fzus61 kbuf 292002
glflo 
expires:202608300300;;569338

open lake forecast for lake ontario
national weather service buffalo ny
402 pm edt sat aug 29 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 30.2 inches exits slowly 
toward new england through sunday before a weak cold front drifts 
southward across lake ontario sunday night. behind the front, a 
ridge averaging 30.1 inches builds from eastern canada through 
tuesday. that ridge should exit eastward tuesday night and allow a 
warm front to sweep northward across lake ontario. a cold front 
should sweep eastward across the lake late wednesday. behind the 
cold front, a trough averaging 29.9 inches should linger over lake 
ontario through thursday.


loz063>065-300300-
lake ontario open waters from hamlin beach to the saint lawrence
river-
402 pm edt sat aug 29 2026

.tonight...south winds 5 to 15 knots becoming southwest. waves
2 feet or less. 
.sunday...southwest winds 5 to 15 knots becoming west. a chance
of showers in the afternoon. waves 2 feet or less. 
.sunday night...west winds 10 knots or less becoming northwest. a
chance of showers. waves 2 feet or less. 
.monday...east winds less than 10 knots. a chance of showers in
the afternoon. waves 1 foot or less. 
.monday night...east winds 10 knots or less becoming south.
showers likely. waves 1 foot or less. 
.tuesday...south winds 5 to 10 knots. showers likely. waves
1 foot or less. 
.wednesday...south winds 5 to 10 knots becoming southwest.
showers likely with a chance of thunderstorms. waves 2 feet or
less. 
.thursday...west winds 5 to 10 knots becoming northwest. showers
likely during the day, then a chance of showers thursday night.
waves 1 to 2 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kbuf 292002
glflo 
expires:202608300300;;569337

open lake forecast for lake ontario
national weather service buffalo ny
402 pm edt sat aug 29 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 30.2 inches exits slowly 
toward new england through sunday before a weak cold front drifts 
southward across lake ontario sunday night. behind the front, a 
ridge averaging 30.1 inches builds from eastern canada through 
tuesday. that ridge should exit eastward tuesday night and allow a 
warm front to sweep northward across lake ontario. a cold front 
should sweep eastward across the lake late wednesday. behind the 
cold front, a trough averaging 29.9 inches should linger over lake 
ontario through thursday.


loz062-300300-
lake ontario open waters from the niagara river to hamlin beach-
402 pm edt sat aug 29 2026

.tonight...southwest winds 5 to 15 knots. waves 2 feet or less. 
.sunday...southwest winds 5 to 10 knots becoming west. showers
likely in the afternoon. waves 1 foot or less. 
.sunday night...southwest winds 10 knots or less becoming
southeast. showers. waves 1 foot or less. 
.monday...east winds 10 knots or less. a chance of showers in the
morning, then showers likely in the afternoon. waves 1 foot or
less. 
.monday night...east winds 5 to 10 knots becoming southeast.
showers likely. waves 1 foot or less. 
.tuesday...south winds 5 to 10 knots. showers likely. waves
1 foot or less. 
.wednesday...south winds 5 to 10 knots becoming southwest.
showers likely with a chance of thunderstorms. waves 1 foot or
less. 
.thursday...west winds 5 to 10 knots becoming northwest. showers
likely during the day, then a chance of showers thursday night.
waves 1 foot or less. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 291958
glfle 
expires:202608300215;;569099

open lake forecast for lake erie
national weather service cleveland oh
358 pm edt sat aug 29 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...
high pressure 30.20 inches overhead will build east into the mid-
atlantic through sunday evening with a warm front moving north
over lake erie late sunday night. low pressure 29.80 will move
into the northern great lakes early wednesday with a cold front
passing through early thursday.


lez162-163-300215-
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-
358 pm edt sat aug 29 2026

.tonight...south winds 5 to 10 knots becoming southwest. a slight
chance of showers after midnight. waves 1 foot or less. 
.sunday...southwest winds 5 to 10 knots becoming south. a slight
chance of showers. waves 1 foot or less. 
.sunday night...south winds 5 to 10 knots becoming southwest.
waves 1 foot or less. 
.monday...southwest winds 5 to 10 knots becoming south. waves
1 foot or less. 
.monday night...south winds around 10 knots becoming southwest.
waves 2 feet or less. 
.tuesday...southwest winds 5 to 10 knots. waves 2 feet or less. 
.wednesday...southwest winds 10 to 15 knots. a chance of showers
wednesday night. waves 1 foot or less. 
.thursday...west winds 5 to 10 knots becoming northeast. waves
1 foot or less. 

