fzus61 kbuf 280802
glflo 
expires:202604281500;;659346

open lake forecast for lake ontario
national weather service buffalo ny
402 am edt tue apr 28 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 29.4 inch low over the upper great lakes this morning 
will track into ontario today, while pushing a warm front across the 
lake. the low will then continue northeast to james bay tonight 
sending a cold front across the lake. an inverted trough averaging 
29.7 inches is expected across the lower great lakes wednesday 
through wednesday night. the trough/low will track to the canadian 
maritimes, while also elongating south along the coast of new 
england thursday through friday. the remnants of the sfc low will 
then retrograde northwest to near james bay as a 29.5 inch low 
tracks across the se u.s. and out to sea from the delmarva on 
saturday.


loz062-281500-
lake ontario open waters from the niagara river to hamlin beach-
402 am edt tue apr 28 2026

.today...southeast winds 15 to 20 knots becoming south. showers
through early afternoon, then a chance of showers late. waves
2 to 4 feet subsiding to 1 to 3 feet. 
.tonight...south winds 15 to 20 knots becoming northwest and
diminishing to 10 knots or less after midnight. a chance of
showers in the evening. waves 1 to 3 feet subsiding to 1 foot or
less. 
.wednesday...north winds 5 to 15 knots. a chance of showers in
the morning, then showers in the afternoon. waves 2 feet or less.
.wednesday night...northwest winds 10 to 15 knots becoming west
15 to 20 knots. rain showers. waves 1 to 3 feet building to 2 to
4 feet. 
.thursday...west winds 15 to 20 knots diminishing to 10 to
15 knots. waves 3 to 5 feet subsiding to 2 to 4 feet. 
.friday...west winds 10 to 15 knots. waves 2 to 3 feet. 
.saturday...west winds 10 to 15 knots. waves 1 to 2 feet. 

$$

fzus61 kbuf 280802
glflo 
expires:202604281500;;659347

open lake forecast for lake ontario
national weather service buffalo ny
402 am edt tue apr 28 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 29.4 inch low over the upper great lakes this morning 
will track into ontario today, while pushing a warm front across the 
lake. the low will then continue northeast to james bay tonight 
sending a cold front across the lake. an inverted trough averaging 
29.7 inches is expected across the lower great lakes wednesday 
through wednesday night. the trough/low will track to the canadian 
maritimes, while also elongating south along the coast of new 
england thursday through friday. the remnants of the sfc low will 
then retrograde northwest to near james bay as a 29.5 inch low 
tracks across the se u.s. and out to sea from the delmarva on 
saturday.


loz063>065-281500-
lake ontario open waters from hamlin beach to the saint lawrence
river-
402 am edt tue apr 28 2026

.today...southeast winds 15 to 20 knots. a chance of showers late
this morning. showers this afternoon. waves 3 to 5 feet subsiding
to 2 to 4 feet. 
.tonight...south winds 15 to 25 knots becoming southwest and
diminishing to 10 to 15 knots. showers likely early, then a
chance of showers. waves 3 to 5 feet subsiding to 1 to 3 feet. 
.wednesday...south winds 5 to 10 knots becoming north. a chance
of showers in the morning, then showers in the afternoon. waves
2 feet or less. 
.wednesday night...north winds 10 to 15 knots becoming west 15 to
20 knots. showers. waves 1 to 3 feet building to 3 to 5 feet. 
.thursday...west winds 15 to 20 knots. a chance of rain showers
during the day. waves 3 to 6 feet. 
.friday...west winds 10 to 15 knots increasing to 15 to 20 knots.
waves 2 to 4 feet. 
.saturday...west winds 10 to 15 knots. waves 1 to 3 feet. 

$$

fzus61 kcle 280739
glfle 
expires:202604281415;;658619

open lake forecast for lake erie
national weather service cleveland oh
339 am edt tue apr 28 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 cold front comes through today followed by a trough averaging
29.80 inches tonight into wednesday as low pressure passes south
of lake erie. as this surface low exits to the northeast, a trough
now averaging 30.00 inches will persist for the end of the week
and into the weekend.




