fzus61 kbuf 100202
glflo 
expires:202605100900;;301866

open lake forecast for lake ontario
national weather service buffalo ny
1002 pm edt sat may 9 2026

for waters beyond five nautical miles of shore on lake ontario

waves are the significant wave height - the average of the highest
1/3 of the wave spectrum. occasional wave height is the average of
the highest 1/10 of the wave spectrum.

.synopsis...a weak 29.5 inch low will move from the upper great 
lakes tonight to western quebec by early sunday before moving to 
northern quebec early monday. meanwhile, a trailing cold front will 
cross the lake tonight. a 30.4 inch high will then build from the 
upper great lakes monday to the lower great lakes by tuesday. a 29.8 
inch low will move across the lower great lakes into the ohio valley 
wednesday.


loz063>065-100900-
lake ontario open waters from hamlin beach to the saint lawrence
river-
1002 pm edt sat may 9 2026

.rest of tonight...southwest winds 15 to 20 knots becoming west
10 to 15 knots. showers likely late this evening, then a chance
of showers after midnight. waves 1 to 3 feet building to 2 to
4 feet, then subsiding to 1 to 3 feet. 
.sunday...west winds 10 to 15 knots increasing to 15 to 20 knots.
waves 1 to 3 feet building to 2 to 4 feet. 
.sunday night...west winds 15 to 20 knots diminishing to 5 to
10 knots. waves 2 to 4 feet subsiding to 1 foot or less. 
.monday...west winds 5 to 15 knots. waves 1 to 3 feet. 
.monday night...west winds 5 to 15 knots becoming northwest.
waves 1 to 3 feet. 
.tuesday...northwest winds 5 to 15 knots becoming southeast. rain
showers likely tuesday night. waves 2 feet or less. 
.wednesday...southeast winds 15 to 20 knots becoming south 10 to
15 knots. showers. waves 1 to 3 feet. 
.thursday...northwest winds 5 to 10 knots becoming north. a
chance of showers. waves 2 feet or less. 

$$

fzus61 kbuf 100202
glflo 
expires:202605100900;;301865

open lake forecast for lake ontario
national weather service buffalo ny
1002 pm edt sat may 9 2026

for waters beyond five nautical miles of shore on lake ontario

waves are the significant wave height - the average of the highest
1/3 of the wave spectrum. occasional wave height is the average of
the highest 1/10 of the wave spectrum.

.synopsis...a weak 29.5 inch low will move from the upper great 
lakes tonight to western quebec by early sunday before moving to 
northern quebec early monday. meanwhile, a trailing cold front will 
cross the lake tonight. a 30.4 inch high will then build from the 
upper great lakes monday to the lower great lakes by tuesday. a 29.8 
inch low will move across the lower great lakes into the ohio valley 
wednesday.


loz062-100900-
lake ontario open waters from the niagara river to hamlin beach-
1002 pm edt sat may 9 2026

.rest of tonight...southwest winds 15 to 20 knots becoming west
10 to 15 knots. a chance of showers late this evening. waves 2 to
3 feet. 
.sunday...west winds 10 to 15 knots becoming southwest. waves
1 to 2 feet. 
.sunday night...west winds 5 to 10 knots becoming northwest.
waves 1 to 2 feet. 
.monday...northwest winds 5 to 10 knots becoming west. waves
2 feet or less. 
.monday night...west winds 5 to 10 knots becoming northwest.
waves 2 feet or less. 
.tuesday...west winds 10 knots or less becoming southeast 10 to
15 knots. rain showers tuesday night. waves 2 feet or less. 
.wednesday...southeast winds 15 to 20 knots becoming north 10 to
15 knots. showers. waves 1 to 3 feet. 
.thursday...north winds 5 to 15 knots. a chance of showers during
the day. waves 1 to 2 feet. 

$$

fzus61 kcle 100738
glfle 
expires:202605101415;;315293

open lake forecast for lake erie
national weather service cleveland oh
338 am edt sun may 10 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 ridge averaging 30.10 inches affects lake erie as the embedded 
high pressure center moves from the canadian prairies to atlantic 
waters near the mid-atlantic states through tuesday. the ridge exits 
generally eastward tuesday night through wednesday night as a low of 
29.70 inches wobbles east-southeastward from the northwestern great 
lakes toward lake ontario. this low track should allow a warm front 
to sweep northward across lake erie tuesday night and a cold front 
to sweep eastward across the lake on wednesday through wednesday 
night. behind the cold front, another high pressure ridge averaging 
30.10 inches should build from the western great lakes through 
thursday. 


