fzus61 kbuf 050302
glflo 
expires:202602051000;;104113

open lake forecast for lake ontario
national weather service buffalo ny
1002 pm est wed feb 4 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 30.0 inch low over the mid saint lawrence valley 
will track to the gulf of maine today. meanwhile, a 30.4 inch high 
will settle into the lower ohio valley through thursday. a strong 
cold front will then cross the lower great lakes later friday and 
friday night, with a 30.5 inch high building into the central great 
lakes and ohio valley saturday. the high pressure will then build 
east over the lake through sunday.


loz063>065-051000-
lake ontario open waters from hamlin beach to the saint lawrence
river-
1002 pm est wed feb 4 2026

.rest of tonight...northwest winds 15 to 20 knots diminishing to
10 to 15 knots. lake effect snow likely late this evening, then a
chance of snow showers after midnight. waves 1 to 3 feet. 
.thursday...northwest winds 10 knots or less becoming west. a
chance of snow showers in the morning. waves 2 feet or less. 
.thursday night...southwest winds 10 knots or less becoming south
10 to 15 knots. waves 2 feet or less. 
.friday...south winds 10 to 15 knots becoming southwest. a chance
of snow showers in the morning, then snow showers likely in the
afternoon. waves 2 feet or less. 
.friday night...southwest winds 15 to 25 knots becoming northwest
to 30 knots. snow showers. waves 1 to 3 feet building to 6 to
9 feet. waves occasionally around 11 feet. 
.saturday...northwest winds to 30 knots becoming north 15 to
25 knots. snow showers likely during the day, then a chance of
snow showers saturday night. waves 6 to 9 feet subsiding to 3 to
6 feet. waves occasionally around 11 feet. 
.sunday...north winds 5 to 15 knots becoming west. waves 1 to
3 feet. 
.monday...west winds 5 to 10 knots becoming northeast. waves
2 feet or less. 

$$

fzus61 kbuf 050302
glflo 
expires:202602051000;;104112

open lake forecast for lake ontario
national weather service buffalo ny
1002 pm est wed feb 4 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 30.0 inch low over the mid saint lawrence valley 
will track to the gulf of maine today. meanwhile, a 30.4 inch high 
will settle into the lower ohio valley through thursday. a strong 
cold front will then cross the lower great lakes later friday and 
friday night, with a 30.5 inch high building into the central great 
lakes and ohio valley saturday. the high pressure will then build 
east over the lake through sunday.


loz062-051000-
lake ontario open waters from the niagara river to hamlin beach-
1002 pm est wed feb 4 2026

.rest of tonight...northwest winds 5 to 10 knots. a chance of
snow showers. waves 1 to 2 feet. 
.thursday...northwest winds 10 knots or less becoming southwest.
waves 1 foot or less. 
.thursday night...southwest winds 5 to 15 knots increasing to
15 to 20 knots. waves 1 to 3 feet. 
.friday...southwest winds 15 to 20 knots diminishing to 10 to
15 knots. snow showers. waves 1 to 3 feet. 
.friday night...west winds 15 to 20 knots becoming northwest and
increasing to 30 knots. snow showers likely. waves 2 to 4 feet
building to 6 to 9 feet. waves occasionally around 11 feet. 
.saturday...northwest winds to 30 knots diminishing to 10 to
15 knots. a chance of snow showers during the day. waves 6 to
9 feet subsiding to 2 to 4 feet. waves occasionally around
11 feet. 
.sunday...northwest winds around 10 knots becoming west. waves
1 to 2 feet. 
.monday...west winds 5 to 10 knots becoming northeast. waves
around 1 foot. 

$$

fzus61 kcle 050225
glfle 
expires:202602050915;;103199

open lake forecast for lake erie
national weather service cleveland oh
925 pm est wed feb 4 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 30.30 inches will persist over the region
through thursday. low pressure 29.60 inches will move east across
the upper great lakes and across southern ontario on friday, 
pushing a cold front east across lake erie friday evening. high 
pressure 30.50 inches will build southeast across the great lakes 
over the weekend before shifting east on monday.


