fzus61 kbuf 031402
glflo 
expires:202605032100;;948363

open lake forecast for lake ontario
national weather service buffalo ny
1002 am edt sun may 3 2026

for waters beyond five nautical miles of shore on lake ontario

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

.synopsis...a 29.7 inch low well southeast of maine will deepen to 
28.8 inches as it tracks to atlantic canada through tonight, while a 
30.2 inch high centered over the tennessee valley slides east and 
off the carolina coast. a 29.1 inch low over western ontario 
province monday will then weaken to 29.3 inches as it moves to 
northern quebec through tuesday, with its trailing wavy cold front 
slowly crossing the lake tuesday, then drifting across new england 
through wednesday.


loz062-032100-
lake ontario open waters from the niagara river to hamlin beach-
1002 am edt sun may 3 2026

.this afternoon...southwest winds 5 to 15 knots. a chance of
showers late. waves 1 to 3 feet. 
.tonight...southwest winds 15 to 20 knots. a chance of showers in
the evening. waves 2 to 4 feet building to 3 to 6 feet. 
.monday...southwest winds 15 to 20 knots. waves 3 to 5 feet. 
.monday night...southwest winds 15 to 20 knots. a chance of
showers overnight. waves 3 to 5 feet. 
.tuesday...southwest winds 15 to 20 knots becoming northwest
10 to 15 knots. showers. waves 3 to 5 feet subsiding to 1 to
2 feet. 
.wednesday...northwest winds 10 knots or less. showers during the
day. waves 1 foot or less. 
.thursday...northwest winds 10 knots or less becoming west 10 to
15 knots. a chance of showers. waves 2 feet or less. 

$$

fzus61 kbuf 031402
glflo 
expires:202605032100;;948364

open lake forecast for lake ontario
national weather service buffalo ny
1002 am edt sun may 3 2026

for waters beyond five nautical miles of shore on lake ontario

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

.synopsis...a 29.7 inch low well southeast of maine will deepen to 
28.8 inches as it tracks to atlantic canada through tonight, while a 
30.2 inch high centered over the tennessee valley slides east and 
off the carolina coast. a 29.1 inch low over western ontario 
province monday will then weaken to 29.3 inches as it moves to 
northern quebec through tuesday, with its trailing wavy cold front 
slowly crossing the lake tuesday, then drifting across new england 
through wednesday.


loz063>065-032100-
lake ontario open waters from hamlin beach to the saint lawrence
river-
1002 am edt sun may 3 2026

.this afternoon...west winds 5 to 15 knots becoming southwest.
waves 1 to 2 feet. 
.tonight...southwest winds 10 to 15 knots increasing to 15 to
20 knots. a chance of showers. waves 1 to 3 feet building to 3 to
5 feet. 
.monday...southwest winds 15 to 20 knots diminishing to 10 to
15 knots. a chance of showers in the morning. waves 3 to 5 feet
subsiding to 1 to 3 feet. 
.monday night...south winds 10 to 15 knots increasing to 15 to
20 knots. waves 1 to 3 feet building to 2 to 4 feet. 
.tuesday...southwest winds 15 to 20 knots becoming west 10 to
15 knots. showers likely with a chance of thunderstorms during
the day, then showers tuesday night. waves 2 to 4 feet subsiding
to 1 to 3 feet. 
.wednesday...west winds 5 to 10 knots. showers during the day,
then a chance of showers wednesday night. waves 2 feet or less. 
.thursday...west winds 5 to 15 knots increasing to 15 to
20 knots. a chance of showers. waves 1 to 3 feet building to 2 to
4 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 031336
glfle 
expires:202605032015;;947436

open lake forecast for lake erie
national weather service cleveland oh
936 am edt sun may 3 2026

for waters beyond five nautical miles of shore on lake erie

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

.synopsis...
high pressure of 30.10 inches over the ohio valley moves south 
while a trough of 29.50 inches moves into the upper great lakes.  
this trough will settle south across the central great lakes 
monday into tuesday, with a cold front settling south of lake erie
tuesday night. high pressure of 30.00 inches builds over lake 
erie on wednesday followed by a trough of 29.80 inches moving over
the lake on thursday.


