fzus61 kbuf 120202
glflo 
expires:202609120900;;300719

open lake forecast for lake ontario
national weather service buffalo ny
1002 pm edt fri sep 11 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 high pressure ridge averaging 30.0 inches exits 
toward new england through saturday. a warm front will sweep 
northeastward across the lake saturday evening before a cold front 
sweeps eastward across the lake on sunday. behind the cold front, a 
ridge averaging 30.2 inches will slide eastward across the lower 
great lakes through monday. the ridge should exit toward new england 
on tuesday and allow a warm front to sweep northeastward across the 
lake. on wednesday, a cold front should sweep eastward across the 
lake and be followed by a ridge averaging 30.1 inches and building 
from the upper midwest.


loz063>065-120900-
lake ontario open waters from hamlin beach to the saint lawrence
river-
1002 pm edt fri sep 11 2026

.overnight...south winds 10 knots or less. waves 1 foot or
less. 
.saturday...southeast winds 5 to 15 knots. waves 1 to 3 feet. 
.saturday night...south winds 15 to 20 knots becoming southwest.
a chance of showers. waves 2 to 4 feet. 
.sunday...southwest winds 10 to 15 knots becoming west. a chance
of showers in the afternoon. waves 1 to 3 feet. 
.sunday night...west winds 15 to 20 knots becoming northwest. a
chance of showers. waves 2 to 4 feet. 
.monday...northwest winds 15 to 20 knots becoming southeast 5 to
15 knots. waves 1 to 3 feet. 
.tuesday...south winds 15 to 20 knots. a chance of showers
tuesday night. waves 3 to 5 feet subsiding to 1 to 3 feet. 
.wednesday...southwest winds 15 to 20 knots becoming north and
diminishing to 10 knots or less. a chance of showers. waves 1 to
3 feet subsiding to 1 foot or less. 

$$

fzus61 kbuf 120202
glflo 
expires:202609120900;;300718

open lake forecast for lake ontario
national weather service buffalo ny
1002 pm edt fri sep 11 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 high pressure ridge averaging 30.0 inches exits 
toward new england through saturday. a warm front will sweep 
northeastward across the lake saturday evening before a cold front 
sweeps eastward across the lake on sunday. behind the cold front, a 
ridge averaging 30.2 inches will slide eastward across the lower 
great lakes through monday. the ridge should exit toward new england 
on tuesday and allow a warm front to sweep northeastward across the 
lake. on wednesday, a cold front should sweep eastward across the 
lake and be followed by a ridge averaging 30.1 inches and building 
from the upper midwest.


loz062-120900-
lake ontario open waters from the niagara river to hamlin beach-
1002 pm edt fri sep 11 2026

.overnight...southeast winds 10 knots or less. waves 1 foot
or less. 
.saturday...south winds 5 to 10 knots becoming east. waves 1 foot
or less. 
.saturday night...southeast winds 5 to 15 knots becoming
southwest. waves 2 feet or less. 
.sunday...west winds 5 to 15 knots. waves 1 to 2 feet. 
.sunday night...northwest winds 15 to 20 knots. a chance of
showers. waves 1 to 3 feet. 
.monday...north winds 15 to 20 knots becoming southeast 5 to
15 knots. waves 1 to 3 feet. 
.tuesday...south winds 5 to 15 knots becoming southwest. showers
likely tuesday night. waves 1 to 3 feet building to 2 to 4 feet,
then subsiding to 1 to 3 feet. 
.wednesday...southwest winds 10 knots or less becoming north. a
chance of showers. waves 2 feet or less. 

$$

fzus61 kcle 120116
glfle 
expires:202609120815;;300025

open lake forecast for lake erie
national weather service cleveland oh
916 pm edt fri sep 11 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 warm front will lift across the region saturday before a cold
front pushes southeast across the area on sunday. high pressure
30.20 will briefly return on monday, but a series of disturbances
will move across the region tuesday through the middle of next 
week.


lez061-168-169-120815-
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-
916 pm edt fri sep 11 2026

