fzus61 kbuf 091402
glflo 
expires:202605092100;;273993

open lake forecast for lake ontario
national weather service buffalo ny
1002 am 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 today to western quebec by early sunday before moving to 
northern quebec early monday. meanwhile, a trailing cold front will 
cross the lake sunday night. 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.


loz062-092100-
lake ontario open waters from the niagara river to hamlin beach-
1002 am edt sat may 9 2026

.this afternoon...southeast winds 10 knots or less increasing to
10 to 15 knots. waves 2 feet or less. 
.tonight...southwest winds 15 to 20 knots becoming west 10 to
15 knots. a chance of showers in the evening. waves 1 to 3 feet. 
.sunday...west winds around 10 knots. waves 1 to 2 feet. 
.sunday night...west winds 5 to 10 knots becoming northwest.
waves 1 to 2 feet. 
.monday...west winds 5 to 10 knots becoming northwest. waves
2 feet or less. 
.tuesday...west 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 north 10 to
15 knots. showers likely during the day, then a chance of showers
wednesday night. waves 1 to 3 feet building to 2 to 4 feet, then
subsiding to 1 to 3 feet. 

$$

fzus61 kbuf 091402
glflo 
expires:202605092100;;273994

open lake forecast for lake ontario
national weather service buffalo ny
1002 am 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 today to western quebec by early sunday before moving to 
northern quebec early monday. meanwhile, a trailing cold front will 
cross the lake sunday night. 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>065-092100-
lake ontario open waters from hamlin beach to the saint lawrence
river-
1002 am edt sat may 9 2026

.this afternoon...southeast winds 5 to 10 knots. waves 2 feet or
less. 
.tonight...south winds 10 to 15 knots becoming west. a chance of
showers early, then showers late in the evening. a chance of
showers after midnight. waves 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 5 to 15 knots. waves 1 to 3 feet. 
.monday...west winds 5 to 15 knots becoming northwest. waves 1 to
3 feet. 
.tuesday...northwest winds 5 to 15 knots becoming southeast. a
chance of rain showers tuesday night. waves 2 feet or less. 
.wednesday...southeast winds 10 to 15 knots. showers likely.
waves 1 to 3 feet. 

$$

fzus61 kcle 091425
glfle 
expires:202605092015;;274983

open lake forecast for lake erie
national weather service cleveland oh
1025 am edt sat may 9 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...
low pressure 29.50 inches will move east through the upper great
lakes today, extending a cold front across the area this evening.
high pressure 30.20 inches will gradually build southeast across
the upper midwest into the great lakes sunday and persist through
monday night. another low pressure system 29.90 inches will move
east through the lower great lakes late tuesday into wednesday. 


lez165>167-092015-
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-
1025 am edt sat may 9 2026

.this afternoon...southwest winds 5 to 15 knots. showers and
thunderstorms likely late. waves 1 to 3 feet. 
.tonight...southwest winds 10 to 15 knots becoming north. showers
and thunderstorms likely early, then a slight chance of showers
and thunderstorms late in the evening. a slight chance of showers
after midnight. waves 1 to 3 feet. 
.sunday...north winds 10 knots or less becoming southwest. waves
2 feet or less. 
.sunday night...southwest winds 10 knots or less becoming north.
waves 2 feet or less. 
.monday...north winds 5 to 10 knots becoming northeast. waves
1 to 2 feet. 
.tuesday...southeast winds 10 knots or less becoming south and
increasing to 15 to 20 knots. showers tuesday night. waves 1 to
3 feet. 
.wednesday...southwest winds 15 to 20 knots becoming northwest
10 to 15 knots. a chance of showers. waves 2 to 4 feet subsiding
to 1 to 3 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 091425
glfle 
expires:202605092015;;274984

open lake forecast for lake erie
national weather service cleveland oh
1025 am edt sat may 9 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...
low pressure 29.50 inches will move east through the upper great
lakes today, extending a cold front across the area this evening.
high pressure 30.20 inches will gradually build southeast across
the upper midwest into the great lakes sunday and persist through
monday night. another low pressure system 29.90 inches will move
east through the lower great lakes late tuesday into wednesday. 


lez061-168-169-092015-
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-
1025 am edt sat may 9 2026

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

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 091425
glfle 
expires:202605092015;;274982

open lake forecast for lake erie
national weather service cleveland oh
1025 am edt sat may 9 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...
low pressure 29.50 inches will move east through the upper great
lakes today, extending a cold front across the area this evening.
high pressure 30.20 inches will gradually build southeast across
the upper midwest into the great lakes sunday and persist through
monday night. another low pressure system 29.90 inches will move
east through the lower great lakes late tuesday into wednesday. 