lez162>164-050915-
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-
925 pm est wed feb 4 2026

.overnight...northwest winds 10 knots or less becoming
west. the lake is mostly ice covered.
.thursday...southwest winds 5 to 10 knots. 
.thursday night...southwest winds 10 to 15 knots increasing to
15 to 20 knots. a chance of snow showers overnight. 
.friday...southwest winds 15 to 20 knots becoming west. snow
showers. 
.friday night...northwest winds to 30 knots. a chance of snow
showers in the evening. 
.saturday...northwest winds 15 to 20 knots becoming southwest
5 to 15 knots. 
.sunday...south winds 5 to 10 knots. 
.monday...south winds 5 to 10 knots becoming southwest. 

waves omitted due to the lake being mostly ice covered.

$$

fzus61 kcle 050225
glfle 
expires:202602050915;;103200

open lake forecast for lake erie
national weather service cleveland oh
925 pm est wed feb 4 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 30.30 inches will persist over the region
through thursday. low pressure 29.60 inches will move east across
the upper great lakes and across southern ontario on friday, 
pushing a cold front east across lake erie friday evening. high 
pressure 30.50 inches will build southeast across the great lakes 
over the weekend before shifting east on monday.


lez061-165>169-050915-
ripley to buffalo ny extending from 5nm off shoreline to us-
canadian border-
vermilion to avon point oh beyond 5 nm off shoreline to us-
canadian border-
avon point to willowick oh beyond 5 nm off shoreline to us-
canadian border-willowick to geneva-on-the-
lake oh beyond 5nm off shoreline to us-canadian border-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-
925 pm est wed feb 4 2026

.overnight...west winds less than 10 knots. the lake is
mostly ice covered.
.thursday...southwest winds 10 knots or less. 
.thursday night...southwest winds 5 to 15 knots increasing to
15 to 20 knots. a chance of snow showers overnight. 
.friday...southwest winds 15 to 20 knots becoming west. snow
showers. 
.friday night...northwest winds 15 to 25 knots increasing to
30 knots. a chance of snow showers. 
.saturday...northwest winds 15 to 25 knots diminishing to 5 to
15 knots. 
.sunday...southwest winds 5 to 10 knots becoming south. 
.monday...south winds 5 to 10 knots becoming southwest. 

waves omitted due to the lake being mostly ice covered.

$$

fzus63 kdtx 050250
glfsc 
expires:202602051100;;103621

lake st clair forecast
national weather service detroit/pontiac mi
950 pm est wed feb 4 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...low pressure, 29.40 inches, reaches hudson bay
thursday night and drags an arctic front across the region
daytime friday. gale force winds and heavy freezing spray are
expected late friday through saturday morning as a result. high
pressure supports quieter conditions this weekend.


lcz460-051100-
lake st clair-
950 pm est wed feb 4 2026

.rest of tonight...light and variable winds. partly cloudy.
.thursday...southwest winds 5 to 10 knots becoming south 10 to 15
knots late in the afternoon. mostly cloudy. a chance of light snow
in the afternoon.
.thursday night...southwest winds 10 to 15 knots. mostly cloudy with
a chance of light snow.
.friday...southwest winds 10 to 15 knots becoming northwest 15 to 20
knots early in the afternoon. light snow until late afternoon.
.friday night...northwest winds 20 to 25 knots with gusts to 30
knots diminishing to 15 to 20 knots after midnight. mostly cloudy
early in the evening becoming partly cloudy. 
.saturday...northwest winds 15 to 20 knots becoming west 5 to 10
knots. mostly clear.
.sunday...south winds 5 to 10 knots. partly cloudy.
.monday...south winds 5 to 10 knots. mostly cloudy.

waves omitted due to ice coverage.

$$

fzus63 kdtx 050247
glflh 
expires:202602051100;;103602

open lake forecast for lake huron
national weather service detroit/pontiac mi
947 pm est wed feb 4 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...low pressure, 29.40 inches, reaches hudson bay
thursday night and drags an arctic front across the region
daytime friday. gale force winds and heavy freezing spray are
expected late friday through saturday morning as a result. high
pressure supports quieter conditions this weekend.


lhz463-464-051100-
lake huron from harbor beach to port sanilac beyond 5nm off shore-
lake huron from port sanilac to port huron beyond 5nm off shore-
947 pm est wed feb 4 2026

...gale watch in effect from friday afternoon through late friday
night...