lez165>167-101415-
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-
338 am edt sun may 10 2026

.today...north winds 5 to 10 knots becoming southwest. waves
2 feet or less. 
.tonight...south winds 5 to 10 knots becoming north. waves 2 feet
or less. 
.monday...north winds 5 to 10 knots. waves 1 to 2 feet. 
.monday night...north winds 10 knots or less becoming east. waves
1 foot or less. 
.tuesday...southeast winds 5 to 10 knots becoming south and
increasing to 15 to 20 knots. showers tuesday night. waves 1 foot
or less building to 3 to 5 feet. 
.wednesday...southwest winds 15 to 20 knots becoming northwest
10 to 15 knots. a chance of showers. waves 3 to 5 feet subsiding
to 2 to 4 feet. 
.thursday...northwest winds 5 to 15 knots becoming west less than
10 knots. waves 1 to 3 feet subsiding to 1 foot or less. 

$$

fzus61 kcle 100738
glfle 
expires:202605101415;;315292

open lake forecast for lake erie
national weather service cleveland oh
338 am edt sun may 10 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 ridge averaging 30.10 inches affects lake erie as the embedded 
high pressure center moves from the canadian prairies to atlantic 
waters near the mid-atlantic states through tuesday. the ridge exits 
generally eastward tuesday night through wednesday night as a low of 
29.70 inches wobbles east-southeastward from the northwestern great 
lakes toward lake ontario. this low track should allow a warm front 
to sweep northward across lake erie tuesday night and a cold front 
to sweep eastward across the lake on wednesday through wednesday 
night. behind the cold front, another high pressure ridge averaging 
30.10 inches should build from the western great lakes through 
thursday. 


lez162>164-101415-
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-
338 am edt sun may 10 2026

.today...north winds 5 to 10 knots becoming south. waves 1 foot
or less. 
.tonight...southwest winds 5 to 10 knots becoming north. waves
2 feet or less. 
.monday...north winds 5 to 10 knots becoming east. waves 2 feet
or less. 
.monday night...east winds 5 to 10 knots becoming southeast.
waves 1 foot or less. 
.tuesday...south winds 5 to 10 knots becoming southwest and
increasing to 15 to 25 knots. showers tuesday night. waves 1 foot
or less building to 2 to 4 feet. 
.wednesday...west winds 15 to 20 knots becoming northwest. waves
2 to 4 feet subsiding to 1 to 3 feet. 
.thursday...northwest winds 15 to 20 knots becoming south and
diminishing to 5 to 10 knots. waves 1 to 3 feet subsiding to
1 foot or less. 

$$

fzus61 kcle 100738
glfle 
expires:202605101415;;315294

open lake forecast for lake erie
national weather service cleveland oh
338 am edt sun may 10 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 ridge averaging 30.10 inches affects lake erie as the embedded 
high pressure center moves from the canadian prairies to atlantic 
waters near the mid-atlantic states through tuesday. the ridge exits 
generally eastward tuesday night through wednesday night as a low of 
29.70 inches wobbles east-southeastward from the northwestern great 
lakes toward lake ontario. this low track should allow a warm front 
to sweep northward across lake erie tuesday night and a cold front 
to sweep eastward across the lake on wednesday through wednesday 
night. behind the cold front, another high pressure ridge averaging 
30.10 inches should build from the western great lakes through 
thursday. 


lez061-168-169-101415-
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-
338 am edt sun may 10 2026

.today...northwest winds 10 knots or less becoming southwest.
waves 2 feet or less. 
.tonight...southwest winds 10 knots or less becoming northwest.
waves 1 foot or less. 
.monday...north winds 5 to 10 knots becoming west. waves 1 foot
or less. 
.monday night...west winds 10 knots or less becoming northeast.
waves 2 feet or less. 
.tuesday...light and variable winds becoming south 15 to
20 knots. rain showers tuesday night. waves 1 foot or less
building to 2 to 4 feet. 
.wednesday...southwest winds 15 to 20 knots becoming northwest
10 to 15 knots. showers likely with a chance of thunderstorms
during the day, then a chance of showers wednesday night. waves
2 to 4 feet subsiding to 1 to 3 feet. 
.thursday...northwest winds 5 to 15 knots becoming west less than
10 knots. waves 1 to 3 feet subsiding to 1 foot or less. 

