fzus61 kbuf 292003
glflo 
expires:202609300300;;263721

open lake forecast for lake ontario
national weather service buffalo ny
403 pm edt tue sep 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 29.9 inch low along the southern shores maine, will 
dissipate over the north atlantic wednesday as a 30.1 inch high 
builds to just off the mid atlantic coast. a cold front over the 
upper great lakes wednesday night will cross the lower great lakes 
thursday night. a 30.4 inch high is then forecast to build into the 
upper great lakes friday and the lower great lakes by saturday, 
before exiting into northern maine sunday. meanwhile, a cold front 
will then cross the eastern great lakes sunday into monday.


loz062-300300-
lake ontario open waters from the niagara river to hamlin beach-
403 pm edt tue sep 29 2026

.tonight...southeast winds 5 to 10 knots becoming south. waves
1 foot or less. 
.wednesday...southwest winds 10 knots or less becoming south.
waves 1 foot or less. 
.wednesday night...south winds 5 to 15 knots becoming southwest.
a chance of showers overnight. waves 2 feet or less. 
.thursday...southwest winds 10 to 15 knots increasing to 15 to
20 knots. a chance of showers. waves 1 to 3 feet building to 2 to
4 feet. 
.thursday night...southwest winds 5 to 15 knots becoming west. a
chance of showers in the evening, then showers overnight. waves
2 to 4 feet subsiding to 1 to 3 feet. 
.friday...northwest winds 5 to 15 knots becoming north. showers
during the day, then a chance of showers friday night. waves 1 to
3 feet. 
.saturday...north winds 5 to 15 knots becoming southeast. waves
2 feet or less. 
.sunday...south winds 5 to 15 knots becoming northwest 15 to
20 knots. waves 2 feet or less building to 2 to 4 feet. 

$$

fzus61 kbuf 292003
glflo 
expires:202609300300;;263722

open lake forecast for lake ontario
national weather service buffalo ny
403 pm edt tue sep 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 29.9 inch low along the southern shores maine, will 
dissipate over the north atlantic wednesday as a 30.1 inch high 
builds to just off the mid atlantic coast. a cold front over the 
upper great lakes wednesday night will cross the lower great lakes 
thursday night. a 30.4 inch high is then forecast to build into the 
upper great lakes friday and the lower great lakes by saturday, 
before exiting into northern maine sunday. meanwhile, a cold front 
will then cross the eastern great lakes sunday into monday.


loz063>065-300300-
lake ontario open waters from hamlin beach to the saint lawrence
river-
403 pm edt tue sep 29 2026

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

$$

fzus61 kcle 292000
glfle 
expires:202609300215;;263441

open lake forecast for lake erie
national weather service cleveland oh
400 pm edt tue sep 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 will become centered over the mid
atlantic through thursday. a warm front will cross the lake
wednesday night, followed by a cold front thursday night into
early friday. high pressure 30.20 inches returns on saturday.


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-
400 pm edt tue sep 29 2026

.tonight...southeast winds 5 to 15 knots becoming south. waves
2 feet or less. 
.wednesday...south winds 5 to 15 knots. waves 2 feet or less. 
.wednesday night...south winds 5 to 10 knots becoming southwest.
a chance of showers. waves 2 feet or less. 
.thursday...southwest winds around 10 knots. a chance of showers.
waves 1 to 2 feet. 
.thursday night...southwest winds 5 to 15 knots becoming
northwest. a chance of showers in the evening, then showers
overnight. waves 1 foot or less. 
.friday...north winds 10 to 15 knots becoming northeast. showers
during the day. waves 1 to 3 feet building to 2 to 4 feet. 
.saturday...northeast winds 5 to 15 knots. waves 2 to 4 feet
subsiding to 1 to 3 feet. 
.sunday...northwest winds 5 to 10 knots becoming north and
increasing to 15 to 20 knots. waves 1 to 3 feet. 