lez162>164-281415-
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-
339 am edt tue apr 28 2026

.today...south winds 15 to 20 knots becoming west 10 to 15 knots.
a chance of showers with a slight chance of thunderstorms early,
then a slight chance of showers late this morning. waves 3 to
5 feet subsiding to 1 to 3 feet. 
.tonight...west winds 5 to 10 knots becoming north. a chance of
showers late. waves 2 feet or less. 
.wednesday...northeast winds 5 to 15 knots becoming north.
showers likely. waves 1 to 3 feet. 
.wednesday night...north winds 10 to 15 knots becoming northwest.
a chance of showers in the evening. waves 1 to 3 feet. 
.thursday...northwest winds around 10 knots. waves 2 feet or
less. 
.friday...northwest winds 10 to 15 knots. waves 1 to 2 feet. 
.saturday...northwest winds 10 to 15 knots becoming west. waves
1 to 2 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 280739
glfle 
expires:202604281415;;658620

open lake forecast for lake erie
national weather service cleveland oh
339 am edt tue apr 28 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 cold front comes through today followed by a trough averaging
29.80 inches tonight into wednesday as low pressure passes south
of lake erie. as this surface low exits to the northeast, a trough
now averaging 30.00 inches will persist for the end of the week
and into the weekend.




lez165>167-281415-
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-
339 am edt tue apr 28 2026

.today...south winds 15 to 25 knots becoming west and diminishing
to 10 to 15 knots. a chance of showers with a slight chance of
thunderstorms early, then a chance of showers late this morning.
waves 3 to 6 feet subsiding to 2 to 3 feet. 
.tonight...west winds 10 knots or less becoming north. waves 1 to
3 feet. 
.wednesday...northeast winds 5 to 15 knots becoming north.
showers. waves 1 to 3 feet. 
.wednesday night...north winds 10 to 15 knots becoming northwest.
showers likely in the evening. waves 2 to 4 feet. 
.thursday...northwest winds 5 to 15 knots. waves 1 to 3 feet. 
.friday...northwest winds around 10 knots becoming north. waves
1 to 2 feet. 
.saturday...northwest winds 5 to 15 knots becoming west. waves
1 to 3 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 280739
glfle 
expires:202604281415;;658621

open lake forecast for lake erie
national weather service cleveland oh
339 am edt tue apr 28 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 cold front comes through today followed by a trough averaging
29.80 inches tonight into wednesday as low pressure passes south
of lake erie. as this surface low exits to the northeast, a trough
now averaging 30.00 inches will persist for the end of the week
and into the weekend.




lez061-168-169-281415-
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-
339 am edt tue apr 28 2026

.today...south winds 15 to 25 knots becoming southwest and
diminishing to 10 to 15 knots. showers likely with a slight
chance of thunderstorms this morning, then a chance of showers
this afternoon. waves 3 to 6 feet subsiding to 1 to 3 feet. 
.tonight...southwest winds 5 to 15 knots becoming northwest less
than 10 knots. waves 1 to 3 feet. 
.wednesday...northeast winds 10 knots or less becoming north
10 to 15 knots. showers. waves 1 to 3 feet. 
.wednesday night...north winds 10 to 15 knots becoming northwest.
rain showers in the evening, then a chance of rain showers
overnight. waves 1 to 3 feet. 
.thursday...northwest winds 5 to 15 knots. waves 1 to 3 feet. 
.friday...northwest winds 5 to 10 knots. waves 1 to 2 feet. 
.saturday...northwest winds 5 to 15 knots becoming west. waves
1 to 2 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus63 kdtx 280736
glfsc 
expires:202604281545;;658471

lake st clair forecast
national weather service detroit/pontiac mi
336 am edt tue apr 28 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...a low pressure system, 29.30 inches, exits lake
superior and moves into central ontario this morning as its
expansive low-level wind field migrates across the central great
lakes. showers and embedded thunderstorms are expected before the
cold front passes through midday.


