fzus61 kbuf 100802
glflo 
expires:202605101500;;315992

open lake forecast for lake ontario
national weather service buffalo ny
402 am edt sun may 10 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>065-101500-
lake ontario open waters from hamlin beach to the saint lawrence
river-
402 am edt sun may 10 2026

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

$$

fzus61 kbuf 100802
glflo 
expires:202605101500;;315991

open lake forecast for lake ontario
national weather service buffalo ny
402 am edt sun may 10 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.


loz062-101500-
lake ontario open waters from the niagara river to hamlin beach-
402 am edt sun may 10 2026

.today...west winds 10 to 15 knots. waves 1 to 2 feet. 
.tonight...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 and
increasing to 15 to 20 knots. rain showers tuesday night. waves
2 feet or less. 
.wednesday...south winds 15 to 20 knots becoming west 10 to
15 knots. showers. waves 1 to 3 feet. 
.thursday...northwest winds 5 to 10 knots. a chance of showers
during the day. waves 1 to 2 feet. 

$$

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.

$$

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;;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. 

$$

fzus63 kdtx 100755
glfsc 
expires:202605101600;;315640

lake st clair forecast
national weather service detroit/pontiac mi
355 am edt sun may 10 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 into the midwest
today and then into lower michigan monday. this leads to
decreasing wind field across the central great lakes through
tuesday. the next low pressure system moves in late tuesday
bringing stronger wind and the next pattern of showers and
thunderstorms.


lcz460-101600-
lake st clair-
355 am edt sun may 10 2026

.today...northwest winds 5 to 10 knots becoming west 10 to 15 knots
late in the afternoon. sunny until late afternoon becoming partly
sunny. waves 2 feet or less.
.tonight...west 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 10 to 15 knots becoming east 5 to 10
knots in the late evening and overnight. clear. waves 2 feet or
less.
.tuesday...southeast winds 5 to 10 knots becoming south 15 to 20
knots in the afternoon and evening. mostly sunny becoming partly
sunny in the afternoon. a chance of light showers in the afternoon.
light showers in the evening. waves 2 feet or less.
.wednesday...northwest winds 15 to 20 knots. partly cloudy. light
showers. waves 2 to 4 feet.
.thursday...northeast winds 15 to 20 knots. partly cloudy. waves 2
feet or less.

$$

fzus63 kdtx 100750
glflh 
expires:202605101600;;315556

open lake forecast for lake huron
national weather service detroit/pontiac mi
350 am edt sun may 10 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 into the midwest
today and then into lower michigan monday. this leads to
decreasing wind field across the central great lakes through
tuesday. the next low pressure system moves in late tuesday
bringing stronger wind and the next pattern of showers and
thunderstorms.


lhz361-362-101600-
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-
350 am edt sun may 10 2026

.today...west winds 10 to 15 knots. waves 3 to 5 feet. 
.tonight...northwest winds 10 to 15 knots. waves 3 to 5 feet. 
.monday...northwest winds 10 to 15 knots. 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...south winds 5 to 10 knots becoming southeast 20 to
25 knots with gusts to around 30 knots. showers. waves 2 feet or
less building to 6 to 9 feet. waves occasionally around 12 feet. 
.wednesday...north winds 15 to 20 knots backing to the northwest
. a chance of showers. 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 100750
glflh 
expires:202605101600;;315557

open lake forecast for lake huron
national weather service detroit/pontiac mi
350 am edt sun may 10 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 into the midwest
today and then into lower michigan monday. this leads to
decreasing wind field across the central great lakes through
tuesday. the next low pressure system moves in late tuesday
bringing stronger wind and the next pattern of showers and
thunderstorms.


lhz363-462>464-101600-
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-
350 am edt sun may 10 2026

.today...west winds 10 to 15 knots decreasing to 5 to 10 knots
late in the morning...then backing to the southwest early in the
afternoon veering to the southwest 5 to 10 knots late in the
afternoon. waves 3 to 5 feet subsiding to 1 to 3 feet in the
afternoon. 
.tonight...north winds 5 to 10 knots backing to the northwest
early in the morning. 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...south winds 5 to 10 knots 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...south 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...northwest winds 15 to 20 knots becoming light and
variable. waves 3 to 5 feet subsiding to 1 to 3 feet by midnight.


$$

fzus63 kmkx 100801
glflm 
expires:202605101530;;315956

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
301 am cdt sun may 10 2026

for waters beyond five nautical miles of shore on lake michigan.

waves are provided as a range of significant wave heights, which
is the average of the highest 1/3 of the wave, along with the
average height of the highest 10% of the waves which will
occasionally be encountered.