$$

fzus61 kcle 292000
glfle 
expires:202609300215;;263442

open lake forecast for lake erie
national weather service cleveland oh
400 pm edt tue sep 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 will become centered over the mid
atlantic through thursday. a warm front will cross the lake
wednesday night, followed by a cold front thursday night into
early friday. high pressure 30.20 inches returns on saturday.


lez164>167-300215-
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-willowick to geneva-on-the-
lake oh beyond 5nm off shoreline to us-canadian border-
400 pm edt tue sep 29 2026

.tonight...southeast winds 10 knots or less becoming south 10 to
15 knots. waves 2 feet or less. 
.wednesday...south winds 5 to 15 knots becoming southwest. waves
1 to 3 feet. 
.wednesday night...south winds 5 to 15 knots. a chance of showers
overnight. waves 1 to 3 feet. 
.thursday...southwest winds 10 to 15 knots. a chance of showers
in the morning. waves 1 to 3 feet. 
.thursday night...southwest winds 5 to 15 knots becoming west. a
chance of showers in the evening, then showers likely overnight.
waves 2 feet or less. 
.friday...northwest winds 15 to 20 knots becoming northeast.
showers during the day. waves 1 to 3 feet building to 2 to
4 feet. 
.saturday...northeast winds 15 to 20 knots becoming east 5 to
15 knots. waves 2 to 4 feet subsiding to 1 to 3 feet. 
.sunday...west winds 5 to 15 knots becoming northwest 15 to
20 knots. waves 1 to 3 feet building to 3 to 5 feet. 

$$

fzus61 kcle 292000
glfle 
expires:202609300215;;263443

open lake forecast for lake erie
national weather service cleveland oh
400 pm edt tue sep 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 will become centered over the mid
atlantic through thursday. a warm front will cross the lake
wednesday night, followed by a cold front thursday night into
early friday. high pressure 30.20 inches returns on saturday.


lez061-168-169-300215-
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-
400 pm edt tue sep 29 2026

.tonight...southwest winds 10 knots or less becoming south. waves
2 feet or less. 
.wednesday...south winds 5 to 15 knots becoming southwest. waves
2 feet or less. 
.wednesday night...south winds 5 to 15 knots. a chance of showers
overnight. waves 1 to 3 feet. 
.thursday...south winds 10 to 15 knots becoming southwest. a
chance of showers in the morning. waves 1 to 3 feet. 
.thursday night...southwest winds 5 to 15 knots. a chance of
showers in the evening, then showers likely overnight. waves 1 to
3 feet. 
.friday...northwest winds 10 to 15 knots becoming north 15 to
20 knots. showers during the day. waves 1 to 3 feet. 
.saturday...northeast winds 5 to 15 knots becoming east. waves
1 to 3 feet. 
.sunday...south winds 5 to 15 knots becoming northwest 15 to
20 knots. waves 1 to 3 feet building to 2 to 4 feet. 

$$

fzus63 kdtx 291944
glfsc 
expires:202609300345;;262952

lake st clair forecast
national weather service detroit/pontiac mi
344 pm edt tue sep 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...high pressure, 30.10 inches, exits east of the central
great lakes this evening. southwest winds then slowly increase
through tomorrow, ahead of a cold front. this front looks to get
hung up over southern lower michigan, leading to occasional
showers in the wednesday to friday timeframe.