lcz460-281545-
lake st clair-
336 am edt tue apr 28 2026

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

.today...south winds 20 to 25 knots with gusts to 30 knots becoming
southwest 15 to 20 knots in the late morning and early
afternoon...then becoming west 10 to 15 knots late in the afternoon.
cloudy early in the morning becoming partly sunny. a chance of light
showers early in the morning. waves 2 to 4 feet subsiding to 1 to 3
feet in the late morning and afternoon.
.tonight...west winds 10 to 15 knots becoming northwest 5 to 10
knots in the late evening and overnight. partly cloudy. waves 2 feet
or less.
.wednesday...northeast winds 5 to 10 knots becoming north 10 to 15
knots in the late morning and afternoon. mostly cloudy with a chance
of light showers. waves 2 feet or less.
.wednesday night...north winds 10 to 15 knots becoming northwest 5
to 10 knots after midnight. partly cloudy. a chance of light showers
early in the evening. waves 2 feet or less.
.thursday...northwest winds 5 to 10 knots. mostly sunny in the
morning becoming partly cloudy. waves 2 feet or less.
.friday...north winds 10 to 15 knots. partly cloudy. waves 2 feet or
less.
.saturday...northwest winds 10 to 15 knots. partly cloudy. waves 2
feet or less.

$$

fzus63 kdtx 280731
glflh 
expires:202604281545;;658264

open lake forecast for lake huron
national weather service detroit/pontiac mi
331 am edt tue apr 28 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...a low pressure system, 29.30 inches, exits lake
superior and moves into central ontario this morning as its
expansive low-level wind field migrates across the central great
lakes. showers and embedded thunderstorms are expected before the
cold front passes through midday.


lhz361>363-281545-
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-
lake huron from sturgeon point to alabaster mi beyond 5nm off
shore-
331 am edt tue apr 28 2026

...gale warning in effect until 8 am edt this morning...

.today...south winds 20 to 25 knots with gusts to 35 knot gales
decreasing to 15 to 20 knots in the late morning and early
afternoon...then becoming southwest 10 to 15 knots late in the
afternoon. a chance of showers in the morning. waves 10 to
14 feet subsiding to 6 to 9 feet late in the afternoon. waves
occasionally around 18 feet. 
.tonight...southwest winds 10 to 15 knots becoming west 5 to
10 knots in the late evening and overnight. waves 3 to 5 feet
subsiding to 1 to 3 feet early in the morning. 
.wednesday...north winds 5 to 10 knots backing to the northwest
in the late morning and early afternoon...then becoming northwest
5 to 10 knots early in the afternoon. waves 1 to 3 feet. 
.wednesday night...northwest winds 10 to 15 knots increasing to
15 to 20 knots by midnight...then decreasing to 10 to 15 knots
after midnight. waves 3 to 5 feet. 
.thursday...northwest winds 10 to 15 knots. waves 3 to 5 feet. 
.friday...northwest winds 10 to 15 knots. waves 3 to 5 feet. 
.saturday...northwest winds 10 to 15 knots. waves 3 to 5 feet. 


$$

fzus63 kdtx 280731
glflh 
expires:202604281545;;658265

open lake forecast for lake huron
national weather service detroit/pontiac mi
331 am edt tue apr 28 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...a low pressure system, 29.30 inches, exits lake
superior and moves into central ontario this morning as its
expansive low-level wind field migrates across the central great
lakes. showers and embedded thunderstorms are expected before the
cold front passes through midday.


lhz462>464-281545-
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-
331 am edt tue apr 28 2026