lez162>164-092015-
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-
1025 am edt sat may 9 2026

.this afternoon...southwest winds around 10 knots increasing to
15 to 20 knots. a chance of showers and thunderstorms early.
showers and thunderstorms likely late. waves 1 to
3 feet. 
.tonight...west winds 10 to 15 knots becoming north. a chance of
showers and thunderstorms early, then a slight chance of showers
and thunderstorms late in the evening. waves 1 to 3 feet. 
.sunday...north winds 5 to 10 knots becoming southwest. waves
1 foot or less. 
.sunday night...southwest winds 5 to 15 knots becoming north.
waves 2 feet or less. 
.monday...north winds 5 to 10 knots becoming east. waves 2 feet
or less. 
.tuesday...south winds 5 to 10 knots becoming southwest and
increasing to 15 to 25 knots. a chance of showers during the day,
then showers tuesday night. waves 2 feet or less building to 2 to
4 feet. 
.wednesday...southwest winds 15 to 25 knots becoming northwest. a
chance of showers. waves 2 to 4 feet subsiding to 1 to 3 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus63 kdtx 091339
glfsc 
expires:202605092145;;273279

lake st clair forecast
national weather service detroit/pontiac mi
939 am 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...southwest winds increase today ahead of a cold front,
which will trigger numerous showers and scattered thunderstorms
this afternoon. high pressure returns on sunday.


lcz460-092145-
lake st clair-
939 am edt sat may 9 2026

...small craft advisory in effect until 8 pm edt this evening...

.rest of today...southwest winds 10 to 15 knots increasing to 15 to
20 knots in the afternoon. partly sunny. a chance of showers and
thunderstorms early in the afternoon. light showers likely and a
chance of thunderstorms late in the afternoon. waves 1 to 3 feet.
.tonight...west winds 10 to 15 knots becoming north 5 to 10 knots
after midnight. partly cloudy. waves 2 feet or less.
.sunday...northwest winds 5 to 10 knots. sunny until late afternoon
becoming partly sunny. 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 becoming
partly cloudy by midnight becoming clear. waves 2 feet or less.
.monday...north winds 5 to 10 knots becoming northeast 10 to 15
knots in the evening. sunny in the morning becoming mostly clear.
waves 2 feet or less.
.tuesday...south winds 15 to 20 knots. showers. waves 2 feet or
less.
.wednesday...northwest winds 20 to 25 knots. mostly cloudy with
showers. waves 2 to 4 feet.

$$

fzus63 kdtx 091339
glflh 
expires:202605092145;;273281

open lake forecast for lake huron
national weather service detroit/pontiac mi
939 am 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...southwest winds increase today ahead of a cold front,
which will trigger numerous showers and scattered thunderstorms
this afternoon. high pressure returns on sunday.


lhz363-462>464-092145-
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-
939 am edt sat may 9 2026

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


$$

fzus63 kdtx 091339
glflh 
expires:202605092145;;273280

open lake forecast for lake huron
national weather service detroit/pontiac mi
939 am 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...southwest winds increase today ahead of a cold front,
which will trigger numerous showers and scattered thunderstorms
this afternoon. high pressure returns on sunday.


lhz361-362-092145-
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-
939 am edt sat may 9 2026

.rest of today...south winds 15 to 20 knots becoming southwest
10 to 15 knots in the afternoon. a chance of showers. waves 3 to
5 feet. 
.tonight...northwest winds 15 to 20 knots. waves 5 to 7 feet.
waves occasionally around 10 feet. 
.sunday...west winds 10 to 15 knots. waves 3 to 5 feet. 
.sunday night...west winds 10 to 15 knots becoming northwest
15 to 20 knots by midnight...then decreasing to 10 to 15 knots
after midnight. waves 3 to 5 feet. 
.monday...west winds 10 to 15 knots decreasing to 5 to 10 knots
late in the evening. waves 2 to 4 feet subsiding to 1 to 3 feet
late in the afternoon. 
.tuesday...light and variable winds becoming southeast 5 to
10 knots in the late morning and early afternoon...then
increasing to 15 to 20 knots . showers likely . waves 1 to 3 feet
building to 4 to 6 feet . waves occasionally around 8 feet. 
.wednesday...east winds 15 to 20 knots backing to the north in
the late morning and early afternoon...then becoming northwest
10 to 15 knots . a chance of showers until afternoon. waves 4 to
6 feet. 