lcz460-300345-
lake st clair-
344 pm edt tue sep 29 2026

.tonight...south winds 5 to 10 knots. mostly clear this evening
becoming mostly cloudy. waves 2 feet or less.
.wednesday...southwest winds 5 to 10 knots increasing to 10 to 15
knots late in the morning...then becoming south 5 to 10 knots in the
afternoon. mostly cloudy. a chance of light rain late in the
afternoon. waves 2 feet or less.
.wednesday night...south winds 10 to 15 knots. cloudy with a chance
of light rain. waves 2 feet or less.
.thursday...southwest winds 10 to 15 knots diminishing to 5 to 10
knots in the late morning and afternoon. mostly cloudy. light rain
likely until late afternoon...then a chance of light rain early in
the afternoon. waves 2 feet or less.
.thursday night...southwest winds 5 to 10 knots becoming north 10 to
15 knots after midnight. a chance of light rain early in the
evening...then light rain likely by midnight. rain after midnight.
waves 2 feet or less.
.friday...north winds 10 to 15 knots. cloudy with rain in the
morning...then partly cloudy in the afternoon and evening. waves 2
feet or less.
.saturday...east winds 10 to 15 knots. mostly clear. waves 2 feet or
less.
.sunday...northwest winds 10 to 15 knots. mostly clear. waves 2 feet
or less.

$$

fzus63 kdtx 291944
glflh 
expires:202609300345;;262948

open lake forecast for lake huron
national weather service detroit/pontiac mi
344 pm edt tue sep 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...high pressure, 30.10 inches, exits east of the central
great lakes this evening. southwest winds then slowly increase
through tomorrow, ahead of a cold front. this front looks to get
hung up over southern lower michigan, leading to occasional
showers in the wednesday to friday timeframe.


lhz361-300345-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
344 pm edt tue sep 29 2026

.tonight...southeast winds 5 to 10 knots becoming south 10 to
15 knots late in the evening. waves 1 to 3 feet. 
.wednesday...southwest winds 10 to 15 knots becoming south. a 
chance of rain. waves 1 to 3 feet. 
.wednesday night...south winds 5 to 10 knots. a chance of rain in
the evening. waves 1 to 3 feet. 
.thursday...southwest winds 5 to 10 knots becoming west 10 to
15 knots early in the afternoon. a chance of rain in the
afternoon. waves 1 to 3 feet. 
.thursday night...northwest winds 10 to 15 knots decreasing to
5 to 10 knots in the late evening and overnight. waves 1 to
3 feet. 
.friday...northwest winds 10 to 15 knots increasing to 15 to
20 knots with gusts to around 30 knots late in the afternoon...
then decreasing to 10 to 15 knots late in the evening. waves
2 feet or less building to 2 to 4 feet late in the afternoon...
then subsiding to 1 to 3 feet late in the evening. 
.saturday...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. 
.sunday...southwest winds 5 to 10 knots increasing to 10 to
15 knots in the late morning and early afternoon...then becoming
northwest 15 to 20 knots with gusts to around 30 knots . a chance
of rain in the late morning and early afternoon. waves 1 to
3 feet building to 3 to 5 feet . 


$$

fzus63 kdtx 291944
glflh 
expires:202609300345;;262949

open lake forecast for lake huron
national weather service detroit/pontiac mi
344 pm edt tue sep 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...high pressure, 30.10 inches, exits east of the central
great lakes this evening. southwest winds then slowly increase
through tomorrow, ahead of a cold front. this front looks to get
hung up over southern lower michigan, leading to occasional
showers in the wednesday to friday timeframe.


lhz362-363-300345-
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-
344 pm edt tue sep 29 2026

.tonight...south winds 10 to 15 knots. waves 1 to 3 feet. 
.wednesday...southwest winds 10 to 15 knots becoming south 15 to
20 knots with gusts to around 30 knots in the afternoon. rain
likely. waves 1 to 3 feet building to 3 to 5 feet in the
afternoon. 
.wednesday night...south winds 15 to 25 knots becoming southwest 
10 to 15 knots after midnight. a chance of rain. waves 3 to 5 
feet. 
.thursday...southwest winds 5 to 10 knots. a chance of rain.
waves 3 to 5 feet. 
.thursday night...northwest winds 10 to 15 knots. a chance of
rain. waves 2 to 4 feet. 
.friday...northwest winds 10 to 15 knots increasing to 15 to
20 knots late in the morning...then increasing to 20 to 25 knots
with gusts to around 30 knots late in the afternoon decreasing to
15 to 20 knots late in the evening. a chance of rain in the
morning. waves 2 to 4 feet building to 3 to 5 feet late in the
afternoon. 
.saturday...north winds 5 to 10 knots early in the morning
becoming light and variable...then becoming east 5 to 10 knots by
midnight. waves 2 to 4 feet subsiding to 2 feet or less. 
.sunday...south winds 5 to 10 knots becoming southwest 10 to
15 knots in the late morning and early afternoon...then becoming
northwest 15 to 20 knots with gusts to around 30 knots . waves
1 to 3 feet building to 4 to 6 feet . waves occasionally around
8 feet. 