winds and waves higher in and near thunderstorms.

$$

fzus63 kdtx 100141
glfsc 
expires:202605100945;;301349

lake st clair forecast
national weather service detroit/pontiac mi
941 pm edt sat may 9 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, 30.30 inches, builds in tonight and
slides across the region through monday leading to generally
lighter winds. next low crosses late tuesday bringing stronger
flow and the next shower and thunderstorm chances.


lcz460-100945-
lake st clair-
941 pm edt sat may 9 2026

.rest of tonight...northwest winds 10 to 15 knots becoming north 5
to 10 knots early in the morning. partly cloudy in the late evening
and early morning then clearing. waves 2 feet or less.
.sunday...northwest winds 5 to 10 knots becoming west 10 to 15 knots
late in the afternoon. mostly sunny until late afternoon becoming
mostly cloudy. waves 2 feet or less.
.sunday night...northwest winds 10 to 15 knots becoming north 5 to
10 knots in the late evening and overnight. mostly cloudy early in
the evening then clearing. waves 2 feet or less.
.monday...north winds 5 to 10 knots. sunny. waves 2 feet or less.
.monday night...northeast winds 5 to 10 knots veering to the
southeast after midnight. clear. waves 2 feet or less.
.tuesday...south winds 5 to 10 knots increasing to 20 to 25 knots.
mostly sunny in the morning. light showers likely in the afternoon.
rain showers in the evening. waves 2 feet or less.
.wednesday...northwest winds 20 to 25 knots with gusts to 30 knots.
partly cloudy. showers. waves 2 to 4 feet. a small craft advisory
may be needed.
.thursday...northeast winds 15 to 20 knots. partly cloudy. waves 2
feet or less.

$$

fzus63 kdtx 100141
glflh 
expires:202605100945;;301346

open lake forecast for lake huron
national weather service detroit/pontiac mi
941 pm edt sat may 9 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, 30.30 inches, builds in tonight and
slides across the region through monday leading to generally
lighter winds. next low crosses late tuesday bringing stronger
flow and the next shower and thunderstorm chances.


lhz361-362-100945-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
lake huron from presque isle light to sturgeon point mi beyond
5nm off shore-
941 pm edt sat may 9 2026

.rest of tonight...northwest winds 15 to 20 knots. waves 6 to
9 feet. waves occasionally around 12 feet. 
.sunday...west winds 10 to 15 knots. waves 3 to 5 feet. 
.sunday night...northwest winds 10 to 15 knots. a chance of
showers in the evening. waves 3 to 5 feet. 
.monday...northwest winds 10 to 15 knots becoming north 5 to
10 knots early in the afternoon. waves 2 to 4 feet subsiding to
1 to 3 feet early in the afternoon. 
.monday night...west winds 5 to 10 knots  becoming light and
variable. waves 1 to 3 feet. 
.tuesday...light and variable winds becoming southeast 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. showers
likely late in the morning. showers late in the afternoon. waves
2 feet or less building to 6 to 9 feet. waves occasionally around
12 feet. 
.wednesday...northeast winds 15 to 20 knots backing to the north.
showers likely early in the morning...then a chance of showers
until early evening. waves 6 to 9 feet subsiding to 3 to 5 feet
by midnight. waves occasionally around 12 feet. 
.thursday...northwest winds 10 to 15 knots becoming southwest by
midnight. waves 3 to 5 feet subsiding to 1 to 3 feet . 


$$

fzus63 kdtx 100141
glflh 
expires:202605100945;;301347

open lake forecast for lake huron
national weather service detroit/pontiac mi
941 pm edt sat may 9 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, 30.30 inches, builds in tonight and
slides across the region through monday leading to generally
lighter winds. next low crosses late tuesday bringing stronger
flow and the next shower and thunderstorm chances.