$$

fzus61 kcle 291958
glfle 
expires:202608300215;;569100

open lake forecast for lake erie
national weather service cleveland oh
358 pm edt sat aug 29 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...
high pressure 30.20 inches overhead will build east into the mid-
atlantic through sunday evening with a warm front moving north
over lake erie late sunday night. low pressure 29.80 will move
into the northern great lakes early wednesday with a cold front
passing through early thursday.


lez164>166-300215-
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-
358 pm edt sat aug 29 2026

.tonight...southeast winds 10 knots or less becoming south. a
slight chance of showers late. waves 1 foot or less. 
.sunday...southwest winds 5 to 10 knots becoming southeast. a
slight chance of showers. waves 1 to 2 feet. 
.sunday night...southeast winds 5 to 10 knots becoming southwest.
a chance of showers overnight. waves 1 foot or less. 
.monday...southwest winds 5 to 10 knots. a chance of showers in
the morning. waves 1 to 2 feet. 
.monday night...south winds 5 to 15 knots becoming southwest.
waves 1 to 3 feet. 
.tuesday...southwest winds 10 to 15 knots. waves 1 to 3 feet. 
.wednesday...southwest winds 5 to 15 knots. a chance of showers
wednesday night. waves 1 to 2 feet. 
.thursday...southwest winds 5 to 10 knots becoming northeast. a
chance of showers thursday night. waves 2 feet or less. 

$$

fzus61 kcle 291958
glfle 
expires:202608300215;;569101

open lake forecast for lake erie
national weather service cleveland oh
358 pm edt sat aug 29 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...
high pressure 30.20 inches overhead will build east into the mid-
atlantic through sunday evening with a warm front moving north
over lake erie late sunday night. low pressure 29.80 will move
into the northern great lakes early wednesday with a cold front
passing through early thursday.


lez061-167>169-300215-
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-
358 pm edt sat aug 29 2026

.tonight...south winds 10 knots or less. waves 1 foot or less. 
.sunday...southwest winds 5 to 10 knots becoming south. a slight
chance of showers early, then a chance of showers from late
morning on. waves 1 to 2 feet. 
.sunday night...southeast winds 5 to 10 knots becoming south. a
chance of showers. waves 1 foot or less. 
.monday...south winds 5 to 10 knots becoming southwest. a chance
of showers. waves 2 feet or less. 
.monday night...southwest winds 5 to 15 knots. a chance of
showers in the evening. waves 1 to 3 feet. 
.tuesday...southwest winds 10 to 15 knots. waves 1 to 3 feet. 
.wednesday...southwest winds 5 to 15 knots. a chance of showers
and thunderstorms wednesday night. waves 1 to 2 feet. 
.thursday...southwest winds 5 to 10 knots becoming north. waves
1 to 2 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus63 kdtx 291947
glfsc 
expires:202608300400;;568711

lake st clair forecast
national weather service detroit/pontiac mi
347 pm edt sat aug 29 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...the great lakes are located in between the exiting
high pressure system, 30.30 inches, centered over the mid
atlantic coast and low pressure, 29.70 inches, developing over
the dakotas. active pattern returns late sunday into monday as a
warm front lifts through the area bringing showers and storms.


lcz460-300400-
lake st clair-
347 pm edt sat aug 29 2026

.tonight...south winds 10 to 15 knots becoming southwest 5 to 10
knots after midnight. mostly cloudy. waves 2 feet or less.
.sunday...south winds 5 to 10 knots. mostly cloudy. a chance of
showers early in the morning...then light showers likely late in the
morning. a chance of light showers in the afternoon. waves 2 feet or
less.
.sunday night...south winds 5 to 10 knots. mostly cloudy. a chance
of light showers early in the evening. waves 2 feet or less.
.monday...south winds 5 to 10 knots. partly sunny. waves 2 feet or
less.
.monday night...southwest winds 10 to 15 knots. partly cloudy. waves
2 feet or less.
.tuesday...southwest winds 5 to 10 knots. partly cloudy. waves 2
feet or less.
.wednesday...southwest winds 10 to 15 knots. partly cloudy. a chance
of showers. waves 2 feet or less.
.thursday...northeast winds 10 to 15 knots. partly cloudy. a chance
of showers. waves 2 feet or less.