lez061-166>169-032015-
ripley to buffalo ny extending from 5nm 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-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-
936 am edt sun may 3 2026

.this afternoon...southwest winds 15 to 25 knots. a slight chance
of showers late. waves 2 to 4 feet building to 3 to 5 feet. 
.tonight...southwest winds 15 to 25 knots. a slight chance of
showers. waves 3 to 6 feet. 
.monday...southwest winds 15 to 20 knots diminishing to 10 to
15 knots. waves 3 to 5 feet subsiding to 2 to 4 feet. 
.monday night...southwest winds 10 to 15 knots increasing to
15 to 20 knots. showers likely in the evening, then a chance of
showers overnight. waves 2 to 4 feet building to 3 to 5 feet. 
.tuesday...southwest winds 15 to 20 knots becoming north 10 to
15 knots. showers. waves 3 to 5 feet subsiding to 1 to 3 feet. 
.wednesday...north winds 10 knots or less. a chance of showers
during the day. waves 1 to 3 feet. 
.thursday...northeast winds 5 to 15 knots becoming west. a chance
of showers during the day. waves 1 to 3 feet. 

$$

fzus61 kcle 031336
glfle 
expires:202605032015;;947435

open lake forecast for lake erie
national weather service cleveland oh
936 am edt sun may 3 2026

for waters beyond five nautical miles of shore on lake erie

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

.synopsis...
high pressure of 30.10 inches over the ohio valley moves south 
while a trough of 29.50 inches moves into the upper great lakes.  
this trough will settle south across the central great lakes 
monday into tuesday, with a cold front settling south of lake erie
tuesday night. high pressure of 30.00 inches builds over lake 
erie on wednesday followed by a trough of 29.80 inches moving over
the lake on thursday.


lez162>165-032015-
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-
vermilion to avon point oh beyond 5 nm off shoreline to us-
canadian border-
936 am edt sun may 3 2026

.this afternoon...southwest winds 15 to 25 knots. waves 2 to 4 
feet. 
.tonight...southwest winds 15 to 25 knots. a slight chance of
showers through the early overnight. waves 2 to 4 feet building
to 3 to 5 feet. 
.monday...southwest winds 15 to 20 knots diminishing to 10 to
15 knots. waves 3 to 5 feet subsiding to 1 to 3 feet. 
.monday night...southwest winds 10 to 15 knots increasing to
15 to 20 knots. a chance of showers. waves 1 to 3 feet building
to 3 to 5 feet. 
.tuesday...southwest winds 10 to 15 knots becoming north.
showers. waves 3 to 5 feet subsiding to 1 to 3 feet. 
.wednesday...north winds 5 to 15 knots. waves 2 feet or less. 
.thursday...north winds 10 to 15 knots becoming west. a chance of
showers during the day. waves 1 to 3 feet. 

$$

fzus63 kdtx 031342
glflh 
expires:202605032145;;947645

open lake forecast for lake huron
national weather service detroit/pontiac mi
942 am edt sun may 3 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, with gusts of 20 to 30
knots this afternoon and persist through tomorrow before a cold
front veers wind direction northwest by tuesday.


lhz362-363-032145-
lake huron from presque isle light to sturgeon point mi beyond
5nm off shore-
lake huron from sturgeon point to alabaster mi beyond 5nm off
shore-
942 am edt sun may 3 2026