$$

fzus63 kdtx 291944
glflh 
expires:202609300345;;262950

open lake forecast for lake huron
national weather service detroit/pontiac mi
344 pm edt tue sep 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...high pressure, 30.10 inches, exits east of the central
great lakes this evening. southwest winds then slowly increase
through tomorrow, ahead of a cold front. this front looks to get
hung up over southern lower michigan, leading to occasional
showers in the wednesday to friday timeframe.


lhz462>464-300345-
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-
344 pm edt tue sep 29 2026

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


$$

fzus63 kmkx 291942
glflm 
expires:202609300315;;262866

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
242 pm cdt tue sep 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...

southerly winds will increase tonight into wednesday, becoming 
southwest wednesday night into thursday, as a cold front 
approaches from the northern plains. wind gusts to 30 knots are 
possible wednesday into wednesday evening, along with building 
waves, particularly across central and northern portions of the 
lake.

expect northwest winds in the wake of the front thursday 
afternoon, with north to northeast winds thursday night into 
friday. strong high pressure around 30.4 inches will overspread 
the great lakes friday night. a fast-moving low pressure system 
around 29.8 inches should move across or north of lake superior 
saturday night, with high pressure around 30.4 inches moving 
southeast into the region by early next week. northwest to north 
winds should result across lake michigan.


lmz080-669-671-673-675-777-779-870-872-874-876-878-300315-
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-
242 pm cdt tue sep 29 2026

sheboygan wi to pentwater mi south...

.tonight...south winds 10 to 20 kt. chance of showers overnight.
waves 3 to 5 ft. 
.wednesday...south winds 15 to 25 kt increasing to 30 kt. showers
in the morning, then showers likely in the afternoon. waves 4 to
6 ft occasionally to 8 ft building to 6 to 9 ft occasionally to
12 ft. 
.wednesday night...south winds to 30 kt becoming southwest 10 to
20 kt. chance of showers in the evening, then showers overnight.
waves 6 to 9 ft occasionally to 12 ft subsiding to 2 to 4 ft. 
.thursday...southwest winds 10 to 20 kt becoming northwest.
showers. waves 2 to 4 ft subsiding to 1 to 2 ft. 
.thursday night...north winds 10 to 20 kt. showers in the
evening, then chance of showers overnight. waves 1 to 3 ft
building to 4 to 6 ft occasionally to 8 ft. 
.friday...northeast winds 10 to 20 kt becoming north 15 to 25 kt.
waves 4 to 7 ft occasionally to 9 ft. 
.friday night...northeast winds 10 to 20 kt diminishing to 10 to
15 kt. waves 4 to 7 ft occasionally to 9 ft subsiding to 3 to
5 ft. 
.saturday...east winds 10 to 15 kt diminishing to 5 to 10 kt.
waves 2 to 4 ft subsiding to 1 to 3 ft. 
.sunday...west winds 10 to 20 kt becoming northwest. waves 2 to
4 ft.  

$$

fzus63 kmkx 291942
glflm 
expires:202609300315;;262865

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
242 pm cdt tue sep 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...

southerly winds will increase tonight into wednesday, becoming 
southwest wednesday night into thursday, as a cold front 
approaches from the northern plains. wind gusts to 30 knots are 
possible wednesday into wednesday evening, along with building 
waves, particularly across central and northern portions of the 
lake.