.overnight...east winds 5 to 10 knots becoming southeast.
waves 1 foot or less. 
.saturday...south winds 5 to 10 knots. a slight chance of showers
and thunderstorms early in the afternoon. a chance of showers and
thunderstorms late. waves 1 foot or less. 
.saturday night...south winds 5 to 15 knots becoming southwest. a
chance of showers and thunderstorms in the evening. waves 1 to
3 feet. 
.sunday...west winds 5 to 15 knots. waves 1 to 2 feet. 
.sunday night...northwest winds 10 to 15 knots becoming north
15 to 20 knots. a chance of showers. waves 1 to 3 feet. 
.monday...north winds 15 to 20 knots becoming southeast 5 to
15 knots. waves 1 to 3 feet. 
.tuesday...south winds 15 to 20 knots becoming southwest 10 to
15 knots. a chance of showers tuesday night. waves 2 to 4 feet
subsiding to 1 to 3 feet. 
.wednesday...southwest winds 10 knots or less becoming east. a
chance of showers during the day, then showers likely wednesday
night. waves 1 to 3 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 120116
glfle 
expires:202609120815;;300023

open lake forecast for lake erie
national weather service cleveland oh
916 pm edt fri sep 11 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 warm front will lift across the region saturday before a cold
front pushes southeast across the area on sunday. high pressure
30.20 will briefly return on monday, but a series of disturbances
will move across the region tuesday through the middle of next 
week.


lez162-163-120815-
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-
916 pm edt fri sep 11 2026

.overnight...east winds around 10 knots becoming southeast.
waves 2 feet or less. 
.saturday...south winds 5 to 10 knots becoming southwest. a
slight chance of showers early, then a chance of showers with a
slight chance of thunderstorms. waves 1 foot or less. 
.saturday night...southwest winds 5 to 10 knots becoming west.
waves 1 foot or less. 
.sunday...west winds 5 to 10 knots becoming northwest. waves
1 foot or less. 
.sunday night...northwest winds 10 to 15 knots becoming north
15 to 20 knots. waves 1 to 3 feet. 
.monday...north winds 15 to 20 knots becoming southeast. waves
1 to 3 feet. 
.tuesday...south winds 15 to 20 knots becoming southwest 10 to
15 knots. a chance of showers and thunderstorms tuesday night.
waves 1 to 3 feet. 
.wednesday...southwest winds 5 to 15 knots becoming northeast.
showers likely. waves 2 feet or less. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 120116
glfle 
expires:202609120815;;300024

open lake forecast for lake erie
national weather service cleveland oh
916 pm edt fri sep 11 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 warm front will lift across the region saturday before a cold
front pushes southeast across the area on sunday. high pressure
30.20 will briefly return on monday, but a series of disturbances
will move across the region tuesday through the middle of next 
week.


lez164>167-120815-
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-
916 pm edt fri sep 11 2026

.overnight...east winds around 10 knots becoming southeast.
waves 2 feet or less. 
.saturday...south winds 5 to 10 knots becoming southwest. a
chance of showers late in the morning. a chance of showers with a
slight chance of thunderstorms in the afternoon. waves 1 to
2 feet. 
.saturday night...southwest winds 5 to 15 knots becoming west.
waves 1 to 3 feet. 
.sunday...west winds 5 to 15 knots. waves 2 feet or less. 
.sunday night...northwest winds 10 to 15 knots becoming north
15 to 20 knots. waves 2 feet or less building to 2 to 3 feet. 
.monday...north winds 15 to 20 knots becoming southeast 10 to
15 knots. waves 2 to 4 feet subsiding to 1 to 3 feet. 
.tuesday...south winds 15 to 20 knots becoming southwest 10 to
15 knots. a chance of showers tuesday night. waves 2 to 4 feet
subsiding to 1 to 3 feet. 
.wednesday...southwest winds 5 to 15 knots becoming northeast. a
chance of showers during the day, then showers likely wednesday
night. waves 1 to 3 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus63 kdtx 120149
glfsc 
expires:202609121000;;300417

lake st clair forecast
national weather service detroit/pontiac mi
949 pm edt fri sep 11 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...high pressure, 30.00 inches, will slowly move eastward
towards the east coast through saturday. low pressure, 29.30
inches, lifting over northern ontario then drags a cold front
across the central great lakes late saturday into sunday.