.rest of today...south winds 10 to 20 knots with gusts to 25
knots in the afternoon. a chance of showers. waves 3 to 5 feet. 
.tonight...southwest winds 15 to 25 knots decreasing to 5 to 10 
knots. waves 3 to 5 feet. 
.monday...southwest winds 10 to 15 knots becoming south 15 to
20 knots in the late morning and afternoon. waves 1 to 3 feet
building to 4 to 6 feet in the late morning and afternoon. waves
occasionally around 8 feet. 
.monday night...south winds 15 to 20 knots becoming west 10 to
15 knots in the late evening and overnight. a chance of showers.
waves 4 to 6 feet. waves occasionally around 8 feet. 
.tuesday...north winds 5 to 10 knots. a chance of showers. waves
2 to 4 feet. 
.wednesday...north winds 5 to 10 knots early in the morning
backing to the northwest...then veering to the east early in the
evening becoming light and variable. waves 1 to 3 feet. 
.thursday...north winds 5 to 10 knots backing to the west by
midnight. waves 1 to 3 feet building to 3 to 5 feet . 


$$

fzus63 kdtx 031342
glflh 
expires:202605032145;;947644

open lake forecast for lake huron
national weather service detroit/pontiac mi
942 am edt sun may 3 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, with gusts of 20 to 30
knots this afternoon and persist through tomorrow before a cold
front veers wind direction northwest by tuesday.


lhz361-032145-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
942 am edt sun may 3 2026

.rest of today...south winds 10 to 15 knots. a chance of showers.
waves 1 to 3 feet. 
.tonight...southwest winds around 15 knots decreasing to 5 to 10 
knots after midnight. a chance of showers in the evening. waves 1 
to 3 feet. 
.monday...south winds 10 to 15 knots increasing to 15 to 20 knots
in the late morning and afternoon. a chance of showers in the
afternoon. waves 1 to 3 feet building to 3 to 5 feet in the late
morning and afternoon. 
.monday night...southwest winds 15 to 20 knots becoming west
10 to 15 knots in the late evening and overnight. a chance of
showers in the evening. waves 3 to 5 feet subsiding to 1 to
3 feet after midnight. 
.tuesday...west winds 10 to 15 knots becoming northwest 5 to
10 knots late in the evening. waves 2 to 4 feet. 
.wednesday...west winds 5 to 10 knots increasing to 10 to
15 knots until early evening...then becoming northwest 5 to
10 knots by midnight. waves 1 to 3 feet. 
.thursday...northwest winds 5 to 10 knots becoming west 10 to
15 knots . waves 2 feet or less building to 3 to 5 feet . 


$$

fzus63 kdtx 031342
glfsc 
expires:202605032145;;947649

lake st clair forecast
national weather service detroit/pontiac mi
942 am edt sun may 3 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, with gusts of 20 to 30
knots this afternoon and persist through tomorrow before a cold
front veers wind direction northwest by tuesday.


lcz460-032145-
lake st clair-
942 am edt sun may 3 2026

...small craft advisory in effect through this evening...

.today...southwest winds 15 to 20 knots with gusts to 30 knots in
the afternoon. partly sunny. waves 1 to 3 feet.
.tonight...southwest winds 15 to 20 knots. gusts to 30 knots early
in the evening. partly cloudy. a chance of light showers late in the
evening. waves 1 to 3 feet.
.monday...southwest winds 10 to 15 knots increasing to 15 to 20
knots in the late morning and afternoon. mostly sunny. waves 1 to 3
feet.
.monday night...southwest winds 15 to 20 knots. partly cloudy. a
chance of light showers. waves 1 to 3 feet.
.tuesday...southwest winds 10 to 15 knots veering to the northwest
in the afternoon and evening. light showers likely in the morning.
rain showers in the afternoon and evening. waves 2 feet or less.
.wednesday...northeast winds 10 to 15 knots. mostly cloudy with
light showers likely. waves 2 feet or less.
.thursday...northwest winds 5 to 10 knots. mostly cloudy. a chance
of showers. waves 2 feet or less.

$$

fzus63 kdtx 031342
glflh 
expires:202605032145;;947646

open lake forecast for lake huron
national weather service detroit/pontiac mi
942 am edt sun may 3 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, with gusts of 20 to 30
knots this afternoon and persist through tomorrow before a cold
front veers wind direction northwest by tuesday.