lhz363-462>464-100945-
lake huron from sturgeon point to alabaster mi beyond 5nm off
shore-
lake huron from port austin to harbor beach beyond 5nm off shore-
lake huron from harbor beach to port sanilac beyond 5nm off shore-
lake huron from port sanilac to port huron beyond 5nm off shore-
941 pm edt sat may 9 2026

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


$$

fzus63 kmkx 100215
glflm 
expires:202605100915;;302647

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
915 pm cdt sat may 9 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...

a backdoor cold front will sag southward across the lake through 
the next few hours as low pressure of 29.4 inches lift north
toward james bay tonight. winds will largely become westerly
behind the front into the post dawn hours tomorrow.

high pressure around 30.3 inches is then expected to move from 
southern manitoba during the day tomorrow, to over lake michigan 
by monday morning. relatively light and variable winds are 
expected during this period. low pressure around 29.7 inches 
should then move east southeast across the region tuesday, with 
increasing south to southeast winds ahead of it, veering west to 
northwest behind it for tuesday night into wednesday.


lmz080-669-671-673-675-777-779-870-872-874-876-878-100915-
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-
915 pm cdt sat may 9 2026

sheboygan wi to pentwater mi south...

.rest of tonight...north winds 10 to 20 kt diminishing to 5 to
10 kt. waves 1 to 3 ft. 
.sunday...west winds 10 to 15 kt becoming northwest 10 to 20 kt.
waves 1 to 2 ft. 
.sunday night...southeast winds 10 to 15 kt becoming northeast.
waves 1 to 2 ft. 
.monday...northeast winds 5 to 10 kt increasing to 10 to 20 kt in
the afternoon. waves 1 to 2 ft. 
.monday night...east winds 10 to 15 kt becoming southeast. waves
1 to 2 ft. 
.tuesday...south winds to 30 kt. rain showers. waves 4 to 7 ft
occasionally to 9 ft building to 6 to 9 ft occasionally to 12 ft.
.tuesday night...southwest winds to 30 kt becoming west 15 to
25 kt. chance of rain showers. waves 6 to 9 ft occasionally to
12 ft. 
.wednesday...northwest winds to 30 kt becoming north. waves 6 to
9 ft occasionally to 12 ft. 
.thursday...north winds 10 to 15 kt increasing to 10 to 20 kt.
waves 2 to 4 ft subsiding to 1 to 3 ft.  

$$

fzus63 kmkx 100215
glflm 
expires:202605100915;;302646

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
915 pm cdt sat may 9 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...

a backdoor cold front will sag southward across the lake through 
the next few hours as low pressure of 29.4 inches lift north
toward james bay tonight. winds will largely become westerly
behind the front into the post dawn hours tomorrow.

high pressure around 30.3 inches is then expected to move from 
southern manitoba during the day tomorrow, to over lake michigan 
by monday morning. relatively light and variable winds are 
expected during this period. low pressure around 29.7 inches 
should then move east southeast across the region tuesday, with 
increasing south to southeast winds ahead of it, veering west to 
northwest behind it for tuesday night into wednesday.


lmz261-362-364-366-563-565-567-868-100915-
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-
915 pm cdt sat may 9 2026

sheboygan wi to pentwater mi north...

.rest of tonight...north winds 15 to 25 kt backing to west 10 to
20 kt. waves 1 to 3 ft. 
.sunday...west winds 10 to 20 kt. waves 1 to 3 ft. 
.sunday night...north winds 10 to 20 kt becoming northwest 10 to
15 kt. waves 1 to 2 ft. 
.monday...northwest winds 10 to 15 kt backing to south. waves
1 to 2 ft. 
.monday night...south winds 10 to 15 kt. waves 1 to 2 ft. 
.tuesday...south winds to 30 kt. rain showers. waves 4 to 7 ft
occasionally to 9 ft building to 6 to 9 ft occasionally to 12 ft.
.tuesday night...south winds to 30 kt veering to northwest 15 to
25 kt. chance of rain showers. waves 6 to 9 ft occasionally to
12 ft subsiding to 4 to 6 ft occasionally to 8 ft. 
.wednesday...northwest winds to 30 kt becoming north. waves 4 to
7 ft occasionally to 9 ft. 
.thursday...north winds 10 to 15 kt backing to southwest. waves
1 to 3 ft.  