$$

fzus63 kdtx 291946
glflh 
expires:202608300400;;568686

open lake forecast for lake huron
national weather service detroit/pontiac mi
346 pm edt sat aug 29 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...the great lakes are located in between the exiting
high pressure system, 30.30 inches, centered over the mid
atlantic coast and low pressure, 29.70 inches, developing over
the dakotas. active pattern returns late sunday into monday as a
warm front lifts through the area bringing showers and storms.


lhz462>464-300400-
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-
346 pm edt sat aug 29 2026

.tonight...south winds 10 to 15 knots becoming southwest 5 to
10 knots by midnight...then veering to the west early in the
morning. a chance of showers after midnight. waves 1 to 3 feet. 
.sunday...south winds 5 to 10 knots increasing to 10 to 15 knots
early in the afternoon...then decreasing to 5 to 10 knots late in
the afternoon. showers. waves 2 feet or less. 
.sunday night...southeast winds 5 to 10 knots. showers likely in
the evening...then a chance of showers after midnight. waves
2 feet or less. 
.monday...southeast winds 5 to 10 knots. a chance of showers.
waves 2 feet or less. 
.monday night...south winds 5 to 10 knots veering to the
southwest after midnight. a chance of showers. waves 2 feet or
less. 
.tuesday...southwest winds 5 to 10 knots backing to the east late
in the afternoon...then veering to the southeast late in the
evening. a chance of showers in the morning. a chance of showers
and thunderstorms late in the afternoon. waves 2 feet or less. 
.wednesday...southwest winds 5 to 10 knots backing to the east
early in the evening...then backing to the east 5 to 10 knots by
midnight. a chance of showers. a chance of thunderstorms until
early evening. waves 2 feet or less. 
.thursday...northwest winds 5 to 10 knots. a chance of showers
early in the morning. waves 2 feet or less. 


$$

fzus63 kdtx 291946
glflh 
expires:202608300400;;568685

open lake forecast for lake huron
national weather service detroit/pontiac mi
346 pm edt sat aug 29 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...the great lakes are located in between the exiting
high pressure system, 30.30 inches, centered over the mid
atlantic coast and low pressure, 29.70 inches, developing over
the dakotas. active pattern returns late sunday into monday as a
warm front lifts through the area bringing showers and storms.


lhz362-363-300400-
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-
346 pm edt sat aug 29 2026

.tonight...southwest winds 5 to 10 knots. a chance of showers.
waves 2 to 4 feet subsiding to 1 to 3 feet in the late evening
and overnight. 
.sunday...south winds 5 to 10 knots. showers likely and a chance
of thunderstorms in the morning...then showers likely in the
afternoon. waves 2 feet or less. 
.sunday night...east winds 5 to 10 knots. a chance of showers.
waves 2 feet or less. 
.monday...southeast winds 5 to 10 knots. a chance of showers in
the morning...then showers likely in the afternoon. waves 2 feet
or less. 
.monday night...southeast winds 5 to 10 knots veering to the
south after midnight. a chance of showers. waves 2 feet or less. 
.tuesday...southwest winds 5 to 10 knots in the morning becoming
light and variable...then becoming east 5 to 10 knots late in the
afternoon veering to the south. a chance of thunderstorms late in
the afternoon. a chance of showers late in the afternoon. waves
2 feet or less. 
.wednesday...southwest winds 5 to 10 knots veering to the north .
a chance of showers. waves 2 feet or less. 
.thursday...northwest winds 5 to 10 knots. a chance of showers
early in the morning. waves 2 feet or less. 


$$

fzus63 kdtx 291946
glflh 
expires:202608300400;;568684

open lake forecast for lake huron
national weather service detroit/pontiac mi
346 pm edt sat aug 29 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...the great lakes are located in between the exiting
high pressure system, 30.30 inches, centered over the mid
atlantic coast and low pressure, 29.70 inches, developing over
the dakotas. active pattern returns late sunday into monday as a
warm front lifts through the area bringing showers and storms.


lhz361-300400-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
346 pm edt sat aug 29 2026