lhz462>464-032145-
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-
942 am edt sun may 3 2026

.rest of today...south winds 10 to 20 knots. waves 2 to 4 feet. 
.tonight...southwest winds 15 to 20 knots decreasing to 10 to
15 knots after midnight. a chance of showers in the evening.
waves 3 to 5 feet. 
.monday...southwest winds 10 to 15 knots becoming south 15 to
20 knots early in the afternoon. waves 1 to 3 feet building to
2 to 4 feet in the late morning and afternoon. 
.monday night...south winds 15 to 20 knots becoming southwest
10 to 15 knots in the late evening and overnight. a chance of
showers. waves 3 to 5 feet. 
.tuesday...north winds 5 to 10 knots. a chance of showers. waves
1 to 3 feet. 
.wednesday...north winds 5 to 10 knots becoming light and
variable. waves 2 feet or less. 
.thursday...north winds 5 to 10 knots. waves 2 feet or less. 


$$

fzus63 kmkx 031417
glflm 
expires:202605032115;;949175

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
917 am cdt sun may 3 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...

no major changes to the going forecast this morning.

southerly winds will increase this morning, as low pressure 
around 29.7 inches approaches the lake. the low pressure system 
will drag a cold front southeast over the region later this 
morning into late this afternoon. southwest to south winds may 
approach gale force at times over the southern half but with the 
cooler lake conditions winds should largely stay below gale force.
winds will become westerly for a brief period behind the front
later tonight, before returning to southwesterly and becoming 
breezy again on monday ahead of another stronger low around 29.2 
inches and another cold front. light and more variable winds
should be expected to return to the region through at least the
middle of the week given weak high pressure over the region.


lmz080-669-671-673-675-777-779-870-872-874-876-878-032115-
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 sun may 3 2026

sheboygan wi to pentwater mi south...

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

$$

fzus63 kmkx 031417
glflm 
expires:202605032115;;949174

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
917 am cdt sun may 3 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...

no major changes to the going forecast this morning.

southerly winds will increase this morning, as low pressure 
around 29.7 inches approaches the lake. the low pressure system 
will drag a cold front southeast over the region later this 
morning into late this afternoon. southwest to south winds may 
approach gale force at times over the southern half but with the 
cooler lake conditions winds should largely stay below gale force.
winds will become westerly for a brief period behind the front
later tonight, before returning to southwesterly and becoming 
breezy again on monday ahead of another stronger low around 29.2 
inches and another cold front. light and more variable winds
should be expected to return to the region through at least the
middle of the week given weak high pressure over the region.


lmz261-362-364-366-563-565-567-868-032115-
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 sun may 3 2026

sheboygan wi to pentwater mi north...

.rest of today...southwest winds 15 to 25 kt increasing to 30 kt.
chance of rain showers. waves 4 to 7 ft occasionally to 9 ft. 
.tonight...southwest winds to 30 kt becoming south 10 to 20 kt.
waves 4 to 7 ft occasionally to 9 ft subsiding to 3 to 5 ft. 
.monday...south winds to 30 kt becoming southwest. chance of rain
showers in the afternoon. waves 4 to 6 ft occasionally to 8 ft
building to 5 to 8 ft occasionally to 10 ft. 
.monday night...west winds 10 to 20 kt becoming northwest 10 to
15 kt. chance of rain showers. waves 4 to 6 ft occasionally to
8 ft subsiding to 3 to 5 ft. 
.tuesday...northwest winds 10 to 20 kt becoming west. waves 1 to
3 ft. 
.tuesday night...northwest winds 10 to 15 kt becoming north 5 to
10 kt. waves 1 to 2 ft. 
.wednesday...northwest winds 10 to 15 kt backing to southwest
10 to 20 kt. waves 1 to 2 ft. 
.thursday...northwest winds 10 to 15 kt becoming southwest 10 to
20 kt. waves 1 to 2 ft.  

$$

fzus63 kmqt 031402
glfls 
expires:202605032000;;948275

open lake forecast for lake superior
national weather service marquette mi
1001 am edt sun may 3 2026

for waters beyond 5 nautical miles of shore on lake superior.