lcz460-121000-
lake st clair-
949 pm edt fri sep 11 2026

.rest of tonight...southeast winds 10 to 15 knots diminishing to 5
to 10 knots early in the morning. mostly clear. waves 2 feet or
less.
.saturday...south winds 5 to 10 knots increasing to 10 to 15 knots
early in the afternoon...then diminishing to 5 to 10 knots late in
the afternoon. partly sunny. waves 2 feet or less.
.saturday night...southwest winds 5 to 10 knots veering to the west
after midnight. mostly clear. waves 2 feet or less.
.sunday...northwest winds 5 to 10 knots increasing to 10 to 15 knots
early in the afternoon. mostly sunny. waves 2 feet or less.
.sunday night...north winds 15 to 20 knots. partly cloudy. waves 1
to 3 feet.
.monday...north winds 10 to 15 knots becoming northeast 5 to 10
knots in the afternoon...then becoming southeast 10 to 15 knots in
the evening. sunny becoming mostly sunny in the afternoon becoming
partly cloudy. waves 2 feet or less.
.tuesday...southwest winds 15 to 20 knots. partly cloudy. showers
likely and a chance of thunderstorms. waves 1 to 3 feet.
.wednesday...northeast winds 5 to 10 knots. mostly cloudy with
showers likely and a chance of thunderstorms. waves 2 feet or less.

$$

fzus63 kdtx 120148
glflh 
expires:202609121000;;300414

open lake forecast for lake huron
national weather service detroit/pontiac mi
948 pm edt fri sep 11 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...high pressure, 30.00 inches, will slowly move eastward
towards the east coast through saturday. low pressure, 29.30
inches, lifting over northern ontario then drags a cold front
across the central great lakes late saturday into sunday.


lhz361>363-121000-
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-
lake huron from sturgeon point to alabaster mi beyond 5nm off
shore-
948 pm edt fri sep 11 2026

.rest of tonight...south winds 10 to 15 knots. waves 2 to 4 feet.
.saturday...south winds 10 to 15 knots. a chance of showers in
the afternoon. waves 2 to 4 feet. 
.saturday night...south winds 10 to 15 knots veering to the
northwest after midnight. a chance of showers in the evening.
waves 2 to 4 feet subsiding to 1 to 3 feet in the late evening
and overnight. 
.sunday...west winds 5 to 10 knots increasing to 10 to 15 knots
in the late morning and afternoon. a chance of showers in the
afternoon. waves 1 to 3 feet building to 2 to 4 feet early in the
afternoon. 
.sunday night...northwest winds 15 to 20 knots with gusts to
around 30 knots decreasing to 10 to 15 knots after midnight.
waves 3 to 5 feet. 
.monday...northwest winds 5 to 10 knots in the morning becoming
light and variable...then becoming southeast 5 to 10 knots late
in the afternoon becoming south 20 to 25 knots with gusts to
35 knot gales. a chance of showers late in the evening. waves
1 to 3 feet building to 8 to 12 feet. waves occasionally around
15 feet. 
.tuesday...south winds to 30 knots with gusts to 40 knot gales
decreasing to 20 to 25 knots with gusts to 40 knot gales in the
late morning and early afternoon...then becoming west 10 to
15 knots with gusts to around 30 knots . showers likely early in
the morning...then a chance of showers . waves 8 to 12 feet
subsiding to 4 to 6 feet . waves occasionally around 15 feet. 
.wednesday...north winds 5 to 10 knots. a chance of showers early
in the morning. waves 1 to 3 feet. 