.tonight...southwest winds 5 to 10 knots. a chance of showers in
the evening...then showers likely after midnight. waves 2 feet or
less. 
.sunday...southeast winds 5 to 10 knots. a chance of showers.
waves 2 feet or less. 
.sunday night...east winds 5 to 10 knots. waves 2 feet or less. 
.monday...east winds 10 to 15 knots. a chance of showers in the
morning...then showers and a chance of thunderstorms in the
afternoon. waves 1 to 3 feet. 
.monday night...southeast winds 5 to 10 knots. a chance of
showers. waves 1 to 3 feet. 
.tuesday...west winds 5 to 10 knots in the morning becoming light
and variable...then becoming southeast 5 to 10 knots late in the
evening. a chance of showers late in the afternoon. waves 2 feet
or less. 
.wednesday...southwest winds 5 to 10 knots veering to the
northwest by midnight. a chance of showers. waves 2 feet or less.
.thursday...northwest winds 5 to 10 knots until afternoon
becoming light and variable. waves 2 feet or less. 


$$

fzus63 kmkx 291952
glflm 
expires:202608300330;;568848

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
252 pm cdt sat aug 29 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...

high pressure around 30.2 inches will continue to move  east of 
the lower great lakes into this evening, while low pressure 
deepens to around 29.6 inches in the central great plains tonight.
this will support modest to breezy southerly winds this afternoon
through this evening. tonight a warm front is expected to lift
northward over the lake, and the presence of a jet aloft may cause
some gusty southerly winds to 30 knots over the south half of the
lake on sunday. 

breezy southerlies then remain into monday as the low will lift
northeast from the plains toward western lake superior. scattered
thunderstorms will occur at times from tonight into next week. a 
weak cold front will finally arrive late tuesday night and 
wednesday with light northerly winds eventually taking hold.


lmz080-669-671-673-675-777-779-870-872-874-876-878-300330-
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-
252 pm cdt sat aug 29 2026

sheboygan wi to pentwater mi south...

.tonight...south winds 10 to 20 kt increasing to 15 to 25 kt.
slight chance of showers this evening, then chance of showers and
slight chance of thunderstorms overnight. waves 3 to 5 ft. 
.sunday...south winds to 30 kt diminishing to 15 to 25 kt. chance
of showers and slight chance of thunderstorms in the morning,
then slight chance of showers and thunderstorms in the afternoon.
waves 4 to 6 ft occasionally to 8 ft. 
.sunday night...south winds 15 to 25 kt diminishing to 10 to
20 kt. waves 3 to 5 ft subsiding to 2 to 4 ft. 
.monday...south winds 10 to 20 kt increasing to 15 to 25 kt.
chance of showers in the morning. waves 3 to 5 ft. 
.monday night...southwest winds 10 to 20 kt diminishing to 10 to
15 kt. waves 3 to 5 ft subsiding to 2 to 4 ft. 
.tuesday...southwest winds 10 to 15 kt becoming south. waves 1 to
3 ft. 
.tuesday night...south winds 10 to 15 kt becoming southwest.
waves 1 to 2 ft. 
.wednesday...southwest winds 10 to 15 kt becoming south 10 to
20 kt. waves 1 to 2 ft. 
.thursday...north winds 10 to 15 kt increasing to 10 to 20 kt.
waves 1 to 3 ft.  

$$

fzus63 kmkx 291952
glflm 
expires:202608300330;;568847

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
252 pm cdt sat aug 29 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...

high pressure around 30.2 inches will continue to move  east of 
the lower great lakes into this evening, while low pressure 
deepens to around 29.6 inches in the central great plains tonight.
this will support modest to breezy southerly winds this afternoon
through this evening. tonight a warm front is expected to lift
northward over the lake, and the presence of a jet aloft may cause
some gusty southerly winds to 30 knots over the south half of the
lake on sunday. 

breezy southerlies then remain into monday as the low will lift
northeast from the plains toward western lake superior. scattered
thunderstorms will occur at times from tonight into next week. a 
weak cold front will finally arrive late tuesday night and 
wednesday with light northerly winds eventually taking hold.


lmz261-362-364-366-563-565-567-868-300330-
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-
252 pm cdt sat aug 29 2026

sheboygan wi to pentwater mi north...

