fzus61 kbuf 221402
glflo 
expires:202608222100;;168747

open lake forecast for lake ontario
national weather service buffalo ny
1002 am edt sat aug 22 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 30.1 inches exits toward 
the canadian maritimes today. elsewhere, a 29.6 inch low should 
wobble northeastward from the central great lakes to southwestern 
quebec through monday. in response to the low's track, a warm front 
drifts northeastward across lake ontario tonight and then a cold 
front sweeps eastward across the lake overnight tonight through 
sunday. behind the cold front, a trough averaging 29.8 inches 
lingers over lake ontario through monday. on tuesday through 
wednesday, a ridge averaging 30.1 inches builds from the western and 
central great lakes. the ridge should begin to exit eastward on 
thursday and allow a warm front to sweep northeastward across lake 
ontario.


loz062-222100-
lake ontario open waters from the niagara river to hamlin beach-
1002 am edt sat aug 22 2026

.this afternoon...southeast winds 5 to 10 knots becoming east. a
chance of showers and thunderstorms late. waves around 1 foot. 
.tonight...southeast winds 5 to 15 knots becoming southwest.
showers with a chance of thunderstorms through the early
overnight, then showers likely late. a chance of waterspouts
after midnight. waves 1 to 2 feet. 
.sunday...west winds 15 to 25 knots. a chance of waterspouts.
showers likely in the morning, then showers likely with a chance
of thunderstorms in the afternoon. waves 1 to 3 feet building to
3 to 6 feet. 
.sunday night...west winds 15 to 25 knots. a chance of
waterspouts. a chance of showers and thunderstorms in the
evening, then showers likely overnight. waves 4 to 6 feet. 
.monday...west winds 15 to 25 knots. a chance of waterspouts.
showers during the day, then a chance of showers monday night.
waves 5 to 8 feet subsiding to 3 to 5 feet. waves occasionally
around 10 feet. 
.tuesday...west winds 15 to 20 knots diminishing to less than
10 knots. a chance of waterspouts during the day. a chance of
showers during the day. waves 2 to 4 feet subsiding to 1 foot or
less. 
.wednesday...southwest winds 10 knots or less becoming south.
waves 1 foot or less. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kbuf 221402
glflo 
expires:202608222100;;168748

open lake forecast for lake ontario
national weather service buffalo ny
1002 am edt sat aug 22 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 30.1 inches exits toward 
the canadian maritimes today. elsewhere, a 29.6 inch low should 
wobble northeastward from the central great lakes to southwestern 
quebec through monday. in response to the low's track, a warm front 
drifts northeastward across lake ontario tonight and then a cold 
front sweeps eastward across the lake overnight tonight through 
sunday. behind the cold front, a trough averaging 29.8 inches 
lingers over lake ontario through monday. on tuesday through 
wednesday, a ridge averaging 30.1 inches builds from the western and 
central great lakes. the ridge should begin to exit eastward on 
thursday and allow a warm front to sweep northeastward across lake 
ontario.


loz063>065-222100-
lake ontario open waters from hamlin beach to the saint lawrence
river-
1002 am edt sat aug 22 2026

.this afternoon...southeast winds 5 to 15 knots. waves 1 to 3 feet
subsiding to 1 foot or less. 
.tonight...southeast winds 10 to 15 knots becoming south and
increasing to 15 to 25 knots. showers likely with a chance of
thunderstorms. a chance of waterspouts after midnight. waves 1 to
3 feet building to 3 to 5 feet. 
.sunday...south winds 15 to 25 knots becoming west. a chance of
waterspouts. showers with a chance of thunderstorms. waves 3 to
5 feet building to 3 to 6 feet. 
.sunday night...west winds 15 to 25 knots becoming southwest. a
chance of waterspouts. showers likely with a chance of
thunderstorms in the evening, then showers overnight. waves 3 to
6 feet building to 4 to 7 feet. waves occasionally around 9 feet.
.monday...southwest winds to 30 knots becoming west 15 to
25 knots. a chance of waterspouts. showers. waves 4 to 7 feet
building to 6 to 9 feet, then subsiding to 4 to 7 feet. waves
occasionally around 11 feet. 
.tuesday...west winds 15 to 20 knots diminishing to 5 to
15 knots. a chance of waterspouts during the day. showers likely
during the day, then a chance of showers tuesday night. waves
3 to 6 feet subsiding to 1 to 3 feet. 
.wednesday...west winds 5 to 15 knots becoming south. waves
2 feet or less. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 221341
glfle 
expires:202608222015;;168118