.synopsis...

high pressure around 30.3 inches is expected to move from 
southern manitoba to over lake michigan today into monday. 
relatively light and variable winds are expected during most of 
this period. one exception will be a backdoor cold front that is 
expected to shift southward across the lake late this afternoon
and this evening, bringing briefly gusty northeast winds behind 
it before weakening.

low pressure around 29.7 inches should then move gradually east
southeast across or north of lake superior tuesday into tuesday
night. the low will bring a cold front southeast through the
region. gusty south to southeast winds are expected ahead of the 
front tuesday, veering west to northwest behind it and remaining
gusty for tuesday night into wednesday. 

high pressure around 30.2 inches should then move southeast into
the region wednesday night into thursday, bringing lighter winds.


lmz080-669-671-673-675-777-779-870-872-874-876-878-101530-
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-
301 am cdt sun may 10 2026

sheboygan wi to pentwater mi south...

.today...west winds 10 to 15 kt backing to south 10 to 20 kt.
waves 1 to 3 ft subsiding to 1 to 2 ft. 
.tonight...east winds 10 to 20 kt becoming northeast 10 to 15 kt.
waves 1 to 2 ft. 
.monday...northeast winds 5 to 10 kt increasing to 10 to 20 kt.
waves 1 to 3 ft. 
.monday night...east winds 10 to 15 kt becoming southeast. waves
1 to 3 ft. 
.tuesday...south winds to 30 kt. rain showers in the morning,
then rain showers likely in the afternoon. waves 5 to 8 ft
occasionally to 10 ft building to 8 to 11 ft occasionally to
14 ft. 
.tuesday night...southwest winds to 30 kt becoming west 15 to
25 kt. chance of rain showers. waves 7 to 10 ft occasionally to
13 ft subsiding to 4 to 6 ft occasionally to 8 ft. 
.wednesday...northwest winds to 30 kt becoming north. waves 5 to
8 ft occasionally to 10 ft. 
.thursday...north winds 10 to 15 kt backing to southwest 10 to
20 kt. waves 2 to 4 ft subsiding to 1 to 2 ft.  

$$

fzus63 kmkx 100801
glflm 
expires:202605101530;;315955

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
301 am cdt sun may 10 2026

for waters beyond five nautical miles of shore on lake michigan.

waves are provided as a range of significant wave heights, which
is the average of the highest 1/3 of the wave, along with the
average height of the highest 10% of the waves which will
occasionally be encountered.

.synopsis...

high pressure around 30.3 inches is expected to move from 
southern manitoba to over lake michigan today into monday. 
relatively light and variable winds are expected during most of 
this period. one exception will be a backdoor cold front that is 
expected to shift southward across the lake late this afternoon
and this evening, bringing briefly gusty northeast winds behind 
it before weakening.

low pressure around 29.7 inches should then move gradually east
southeast across or north of lake superior tuesday into tuesday
night. the low will bring a cold front southeast through the
region. gusty south to southeast winds are expected ahead of the 
front tuesday, veering west to northwest behind it and remaining
gusty for tuesday night into wednesday. 

high pressure around 30.2 inches should then move southeast into
the region wednesday night into thursday, bringing lighter winds.


lmz261-362-364-366-563-565-567-868-101530-
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-
301 am cdt sun may 10 2026

sheboygan wi to pentwater mi north...

.today...west winds 10 to 20 kt. slight chance of rain showers
this afternoon. waves 2 to 4 ft subsiding to 1 to 3 ft. 
.tonight...north winds 10 to 20 kt becoming northwest 10 to
15 kt. waves 1 to 3 ft subsiding to 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 3 ft. 
.tuesday...south winds to 30 kt. rain showers. waves 5 to 8 ft
occasionally to 10 ft building to 8 to 11 ft occasionally to
14 ft. 
.tuesday night...south winds to 30 kt veering to northwest 15 to
25 kt. chance of rain showers. waves 7 to 10 ft occasionally to
13 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...northwest winds 10 to 15 kt backing to southwest.
waves 1 to 3 ft.  

$$

fzus63 kmqt 100801
glfls 
expires:202605102000;;315952

open lake forecast for lake superior
national weather service marquette mi
401 am edt sun may 10 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 continue to rise over lake superior today as a 30.2 inch 
high pressure over the canadian prairies expands eastward. the high 
shifts southeast into the upper great lakes at 30.3 inches tonight 
and monday morning. ridging from the high persists at around 30.2 
inches over lake superior through monday evening before eventually 
being replaced by a 29.7 inch clipper descending over western lake 
superior on tuesday. as the clipper continues eastward tuesday night 
into wednesday, 30.1 inch high pressure ridging moves back over lake 
superior late in the day on wednesday. this ridging is pressed 
southeast to the lower great lakes on thursday while a 29.4 inch low 
emanates off the northern rockies.