.rest of tonight...west winds 5 to 10 knots. waves 2 feet or
less. 
.thursday...south winds 5 to 10 knots increasing to 10 to
15 knots in the afternoon. a chance of snow in the afternoon.
waves 2 feet or less. 
.thursday night...south winds 10 to 15 knots increasing to 15 to
20 knots after midnight. a chance of snow in the evening...then
snow likely after midnight. waves 1 to 3 feet. 
.friday...southwest winds 10 to 15 knots becoming northwest 15 to
20 knots with gusts to 35 knot gales early in the afternoon.
snow. waves 1 to 3 feet building to 4 to 6 feet early in the
afternoon. waves occasionally around 8 feet. 
.friday night...northwest at 35 knot gales decreasing to 30 knots
in the late evening and overnight. gusts to 40 knot gales. waves
8 to 12 feet. waves occasionally around 15 feet. a gale warning
may be needed. 
.saturday...northwest winds 20 to 25 knots with gusts to 35 knot
gales decreasing to 10 to 15 knots. waves 6 to 9 feet subsiding
to 2 to 4 feet late in the evening. waves occasionally around
12 feet. 
.sunday...southwest winds 10 to 15 knots becoming south 5 to
10 knots. waves 2 feet or less. 
.monday...south winds 10 to 15 knots decreasing to 5 to 10 knots.
waves 2 feet or less. 

wave heights are for ice free areas.

$$

fzus63 kdtx 050247
glflh 
expires:202602051100;;103600

open lake forecast for lake huron
national weather service detroit/pontiac mi
947 pm est wed feb 4 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...low pressure, 29.40 inches, reaches hudson bay
thursday night and drags an arctic front across the region
daytime friday. gale force winds and heavy freezing spray are
expected late friday through saturday morning as a result. high
pressure supports quieter conditions this weekend.


lhz361-051100-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
947 pm est wed feb 4 2026

...heavy freezing spray watch in effect from friday afternoon
through late friday night...

.rest of tonight...west winds 5 to 10 knots. waves 2 feet or
less. 
.thursday...south winds 5 to 10 knots increasing to 10 to
15 knots in the late morning and afternoon. snow likely in the
afternoon. waves 1 to 3 feet. 
.thursday night...south winds 10 to 15 knots. a chance of snow in
the evening...then snow after midnight. waves 2 to 4 feet. 
.friday...southwest winds 10 to 15 knots becoming northwest 15 to
20 knots with gusts to around 30 knots in the late morning and
early afternoon...then increasing to 30 knots with gusts to
35 knot gales early in the afternoon. snow in the morning. waves
1 to 3 feet building to 4 to 6 feet in the late morning and
afternoon. waves occasionally around 8 feet. 
.friday night...northwest winds 20 to 25 knots with gusts to
around 30 knots decreasing to 15 to 20 knots in the late evening
and overnight. heavy freezing spray in the evening. waves 4 to
6 feet. waves occasionally around 8 feet. 
.saturday...northwest winds 15 to 20 knots decreasing to 10 to
15 knots late in the morning...then decreasing to 5 to 10 knots
late in the afternoon veering to the northwest 5 to 10 knots late
in the evening. waves 2 to 4 feet subsiding to 1 to 3 feet. 
.sunday...south winds 5 to 10 knots. waves 2 feet or less. 
.monday...south winds 5 to 10 knots backing to the east by
midnight. waves 2 feet or less. 

wave heights are for ice free areas.