.tonight...southwest winds 15 to 25 kt becoming south. chance of
showers and slight chance of thunderstorms this evening, then
showers likely overnight. waves 3 to 5 ft. 
.sunday...south winds 10 to 20 kt becoming southeast. patchy fog
in the morning. chance of showers in the morning, then chance of
showers and slight chance of thunderstorms in the afternoon.
waves 4 to 6 ft occasionally to 8 ft. 
.sunday night...east winds 10 to 15 kt becoming southeast 10 to
20 kt. chance of showers in the evening. waves 3 to 5 ft
subsiding to 2 to 4 ft. 
.monday...southeast winds 10 to 20 kt becoming south 15 to 25 kt.
chance of showers. waves 3 to 5 ft. 
.monday night...south winds 15 to 25 kt becoming west 10 to 15 kt
overnight. chance of showers overnight. waves 3 to 5 ft subsiding
to 2 to 4 ft. 
.tuesday...south winds 10 to 15 kt increasing to 10 to 20 kt.
waves 1 to 3 ft. 
.tuesday night...south winds 10 to 15 kt becoming southwest 5 to
10 kt. chance of showers. waves 1 to 2 ft. 
.wednesday...southwest winds 10 to 15 kt veering to north. waves
1 to 2 ft. 
.thursday...north winds 10 to 15 kt increasing to 10 to 20 kt.
waves 1 to 2 ft.  

$$

fzus63 kmqt 292001
glfls 
expires:202608300800;;569257

open lake forecast for lake superior
national weather service marquette mi
401 pm edt sat aug 29 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 low develops over the central and northern plains 
tonight before lifting north into the canadian prairies early next 
week. the new 29.4 inch low over the canadian prairies on monday is 
projected to bring 29.8 inch troughing over lake superior by late 
monday. weak high pressure ridging of 29.9 inches looks to make a 
quick return on tuesday before being replaced by weak 29.8 inch 
troughing tuesday night and wednesday morning. 




lsz162-300800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
401 pm edt sat aug 29 2026 /301 pm cdt sat aug 29 2026/

.late this afternoon...east winds 5 to 15 knots. a slight chance
of showers. waves calm to 2 feet. 
.tonight...east winds 5 to 15 knots backing northeast after
midnight. patchy fog after midnight. waves calm to 2 feet. 
.sunday...northeast winds 10 to 20 knots increasing to 20 to
30 knots. patchy fog. waves building to 2 to 4 feet. 
.sunday night...northeast winds 20 to 30 knots becoming east
15 to 25 knots after midnight. a slight chance of showers through
midnight. a slight chance of thunderstorms. showers likely after
midnight. waves subsiding to 1 to 3 feet. 
.monday...east winds 10 to 20 knots becoming north 5 to 15 knots
by mid afternoon. a chance of showers and a slight chance of
thunderstorms through early afternoon. waves subsiding to calm to
2 feet. 
.monday night...west winds 5 to 15 knots backing southwest after
midnight. waves calm to 2 feet. 
.tuesday...southwest winds 10 to 20 knots. waves calm to 2 feet. 
.tuesday night...west winds 5 to 15 knots veering northwest after
midnight. waves calm to 2 feet. 
.wednesday...northwest winds 5 to 15 knots veering northeast.
waves calm to 2 feet. 
.thursday...east winds 15 to 25 knots becoming northeast 10 to
20 knots. waves calm to 2 feet. 

$$

fzus63 kmqt 292001
glfls 
expires:202608300800;;569258

open lake forecast for lake superior
national weather service marquette mi
401 pm edt sat aug 29 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 low develops over the central and northern plains 
tonight before lifting north into the canadian prairies early next 
week. the new 29.4 inch low over the canadian prairies on monday is 
projected to bring 29.8 inch troughing over lake superior by late 
monday. weak high pressure ridging of 29.9 inches looks to make a 
quick return on tuesday before being replaced by weak 29.8 inch 
troughing tuesday night and wednesday morning. 




lsz263-300800-
lake superior from saxon harbor wi to upper entrance to portage
canal mi 5nm off shore to the us/canadian border including isle
royale national park-
401 pm edt sat aug 29 2026

.late this afternoon...southeast winds 5 to 15 knots. a slight
chance of showers. waves calm to 2 feet. 
.tonight...southeast winds 5 to 15 knots backing east late.
patchy fog after midnight. waves calm to 2 feet. 
.sunday...east winds 5 to 15 knots becoming northeast 15 to
25 knots in the afternoon. patchy fog. waves building to 2 to
4 feet. 
.sunday night...east winds 15 to 25 knots diminishing to 10 to
20 knots after midnight. a chance of showers. a slight chance of
thunderstorms after midnight. waves subsiding to 1 to 3 feet. 
.monday...east winds 10 to 20 knots becoming northwest 5 to
15 knots by mid afternoon. a chance of showers and a slight
chance of thunderstorms. waves building to 2 to 4 feet, then
subsiding to 1 to 3 feet. 
.monday night...west winds 5 to 15 knots backing southwest after
midnight. waves subsiding to calm to 2 feet. 
.tuesday...southwest winds 10 to 20 knots increasing to 15 to
25 knots by mid afternoon. waves building to 1 to 3 feet, then
subsiding to calm to 2 feet. 
.tuesday night...west winds 5 to 15 knots. waves calm to 2 feet. 
.wednesday...northwest winds 5 to 15 knots veering north. waves
calm to 2 feet. 
.thursday...northeast winds 10 to 20 knots veering east. waves
calm to 2 feet. 