$$

fzus63 kmqt 100202
glfls 
expires:202605100800;;301861

open lake forecast for lake superior
national weather service marquette mi
1001 pm edt sat may 9 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... 

heights are rising over the lake this evening as 29.4 inch low 
pressure moves eastward into southern quebec and 30.2 inch high 
pressure over the canadian prairie expands eastward. the high shifts 
southeast into the western great lakes at 30.3 inches sunday night 
into monday. ridging from the high persists at around 30.2 inches 
over lake superior through monday evening. the ridging is eventually 
replaced by a 29.7 inch clipper descending over western lake 
superior on tuesday as the previous high pressure weakens and shifts 
to the east coast. as the clipper continues towards the eastern 
great lakes tuesday night into wednesday, 30.1 inch high pressure 
ridging moves over lake superior. this high pressure is pressed 
southeast to the lower great lakes on thursday while a 29.4 inch low 
emanates off the northern rockies.



lsz266-100800-
lake superior east of a line from manitou island to marquette mi
and west of a line from grand marais mi to the us/canadian border
beyond 5nm from shore-
1001 pm edt sat may 9 2026

.rest of tonight...northwest winds 15 to 25 knots. waves 3 to
6 feet occasionally to 8 feet subsiding to 2 to 4 feet. 
.sunday...northwest winds 15 to 25 knots diminishing to 10 to
20 knots late. waves 2 to 4 feet. 
.sunday night...northwest winds 10 to 20 knots. waves subsiding
to calm to 2 feet. 
.monday...northwest winds 5 to 15 knots backing west by mid
afternoon. waves calm to 2 feet. 
.monday night...southeast winds 5 to 15 knots increasing to 10 to
20 knots after midnight. waves building to 2 to 4 feet. 
.tuesday...south winds 20 to 30 knots backing southeast by mid
afternoon. a chance of rain showers through early afternoon, then
rain showers likely by mid afternoon. waves building to 4 to
8 feet occasionally to 10 feet. 
.tuesday night...southeast winds 15 to 25 knots becoming north
20 to 30 knots after midnight. a chance of rain showers. waves
subsiding to 2 to 4 feet, then building to 3 to 6 feet
occasionally to 8 feet. 
.wednesday...northwest gales to 35 knots diminishing to 10 to
20 knots. waves building to 6 to 9 feet occasionally to 11 feet,
then subsiding to calm to 2 feet. 
.thursday...southeast winds 10 to 20 knots becoming south 15 to
25 knots. waves building to 3 to 6 feet occasionally to 8 feet. 

$$

fzus63 kmqt 100202
glfls 
expires:202605100800;;301862

open lake forecast for lake superior
national weather service marquette mi
1001 pm edt sat may 9 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... 

heights are rising over the lake this evening as 29.4 inch low 
pressure moves eastward into southern quebec and 30.2 inch high 
pressure over the canadian prairie expands eastward. the high shifts 
southeast into the western great lakes at 30.3 inches sunday night 
into monday. ridging from the high persists at around 30.2 inches 
over lake superior through monday evening. the ridging is eventually 
replaced by a 29.7 inch clipper descending over western lake 
superior on tuesday as the previous high pressure weakens and shifts 
to the east coast. as the clipper continues towards the eastern 
great lakes tuesday night into wednesday, 30.1 inch high pressure 
ridging moves over lake superior. this high pressure is pressed 
southeast to the lower great lakes on thursday while a 29.4 inch low 
emanates off the northern rockies.



lsz267-100800-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
1001 pm edt sat may 9 2026