lsz266-102000-
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 am edt sun may 10 2026

.early this morning...northwest winds 15 to 25 knots. waves 2 to
4 feet. 
.today...northwest winds 15 to 25 knots. waves subsiding to 1 to
3 feet, then building to 2 to 4 feet. 
.tonight...northwest winds 10 to 20 knots veering north late.
waves subsiding to 1 to 3 feet. 
.monday...northwest winds 5 to 15 knots becoming east less than
10 knots late. waves subsiding to calm to 2 feet. 
.monday night...southeast winds 5 to 15 knots becoming south
15 to 25 knots after midnight. waves building to 3 to 5 feet
occasionally to 7 feet. 
.tuesday...south winds 20 to 30 knots backing southeast by mid
afternoon. rain showers. waves building to 5 to 9 feet
occasionally to 11 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 3 to 5 feet occasionally to 7 feet, then building to
5 to 8 feet occasionally to 10 feet. 
.wednesday...northwest gales to 35 knots diminishing to 15 to
25 knots. waves building to 7 to 10 feet occasionally to 13 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 6 feet
occasionally to 8 feet. 

$$

fzus63 kmqt 100801
glfls 
expires:202605102000;;315953

open lake forecast for lake superior
national weather service marquette mi
401 am edt sun may 10 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 continue to rise over lake superior today as a 30.2 inch 
high pressure over the canadian prairies expands eastward. the high 
shifts southeast into the upper great lakes at 30.3 inches tonight 
and monday morning. ridging from the high persists at around 30.2 
inches over lake superior through monday evening before eventually 
being replaced by a 29.7 inch clipper descending over western lake 
superior on tuesday. as the clipper continues eastward tuesday night 
into wednesday, 30.1 inch high pressure ridging moves back over lake 
superior late in the day on wednesday. this ridging is pressed 
southeast to the lower great lakes on thursday while a 29.4 inch low 
emanates off the northern rockies.



lsz267-102000-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
401 am edt sun may 10 2026

.early this morning...northwest winds 10 to 20 knots. waves 2 to
4 feet. 
.today...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. 
.tonight...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 backing west late. waves
subsiding to calm to 2 feet. 
.monday night...southeast winds 5 to 15 knots. waves calm to
2 feet. 
.tuesday...southeast winds 15 to 25 knots. a chance of rain
showers through early afternoon, then rain showers by mid
afternoon. waves building to 3 to 6 feet occasionally to 8 feet. 
.tuesday night...southeast winds 15 to 25 knots backing north
after midnight. rain showers likely through midnight, then a
chance of rain showers after midnight. waves subsiding to 1 to
3 feet, then building to 3 to 5 feet occasionally to 7 feet. 
.wednesday...northwest winds 20 to 30 knots diminishing to 15 to
25 knots. waves building to 4 to 7 feet occasionally to 9 feet,
then subsiding to 1 to 3 feet. 
.thursday...south winds 5 to 15 knots increasing to 15 to
25 knots. waves subsiding to calm to 2 feet, then building to
2 to 4 feet. 

$$

fzus63 kmqt 100801
glfls 
expires:202605102000;;315948

open lake forecast for lake superior
national weather service marquette mi
401 am edt sun may 10 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 continue to rise over lake superior today as a 30.2 inch 
high pressure over the canadian prairies expands eastward. the high 
shifts southeast into the upper great lakes at 30.3 inches tonight 
and monday morning. ridging from the high persists at around 30.2 
inches over lake superior through monday evening before eventually 
being replaced by a 29.7 inch clipper descending over western lake 
superior on tuesday. as the clipper continues eastward tuesday night 
into wednesday, 30.1 inch high pressure ridging moves back over lake 
superior late in the day on wednesday. this ridging is pressed 
southeast to the lower great lakes on thursday while a 29.4 inch low 
emanates off the northern rockies.



lsz162-102000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
401 am edt sun may 10 2026 /301 am cdt sun may 10 2026/

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

$$

fzus63 kmqt 100801
glfls 
expires:202605102000;;315949

open lake forecast for lake superior
national weather service marquette mi
401 am edt sun may 10 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 continue to rise over lake superior today as a 30.2 inch 
high pressure over the canadian prairies expands eastward. the high 
shifts southeast into the upper great lakes at 30.3 inches tonight 
and monday morning. ridging from the high persists at around 30.2 
inches over lake superior through monday evening before eventually 
being replaced by a 29.7 inch clipper descending over western lake 
superior on tuesday. as the clipper continues eastward tuesday night 
into wednesday, 30.1 inch high pressure ridging moves back over lake 
superior late in the day on wednesday. this ridging is pressed 
southeast to the lower great lakes on thursday while a 29.4 inch low 
emanates off the northern rockies.