$$

fzus63 kdtx 120148
glflh 
expires:202609121000;;300415

open lake forecast for lake huron
national weather service detroit/pontiac mi
948 pm edt fri sep 11 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...high pressure, 30.00 inches, will slowly move eastward
towards the east coast through saturday. low pressure, 29.30
inches, lifting over northern ontario then drags a cold front
across the central great lakes late saturday into sunday.


lhz462>464-121000-
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-
948 pm edt fri sep 11 2026

.rest of tonight...southeast winds 5 to 10 knots increasing to
10 to 15 knots after midnight. waves 1 to 3 feet. 
.saturday...south winds 10 to 15 knots. waves 1 to 3 feet. 
.saturday night...south winds 5 to 10 knots becoming southwest
10 to 15 knots by midnight...then veering to the west after
midnight. waves 1 to 3 feet. 
.sunday...north winds 5 to 10 knots backing to the west early in
the afternoon. a chance of showers in the afternoon. waves 1 to
3 feet. 
.sunday night...northwest winds 15 to 20 knots. a chance of
showers in the evening. waves 1 to 3 feet building to 3 to 5 feet
in the late evening and overnight. 
.monday...northwest winds 10 to 15 knots becoming northeast 5 to
10 knots late in the morning...then becoming south 15 to 20 knots
with gusts to around 30 knots late in the evening. a chance of
showers late in the evening. waves 2 to 4 feet subsiding to 1 to
3 feet late in the morning...then building to 6 to 9 feet late in
the evening. waves occasionally around 12 feet. 
.tuesday...south winds 20 to 25 knots with gusts to around
30 knots becoming southwest 10 to 15 knots with gusts to around
30 knots . a chance of showers. rain showers likely by midnight.
waves 6 to 9 feet subsiding to 2 to 4 feet . waves occasionally
around 12 feet. 
.wednesday...northwest winds 5 to 10 knots veering to the north.
a chance of showers until afternoon. a chance of showers by
midnight. waves 2 to 4 feet subsiding to 1 to 3 feet. 


$$

fzus63 kmkx 120216
glflm 
expires:202609120930;;301616

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
916 pm cdt fri sep 11 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...

southerly winds will continue to increase overnight, as a cold
front approaches the region from the west. winds will shift out 
of the west northwest during the day saturday, as the cold front 
moves across the lake. expecting wind gusts to remain primarily in
the 25 to 30 knot range overnight through saturday, though a few
gusts approaching gale force may occur. currently anticipating 
any such gusts to remain brief and isolated enough to preclude the
need for gale warnings, but will continue to monitor trends. 
isolated showers and thunderstorms are possible ahead of the 
approaching cold front, mainly over northern portions of the lake. 

high pressure around 30.2 inches will build in from the northern 
great plains sunday night into monday, bringing decreasing winds 
saturday night through sunday, and light and variable winds 
sunday night into monday. the high will move east of the waters 
monday afternoon and evening, resulting in a south southeast wind
shift. 

winds will increase further and veer south southwest monday night
into tuesday, as low pressure around 29.4 inches develops over 
manitoba. gales continue to appear likely during this time frame, 
with headlines becoming necessary in later forecasts if trends 
continue to hold. periods of showers and thunderstorms will 
accompany the developing low from as early as monday evening 
through at least tuesday afternoon. widespread severe weather 
hazards appear low over lake michigan at this time, though an 
isolated stronger storm with gusty winds may occur. winds will 
trend northerly behind a cold front tuesday night into wednesday, 
steadily tapering away from gale force thresholds in the process.


lmz080-669-671-673-675-777-779-870-872-874-876-878-120930-
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-
916 pm cdt fri sep 11 2026

sheboygan wi to pentwater mi south...