expect northwest winds in the wake of the front thursday 
afternoon, with north to northeast winds thursday night into 
friday. strong high pressure around 30.4 inches will overspread 
the great lakes friday night. a fast-moving low pressure system 
around 29.8 inches should move across or north of lake superior 
saturday night, with high pressure around 30.4 inches moving 
southeast into the region by early next week. northwest to north 
winds should result across lake michigan.


lmz261-362-364-366-563-565-567-868-300315-
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-
242 pm cdt tue sep 29 2026

sheboygan wi to pentwater mi north...

.tonight...south winds 10 to 20 kt increasing to 30 kt. slight
chance of showers this evening, then showers overnight. waves
3 to 5 ft building to 4 to 7 ft occasionally to 9 ft.
.wednesday...south winds to 30 kt becoming southwest. chance of
showers in the morning, then slight chance of showers in the
afternoon. waves 6 to 9 ft occasionally to 12 ft. 
.wednesday night...southwest winds to 30 kt diminishing to 10 to
20 kt. chance of showers overnight. waves 6 to 9 ft occasionally
to 12 ft subsiding to 3 to 5 ft. 
.thursday...west winds 10 to 20 kt becoming northwest. chance of
showers. waves 2 to 4 ft subsiding to 1 to 3 ft. 
.thursday night...north winds 10 to 20 kt. chance of showers in
the evening. waves 1 to 2 ft building to 2 to 4 ft. 
.friday...north winds 10 to 20 kt. waves 2 to 4 ft. 
.friday night...north winds 10 to 20 kt becoming northeast 5 to
10 kt. waves 1 to 3 ft. 
.saturday...southeast winds 5 to 10 kt becoming south. waves 1 to
2 ft. 
.sunday...west winds 15 to 25 kt becoming northwest to 30 kt.
waves 2 to 4 ft.  

$$

fzus63 kmqt 292002
glfls 
expires:202609300800;;263637

open lake forecast for lake superior
national weather service marquette mi
401 pm edt tue sep 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 deep 29.3 inch low over the northern canadian territories and 
provinces is extending 29.6 to 29.7 inch troughing south through the 
plains this afternoon and evening. pressure falls to 29.7 inches 
over lake superior tonight and could deepen to 29.6 inches on 
wednesday as the deep canadian low strengthens to 29.0 inches over 
hudson bay wednesday afternoon. 29.8 inch troughing lingers over the 
lake on thursday between this low and another 29.7 low over the 
southern plains. high pressure then builds to 30.3 inches over the 
northern plains thursday night into friday before shifting east into 
the great lakes friday night and saturday. in it's wake, a weak 30.0 
inch clipper moves over lake superior saturday night and sunday, 
with 30.3 inch ridging returning sunday night and monday. 




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

.late this afternoon...southwest winds 15 to 25 knots. showers
likely and a slight chance of thunderstorms. waves 1 to 3 feet. 
.tonight...south winds 15 to 25 knots becoming southwest 10 to
20 knots after midnight. a chance of showers through midnight.
waves subsiding to calm to 2 feet. 
.wednesday...southwest winds 10 to 20 knots. waves building to
1 to 3 feet, then subsiding to calm to 2 feet. 
.wednesday night...southwest winds 10 to 20 knots veering west
after midnight. waves calm to 2 feet. 
.thursday...west winds 10 to 20 knots. waves calm to 2 feet. 
.thursday night...northwest winds 10 to 20 knots. waves calm to
2 feet. 
.friday...northwest winds 10 to 20 knots becoming west 5 to
15 knots by mid afternoon. waves calm to 2 feet. 
.friday night...west winds 5 to 15 knots becoming southwest less
than 10 knots after midnight. waves calm to 2 feet. 
.saturday...southwest winds 5 to 15 knots becoming west 10 to
20 knots. a chance of showers. waves calm to 2 feet. 
.sunday...northwest winds 15 to 25 knots diminishing to 10 to
20 knots. waves calm to 2 feet. 