lsz263-102000-
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 am edt sun may 10 2026

.early this morning...northwest winds 5 to 15 knots. waves 1 to
3 feet. 
.today...northwest winds 5 to 15 knots backing west in the
afternoon. a chance of rain showers by mid afternoon. waves
subsiding to calm to 2 feet. 
.tonight...west winds 5 to 15 knots veering north after midnight,
then diminishing to less than 10 knots late. waves calm to
2 feet. 
.monday...northwest winds less than 10 knots becoming south 5 to
15 knots in the afternoon. waves calm to 2 feet. 
.monday night...southeast winds 10 to 20 knots. a chance of rain
showers, possibly mixed with snow after midnight. waves building
to 2 to 4 feet. 
.tuesday...southeast winds 10 to 20 knots veering west by mid
afternoon. rain showers. waves building to 3 to 6 feet
occasionally to 8 feet. 
.tuesday night...northwest winds 10 to 20 knots veering north
after midnight. waves subsiding to 2 to 4 feet, then building to
3 to 5 feet occasionally to 7 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 15 to
25 knots. a chance of rain showers. waves building to 3 to 5 feet
occasionally to 7 feet, then subsiding to 2 to 4 feet. 

$$

fzus63 kmqt 100801
glfls 
expires:202605102000;;315950

open lake forecast for lake superior
national weather service marquette mi
401 am edt sun may 10 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 continue to rise over lake superior today as a 30.2 inch 
high pressure over the canadian prairies expands eastward. the high 
shifts southeast into the upper great lakes at 30.3 inches tonight 
and monday morning. ridging from the high persists at around 30.2 
inches over lake superior through monday evening before eventually 
being replaced by a 29.7 inch clipper descending over western lake 
superior on tuesday. as the clipper continues eastward tuesday night 
into wednesday, 30.1 inch high pressure ridging moves back over lake 
superior late in the day on wednesday. this ridging is pressed 
southeast to the lower great lakes on thursday while a 29.4 inch low 
emanates off the northern rockies.



lsz264-102000-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
401 am edt sun may 10 2026

.early this morning...northwest winds 5 to 15 knots. waves 1 to
3 feet. 
.today...northwest winds 5 to 15 knots backing west late. a
chance of rain showers. a chance of snow showers by mid
afternoon. waves subsiding to calm to 2 feet. 
.tonight...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 in the afternoon. waves calm to 2 feet. 
.monday night...southeast winds 10 to 20 knots. waves building to
2 to 4 feet. 
.tuesday...southeast winds 20 to 30 knots. rain showers. waves
building to 5 to 9 feet occasionally to 11 feet. 
.tuesday night...north winds 10 to 20 knots increasing to 15 to
25 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 10 to 20 knots increasing to 15 to
25 knots. a chance of rain showers. waves building to 3 to 5 feet
occasionally to 7 feet. 

$$

fzus63 kmqt 100801
glfls 
expires:202605102000;;315951

open lake forecast for lake superior
national weather service marquette mi
401 am edt sun may 10 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 continue to rise over lake superior today as a 30.2 inch 
high pressure over the canadian prairies expands eastward. the high 
shifts southeast into the upper great lakes at 30.3 inches tonight 
and monday morning. ridging from the high persists at around 30.2 
inches over lake superior through monday evening before eventually 
being replaced by a 29.7 inch clipper descending over western lake 
superior on tuesday. as the clipper continues eastward tuesday night 
into wednesday, 30.1 inch high pressure ridging moves back over lake 
superior late in the day on wednesday. this ridging is pressed 
southeast to the lower great lakes on thursday while a 29.4 inch low 
emanates off the northern rockies.



lsz265-102000-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
401 am edt sun may 10 2026

.early this morning...northwest winds 10 to 20 knots. waves calm
to 2 feet. 
.today...northwest winds 10 to 20 knots. waves calm to 2 feet. 
.tonight...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 in the
afternoon. waves calm to 2 feet. 
.monday night...southeast winds 10 to 20 knots increasing to
15 to 25 knots after midnight. waves building to 3 to 5 feet
occasionally to 7 feet. 
.tuesday...southeast winds 20 to 30 knots. rain showers. waves
building to 6 to 9 feet occasionally to 11 feet, then subsiding
to 4 to 7 feet occasionally to 9 feet. 
.tuesday night...west winds 15 to 25 knots becoming northwest
20 to 30 knots after midnight. a chance of rain showers. waves
subsiding to 3 to 5 feet occasionally to 7 feet, then building to
4 to 7 feet occasionally to 9 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 6 feet
occasionally to 8 feet. 

$$