$$

fzus63 kmkx 091417
glflm 
expires:202605092130;;274766

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
917 am 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...

low pressure around 29.5 inches over eastern lake superior will 
move east today. its trailing cold front will move across lake 
michigan late this morning into the afternoon. west to southwest 
winds ahead of the front will veer west to northwest with the 
frontal passage. gusty northwest winds are expected near the western
shoreline this afternoon. a backdoor cold front will then sag 
southward across the lake this evening through tonight, with a 
period of north to northeast winds behind it. 

high pressure around 30.3 inches is then expected to move from 
southern manitoba on sunday 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.


lmz080-669-671-673-675-777-779-870-872-874-876-878-092130-
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-
917 am cdt sat may 9 2026

sheboygan wi to pentwater mi south...

.rest of today...west winds 10 to 20 kt becoming northwest 15 to
25 kt. scattered sprinkles. waves 4 to 6 ft occasionally to 8 ft
subsiding to 1 to 3 ft. 
.tonight...northwest winds 10 to 20 kt becoming north 5 to 10 kt.
waves 1 to 3 ft. 
.sunday...north winds 5 to 10 kt veering to east 10 to 15 kt.
waves 1 to 2 ft. 
.sunday night...north winds 5 to 10 kt becoming northeast. waves
1 to 2 ft. 
.monday...northeast winds 10 to 15 kt increasing to 10 to 20 kt.
waves 1 to 2 ft. 
.monday night...east winds 10 to 15 kt becoming southeast. waves
1 to 2 ft. 
.tuesday...south winds 15 to 25 kt increasing to 30 kt. rain
showers. waves 4 to 6 ft occasionally to 8 ft building to 6 to
9 ft occasionally to 12 ft. 
.wednesday...northwest winds 15 to 25 kt becoming north to 30 kt.
waves 5 to 8 ft occasionally to 10 ft.  

$$

fzus63 kmkx 091417
glflm 
expires:202605092130;;274765

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
917 am 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...

low pressure around 29.5 inches over eastern lake superior will 
move east today. its trailing cold front will move across lake 
michigan late this morning into the afternoon. west to southwest 
winds ahead of the front will veer west to northwest with the 
frontal passage. gusty northwest winds are expected near the western
shoreline this afternoon. a backdoor cold front will then sag 
southward across the lake this evening through tonight, with a 
period of north to northeast winds behind it. 

high pressure around 30.3 inches is then expected to move from 
southern manitoba on sunday 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.


lmz261-362-364-366-563-565-567-868-092130-
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-
917 am cdt sat may 9 2026

sheboygan wi to pentwater mi north...

.rest of today...west winds 10 to 20 kt increasing to west
northwest 15 to 25 kt. scattered sprinkles late this morning, 
then scattered rain showers this afternoon. waves 4 to 6 ft 
occasionally to 8 ft subsiding to 3 to 5 ft. 
.tonight...north winds 15 to 25 kt diminishing to 10 to 20 kt
late in the evening, then becoming northwest 10 to 15 kt after
midnight becoming west late. waves 2 to 4 ft subsiding to 1 to
2 ft. 
.sunday...west winds 10 to 15 kt becoming northwest 10 to 20 kt.
waves 1 to 3 ft. 
.sunday night...north winds 10 to 20 kt diminishing to 10 to
15 kt. waves 1 to 3 ft. 
.monday...northwest winds 10 to 15 kt backing to southwest. waves
1 to 2 ft. 
.monday night...south winds 10 to 15 kt becoming southeast. waves
1 to 2 ft. 
.tuesday...south winds 15 to 25 kt becoming southeast to 30 kt.
rain showers. waves 4 to 6 ft occasionally to 8 ft building to
6 to 9 ft occasionally to 12 ft. 
.wednesday...north winds 15 to 25 kt increasing to 30 kt. waves
4 to 7 ft occasionally to 9 ft.  

$$

fzus63 kmqt 091402
glfls 
expires:202605092000;;273932

open lake forecast for lake superior
national weather service marquette mi
1001 am 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... 

a 29.5 inch low just east of lake superior pushes east over ontario 
through this afternoon before arriving over western quebec this 
evening. behind the low, ridging progressively builds over the lake 
as a 30.2 inch high pressure over the canadian prairies builds 
towards the great lakes this weekend. 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 on wednesday.



lsz267-092000-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
1001 am edt sat may 9 2026