$$

fzus63 kmqt 292001
glfls 
expires:202608300800;;569259

open lake forecast for lake superior
national weather service marquette mi
401 pm edt sat aug 29 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 low develops over the central and northern plains 
tonight before lifting north into the canadian prairies early next 
week. the new 29.4 inch low over the canadian prairies on monday is 
projected to bring 29.8 inch troughing over lake superior by late 
monday. weak high pressure ridging of 29.9 inches looks to make a 
quick return on tuesday before being replaced by weak 29.8 inch 
troughing tuesday night and wednesday morning. 




lsz264-300800-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
401 pm edt sat aug 29 2026

.late this afternoon...southeast winds 5 to 15 knots. waves calm
to 2 feet. 
.tonight...southeast winds less than 10 knots becoming east 5 to
15 knots late. patchy fog after midnight. waves calm to 2 feet. 
.sunday...east winds 5 to 15 knots. patchy fog. waves calm to
2 feet. 
.sunday night...east winds 5 to 15 knots increasing to 10 to
20 knots late. a chance of showers and a slight chance of
thunderstorms after midnight. waves building to 1 to 3 feet. 
.monday...southeast winds 15 to 25 knots diminishing to 10 to
20 knots by mid afternoon. showers likely through early
afternoon. a chance of thunderstorms. a chance of showers by mid
afternoon. waves building to 2 to 4 feet. 
.monday night...west winds 5 to 15 knots. waves subsiding to calm
to 2 feet. 
.tuesday...southwest winds 10 to 20 knots. waves calm to 2 feet. 
.tuesday night...southwest winds 5 to 15 knots veering west after
midnight. waves calm to 2 feet. 
.wednesday...northwest winds less than 10 knots veering north.
waves calm to 2 feet. 
.thursday...northeast winds 5 to 15 knots veering east. waves
calm to 2 feet. 

$$

fzus63 kmqt 292001
glfls 
expires:202608300800;;569260

open lake forecast for lake superior
national weather service marquette mi
401 pm edt sat aug 29 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 low develops over the central and northern plains 
tonight before lifting north into the canadian prairies early next 
week. the new 29.4 inch low over the canadian prairies on monday is 
projected to bring 29.8 inch troughing over lake superior by late 
monday. weak high pressure ridging of 29.9 inches looks to make a 
quick return on tuesday before being replaced by weak 29.8 inch 
troughing tuesday night and wednesday morning. 




lsz265-300800-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
401 pm edt sat aug 29 2026

.late this afternoon...southeast winds 10 to 20 knots. a chance
of showers and a slight chance of thunderstorms. waves calm to
2 feet. 
.tonight...south winds 10 to 20 knots diminishing to 5 to
15 knots after midnight, then backing southeast late. a slight
chance of showers and thunderstorms through midnight. patchy fog
after midnight. waves calm to 2 feet. 
.sunday...east winds 10 to 20 knots increasing to 15 to 25 knots
late. patchy fog. waves building to 1 to 3 feet. 
.sunday night...east winds 15 to 25 knots veering southeast late.
a chance of showers and a slight chance of thunderstorms after
midnight. waves subsiding to calm to 2 feet, then building to
1 to 3 feet. 
.monday...southeast winds 15 to 25 knots diminishing to 10 to
20 knots by mid afternoon. showers likely through early
afternoon. a slight chance of thunderstorms. a chance of showers
by mid afternoon. waves building to 2 to 4 feet, then subsiding
to 1 to 3 feet. 
.monday night...south winds 10 to 20 knots veering west after
midnight. waves subsiding to calm to 2 feet. 
.tuesday...southwest winds 10 to 20 knots backing southeast by
mid afternoon. waves calm to 2 feet. 
.tuesday night...southwest winds 10 to 20 knots veering west
after midnight. waves calm to 2 feet. 
.wednesday...north winds 10 to 20 knots becoming northwest 5 to
15 knots. waves calm to 2 feet. 
.thursday...north winds 10 to 20 knots veering southeast. waves
calm to 2 feet. 