$$

fzus63 kdtx 050247
glflh 
expires:202602051100;;103601

open lake forecast for lake huron
national weather service detroit/pontiac mi
947 pm est wed feb 4 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...low pressure, 29.40 inches, reaches hudson bay
thursday night and drags an arctic front across the region
daytime friday. gale force winds and heavy freezing spray are
expected late friday through saturday morning as a result. high
pressure supports quieter conditions this weekend.


lhz362-363-462-051100-
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-
lake huron from port austin to harbor beach beyond 5nm off shore-
947 pm est wed feb 4 2026

...gale watch in effect from friday afternoon through late friday
night...
...heavy freezing spray watch in effect from friday afternoon
through late friday night...

.rest of tonight...west winds 5 to 10 knots. waves 1 to 3 feet. 
.thursday...southwest winds 5 to 10 knots becoming south 15 to
20 knots. a chance of snow in the afternoon. waves 1 to 3 feet
building to 3 to 5 feet in the afternoon. 
.thursday night...south winds 15 to 20 knots. a chance of snow.
waves 4 to 6 feet. waves occasionally around 8 feet. 
.friday...southwest winds 10 to 15 knots becoming west 15 to
20 knots in the late morning and early afternoon...then becoming
northwest to 30 knots with gusts to 40 knot gales early in the
afternoon. snow likely in the morning. freezing spray in the
afternoon. waves 4 to 6 feet building to 10 to 14 feet early in
the afternoon. waves occasionally around 18 feet. 
.friday night...northwest at 35 knot gales with gusts to 40 knot
gales becoming north 20 to 25 knots with gusts to around
30 knots. heavy freezing spray. waves 12 to 16 feet. waves
occasionally around 20 feet. a gale warning may be needed. 
.saturday...northwest winds 20 to 25 knots with gusts to around
30 knots decreasing to 10 to 15 knots. heavy freezing spray.
waves 8 to 12 feet subsiding to 3 to 5 feet late in the
afternoon. waves occasionally around 15 feet. 
.sunday...south winds 10 to 15 knots decreasing to 5 to 10 knots
early in the evening...then increasing to 10 to 15 knots by
midnight. waves 1 to 3 feet. 
.monday...south winds 10 to 15 knots decreasing to 5 to 10 knots
early in the evening...then becoming southeast 10 to 15 knots by
midnight. waves 2 to 4 feet. 

wave heights are for ice free areas.

$$

fzus63 kmqt 050301
glfls 
expires:202602050900;;103891

open lake forecast for lake superior
national weather service marquette mi
1000 pm est wed feb 4 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...

the 30.2 inch ridge currently over lake superior gives way to a 29.8 
inch trough tonight through thursday as a 29.6 inch low over 
northern manitoba moves to far northern ontario. the low moves east 
over hudson bay toward quebec, deepening to 29.3 inches thursday 
night. as a result, the trough over lake superior deepens to 29.6 
inches then presses east on friday, allowing a 30.5 inch high to 
move over the lake by saturday. the high will shift east through 
sunday in advance of another weak trough moving into the great lakes 
early next week, but exact strength and timing of this feature 
remain uncertain.



lsz265-050900-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
1000 pm est wed feb 4 2026

.rest of tonight...west winds 10 to 20 knots backing south late.
snow showers after midnight. waves calm to 2 feet. 
.thursday...south winds 10 to 20 knots becoming west 15 to
25 knots by late morning, then diminishing to 10 to 20 knots by
mid afternoon. a chance of snow showers. waves calm to 2 feet. 
.thursday night...west winds 10 to 20 knots increasing to 15 to
25 knots by midnight, then becoming northwest 20 to 30 knots
late. snow showers likely after midnight. waves building to 2 to
4 feet. 
.friday...north gales to 45 knots. a slight chance of snow
showers. waves building to 10 to 14 feet occasionally to 18 feet,
then subsiding to 9 to 12 feet occasionally to 15 feet. 
.friday night...north gales to 35 knots becoming northwest 20 to
30 knots after midnight. a slight chance of snow showers. waves
subsiding to 3 to 6 feet occasionally to 8 feet. 
.saturday...northwest winds 10 to 20 knots backing west in the
afternoon. waves subsiding to calm to 2 feet. 
.saturday night...south winds 10 to 20 knots. waves calm to
2 feet. 
.sunday...south winds 10 to 20 knots. waves calm to 2 feet. 
.monday...south winds 10 to 20 knots backing east. waves calm to
2 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 050301
glfls 
expires:202602050900;;103892

open lake forecast for lake superior
national weather service marquette mi
1000 pm est wed feb 4 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...