$$

fzus63 kmqt 292002
glfls 
expires:202609300800;;263638

open lake forecast for lake superior
national weather service marquette mi
401 pm edt tue sep 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 deep 29.3 inch low over the northern canadian territories and 
provinces is extending 29.6 to 29.7 inch troughing south through the 
plains this afternoon and evening. pressure falls to 29.7 inches 
over lake superior tonight and could deepen to 29.6 inches on 
wednesday as the deep canadian low strengthens to 29.0 inches over 
hudson bay wednesday afternoon. 29.8 inch troughing lingers over the 
lake on thursday between this low and another 29.7 low over the 
southern plains. high pressure then builds to 30.3 inches over the 
northern plains thursday night into friday before shifting east into 
the great lakes friday night and saturday. in it's wake, a weak 30.0 
inch clipper moves over lake superior saturday night and sunday, 
with 30.3 inch ridging returning sunday night and monday. 




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 tue sep 29 2026

.late this afternoon...south winds 10 to 20 knots. a chance of
showers. waves 1 to 3 feet. 
.tonight...southwest winds 15 to 25 knots diminishing to 10 to
20 knots late. a chance of showers through midnight. waves
building to 2 to 4 feet, then subsiding to 1 to 3 feet. 
.wednesday...southwest winds 10 to 20 knots increasing to 15 to
25 knots in the afternoon, then diminishing to 10 to 20 knots
late. waves building to 2 to 4 feet, then subsiding to 1 to
3 feet. 
.wednesday night...southwest winds 5 to 15 knots increasing to
10 to 20 knots after midnight, then veering west late. waves
subsiding to calm to 2 feet. 
.thursday...west winds 10 to 20 knots increasing to 15 to
25 knots by mid afternoon. waves building to 1 to 3 feet. 
.thursday night...northwest winds 10 to 20 knots. waves building
to 2 to 4 feet. 
.friday...northwest winds 10 to 20 knots becoming west 5 to
15 knots by mid afternoon. waves subsiding to calm to 2 feet. 
.friday night...west winds 5 to 15 knots backing southwest after
midnight. waves calm to 2 feet. 
.saturday...southwest winds 10 to 20 knots becoming west 15 to
25 knots. a chance of showers. waves building to 2 to 4 feet. 
.sunday...northwest winds 15 to 25 knots. waves subsiding to 1 to
3 feet. 

$$

fzus63 kmqt 292002
glfls 
expires:202609300800;;263639

open lake forecast for lake superior
national weather service marquette mi
401 pm edt tue sep 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 deep 29.3 inch low over the northern canadian territories and 
provinces is extending 29.6 to 29.7 inch troughing south through the 
plains this afternoon and evening. pressure falls to 29.7 inches 
over lake superior tonight and could deepen to 29.6 inches on 
wednesday as the deep canadian low strengthens to 29.0 inches over 
hudson bay wednesday afternoon. 29.8 inch troughing lingers over the 
lake on thursday between this low and another 29.7 low over the 
southern plains. high pressure then builds to 30.3 inches over the 
northern plains thursday night into friday before shifting east into 
the great lakes friday night and saturday. in it's wake, a weak 30.0 
inch clipper moves over lake superior saturday night and sunday, 
with 30.3 inch ridging returning sunday night and monday. 