open lake forecast for lake erie
national weather service cleveland oh
941 am edt sat aug 22 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 east through the area this evening. a 
trough averaging 29.80 will linger over the eastern great lakes 
sunday into monday. high pressure 30.00 inches will gradually
build into the region monday through tuesday.


lez162>164-222015-
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-
the islands to vermilion oh beyond 5 nm off shoreline to us-
canadian border-
941 am edt sat aug 22 2026

.rest of today...southwest winds 10 to 15 knots becoming west. a
slight chance of showers late this morning, then a chance of
showers and thunderstorms early this afternoon. showers and
thunderstorms late. waves 2 feet or less. 
.tonight...west winds 10 to 15 knots becoming northwest 15 to
20 knots. showers and thunderstorms likely in the evening, then a
slight chance of showers and thunderstorms after midnight. a
chance of waterspouts after midnight. waves 1 to 3 feet building
to 2 to 4 feet. 
.sunday...northwest winds 15 to 20 knots becoming west. a chance
of waterspouts in the afternoon. a chance of showers in the
afternoon. waves 2 to 4 feet. 
.sunday night...northwest winds 15 to 20 knots. a chance of
waterspouts. a chance of showers. waves 2 to 4 feet. 
.monday...west winds 15 to 20 knots becoming northwest 5 to
15 knots. waves 1 to 3 feet. 
.tuesday...west winds 10 knots or less becoming southwest. waves
1 foot or less. 
.wednesday...southwest winds 5 to 10 knots. a chance of showers
wednesday night. waves 1 foot or less. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 221341
glfle 
expires:202608222015;;168119

open lake forecast for lake erie
national weather service cleveland oh
941 am edt sat aug 22 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 east through the area this evening. a 
trough averaging 29.80 will linger over the eastern great lakes 
sunday into monday. high pressure 30.00 inches will gradually
build into the region monday through tuesday.


lez165-166-222015-
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-
941 am edt sat aug 22 2026

.rest of today...southwest winds 10 to 15 knots. a slight chance
of showers late this morning, then a chance of showers and
thunderstorms early this afternoon. showers and thunderstorms
late. waves 1 to 2 feet. 
.tonight...southwest winds 10 to 15 knots becoming northwest
15 to 20 knots. showers and thunderstorms early, then a chance of
showers and thunderstorms. a slight chance of showers and
thunderstorms late. a chance of waterspouts after midnight. waves
2 to 4 feet. 
.sunday...northwest winds 15 to 20 knots becoming west. a chance
of waterspouts. showers likely with a chance of thunderstorms in
the afternoon. waves 3 to 5 feet. 
.sunday night...northwest winds 15 to 20 knots. a chance of
waterspouts. showers likely with a chance of thunderstorms in the
evening, then a chance of showers overnight. waves 3 to 5 feet. 
.monday...west winds 15 to 20 knots becoming northwest 10 to
15 knots. a chance of waterspouts during the day. waves 2 to
4 feet subsiding to 1 to 3 feet. 
.tuesday...northwest winds 10 knots or less becoming south. waves
1 foot or less. 
.wednesday...south winds 5 to 15 knots. a chance of showers
wednesday night. waves 2 feet or less. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 221341
glfle 
expires:202608222015;;168120

open lake forecast for lake erie
national weather service cleveland oh
941 am edt sat aug 22 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 east through the area this evening. a 
trough averaging 29.80 will linger over the eastern great lakes 
sunday into monday. high pressure 30.00 inches will gradually
build into the region monday through tuesday.