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

$$

fzus63 kmqt 091402
glfls 
expires:202605092000;;273930

open lake forecast for lake superior
national weather service marquette mi
1001 am 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... 

a 29.5 inch low just east of lake superior pushes east over ontario 
through this afternoon before arriving over western quebec this 
evening. behind the low, ridging progressively builds over the lake 
as a 30.2 inch high pressure over the canadian prairies builds 
towards the great lakes this weekend. 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 on wednesday.



lsz265-092000-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
1001 am edt sat may 9 2026

.rest of today...northwest winds 15 to 25 knots. waves 1 to
3 feet building to 2 to 4 feet, then subsiding to 1 to 3 feet. 
.tonight...west winds 10 to 20 knots increasing to 15 to 25 knots
after midnight, then veering northwest late. waves subsiding to
calm to 2 feet. 
.sunday...northwest winds 15 to 25 knots diminishing to 10 to
20 knots late. waves building to 1 to 3 feet, then subsiding to
calm to 2 feet. 
.sunday night...northwest winds 10 to 20 knots. 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 1 to 3 feet. 
.tuesday...southeast winds 20 to 30 knots becoming northwest
10 to 20 knots. rain showers likely, then a chance of rain
showers. waves building to 4 to 7 feet occasionally to 9 feet,
then subsiding to 1 to 3 feet. 
.wednesday...northwest winds 10 to 20 knots diminishing to 5 to
15 knots. waves building to 2 to 4 feet, then subsiding to calm
to 2 feet. 

$$

fzus63 kmqt 091402
glfls 
expires:202605092000;;273929

open lake forecast for lake superior
national weather service marquette mi
1001 am 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... 

a 29.5 inch low just east of lake superior pushes east over ontario 
through this afternoon before arriving over western quebec this 
evening. behind the low, ridging progressively builds over the lake 
as a 30.2 inch high pressure over the canadian prairies builds 
towards the great lakes this weekend. 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 on wednesday.



lsz264-092000-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
1001 am edt sat may 9 2026

.rest of today...north winds 5 to 15 knots becoming northwest
10 to 20 knots in the afternoon, then becoming west 5 to 15 knots
late. sprinkles by mid afternoon. waves calm to 2 feet. 
.tonight...west winds 5 to 15 knots veering northwest after
midnight. waves building to 1 to 3 feet, then subsiding to calm
to 2 feet. 
.sunday...northwest winds 5 to 15 knots backing west late. waves
calm to 2 feet. 
.sunday night...west winds 5 to 15 knots veering northwest after
midnight. waves calm to 2 feet. 
.monday...northwest winds less than 10 knots becoming southwest
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 calm to 2 feet. 
.tuesday...southeast winds 15 to 25 knots becoming north 10 to
20 knots. a chance of rain showers. waves building to 3 to 6 feet
occasionally to 8 feet, then subsiding to 1 to 3 feet. 
.wednesday...northwest winds 5 to 15 knots backing west. waves
subsiding to calm to 2 feet. 

$$

fzus63 kmqt 091402
glfls 
expires:202605092000;;273928

open lake forecast for lake superior
national weather service marquette mi
1001 am 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... 

a 29.5 inch low just east of lake superior pushes east over ontario 
through this afternoon before arriving over western quebec this 
evening. behind the low, ridging progressively builds over the lake 
as a 30.2 inch high pressure over the canadian prairies builds 
towards the great lakes this weekend. 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 on wednesday.



lsz263-092000-
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 am edt sat may 9 2026

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

$$

fzus63 kmqt 091402
glfls 
expires:202605092000;;273927

open lake forecast for lake superior
national weather service marquette mi
1001 am 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... 

a 29.5 inch low just east of lake superior pushes east over ontario 
through this afternoon before arriving over western quebec this 
evening. behind the low, ridging progressively builds over the lake 
as a 30.2 inch high pressure over the canadian prairies builds 
towards the great lakes this weekend. 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 on wednesday.



lsz162-092000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1001 am edt sat may 9 2026 /901 am cdt sat may 9 2026/

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

$$

fzus63 kmqt 091402
glfls 
expires:202605092000;;273931

open lake forecast for lake superior
national weather service marquette mi
1001 am 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... 

a 29.5 inch low just east of lake superior pushes east over ontario 
through this afternoon before arriving over western quebec this 
evening. behind the low, ridging progressively builds over the lake 
as a 30.2 inch high pressure over the canadian prairies builds 
towards the great lakes this weekend. 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 on wednesday.



lsz266-092000-
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 am edt sat may 9 2026

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

$$