$$

fzus63 kmqt 292001
glfls 
expires:202608300800;;569261

open lake forecast for lake superior
national weather service marquette mi
401 pm edt sat aug 29 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 low develops over the central and northern plains 
tonight before lifting north into the canadian prairies early next 
week. the new 29.4 inch low over the canadian prairies on monday is 
projected to bring 29.8 inch troughing over lake superior by late 
monday. weak high pressure ridging of 29.9 inches looks to make a 
quick return on tuesday before being replaced by weak 29.8 inch 
troughing tuesday night and wednesday morning. 




lsz266-300800-
lake superior east of a line from manitou island to marquette mi
and west of a line from grand marais mi to the us/canadian border
beyond 5nm from shore-
401 pm edt sat aug 29 2026

.late this afternoon...southeast winds 5 to 15 knots. patchy fog.
a slight chance of showers and thunderstorms. waves calm to
2 feet. 
.tonight...south winds 10 to 20 knots diminishing to 5 to
15 knots after midnight, then backing southeast late. a slight
chance of showers and thunderstorms through midnight. patchy fog.
waves calm to 2 feet. 
.sunday...east winds 10 to 20 knots. patchy fog. waves calm to
2 feet. 
.sunday night...east winds 10 to 20 knots. a chance of showers
after midnight. waves building to 1 to 3 feet. 
.monday...southeast winds 15 to 25 knots diminishing to 10 to
20 knots by mid afternoon. showers likely and a slight chance of
thunderstorms. waves building to 2 to 4 feet. 
.monday night...south winds 10 to 20 knots becoming west 5 to
15 knots after midnight. waves subsiding to calm to 2 feet. 
.tuesday...southwest winds 5 to 15 knots backing south by mid
afternoon. waves calm to 2 feet. 
.tuesday night...south winds 10 to 20 knots veering west after
midnight. waves calm to 2 feet. 
.wednesday...northwest winds 5 to 15 knots. waves calm to 2 feet.
.thursday...north winds 5 to 15 knots veering east. waves calm to
2 feet. 

$$

fzus63 kmqt 292001
glfls 
expires:202608300800;;569262

open lake forecast for lake superior
national weather service marquette mi
401 pm edt sat aug 29 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 low develops over the central and northern plains 
tonight before lifting north into the canadian prairies early next 
week. the new 29.4 inch low over the canadian prairies on monday is 
projected to bring 29.8 inch troughing over lake superior by late 
monday. weak high pressure ridging of 29.9 inches looks to make a 
quick return on tuesday before being replaced by weak 29.8 inch 
troughing tuesday night and wednesday morning. 




lsz267-300800-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
401 pm edt sat aug 29 2026

.late this afternoon...east winds 5 to 15 knots. patchy fog.
waves calm to 2 feet. 
.tonight...south winds 5 to 15 knots increasing to 10 to 20 knots
after midnight, then becoming southeast 5 to 15 knots late. a
slight chance of showers and thunderstorms through midnight.
patchy fog after midnight. waves calm to 2 feet. 
.sunday...east winds 10 to 20 knots diminishing to 5 to 15 knots
in the afternoon. patchy fog through early afternoon. waves calm
to 2 feet. 
.sunday night...east winds 10 to 20 knots increasing to 15 to
25 knots late. a chance of showers after midnight. waves building
to 1 to 3 feet. 
.monday...southeast winds 15 to 25 knots. showers and a chance of
thunderstorms. waves building to 2 to 4 feet, then subsiding to
1 to 3 feet. 
.monday night...southeast winds 10 to 20 knots becoming southwest
5 to 15 knots after midnight. a chance of showers. waves
subsiding to calm to 2 feet. 
.tuesday...southwest winds 5 to 15 knots backing southeast by mid
afternoon. waves calm to 2 feet. 
.tuesday night...south winds 5 to 15 knots becoming southwest
10 to 20 knots after midnight. waves calm to 2 feet. 
.wednesday...west winds 5 to 15 knots veering northwest. waves
calm to 2 feet. 
.thursday...north winds 5 to 15 knots veering northeast. waves
calm to 2 feet. 

$$