lez061-167>169-222015-
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-
941 am edt sat aug 22 2026

.rest of today...south winds 10 to 15 knots becoming southwest. a
chance of showers with a slight chance of thunderstorms late this
morning, then a chance of showers and thunderstorms early this
afternoon. showers and thunderstorms late. waves 2 feet or less. 
.tonight...southwest winds 10 to 15 knots becoming northwest
15 to 20 knots. showers and thunderstorms early, then showers
with a chance of thunderstorms. a chance of showers with a slight
chance of thunderstorms late. a chance of waterspouts after
midnight. waves 1 to 3 feet building to 3 to 5 feet. 
.sunday...northwest winds 15 to 25 knots becoming west. a chance
of waterspouts. a chance of showers in the morning, then showers
likely with a chance of thunderstorms in the afternoon. waves
3 to 6 feet. 
.sunday night...west winds 15 to 20 knots. a chance of
waterspouts. showers with a chance of thunderstorms in the
evening, then showers likely overnight. waves 3 to 6 feet. 
.monday...west winds 15 to 25 knots becoming northwest and
diminishing to 10 to 15 knots. a chance of waterspouts. a chance
of showers. waves 3 to 6 feet subsiding to 2 to 4 feet. 
.tuesday...northwest winds 5 to 10 knots becoming southwest.
waves 2 feet or less. 
.wednesday...south winds 5 to 15 knots. a chance of showers
wednesday night. waves 2 feet or less. 

winds and waves higher in and near thunderstorms.

$$

fzus63 kdtx 221342
glfsc 
expires:202608222145;;168122

lake st clair forecast
national weather service detroit/pontiac mi
942 am edt sat aug 22 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 will move across the great lakes this
morning which will veer wind direction to the northwest. showers
and thunderstorms are expected along and ahead of the front.
post-frontal northwest flow leads to gusty winds through the day
on sunday.


lcz460-222145-
lake st clair-
942 am edt sat aug 22 2026

.rest of today...southwest winds 5 to 10 knots. light showers likely
early in the afternoon. thunderstorms likely in the afternoon.
showers late in the afternoon. waves 2 feet or less.
.tonight...northwest winds 10 to 15 knots increasing to 15 to 20
knots in the late evening and overnight. mostly cloudy with showers
likely and a chance of thunderstorms early in the evening...then
partly cloudy in the late evening and overnight. waves 1 to 3 feet.
.sunday...northwest winds 15 to 20 knots. partly sunny. a chance of
light showers early in the afternoon. waves 1 to 3 feet.
.sunday night...northwest winds 15 to 20 knots. partly cloudy. waves
1 to 3 feet.
.monday...northwest winds 10 to 15 knots. mostly clear. waves 2 feet
or less.
.tuesday...southeast winds 5 to 10 knots. mostly clear. waves 2 feet
or less.
.wednesday...south winds 10 to 15 knots. partly cloudy. a chance of
showers. waves 2 feet or less.

$$

fzus63 kdtx 221340
glflh 
expires:202608222145;;168097

open lake forecast for lake huron
national weather service detroit/pontiac mi
940 am edt sat aug 22 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 will move across the great lakes this
morning which will veer wind direction to the northwest. showers
and thunderstorms are expected along and ahead of the front.
post-frontal northwest flow leads to gusty winds through the day
on sunday.


lhz462>464-222145-
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-
940 am edt sat aug 22 2026