the 30.2 inch ridge currently over lake superior gives way to a 29.8 
inch trough tonight through thursday as a 29.6 inch low over 
northern manitoba moves to far northern ontario. the low moves east 
over hudson bay toward quebec, deepening to 29.3 inches thursday 
night. as a result, the trough over lake superior deepens to 29.6 
inches then presses east on friday, allowing a 30.5 inch high to 
move over the lake by saturday. the high will shift east through 
sunday in advance of another weak trough moving into the great lakes 
early next week, but exact strength and timing of this feature 
remain uncertain.



lsz266-050900-
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-
1000 pm est wed feb 4 2026

.rest of tonight...west winds 10 to 20 knots backing south late.
a chance of snow showers after midnight. waves calm to 2 feet
building to 2 to 4 feet. 
.thursday...south winds 15 to 25 knots veering southwest by late
morning, then becoming west 10 to 20 knots by mid afternoon. snow
showers in the morning, then a chance of snow showers in the
afternoon. waves building to 3 to 6 feet occasionally to 8 feet,
then subsiding to 2 to 4 feet. 
.thursday night...west winds 10 to 20 knots increasing to 15 to
25 knots by midnight, then becoming northwest to 30 knots with a
few gale force gusts to 35 knots possible late. snow showers
likely after midnight. waves building to 5 to 8 feet occasionally
to 10 feet. 
.friday...north gales to 45 knots. heavy freezing spray. a chance
of snow showers. waves building to 15 to 20 feet occasionally to
25 feet. 
.friday night...north gales to 40 knots. heavy freezing spray. a
chance of snow showers. waves subsiding to 6 to 9 feet
occasionally to 11 feet. 
.saturday...north winds 15 to 25 knots becoming northwest 10 to
20 knots in the afternoon. heavy freezing spray in the morning.
waves subsiding to 1 to 3 feet. 
.saturday night...south winds 10 to 20 knots increasing to 15 to
25 knots after midnight. a chance of snow showers. waves
subsiding to calm to 2 feet, then building to 2 to 4 feet. 
.sunday...south winds 15 to 25 knots diminishing to 10 to
20 knots. waves subsiding to 1 to 3 feet. 
.monday...south winds 10 to 20 knots backing southeast. waves
1 to 3 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 050301
glfls 
expires:202602050900;;103893

open lake forecast for lake superior
national weather service marquette mi
1000 pm est wed feb 4 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...

the 30.2 inch ridge currently over lake superior gives way to a 29.8 
inch trough tonight through thursday as a 29.6 inch low over 
northern manitoba moves to far northern ontario. the low moves east 
over hudson bay toward quebec, deepening to 29.3 inches thursday 
night. as a result, the trough over lake superior deepens to 29.6 
inches then presses east on friday, allowing a 30.5 inch high to 
move over the lake by saturday. the high will shift east through 
sunday in advance of another weak trough moving into the great lakes 
early next week, but exact strength and timing of this feature 
remain uncertain.



lsz267-050900-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
1000 pm est wed feb 4 2026