.today...south winds 20 to 25 knots with gusts to 35 knot gales
decreasing to 15 to 20 knots late in the morning...then veering
to the southwest early in the afternoon decreasing to 10 to
15 knots late in the afternoon. showers in the morning. waves
6 to 9 feet subsiding to 4 to 6 feet late in the afternoon. waves
occasionally around 12 feet. 
.tonight...west winds 10 to 15 knots decreasing to 5 to 10 knots
by midnight...then veering to the west 5 to 10 knots early in the
morning. waves 2 to 4 feet subsiding to 1 to 3 feet in the late
evening and overnight. 
.wednesday...north winds 5 to 10 knots increasing to 10 to
15 knots in the late morning and afternoon. waves 1 to 3 feet
building to 2 to 4 feet early in the afternoon. 
.wednesday night...north winds 10 to 15 knots. waves 3 to 5 feet.
.thursday...northwest winds 10 to 15 knots becoming north 5 to
10 knots late in the morning...then becoming northwest 10 to
15 knots late in the evening. waves 3 to 5 feet subsiding to 1 to
3 feet late in the afternoon...then building to 2 to 4 feet late
in the evening. 
.friday...northwest winds 10 to 15 knots decreasing to northwest
by midnight. waves 2 to 4 feet subsiding to 1 to 3 feet . 
.saturday...northwest winds 10 to 15 knots decreasing to 5 to
10 knots until early evening...then veering to the northwest 5 to
10 knots by midnight. waves 2 to 4 feet subsiding to 1 to 3 feet
. 


$$

fzus63 kmkx 280750
glflm 
expires:202604281530;;659009

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
250 am cdt tue apr 28 2026

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

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

.synopsis...

a cold front progressing across lake michigan will shift all winds
from southerly to westerly by sunrise. patchy fog is possible
ahead of this front. winds will shift to northwesterly into
tonight as high pressure around 30.1 inches builds southward. by
wednesday morning, expect high pressure to settle over the upper
midwest. lighter, generally northerly winds are expected 
wednesday through friday. as high pressure slides southward into 
the weekend, winds will shift to become westerly.


lmz080-669-671-673-675-777-779-870-872-874-876-878-281530-
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-
250 am cdt tue apr 28 2026

sheboygan wi to pentwater mi south...

.today...west winds 15 to 25 kt diminishing to 10 to 20 kt. waves
4 to 7 ft occasionally to 9 ft subsiding to 2 to 4 ft. 
.tonight...west winds 10 to 15 kt veering to north. slight chance
of rain showers overnight. waves 1 to 3 ft subsiding to 1 to
2 ft. 
.wednesday...north winds 10 to 15 kt increasing to 10 to 20 kt.
waves 2 to 4 ft. 
.wednesday night...north winds 10 to 20 kt becoming northwest
5 to 10 kt overnight. waves 1 to 3 ft subsiding to 1 to 2 ft. 
.thursday...northwest winds 5 to 10 kt becoming north 10 to
15 kt. waves 1 to 3 ft. 
.thursday night...northeast winds 10 to 15 kt becoming north.
waves 1 to 2 ft. 
.friday...north winds 10 to 20 kt. waves 1 to 3 ft. 
.saturday...north winds 10 to 15 kt increasing to 10 to 20 kt.
waves 1 to 3 ft.  

$$

fzus63 kmkx 280750
glflm 
expires:202604281530;;659008

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
250 am cdt tue apr 28 2026

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

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

.synopsis...

a cold front progressing across lake michigan will shift all winds
from southerly to westerly by sunrise. patchy fog is possible
ahead of this front. winds will shift to northwesterly into
tonight as high pressure around 30.1 inches builds southward. by
wednesday morning, expect high pressure to settle over the upper
midwest. lighter, generally northerly winds are expected 
wednesday through friday. as high pressure slides southward into 
the weekend, winds will shift to become westerly.


lmz261-362-364-366-563-565-567-868-281530-
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-
250 am cdt tue apr 28 2026

sheboygan wi to pentwater mi north...

.today...southwest winds to 30 kt becoming west. waves 5 to 8 ft
occasionally to 10 ft subsiding to 3 to 5 ft. 
.tonight...northwest winds 10 to 20 kt becoming north 10 to 15 kt
late in the evening, then becoming northeast 5 to 10 kt after
midnight becoming north 10 to 15 kt late. waves 2 to 4 ft
subsiding to 1 to 3 ft. 
.wednesday...north winds 10 to 15 kt increasing to 10 to 20 kt.
waves 1 to 2 ft. 
.wednesday night...north winds 10 to 15 kt diminishing to 5 to
10 kt. waves 1 to 2 ft. 
.thursday...north winds 10 to 15 kt increasing to 10 to 20 kt.
waves 1 to 3 ft. 
.thursday night...north winds 10 to 20 kt. waves 1 to 3 ft. 
.friday...north winds 10 to 20 kt. waves 1 to 3 ft. 
.saturday...northwest winds 10 to 15 kt becoming west 10 to
20 kt. waves 1 to 3 ft.  