.rest of tonight...southeast winds 10 to 20 kt becoming south
15 to 25 kt. waves 3 to 5 ft. 
.saturday...south winds 15 to 25 kt becoming southwest 10 to
20 kt. waves 4 to 6 ft occasionally to 8 ft. 
.saturday night...northwest winds 10 to 20 kt becoming north.
waves 3 to 5 ft. 
.sunday...north winds 10 to 20 kt. waves 3 to 5 ft. 
.sunday night...north winds 10 to 20 kt becoming northeast. waves
3 to 5 ft subsiding to 2 to 4 ft. 
.monday...east winds to 30 kt becoming southeast gales to 40 kt
in the afternoon. waves 3 to 5 ft building to 4 to 7 ft
occasionally to 9 ft. 
.monday night...southeast gales to 40 kt becoming south. chance
of showers. waves 8 to 12 ft occasionally to 16 ft building to
10 to 14 ft occasionally to 18 ft. 
.tuesday...southwest gales to 35 kt becoming west to 30 kt.
showers likely. waves 10 to 14 ft occasionally to 18 ft subsiding
to 7 to 10 ft occasionally to 13 ft. 
.wednesday...northeast winds 10 to 20 kt. chance of showers.
waves 2 to 4 ft.  

$$

fzus63 kmkx 120216
glflm 
expires:202609120930;;301615

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
916 pm cdt fri sep 11 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...

southerly winds will continue to increase overnight, as a cold
front approaches the region from the west. winds will shift out 
of the west northwest during the day saturday, as the cold front 
moves across the lake. expecting wind gusts to remain primarily in
the 25 to 30 knot range overnight through saturday, though a few
gusts approaching gale force may occur. currently anticipating 
any such gusts to remain brief and isolated enough to preclude the
need for gale warnings, but will continue to monitor trends. 
isolated showers and thunderstorms are possible ahead of the 
approaching cold front, mainly over northern portions of the lake. 

high pressure around 30.2 inches will build in from the northern 
great plains sunday night into monday, bringing decreasing winds 
saturday night through sunday, and light and variable winds 
sunday night into monday. the high will move east of the waters 
monday afternoon and evening, resulting in a south southeast wind
shift. 

winds will increase further and veer south southwest monday night
into tuesday, as low pressure around 29.4 inches develops over 
manitoba. gales continue to appear likely during this time frame, 
with headlines becoming necessary in later forecasts if trends 
continue to hold. periods of showers and thunderstorms will 
accompany the developing low from as early as monday evening 
through at least tuesday afternoon. widespread severe weather 
hazards appear low over lake michigan at this time, though an 
isolated stronger storm with gusty winds may occur. winds will 
trend northerly behind a cold front tuesday night into wednesday, 
steadily tapering away from gale force thresholds in the process.


lmz261-362-364-366-563-565-567-868-120930-
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-
916 pm cdt fri sep 11 2026

sheboygan wi to pentwater mi north...

.rest of tonight...south winds to 30 kt diminishing to 15 to
25 kt. waves 4 to 6 ft occasionally to 8 ft. 
.saturday...south winds to 30 kt veering to west. slight chance
of showers in the morning, then chance of showers in the
afternoon. waves 4 to 7 ft occasionally to 9 ft subsiding to 4 to
6 ft occasionally to 8 ft. 
.saturday night...northwest winds 10 to 20 kt. waves 2 to 4 ft. 
.sunday...northwest winds 10 to 20 kt increasing to 15 to 25 kt.
waves 2 to 4 ft. 
.sunday night...north winds 10 to 20 kt becoming northeast 10 to
15 kt. waves 2 to 4 ft. 
.monday...east winds 15 to 25 kt becoming southeast gales to
35 kt in the afternoon. waves 1 to 3 ft building to 4 to 7 ft
occasionally to 9 ft. 
.monday night...south gales to 40 kt. showers. waves 12 to 16 ft
occasionally to 21 ft. 
.tuesday...southwest gales to 40 kt becoming west gales to 35 kt.
chance of showers. waves 12 to 16 ft occasionally to 21 ft
subsiding to 8 to 11 ft occasionally to 14 ft. 
.wednesday...northeast winds 10 to 20 kt. waves 1 to 3 ft.  

$$

fzus63 kmqt 120201
glfls 
expires:202609120800;;300678

open lake forecast for lake superior
national weather service marquette mi
1001 pm edt fri sep 11 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...