.rest of tonight...west winds 10 to 20 knots backing south late.
a slight chance of snow showers. waves 1 to 3 feet subsiding to
calm to 2 feet, then building to 2 to 4 feet. 
.thursday...south winds 15 to 25 knots veering southwest by mid
afternoon. snow showers likely. waves building to 3 to 5 feet
occasionally to 7 feet, then subsiding to 2 to 4 feet. 
.thursday night...southwest winds 15 to 25 knots diminishing to
10 to 20 knots by midnight, then becoming northwest 15 to
25 knots late. a slight chance of snow showers in the evening,
then snow showers likely after midnight. waves building to 3 to
6 feet occasionally to 8 feet. 
.friday...north gales to 45 knots. heavy freezing spray. a slight
chance of snow showers. waves building to 12 to 17 feet
occasionally to 21 feet. 
.friday night...north gales to 40 knots. heavy freezing spray. a
slight chance of snow showers. waves subsiding to 5 to 8 feet
occasionally to 10 feet. 
.saturday...north winds 15 to 25 knots diminishing to 10 to
20 knots in the afternoon. waves subsiding to 1 to 3 feet. 
.saturday night...south winds 10 to 20 knots. a chance of snow
showers. waves subsiding to calm to 2 feet, then building to 1 to
3 feet. 
.sunday...south winds 15 to 25 knots diminishing to 10 to
20 knots. waves building to 2 to 4 feet, then subsiding to 1 to
3 feet. 
.monday...southeast winds 10 to 20 knots. waves subsiding to calm
to 2 feet, then building to 1 to 3 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 050301
glfls 
expires:202602050900;;103888

open lake forecast for lake superior
national weather service marquette mi
1000 pm est wed feb 4 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...

the 30.2 inch ridge currently over lake superior gives way to a 29.8 
inch trough tonight through thursday as a 29.6 inch low over 
northern manitoba moves to far northern ontario. the low moves east 
over hudson bay toward quebec, deepening to 29.3 inches thursday 
night. as a result, the trough over lake superior deepens to 29.6 
inches then presses east on friday, allowing a 30.5 inch high to 
move over the lake by saturday. the high will shift east through 
sunday in advance of another weak trough moving into the great lakes 
early next week, but exact strength and timing of this feature 
remain uncertain.



lsz162-050900-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1000 pm est wed feb 4 2026 /900 pm cst wed feb 4 2026/

.rest of tonight...southwest winds 5 to 15 knots increasing to
15 to 25 knots. a chance of snow showers. waves calm to 2 feet
building to 2 to 4 feet. 
.thursday...southwest winds 15 to 25 knots becoming west 10 to
20 knots. a slight chance of snow showers in the morning. waves
subsiding to 1 to 3 feet. 
.thursday night...west winds 10 to 20 knots becoming northwest
15 to 25 knots late. a chance of rain and snow showers. waves
subsiding to calm to 2 feet, then building to 1 to 3 feet. 
.friday...north winds 20 to 30 knots diminishing to 15 to
25 knots in the afternoon. waves building to 3 to 5 feet
occasionally to 7 feet, then subsiding to 1 to 3 feet. 
.friday night...north winds 10 to 20 knots diminishing to 5 to
15 knots after midnight. waves subsiding to calm to 2 feet. 
.saturday...south winds 5 to 15 knots. waves calm to 2 feet. 
.saturday night...southeast winds 10 to 20 knots becoming south
5 to 15 knots after midnight. a chance of snow showers in the
evening. waves calm to 2 feet. 
.sunday...southwest winds 5 to 15 knots backing south. waves calm
to 2 feet. 
.monday...east winds 5 to 15 knots backing northeast. waves calm
to 2 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 050301
glfls 
expires:202602050900;;103889

open lake forecast for lake superior
national weather service marquette mi
1000 pm est wed feb 4 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...

the 30.2 inch ridge currently over lake superior gives way to a 29.8 
inch trough tonight through thursday as a 29.6 inch low over 
northern manitoba moves to far northern ontario. the low moves east 
over hudson bay toward quebec, deepening to 29.3 inches thursday 
night. as a result, the trough over lake superior deepens to 29.6 
inches then presses east on friday, allowing a 30.5 inch high to 
move over the lake by saturday. the high will shift east through 
sunday in advance of another weak trough moving into the great lakes 
early next week, but exact strength and timing of this feature 
remain uncertain.



lsz263-050900-
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-
1000 pm est wed feb 4 2026