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

.synopsis...

a 29.6 inch trough moves over lake superior today before lifting 
into northern ontario. a deepening 29.3 inch low digs over the 
canadian prairies tonight and then deepens to 29.1 inches over 
northern ontario on monday. the low lifts into james bay by monday 
evening as 30.1 inch ridging builds just to the east of the canadian 
rockies. as the high pressure ridging shifts to the canadian 
prairies tuesday and wednesday, the now-29.2 inch low continues 
lifting into far northern quebec. thursday into friday, the weather 
pattern becomes nebulous as major pressure systems remain far away 
from the upper great lakes.



lsz264-032000-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
1001 am edt sun may 3 2026

.rest of today...west winds 5 to 15 knots increasing to 10 to
20 knots late. waves calm to 2 feet building to 2 to 4 feet. 
.tonight...southwest winds 10 to 20 knots becoming south 15 to
25 knots after midnight, then becoming southwest 20 to 30 knots
late. a chance of rain showers. waves building to 4 to 7 feet
occasionally to 9 feet. 
.monday...southwest winds 20 to 30 knots veering west in the
afternoon. a chance of rain showers through early afternoon.
waves building to 4 to 8 feet occasionally to 10 feet. 
.monday night...west winds 15 to 25 knots veering northwest after
midnight. waves subsiding to 2 to 4 feet. 
.tuesday...west winds 10 to 20 knots. waves subsiding to 1 to
3 feet. 
.tuesday night...west winds 5 to 15 knots veering northwest after
midnight. waves subsiding to calm to 2 feet. 
.wednesday...west winds 5 to 15 knots. waves calm to 2 feet. 
.thursday...west winds 5 to 15 knots. waves calm to 2 feet. 

$$

fzus63 kmqt 031402
glfls 
expires:202605032000;;948276

open lake forecast for lake superior
national weather service marquette mi
1001 am edt sun may 3 2026

for waters beyond 5 nautical miles of shore on lake superior.

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

.synopsis...

a 29.6 inch trough moves over lake superior today before lifting 
into northern ontario. a deepening 29.3 inch low digs over the 
canadian prairies tonight and then deepens to 29.1 inches over 
northern ontario on monday. the low lifts into james bay by monday 
evening as 30.1 inch ridging builds just to the east of the canadian 
rockies. as the high pressure ridging shifts to the canadian 
prairies tuesday and wednesday, the now-29.2 inch low continues 
lifting into far northern quebec. thursday into friday, the weather 
pattern becomes nebulous as major pressure systems remain far away 
from the upper great lakes.



lsz265-032000-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
1001 am edt sun may 3 2026

.rest of today...southwest winds 10 to 20 knots becoming west
15 to 25 knots in the afternoon. waves calm to 2 feet. 
.tonight...southwest winds 10 to 20 knots becoming south 15 to
25 knots after midnight, then becoming southwest 20 to 30 knots
late. a slight chance of rain showers after midnight. waves
building to 2 to 4 feet. 
.monday...southwest winds to 30 knots with a few gale force gusts
to 35 knots possible veering west in the afternoon. a chance of
rain showers. waves building to 3 to 6 feet occasionally to
8 feet. 
.monday night...west winds 20 to 30 knots. waves subsiding to
2 to 4 feet. 
.tuesday...west winds 15 to 25 knots. waves subsiding to calm to
2 feet. 
.tuesday night...west winds 10 to 20 knots. waves calm to 2 feet.
.wednesday...west winds 10 to 20 knots becoming southwest 5 to
15 knots. waves calm to 2 feet. 
.thursday...northwest winds 5 to 15 knots backing west. waves
calm to 2 feet. 

$$

fzus63 kmqt 031402
glfls 
expires:202605032000;;948277

open lake forecast for lake superior
national weather service marquette mi
1001 am edt sun may 3 2026

for waters beyond 5 nautical miles of shore on lake superior.