a 29.6 inch trough extends over western lake superior this evening 
from a 29.2 inch low over hudson bay as a 30.0 inch high exits east 
into new england. the trough crosses the lake through saturday 
afternoon accompanied by a cold front. 30.0 inch ridging builds back 
in from the northern plains on sunday and strengthens to 30.2 inches 
on monday. a 29.5 to 29.7 inch low crosses northern ontario on 
tuesday. 




lsz266-120800-
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 fri sep 11 2026

.rest of tonight...south winds 20 to 30 knots. a chance of
showers. a slight chance of thunderstorms after midnight. waves
3 to 6 feet occasionally to 8 feet. 
.saturday...southwest winds 20 to 30 knots veering west in the
afternoon. a slight chance of showers through early afternoon.
waves subsiding to 2 to 4 feet, then building to 3 to 6 feet
occasionally to 8 feet. 
.saturday night...west winds 20 to 30 knots veering northwest
after midnight. waves 3 to 6 feet occasionally to 8 feet. 
.sunday...northwest winds 20 to 30 knots diminishing to 15 to
25 knots by mid afternoon. waves 3 to 6 feet occasionally to
8 feet. 
.sunday night...northwest winds 15 to 25 knots diminishing to
5 to 15 knots after midnight. waves subsiding to calm to 2 feet. 
.monday...south winds 5 to 15 knots becoming southeast gales to
35 knots by mid afternoon. waves building to 3 to 6 feet
occasionally to 8 feet. 
.monday night...south gales to 40 knots. showers. waves building
to 7 to 11 feet occasionally to 14 feet. 
.tuesday...west gales to 35 knots becoming northwest 20 to
30 knots. waves subsiding to 1 to 3 feet. 
.wednesday...northwest winds 10 to 20 knots. waves subsiding to
calm to 2 feet. 

$$

fzus63 kmqt 120201
glfls 
expires:202609120800;;300679

open lake forecast for lake superior
national weather service marquette mi
1001 pm edt fri sep 11 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...

a 29.6 inch trough extends over western lake superior this evening 
from a 29.2 inch low over hudson bay as a 30.0 inch high exits east 
into new england. the trough crosses the lake through saturday 
afternoon accompanied by a cold front. 30.0 inch ridging builds back 
in from the northern plains on sunday and strengthens to 30.2 inches 
on monday. a 29.5 to 29.7 inch low crosses northern ontario on 
tuesday. 




lsz267-120800-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
1001 pm edt fri sep 11 2026

.rest of tonight...south winds 20 to 30 knots diminishing to
15 to 25 knots after midnight, then increasing to 20 to 30 knots
late. a slight chance of showers after midnight. waves 3 to
5 feet occasionally to 7 feet subsiding to 2 to 4 feet. 
.saturday...south winds 20 to 30 knots veering west in the
afternoon. a chance of showers. waves building to 3 to 5 feet
occasionally to 7 feet, then subsiding to 2 to 4 feet. 
.saturday night...west winds 20 to 30 knots becoming northwest
15 to 25 knots after midnight. waves building to 3 to 6 feet
occasionally to 8 feet. 
.sunday...northwest winds 20 to 30 knots. waves building to 4 to
7 feet occasionally to 9 feet. 
.sunday night...northwest winds 15 to 25 knots diminishing to
10 to 20 knots after midnight. waves subsiding to 1 to 3 feet. 
.monday...northwest winds 5 to 15 knots becoming southeast 10 to
20 knots by mid afternoon. waves subsiding to calm to 2 feet. 
.monday night...south gales to 40 knots. showers. waves building
to 7 to 10 feet occasionally to 13 feet. 
.tuesday...west gales to 35 knots becoming northwest 15 to
25 knots. a chance of showers. waves subsiding to 2 to 4 feet. 
.wednesday...northwest winds 10 to 20 knots veering north. waves
subsiding to calm to 2 feet. 

$$

fzus63 kmqt 120201
glfls 
expires:202609120800;;300674

open lake forecast for lake superior
national weather service marquette mi
1001 pm edt fri sep 11 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...

