to 30 knots diminishing to
15 to 25 knots late. waves 4 to 7 feet occasionally to 9 feet
subsiding to 2 to 4 feet. 
.tonight...northwest winds 10 to 20 knots diminishing to 5 to
15 knots after midnight. sprinkles through midnight. waves
subsiding to calm to 2 feet. 
.friday...northwest winds less than 10 knots backing southeast in
the afternoon, then increasing to 5 to 15 knots late. waves calm
to 2 feet. 
.friday night...southeast winds 15 to 25 knots. waves building to
4 to 7 feet occasionally to 9 feet. 
.saturday...southeast winds 15 to 25 knots veering south by mid
afternoon. waves building to 5 to 8 feet occasionally to 10 feet,
then subsiding to 3 to 6 feet occasionally to 8 feet. 
.saturday night...south winds 20 to 30 knots veering southwest
after midnight. waves 3 to 6 feet occasionally to 8 feet. 
.sunday...southwest winds 15 to 25 knots veering north. showers
likely. waves subsiding to 1 to 3 feet, then building to 2 to
4 feet. 
.monday...north winds 20 to 30 knots. rain showers likely. waves
building to 3 to 6 feet occasionally to 8 feet. 

$$

fzus63 kmqt 081401
glfls 
expires:202610082000;;739223

open lake forecast for lake superior
national weather service marquette mi
1001 am edt thu oct 8 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...

ridging steadily builds to 29.9 inches today as the 30.1 inch parent 
high digs from the northern plains into the mid-atlantic today and 
tonight. the parent high strengthens to 30.2 inches tonight, 
allowing ridging over lake superior to increase to 30.1 inches. a 
29.3 inch clipper over southern alberta on friday night splits and 
creates a 29.4 inch low over the northern plains and canadian 
prairies by saturday. this low is expected to bring a gradient of 
29.6 to 29.9 inch troughing back over lake superior on saturday, 
which flattens out to around 29.8 inch troughing by sunday as the 
low weakens to 29.7 inches near lake winnipeg by the end of the 
weekend. a subtle 29.7 inch shortwave low moves over the lake sunday 
night and remains through monday evening. an area of high pressure 
builds over the northern plains monday night into tuesday morning 
and is expected to move into the area tuesday afternoon.




lsz265-082000-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
1001 am edt thu oct 8 2026

.rest of today...northwest winds to 30 knots with a few gale
force gusts to 35 knots possible diminishing to 20 to 30 knots
late. waves 5 to 8 feet occasionally to 10 feet 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 backing west late. sprinkles
through midnight. waves subsiding to calm to 2 feet. 
.friday...west winds 5 to 15 knots backing east in the afternoon,
then increasing to 10 to 20 knots late. waves calm to 2 feet. 
.friday night...southeast winds 20 to 30 knots diminishing to
15 to 25 knots after midnight. waves building to 3 to 6 feet
occasionally to 8 feet. 
.saturday...south winds 20 to 30 knots. waves subsiding to 3 to
5 feet occasionally to 7 feet. 
.saturday night...south gales to 35 knots becoming southwest
20 to 30 knots after midnight. waves subsiding to 2 to 4 feet. 
.sunday...south winds 15 to 25 knots veering northwest. a chance
of showers. waves subsiding to calm to 2 feet, then building to
2 to 4 feet. 
.monday...north gales to 40 knots. showers likely. waves building
to 5 to 8 feet occasionally to 10 feet. 

$$