.rest of tonight...northwest winds 20 to 30 knots diminishing to
15 to 25 knots after midnight. waves 4 to 7 feet occasionally to
9 feet subsiding to 2 to 4 feet. 
.sunday...northwest winds 10 to 20 knots increasing to 15 to
25 knots in the afternoon. waves building to 3 to 5 feet
occasionally to 7 feet. 
.sunday night...northwest winds 15 to 25 knots diminishing to
5 to 15 knots. waves subsiding to 1 to 3 feet. 
.monday...northwest winds 5 to 15 knots. waves subsiding to calm
to 2 feet. 
.monday night...south winds less than 10 knots becoming southeast
5 to 15 knots after midnight. waves calm to 2 feet. 
.tuesday...southeast winds 10 to 20 knots increasing to 15 to
25 knots by mid afternoon. rain showers likely by mid afternoon.
waves building to 2 to 4 feet. 
.tuesday night...southeast winds 15 to 25 knots becoming north
10 to 20 knots after midnight. a chance of rain showers. waves
subsiding to 1 to 3 feet. 
.wednesday...northwest winds 15 to 25 knots diminishing to 10 to
20 knots. waves building to 3 to 5 feet occasionally to 7 feet,
then subsiding to 1 to 3 feet. 
.thursday...west winds 5 to 15 knots becoming south 10 to
20 knots. waves subsiding to calm to 2 feet, then building to
1 to 3 feet. 

$$

fzus63 kmqt 100202
glfls 
expires:202605100800;;301859

open lake forecast for lake superior
national weather service marquette mi
1001 pm edt sat may 9 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... 

heights are rising over the lake this evening as 29.4 inch low 
pressure moves eastward into southern quebec and 30.2 inch high 
pressure over the canadian prairie expands eastward. the high shifts 
southeast into the western great lakes at 30.3 inches sunday night 
into monday. ridging from the high persists at around 30.2 inches 
over lake superior through monday evening. the ridging is eventually 
replaced by a 29.7 inch clipper descending over western lake 
superior on tuesday as the previous high pressure weakens and shifts 
to the east coast. as the clipper continues towards the eastern 
great lakes tuesday night into wednesday, 30.1 inch high pressure 
ridging moves over lake superior. this high pressure is pressed 
southeast to the lower great lakes on thursday while a 29.4 inch low 
emanates off the northern rockies.



lsz264-100800-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
1001 pm edt sat may 9 2026

.rest of tonight...northwest winds 5 to 15 knots. waves 1 to
3 feet. 
.sunday...northwest winds 5 to 15 knots backing west late. waves
subsiding to calm to 2 feet. 
.sunday night...west winds 5 to 15 knots veering north late.
waves calm to 2 feet. 
.monday...northwest winds less than 10 knots becoming south 5 to
15 knots by mid afternoon. waves calm to 2 feet. 
.monday night...south winds 5 to 15 knots becoming southeast
10 to 20 knots after midnight. waves building to 1 to 3 feet. 
.tuesday...southeast winds 20 to 30 knots. rain showers likely.
waves building to 4 to 8 feet occasionally to 10 feet. 
.tuesday night...northeast winds 15 to 25 knots becoming north
10 to 20 knots after midnight. a chance of rain showers. waves
subsiding to 2 to 4 feet. 
.wednesday...northwest winds 15 to 25 knots becoming west 5 to
15 knots. waves subsiding to calm to 2 feet. 
.thursday...south winds 5 to 15 knots increasing to 10 to
20 knots. a chance of rain showers. waves building to 2 to
4 feet. 

$$

fzus63 kmqt 100202
glfls 
expires:202605100800;;301858

open lake forecast for lake superior
national weather service marquette mi
1001 pm edt sat may 9 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... 

heights are rising over the lake this evening as 29.4 inch low 
pressure moves eastward into southern quebec and 30.2 inch high 
pressure over the canadian prairie expands eastward. the high shifts 
southeast into the western great lakes at 30.3 inches sunday night 
into monday. ridging from the high persists at around 30.2 inches 
over lake superior through monday evening. the ridging is eventually 
replaced by a 29.7 inch clipper descending over western lake 
superior on tuesday as the previous high pressure weakens and shifts 
to the east coast. as the clipper continues towards the eastern 
great lakes tuesday night into wednesday, 30.1 inch high pressure 
ridging moves over lake superior. this high pressure is pressed 
southeast to the lower great lakes on thursday while a 29.4 inch low 
emanates off the northern rockies.



lsz263-100800-
lake superior from saxon harbor wi to upper entrance to portage
canal mi 5nm off shore to the us/canadian border including isle
royale national park-
1001 pm edt sat may 9 2026