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

.synopsis...

a 29.6 inch trough moves over lake superior today before lifting 
into northern ontario. a deepening 29.3 inch low digs over the 
canadian prairies tonight and then deepens to 29.1 inches over 
northern ontario on monday. the low lifts into james bay by monday 
evening as 30.1 inch ridging builds just to the east of the canadian 
rockies. as the high pressure ridging shifts to the canadian 
prairies tuesday and wednesday, the now-29.2 inch low continues 
lifting into far northern quebec. thursday into friday, the weather 
pattern becomes nebulous as major pressure systems remain far away 
from the upper great lakes.



lsz266-032000-
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 sun may 3 2026

.rest of today...south winds 10 to 20 knots veering west in the
afternoon. a slight chance of rain showers. waves calm to 2 feet.
.tonight...southwest winds 10 to 20 knots backing south after
midnight, then increasing to 20 to 30 knots late. a slight chance
of rain showers after midnight. waves building to 3 to 6 feet
occasionally to 8 feet. 
.monday...southwest winds to 30 knots with a few gale force gusts
to 35 knots possible becoming west 20 to 30 knots in the
afternoon. a chance of rain showers. waves building to 4 to
7 feet occasionally to 9 feet. 
.monday night...west winds 20 to 30 knots. waves subsiding to
3 to 6 feet occasionally to 8 feet. 
.tuesday...west winds 15 to 25 knots. waves subsiding to 2 to
4 feet. 
.tuesday night...west winds 10 to 20 knots. waves subsiding to
calm to 2 feet. 
.wednesday...northwest winds 5 to 15 knots backing west. waves
calm to 2 feet. 
.thursday...west winds 5 to 15 knots. waves calm to 2 feet. 

$$

fzus63 kmqt 031402
glfls 
expires:202605032000;;948278

open lake forecast for lake superior
national weather service marquette mi
1001 am edt sun may 3 2026

for waters beyond 5 nautical miles of shore on lake superior.

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

.synopsis...

a 29.6 inch trough moves over lake superior today before lifting 
into northern ontario. a deepening 29.3 inch low digs over the 
canadian prairies tonight and then deepens to 29.1 inches over 
northern ontario on monday. the low lifts into james bay by monday 
evening as 30.1 inch ridging builds just to the east of the canadian 
rockies. as the high pressure ridging shifts to the canadian 
prairies tuesday and wednesday, the now-29.2 inch low continues 
lifting into far northern quebec. thursday into friday, the weather 
pattern becomes nebulous as major pressure systems remain far away 
from the upper great lakes.



lsz267-032000-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
1001 am edt sun may 3 2026

.rest of today...south winds 10 to 20 knots veering west late. a
chance of rain showers. waves calm to 2 feet. 
.tonight...west winds 10 to 20 knots becoming south 5 to 15 knots
after midnight, then increasing to 15 to 25 knots late. a slight
chance of rain showers after midnight. waves building to 3 to
5 feet occasionally to 7 feet. 
.monday...south winds 20 to 30 knots veering southwest in the
afternoon, then becoming west 15 to 25 knots late. rain showers
likely. waves building to 4 to 7 feet occasionally to 9 feet,
then subsiding to 3 to 6 feet occasionally to 8 feet. 
.monday night...west winds 15 to 25 knots. a slight chance of
rain showers through midnight. waves 3 to 6 feet occasionally to
8 feet. 
.tuesday...west winds 15 to 25 knots. waves subsiding to 2 to
4 feet. 
.tuesday night...west winds 10 to 20 knots. waves subsiding to
calm to 2 feet. 
.wednesday...west winds 5 to 15 knots. waves calm to 2 feet. 
.thursday...west winds 5 to 15 knots increasing to 10 to
20 knots. waves calm to 2 feet. 

$$

fzus63 kmqt 031402
glfls 
expires:202605032000;;948273

open lake forecast for lake superior
national weather service marquette mi
1001 am edt sun may 3 2026

for waters beyond 5 nautical miles of shore on lake superior.