.rest of today...south winds 5 to 10 knots. a chance of showers
late in the morning...then a chance of showers and thunderstorms
in the afternoon. a chance of waterspouts. waves 1 to 3 feet. 
.tonight...northwest winds 10 to 15 knots increasing to 15 to
20 knots after midnight. showers and a chance of thunderstorms in
the evening. a chance of waterspouts in the evening. waves 1 to
3 feet building to 6 to 9 feet. waves occasionally around
12 feet. 
.sunday...northwest winds 20 to 25 knots with gusts to around
30 knots. a chance of showers in the morning...then showers
likely in the afternoon. waves 8 to 12 feet. waves occasionally
around 15 feet. 
.sunday night...northwest winds 15 to 20 knots increasing to
20 to 25 knots by midnight...then becoming west 15 to 20 knots
after midnight. gusts to 30 knots. showers likely in the
evening...then a chance of showers after midnight. waves 8 to
12 feet. waves occasionally around 15 feet. 
.monday...northwest winds 15 to 20 knots with gusts to around
30 knots decreasing to 10 to 15 knots late in the afternoon.
waves 8 to 12 feet subsiding to 2 to 4 feet. waves occasionally
around 15 feet. 
.tuesday...northwest winds 5 to 10 knots early in the morning
becoming light and variable...then becoming south 5 to 10 knots
by midnight. waves 2 feet or less. 
.wednesday...southwest winds 5 to 10 knots becoming south 10 to
15 knots . a chance of showers early in the evening. rain showers
likely by midnight. waves 1 to 3 feet. 


$$

fzus63 kdtx 221340
glflh 
expires:202608222145;;168096

open lake forecast for lake huron
national weather service detroit/pontiac mi
940 am edt sat aug 22 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 will move across the great lakes this
morning which will veer wind direction to the northwest. showers
and thunderstorms are expected along and ahead of the front.
post-frontal northwest flow leads to gusty winds through the day
on sunday.


lhz362-363-222145-
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-
940 am edt sat aug 22 2026

.rest of today...southwest winds 5 to 10 knots. a chance of
showers late in the morning...then showers likely and a chance of
thunderstorms in the afternoon. waterspouts likely late in the
morning...then a chance of waterspouts in the afternoon. waves
1 to 3 feet. 
.tonight...northwest winds 10 to 15 knots increasing to 20 to
25 knots. waves 4 to 6 feet building to 6 to 9 feet after
midnight. waves occasionally around 12 feet. 
.sunday...northwest winds 20 to 25 knots with gusts to around
30 knots. a chance of waterspouts in the morning. a chance of
showers in the afternoon. waves 8 to 12 feet. waves occasionally
around 15 feet. 
.sunday night...northwest winds 20 to 25 knots with gusts to
around 30 knots. a chance of waterspouts in the evening. a chance
of showers. waves 8 to 12 feet. waves occasionally around
15 feet. 
.monday...northwest winds 20 to 25 knots with gusts to around
30 knots decreasing to 10 to 15 knots. waves 6 to 9 feet
subsiding to 3 to 5 feet late in the afternoon. waves
occasionally around 12 feet. 
.tuesday...northwest winds 5 to 10 knots early in the morning
becoming light and variable...then becoming south 5 to 10 knots
by midnight. waves 1 to 3 feet. 
.wednesday...south winds 5 to 10 knots increasing to 10 to
15 knots. showers likely. a chance of thunderstorms by midnight.
waves 1 to 3 feet. 


$$

fzus63 kdtx 221340
glflh 
expires:202608222145;;168095

open lake forecast for lake huron
national weather service detroit/pontiac mi
940 am edt sat aug 22 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 will move across the great lakes this
morning which will veer wind direction to the northwest. showers
and thunderstorms are expected along and ahead of the front.
post-frontal northwest flow leads to gusty winds through the day
on sunday.


lhz361-222145-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
940 am edt sat aug 22 2026

.rest of today...west winds 5 to 10 knots becoming northwest
10 to 15 knots in the afternoon. a chance of showers late in the
morning. a chance of waterspouts. waves 1 to 3 feet. 
.tonight...northwest winds 15 to 20 knots. gusts to 30 knots in
the evening. waves 3 to 5 feet. 
.sunday...northwest winds 15 to 20 knots increasing to 20 to
25 knots early in the afternoon. gusts to 30 knots. waves 5 to
7 feet. waves occasionally around 10 feet. 
.sunday night...northwest winds 20 to 25 knots with gusts to
around 30 knots. a chance of showers. waves 6 to 9 feet. waves
occasionally around 12 feet. 
.monday...northwest winds 15 to 20 knots with gusts to around
30 knots decreasing to 5 to 10 knots. waves 4 to 6 feet subsiding
to 2 to 4 feet late in the evening. waves occasionally around
8 feet. 
.tuesday...west winds 5 to 10 knots early in the morning becoming
light and variable...then becoming south 5 to 10 knots by
midnight. waves 2 feet or less. 
.wednesday...south winds 5 to 10 knots. a chance of showers early
in the morning...then showers likely. waves 1 to 3 feet. 