a 29.6 inch trough extends over western lake superior this evening 
from a 29.2 inch low over hudson bay as a 30.0 inch high exits east 
into new england. the trough crosses the lake through saturday 
afternoon accompanied by a cold front. 30.0 inch ridging builds back 
in from the northern plains on sunday and strengthens to 30.2 inches 
on monday. a 29.5 to 29.7 inch low crosses northern ontario on 
tuesday. 




lsz162-120800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1001 pm edt fri sep 11 2026 /901 pm cdt fri sep 11 2026/

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

$$

fzus63 kmqt 120201
glfls 
expires:202609120800;;300675

open lake forecast for lake superior
national weather service marquette mi
1001 pm edt fri sep 11 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...

a 29.6 inch trough extends over western lake superior this evening 
from a 29.2 inch low over hudson bay as a 30.0 inch high exits east 
into new england. the trough crosses the lake through saturday 
afternoon accompanied by a cold front. 30.0 inch ridging builds back 
in from the northern plains on sunday and strengthens to 30.2 inches 
on monday. a 29.5 to 29.7 inch low crosses northern ontario on 
tuesday. 




lsz263-120800-
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 fri sep 11 2026

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

$$

fzus63 kmqt 120201
glfls 
expires:202609120800;;300676

open lake forecast for lake superior
national weather service marquette mi
1001 pm edt fri sep 11 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...

a 29.6 inch trough extends over western lake superior this evening 
from a 29.2 inch low over hudson bay as a 30.0 inch high exits east 
into new england. the trough crosses the lake through saturday 
afternoon accompanied by a cold front. 30.0 inch ridging builds back 
in from the northern plains on sunday and strengthens to 30.2 inches 
on monday. a 29.5 to 29.7 inch low crosses northern ontario on 
tuesday. 




lsz264-120800-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
1001 pm edt fri sep 11 2026

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

$$

fzus63 kmqt 120201
glfls 
expires:202609120800;;300677

open lake forecast for lake superior
national weather service marquette mi
1001 pm edt fri sep 11 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...

a 29.6 inch trough extends over western lake superior this evening 
from a 29.2 inch low over hudson bay as a 30.0 inch high exits east 
into new england. the trough crosses the lake through saturday 
afternoon accompanied by a cold front. 30.0 inch ridging builds back 
in from the northern plains on sunday and strengthens to 30.2 inches 
on monday. a 29.5 to 29.7 inch low crosses northern ontario on 
tuesday. 




lsz265-120800-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
1001 pm edt fri sep 11 2026

.rest of tonight...south winds 20 to 30 knots. a chance of
showers. a slight chance of thunderstorms after midnight. waves
2 to 4 feet subsiding to 1 to 3 feet. 
.saturday...southwest winds 20 to 30 knots becoming west to
30 knots with a few gale force gusts to 35 knots possible in the
afternoon. a slight chance of showers through early afternoon.
waves building to 3 to 5 feet occasionally to 7 feet. 
.saturday night...west winds 20 to 30 knots veering northwest
after midnight. waves subsiding to 2 to 4 feet. 
.sunday...northwest winds 20 to 30 knots. waves building to 3 to
5 feet occasionally to 7 feet, then subsiding to 2 to 4 feet. 
.sunday night...northwest winds 10 to 20 knots diminishing to
5 to 15 knots after midnight. waves subsiding to calm to 2 feet. 
.monday...south winds 5 to 15 knots becoming southeast gales to
35 knots by mid afternoon. a chance of showers by mid afternoon.
waves building to 3 to 6 feet occasionally to 8 feet. 
.monday night...south gales to 40 knots veering southwest after
midnight. showers. waves building to 6 to 9 feet occasionally to
11 feet, then subsiding to 4 to 7 feet occasionally to 9 feet. 
.tuesday...west gales to 40 knots becoming northwest 15 to
25 knots. waves subsiding to calm to 2 feet. 
.wednesday...northwest winds 10 to 20 knots. waves calm to
2 feet. 

$$