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

.synopsis...

a 29.6 inch trough moves over lake superior today before lifting 
into northern ontario. a deepening 29.3 inch low digs over the 
canadian prairies tonight and then deepens to 29.1 inches over 
northern ontario on monday. the low lifts into james bay by monday 
evening as 30.1 inch ridging builds just to the east of the canadian 
rockies. as the high pressure ridging shifts to the canadian 
prairies tuesday and wednesday, the now-29.2 inch low continues 
lifting into far northern quebec. thursday into friday, the weather 
pattern becomes nebulous as major pressure systems remain far away 
from the upper great lakes.



lsz162-032000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1001 am edt sun may 3 2026 /901 am cdt sun may 3 2026/

.rest of today...west winds 10 to 20 knots backing southwest
late. waves calm to 2 feet building to 1 to 3 feet, then
subsiding to calm to 2 feet. 
.tonight...southwest winds 10 to 20 knots increasing to 20 to
30 knots. a chance of rain showers. waves building to 3 to 5 feet
occasionally to 7 feet. 
.monday...west winds 20 to 30 knots diminishing to 15 to 25 knots
late. a chance of rain showers. waves building to 3 to 6 feet
occasionally to 8 feet. 
.monday night...northwest winds 15 to 25 knots becoming west
10 to 20 knots after midnight. waves subsiding to calm to 2 feet.
.tuesday...west winds 10 to 20 knots. waves calm to 2 feet. 
.tuesday night...northwest winds 5 to 15 knots. waves calm to
2 feet. 
.wednesday...southwest winds 5 to 15 knots veering northwest.
waves calm to 2 feet. 
.thursday...southwest winds 5 to 15 knots veering west. waves
calm to 2 feet. 

$$

fzus63 kmqt 031402
glfls 
expires:202605032000;;948274

open lake forecast for lake superior
national weather service marquette mi
1001 am edt sun may 3 2026

for waters beyond 5 nautical miles of shore on lake superior.

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

.synopsis...

a 29.6 inch trough moves over lake superior today before lifting 
into northern ontario. a deepening 29.3 inch low digs over the 
canadian prairies tonight and then deepens to 29.1 inches over 
northern ontario on monday. the low lifts into james bay by monday 
evening as 30.1 inch ridging builds just to the east of the canadian 
rockies. as the high pressure ridging shifts to the canadian 
prairies tuesday and wednesday, the now-29.2 inch low continues 
lifting into far northern quebec. thursday into friday, the weather 
pattern becomes nebulous as major pressure systems remain far away 
from the upper great lakes.



lsz263-032000-
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 sun may 3 2026

.rest of today...west winds 5 to 15 knots increasing to 10 to
20 knots in the afternoon. waves calm to 2 feet building to 2 to
4 feet. 
.tonight...southwest winds 10 to 20 knots increasing to 20 to
30 knots. a chance of rain showers. waves building to 4 to 7 feet
occasionally to 9 feet. 
.monday...southwest winds 20 to 30 knots veering west in the
afternoon, then diminishing to 15 to 25 knots late. a chance of
rain showers. waves building to 4 to 8 feet occasionally to
10 feet. 
.monday night...west winds 15 to 25 knots diminishing to 10 to
20 knots after midnight. waves subsiding to 2 to 4 feet. 
.tuesday...west winds 10 to 20 knots. waves subsiding to 1 to
3 feet. 
.tuesday night...west winds 5 to 15 knots veering northwest after
midnight. waves subsiding to calm to 2 feet. 
.wednesday...west winds 5 to 15 knots. waves calm to 2 feet. 
.thursday...west winds 5 to 15 knots. waves calm to 2 feet. 

$$