$$

fzus63 kmkx 221408
glflm 
expires:202608222115;;169063

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
908 am cdt sat aug 22 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...

29.8 inch low pressure is centered over the southern hudson bay 
this morning, resulting in generally northeast winds across the 
open waters of lake michigan. these winds will continue into this 
evening as a weak cold front moves across the lake and 30.2 inch 
high pressure builds into the northern great plains. isolated 
showers and thunderstorms are possible along the passing front 
this afternoon & evening. severe weather potential is low in this 
activity, though an isolated stronger storm with gusty winds or a 
waterspout can't be entirely ruled out. will be watching radar 
trends for any potential marine weather statements or special 
marine warnings through this evening. northwest winds will 
continue through the day sunday, ultimately weakening by sunday 
night as the aforementioned area of high pressure approaches lake 
michigan. 

light and variable winds will continue monday with high pressure 
lingering in the vicinity. the high will shift east into ontario by 
tuesday, resulting in a south-southwest wind shift across the 
waters. 29.7 inch low pressure will approach from the northern 
great plains tuesday night into wednesday, reinforcing the south- 
southwesterly wind pattern. the low will cross lake michigan 
during the second half of the day wednesday, bringing a northwest 
wind shift. gales are not expected as this occurs. showers and 
thunderstorms will accompany the approaching/passing surface low 
tuesday night into wednesday afternoon. it remains too early to 
tell if any of these storms could be severe, with trends being 
monitored into the beginning of next week. 


lmz261-362-364-366-563-565-567-868-222115-
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-
908 am cdt sat aug 22 2026

sheboygan wi to pentwater mi north...

.rest of today...northwest winds 10 to 20 kt increasing to 15 to
25 kt. slight chance of showers and thunderstorms this afternoon.
waves 2 to 4 ft. 
.tonight...north winds to 30 kt diminishing to 15 to 25 kt.
slight chance of showers and thunderstorms in the evening. waves
4 to 6 ft occasionally to 8 ft. 
.sunday...northwest winds 15 to 25 kt becoming north to 30 kt.
waves 4 to 7 ft occasionally to 9 ft. 
.sunday night...north winds to 30 kt becoming northwest 15 to
25 kt. waves 4 to 6 ft occasionally to 8 ft subsiding to 3 to
5 ft. 
.monday...northwest winds 15 to 25 kt becoming north. waves 2 to
4 ft. 
.monday night...west winds 10 to 20 kt becoming southwest 5 to
10 kt. waves 1 to 3 ft subsiding to 1 to 2 ft. 
.tuesday...southwest winds 10 to 20 kt increasing to 15 to 25 kt.
waves 1 to 2 ft building to 2 to 4 ft. 
.wednesday...southwest winds 15 to 25 kt increasing to 30 kt.
chance of showers. waves 3 to 5 ft.  

$$

fzus63 kmkx 221408
glflm 
expires:202608222115;;169064

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
908 am cdt sat aug 22 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...