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 tue sep 29 2026

.late this afternoon...south winds 10 to 20 knots. a chance of
showers. waves 2 to 4 feet building to 3 to 5 feet occasionally
to 7 feet, then subsiding to 2 to 4 feet. 
.tonight...south winds 10 to 20 knots veering southwest after
midnight. a chance of showers. waves 2 to 4 feet. 
.wednesday...southwest winds 10 to 20 knots. waves subsiding to
1 to 3 feet, then building to 2 to 4 feet. 
.wednesday night...southwest winds 5 to 15 knots veering west
late. waves subsiding to calm to 2 feet. 
.thursday...northwest winds 15 to 25 knots backing west by mid
afternoon. waves building to 2 to 4 feet. 
.thursday night...northwest winds 15 to 25 knots diminishing to
10 to 20 knots after midnight. waves subsiding to 1 to 3 feet,
then building to 2 to 4 feet. 
.friday...northwest winds 15 to 25 knots backing west by mid
afternoon. waves building to 3 to 5 feet occasionally to 7 feet,
then subsiding to 1 to 3 feet. 
.friday night...west winds 5 to 15 knots backing southwest after
midnight. waves subsiding to calm to 2 feet. 
.saturday...southwest winds 5 to 15 knots becoming west 15 to
25 knots. showers likely. waves building to 2 to 4 feet. 
.sunday...northwest winds 20 to 30 knots diminishing to 15 to
25 knots. waves building to 3 to 6 feet occasionally to 8 feet,
then subsiding to 1 to 3 feet. 

$$

fzus63 kmqt 292002
glfls 
expires:202609300800;;263640

open lake forecast for lake superior
national weather service marquette mi
401 pm edt tue sep 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 deep 29.3 inch low over the northern canadian territories and 
provinces is extending 29.6 to 29.7 inch troughing south through the 
plains this afternoon and evening. pressure falls to 29.7 inches 
over lake superior tonight and could deepen to 29.6 inches on 
wednesday as the deep canadian low strengthens to 29.0 inches over 
hudson bay wednesday afternoon. 29.8 inch troughing lingers over the 
lake on thursday between this low and another 29.7 low over the 
southern plains. high pressure then builds to 30.3 inches over the 
northern plains thursday night into friday before shifting east into 
the great lakes friday night and saturday. in it's wake, a weak 30.0 
inch clipper moves over lake superior saturday night and sunday, 
with 30.3 inch ridging returning sunday night and monday. 




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

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

$$

fzus63 kmqt 292002
glfls 
expires:202609300800;;263641

open lake forecast for lake superior
national weather service marquette mi
401 pm edt tue sep 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 deep 29.3 inch low over the northern canadian territories and 
provinces is extending 29.6 to 29.7 inch troughing south through the 
plains this afternoon and evening. pressure falls to 29.7 inches 
over lake superior tonight and could deepen to 29.6 inches on 
wednesday as the deep canadian low strengthens to 29.0 inches over 
hudson bay wednesday afternoon. 29.8 inch troughing lingers over the 
lake on thursday between this low and another 29.7 low over the 
southern plains. high pressure then builds to 30.3 inches over the 
northern plains thursday night into friday before shifting east into 
the great lakes friday night and saturday. in it's wake, a weak 30.0 
inch clipper moves over lake superior saturday night and sunday, 
with 30.3 inch ridging returning sunday night and monday. 




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 tue sep 29 2026

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

$$

fzus63 kmqt 292002
glfls 
expires:202609300800;;263642

open lake forecast for lake superior
national weather service marquette mi
401 pm edt tue sep 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 deep 29.3 inch low over the northern canadian territories and 
provinces is extending 29.6 to 29.7 inch troughing south through the 
plains this afternoon and evening. pressure falls to 29.7 inches 
over lake superior tonight and could deepen to 29.6 inches on 
wednesday as the deep canadian low strengthens to 29.0 inches over 
hudson bay wednesday afternoon. 29.8 inch troughing lingers over the 
lake on thursday between this low and another 29.7 low over the 
southern plains. high pressure then builds to 30.3 inches over the 
northern plains thursday night into friday before shifting east into 
the great lakes friday night and saturday. in it's wake, a weak 30.0 
inch clipper moves over lake superior saturday night and sunday, 
with 30.3 inch ridging returning sunday night and monday. 




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

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

$$