.rest of tonight...southwest winds 5 to 15 knots increasing to
15 to 25 knots. a slight chance of snow showers late in the
evening, then snow showers likely after midnight. waves calm to
2 feet building to 2 to 4 feet. 
.thursday...southwest winds 15 to 25 knots becoming west 10 to
20 knots. a chance of snow showers. waves building to 3 to 5 feet
occasionally to 7 feet, then subsiding to 2 to 4 feet. 
.thursday night...west winds 10 to 20 knots becoming northwest
20 to 30 knots late. a slight chance of rain showers in the
evening. a chance of snow showers. waves subsiding to 1 to
3 feet, then building to 3 to 6 feet occasionally to 8 feet. 
.friday...north gales to 40 knots diminishing to 20 to 30 knots
in the afternoon. a slight chance of snow showers in the morning.
heavy freezing spray. waves building to 7 to 10 feet occasionally
to 13 feet, then subsiding to 3 to 6 feet occasionally to 8 feet.
.friday night...north winds 15 to 25 knots diminishing to 10 to
20 knots after midnight. waves subsiding to 1 to 3 feet. 
.saturday...north winds 5 to 15 knots veering south in the
afternoon. waves subsiding to calm to 2 feet. 
.saturday night...south winds 5 to 15 knots. a chance of snow
showers in the evening. waves calm to 2 feet. 
.sunday...southwest winds 5 to 15 knots backing south. waves calm
to 2 feet. 
.monday...east winds 5 to 15 knots. waves building to 1 to
3 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 050301
glfls 
expires:202602050900;;103890

open lake forecast for lake superior
national weather service marquette mi
1000 pm est wed feb 4 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...

the 30.2 inch ridge currently over lake superior gives way to a 29.8 
inch trough tonight through thursday as a 29.6 inch low over 
northern manitoba moves to far northern ontario. the low moves east 
over hudson bay toward quebec, deepening to 29.3 inches thursday 
night. as a result, the trough over lake superior deepens to 29.6 
inches then presses east on friday, allowing a 30.5 inch high to 
move over the lake by saturday. the high will shift east through 
sunday in advance of another weak trough moving into the great lakes 
early next week, but exact strength and timing of this feature 
remain uncertain.



lsz264-050900-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
1000 pm est wed feb 4 2026

.rest of tonight...west winds 5 to 15 knots backing southwest by
midnight, then increasing to 10 to 20 knots late. a slight chance
of snow showers late in the evening, then snow showers after
midnight. waves calm to 2 feet building to 2 to 4 feet. 
.thursday...southwest winds 15 to 25 knots becoming west 10 to
20 knots. a chance of snow showers. waves building to 3 to 5 feet
occasionally to 7 feet, then subsiding to 2 to 4 feet. 
.thursday night...west winds 10 to 20 knots becoming north to
30 knots with a few gale force gusts to 40 knots possible late.
freezing spray after midnight. a chance of snow showers after
midnight. waves building to 5 to 8 feet occasionally to 10 feet. 
.friday...north gales to 45 knots. heavy freezing spray. a slight
chance of snow showers in the afternoon. waves building to 11 to
15 feet occasionally to 19 feet, then subsiding to 9 to 12 feet
occasionally to 15 feet. 
.friday night...north gales to 35 knots diminishing to 15 to
25 knots after midnight. heavy freezing spray. a slight chance of
snow showers. waves subsiding to 3 to 5 feet occasionally to
7 feet. 
.saturday...north winds 5 to 15 knots backing northwest in the
afternoon. waves subsiding to calm to 2 feet. 
.saturday night...south winds 5 to 15 knots increasing to 10 to
20 knots after midnight. a chance of snow showers in the evening.
waves building to 1 to 3 feet. 
.sunday...southwest winds 5 to 15 knots backing south. waves
subsiding to calm to 2 feet. 
.monday...southeast winds 5 to 15 knots backing east. waves
building to 1 to 3 feet. 

note, wave height forecasts are for ice free areas.

$$