29.8 inch low pressure is centered over the southern hudson bay 
this morning, resulting in generally northeast winds across the 
open waters of lake michigan. these winds will continue into this 
evening as a weak cold front moves across the lake and 30.2 inch 
high pressure builds into the northern great plains. isolated 
showers and thunderstorms are possible along the passing front 
this afternoon & evening. severe weather potential is low in this 
activity, though an isolated stronger storm with gusty winds or a 
waterspout can't be entirely ruled out. will be watching radar 
trends for any potential marine weather statements or special 
marine warnings through this evening. northwest winds will 
continue through the day sunday, ultimately weakening by sunday 
night as the aforementioned area of high pressure approaches lake 
michigan. 

light and variable winds will continue monday with high pressure 
lingering in the vicinity. the high will shift east into ontario by 
tuesday, resulting in a south-southwest wind shift across the 
waters. 29.7 inch low pressure will approach from the northern 
great plains tuesday night into wednesday, reinforcing the south- 
southwesterly wind pattern. the low will cross lake michigan 
during the second half of the day wednesday, bringing a northwest 
wind shift. gales are not expected as this occurs. showers and 
thunderstorms will accompany the approaching/passing surface low 
tuesday night into wednesday afternoon. it remains too early to 
tell if any of these storms could be severe, with trends being 
monitored into the beginning of next week. 


lmz080-669-671-673-675-777-779-870-872-874-876-878-222115-
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-
908 am cdt sat aug 22 2026

sheboygan wi to pentwater mi south...

.rest of today...northwest winds 10 to 20 kt. waves 4 to 6 ft
occasionally to 8 ft. 
.tonight...north winds 15 to 25 kt diminishing to 10 to 20 kt.
slight chance of showers and thunderstorms in the evening, then
slight chance of showers overnight. waves 4 to 6 ft occasionally
to 8 ft. 
.sunday...northwest winds 15 to 25 kt becoming north to 30 kt.
waves 4 to 7 ft occasionally to 9 ft. 
.sunday night...north winds 15 to 25 kt diminishing to 10 to
20 kt. waves 4 to 6 ft occasionally to 8 ft subsiding to 2 to
4 ft. 
.monday...northwest winds 10 to 20 kt becoming north. waves 2 to
4 ft. 
.monday night...east winds 10 to 15 kt veering to south. waves
1 to 3 ft. 
.tuesday...south winds 10 to 20 kt increasing to 15 to 25 kt.
waves 1 to 2 ft building to 1 to 3 ft. 
.wednesday...southwest winds 15 to 25 kt increasing to 30 kt.
chance of showers. waves 3 to 5 ft.  

$$

fzus63 kmqt 221401
glfls 
expires:202608222000;;168695

open lake forecast for lake superior
national weather service marquette mi
1000 am edt sat aug 22 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...

pressure rises continue over lake superior behind an exiting 29.9 
inch trough. this is followed by 30.1 inch ridging for the latter 
part of the weekend into early next week via a 30.2 inch parent high 
from the canadian prairies that drops down into the ohio river 
valley by late monday, weakening to 30.1 inches as it does so. a 
29.7 inch low over the canadian prairies monday night then drops 
southeast towards lake superior, arriving early wednesday morning. 
the low shifts east wednesday night with weak ridging of 29.9 inches 
building over the lake on thursday.




lsz266-222000-
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-
1000 am edt sat aug 22 2026

.rest of today...northwest winds 15 to 25 knots increasing to
20 to 30 knots in the afternoon. patchy fog by late morning.
sprinkles by late morning. waves 2 to 4 feet building to 3 to
6 feet occasionally to 8 feet. 
.tonight...northwest winds 20 to 30 knots veering north after
midnight. waves 3 to 6 feet occasionally to 8 feet. 
.sunday...north winds 20 to 30 knots increasing to 30 knots with
a few gale force gusts to 35 knots possible in the afternoon,
then backing northwest late. waves building to 4 to 8 feet
occasionally to 10 feet. 
.sunday night...northwest winds 20 to 30 knots becoming north
15 to 25 knots after midnight. waves subsiding to 2 to 4 feet. 
.monday...north winds 10 to 20 knots backing northwest by mid
afternoon. waves subsiding to calm to 2 feet. 
.monday night...northwest winds 5 to 15 knots backing west after
midnight. waves calm to 2 feet. 
.tuesday...south winds 10 to 20 knots. showers likely and a
chance of thunderstorms. waves building to 1 to 3 feet. 
.wednesday...west winds 10 to 20 knots veering northwest. showers
likely. waves subsiding to calm to 2 feet, then building to 1 to
3 feet. 