.rest of tonight...northwest winds 5 to 15 knots. waves 1 to
3 feet. 
.sunday...northwest winds 5 to 15 knots backing west in the
afternoon. waves subsiding to calm to 2 feet. 
.sunday night...west winds 5 to 15 knots veering north after
midnight, then diminishing to less than 10 knots late. waves calm
to 2 feet. 
.monday...south winds 5 to 15 knots. waves calm to 2 feet. 
.monday night...southeast winds 5 to 15 knots. a chance of rain
showers after midnight. waves building to 1 to 3 feet. 
.tuesday...southeast winds 10 to 20 knots. rain showers. waves
building to 3 to 5 feet occasionally to 7 feet. 
.tuesday night...north winds 10 to 20 knots. waves subsiding to
2 to 4 feet. 
.wednesday...northwest winds 10 to 20 knots becoming west 5 to
15 knots. waves subsiding to calm to 2 feet. 
.thursday...south winds 5 to 15 knots increasing to 10 to
20 knots. a chance of rain showers. waves building to 2 to
4 feet. 

$$

fzus63 kmqt 100202
glfls 
expires:202605100800;;301857

open lake forecast for lake superior
national weather service marquette mi
1001 pm edt sat may 9 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... 

heights are rising over the lake this evening as 29.4 inch low 
pressure moves eastward into southern quebec and 30.2 inch high 
pressure over the canadian prairie expands eastward. the high shifts 
southeast into the western great lakes at 30.3 inches sunday night 
into monday. ridging from the high persists at around 30.2 inches 
over lake superior through monday evening. the ridging is eventually 
replaced by a 29.7 inch clipper descending over western lake 
superior on tuesday as the previous high pressure weakens and shifts 
to the east coast. as the clipper continues towards the eastern 
great lakes tuesday night into wednesday, 30.1 inch high pressure 
ridging moves over lake superior. this high pressure is pressed 
southeast to the lower great lakes on thursday while a 29.4 inch low 
emanates off the northern rockies.



lsz162-100800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1001 pm edt sat may 9 2026 /901 pm cdt sat may 9 2026/

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

$$

fzus63 kmqt 100202
glfls 
expires:202605100800;;301860

open lake forecast for lake superior
national weather service marquette mi
1001 pm edt sat may 9 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... 

heights are rising over the lake this evening as 29.4 inch low 
pressure moves eastward into southern quebec and 30.2 inch high 
pressure over the canadian prairie expands eastward. the high shifts 
southeast into the western great lakes at 30.3 inches sunday night 
into monday. ridging from the high persists at around 30.2 inches 
over lake superior through monday evening. the ridging is eventually 
replaced by a 29.7 inch clipper descending over western lake 
superior on tuesday as the previous high pressure weakens and shifts 
to the east coast. as the clipper continues towards the eastern 
great lakes tuesday night into wednesday, 30.1 inch high pressure 
ridging moves over lake superior. this high pressure is pressed 
southeast to the lower great lakes on thursday while a 29.4 inch low 
emanates off the northern rockies.



lsz265-100800-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
1001 pm edt sat may 9 2026

.rest of tonight...west winds 15 to 25 knots veering northwest
after midnight. waves 1 to 3 feet subsiding to calm to 2 feet. 
.sunday...northwest winds 10 to 20 knots. waves building to 1 to
3 feet, then 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...northwest winds 5 to 15 knots veering east by mid
afternoon. waves calm to 2 feet. 
.monday night...southeast winds 5 to 15 knots increasing to 10 to
20 knots after midnight. waves building to 2 to 4 feet. 
.tuesday...southeast winds 20 to 30 knots. rain showers likely.
waves building to 4 to 8 feet occasionally to 10 feet. 
.tuesday night...southeast winds 15 to 25 knots becoming north
20 to 30 knots after midnight. a chance of rain showers. waves
subsiding to 2 to 4 feet, then building to 3 to 6 feet
occasionally to 8 feet. 
.wednesday...northwest gales to 35 knots becoming west 10 to
20 knots. waves building to 5 to 8 feet occasionally to 10 feet,
then subsiding to calm to 2 feet. 
.thursday...southeast winds 10 to 20 knots becoming south 20 to
30 knots. a chance of rain showers. waves building to 3 to 5 feet
occasionally to 7 feet. 

$$