$$

fzus63 kmqt 221401
glfls 
expires:202608222000;;168696

open lake forecast for lake superior
national weather service marquette mi
1000 am edt sat aug 22 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...

pressure rises continue over lake superior behind an exiting 29.9 
inch trough. this is followed by 30.1 inch ridging for the latter 
part of the weekend into early next week via a 30.2 inch parent high 
from the canadian prairies that drops down into the ohio river 
valley by late monday, weakening to 30.1 inches as it does so. a 
29.7 inch low over the canadian prairies monday night then drops 
southeast towards lake superior, arriving early wednesday morning. 
the low shifts east wednesday night with weak ridging of 29.9 inches 
building over the lake on thursday.




lsz267-222000-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
1000 am edt sat aug 22 2026

.rest of today...northwest winds 10 to 20 knots increasing to
20 to 30 knots. patchy fog. a slight chance of showers. waves
calm to 2 feet building to 3 to 5 feet occasionally to 7 feet. 
.tonight...northwest winds 20 to 30 knots veering north after
midnight. a slight chance of showers after midnight. waves
building to 3 to 6 feet occasionally to 8 feet. 
.sunday...north winds 20 to 30 knots backing northwest in the
afternoon, then increasing to 30 knots with a few gale force
gusts to 35 knots possible late. a slight chance of showers.
waves building to 5 to 8 feet occasionally to 10 feet. 
.sunday night...northwest winds 20 to 30 knots veering north
after midnight. waves subsiding to 3 to 6 feet occasionally to
8 feet. 
.monday...northwest winds 15 to 25 knots. waves subsiding to 2 to
4 feet. 
.monday night...northwest winds 10 to 20 knots diminishing to
5 to 15 knots after midnight. waves subsiding to calm to 2 feet. 
.tuesday...southeast winds 5 to 15 knots veering south. showers
likely. waves building to 1 to 3 feet. 
.wednesday...south winds 10 to 20 knots veering west. showers
likely. a chance of thunderstorms. a chance of showers. waves
subsiding to calm to 2 feet. 

$$

fzus63 kmqt 221401
glfls 
expires:202608222000;;168691

open lake forecast for lake superior
national weather service marquette mi
1000 am edt sat aug 22 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...

pressure rises continue over lake superior behind an exiting 29.9 
inch trough. this is followed by 30.1 inch ridging for the latter 
part of the weekend into early next week via a 30.2 inch parent high 
from the canadian prairies that drops down into the ohio river 
valley by late monday, weakening to 30.1 inches as it does so. a 
29.7 inch low over the canadian prairies monday night then drops 
southeast towards lake superior, arriving early wednesday morning. 
the low shifts east wednesday night with weak ridging of 29.9 inches 
building over the lake on thursday.




lsz162-222000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1000 am edt sat aug 22 2026 /900 am cdt sat aug 22 2026/

.rest of today...northwest winds 10 to 20 knots. waves calm to
2 feet. 
.tonight...north winds 10 to 20 knots. waves calm to 2 feet. 
.sunday...north winds 5 to 15 knots veering south in the
afternoon. waves calm to 2 feet. 
.sunday night...west winds 5 to 15 knots becoming northwest less
than 10 knots after midnight. waves calm to 2 feet. 
.monday...north winds less than 10 knots becoming southeast 5 to
15 knots by mid afternoon. waves calm to 2 feet. 
.monday night...east winds 5 to 15 knots becoming southeast less
than 10 knots after midnight. waves calm to 2 feet. 
.tuesday...south winds 5 to 15 knots veering west. a chance of
showers and thunderstorms. waves calm to 2 feet. 
.wednesday...west winds 5 to 15 knots veering northwest. waves
calm to 2 feet. 

$$

fzus63 kmqt 221401
glfls 
expires:202608222000;;168693

open lake forecast for lake superior
national weather service marquette mi
1000 am edt sat aug 22 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...

pressure rises continue over lake superior behind an exiting 29.9 
inch trough. this is followed by 30.1 inch ridging for the latter 
part of the weekend into early next week via a 30.2 inch parent high 
from the canadian prairies that drops down into the ohio river 
valley by late monday, weakening to 30.1 inches as it does so. a 
29.7 inch low over the canadian prairies monday night then drops 
southeast towards lake superior, arriving early wednesday morning. 
the low shifts east wednesday night with weak ridging of 29.9 inches 
building over the lake on thursday.




lsz264-222000-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
1000 am edt sat aug 22 2026

.rest of today...northwest winds 10 to 20 knots. waves calm to
2 feet building to 1 to 3 feet, then subsiding to calm to 2 feet.
.tonight...north winds 10 to 20 knots increasing to 15 to
25 knots after midnight, then diminishing to 10 to 20 knots late.
waves building to 2 to 4 feet. 
.sunday...north winds 10 to 20 knots backing northwest late.
waves subsiding to calm to 2 feet. 
.sunday night...northwest winds 10 to 20 knots diminishing to
5 to 15 knots after midnight. waves calm to 2 feet. 
.monday...north winds 5 to 15 knots backing west by mid
afternoon. waves calm to 2 feet. 
.monday night...west winds 5 to 15 knots backing south after
midnight. waves calm to 2 feet. 
.tuesday...southeast winds 5 to 15 knots veering south. a chance
of thunderstorms. showers likely. waves calm to 2 feet. 
.wednesday...west winds 5 to 15 knots veering northwest. a chance
of showers. waves calm to 2 feet. 

$$

fzus63 kmqt 221401
glfls 
expires:202608222000;;168692

open lake forecast for lake superior
national weather service marquette mi
1000 am edt sat aug 22 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...

pressure rises continue over lake superior behind an exiting 29.9 
inch trough. this is followed by 30.1 inch ridging for the latter 
part of the weekend into early next week via a 30.2 inch parent high 
from the canadian prairies that drops down into the ohio river 
valley by late monday, weakening to 30.1 inches as it does so. a 
29.7 inch low over the canadian prairies monday night then drops 
southeast towards lake superior, arriving early wednesday morning. 
the low shifts east wednesday night with weak ridging of 29.9 inches 
building over the lake on thursday.




lsz263-222000-
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-
1000 am edt sat aug 22 2026

.rest of today...northwest winds 5 to 15 knots increasing to
10 to 20 knots in the afternoon, then diminishing to 5 to
15 knots late. waves calm to 2 feet. 
.tonight...north winds 10 to 20 knots. waves building to 2 to
4 feet. 
.sunday...north winds 10 to 20 knots becoming west 5 to 15 knots
late. waves subsiding to calm to 2 feet. 
.sunday night...west winds 5 to 15 knots veering northwest after
midnight. waves calm to 2 feet. 
.monday...north winds 5 to 15 knots backing southwest by mid
afternoon. waves calm to 2 feet. 
.monday night...southwest winds 5 to 15 knots backing south after
midnight. waves calm to 2 feet. 
.tuesday...south winds 5 to 15 knots veering southwest. a chance
of showers. a chance of thunderstorms. showers likely. waves calm
to 2 feet. 
.wednesday...west winds 10 to 20 knots becoming northwest 5 to
15 knots. a chance of showers. waves calm to 2 feet. 

$$

fzus63 kmqt 221401
glfls 
expires:202608222000;;168694

open lake forecast for lake superior
national weather service marquette mi
1000 am edt sat aug 22 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...

pressure rises continue over lake superior behind an exiting 29.9 
inch trough. this is followed by 30.1 inch ridging for the latter 
part of the weekend into early next week via a 30.2 inch parent high 
from the canadian prairies that drops down into the ohio river 
valley by late monday, weakening to 30.1 inches as it does so. a 
29.7 inch low over the canadian prairies monday night then drops 
southeast towards lake superior, arriving early wednesday morning. 
the low shifts east wednesday night with weak ridging of 29.9 inches 
building over the lake on thursday.




lsz265-222000-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
1000 am edt sat aug 22 2026

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

$$