$$

fzus63 kmqt 280801
glfls 
expires:202604282000;;659295

open lake forecast for lake superior
national weather service marquette mi
401 am edt tue apr 28 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 29.4 inch low over lake superior this morning tracks to james bay 
by this evening and then continues into northern quebec on 
wednesday. weak ridging of 30.1 inches builds over the lake on 
wednesday between 30.3 inch high pressure over the canadian prairie 
and 29.7 inch troughing over the eastern seaboard. high pressure 
gradually strengthens to 30.2 inches over the lake through friday as 
the canadian high shifts east to northern ontario and hudson bay. 
weak troughing of 29.9 inches moves over the lake on saturday and 
strengthens to 29.7 inches through sunday as low pressure deepens to 
29.6 inches over james bay.



lsz265-282000-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
401 am edt tue apr 28 2026

...gale warning in effect through this afternoon...

.early this morning...west gales to 35 knots. patchy fog. a
chance of rain showers. waves 4 to 7 feet occasionally to 9 feet.
.today...west gales to 40 knots. a slight chance of rain showers
through early afternoon. waves building to 7 to 10 feet
occasionally to 13 feet, then subsiding to 3 to 6 feet
occasionally to 8 feet. 
.tonight...west winds 15 to 25 knots becoming northwest 10 to
20 knots after midnight. waves subsiding to calm to 2 feet. 
.wednesday...northwest winds 10 to 20 knots veering north in the
afternoon. waves calm to 2 feet. 
.wednesday night...northwest winds 5 to 15 knots increasing to
10 to 20 knots after midnight. waves calm to 2 feet. 
.thursday...north winds 10 to 20 knots. waves building to 1 to
3 feet. 
.thursday night...northwest winds 10 to 20 knots. waves subsiding
to calm to 2 feet. 
.friday...north winds 10 to 20 knots backing northwest. waves
building to 1 to 3 feet, then subsiding to calm to 2 feet. 
.saturday...northwest winds 10 to 20 knots becoming west 5 to
15 knots. waves building to 1 to 3 feet, then subsiding to calm
to 2 feet. 

$$

fzus63 kmqt 280801
glfls 
expires:202604282000;;659296

open lake forecast for lake superior
national weather service marquette mi
401 am edt tue apr 28 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 29.4 inch low over lake superior this morning tracks to james bay 
by this evening and then continues into northern quebec on 
wednesday. weak ridging of 30.1 inches builds over the lake on 
wednesday between 30.3 inch high pressure over the canadian prairie 
and 29.7 inch troughing over the eastern seaboard. high pressure 
gradually strengthens to 30.2 inches over the lake through friday as 
the canadian high shifts east to northern ontario and hudson bay. 
weak troughing of 29.9 inches moves over the lake on saturday and 
strengthens to 29.7 inches through sunday as low pressure deepens to 
29.6 inches over james bay.



lsz266-282000-
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 tue apr 28 2026

...gale warning in effect through this afternoon...

.early this morning...southwest gales to 35 knots. patchy fog. a
chance of rain showers. waves 5 to 9 feet occasionally to
11 feet. 
.today...west gales to 45 knots. patchy fog through early
afternoon. a slight chance of rain showers through early
afternoon. waves building to 10 to 14 feet occasionally to
18 feet, then subsiding to 8 to 11 feet occasionally to 14 feet. 
.tonight...northwest winds 20 to 30 knots diminishing to 10 to
20 knots after midnight. waves subsiding to 2 to 4 feet. 
.wednesday...northwest winds 10 to 20 knots. waves subsiding to
calm to 2 feet. 
.wednesday night...northwest winds 10 to 20 knots. waves calm to
2 feet. 
.thursday...north winds 15 to 25 knots backing northwest by mid
afternoon. waves building to 2 to 4 feet. 
.thursday night...northwest winds 15 to 25 knots becoming north
10 to 20 knots after midnight. waves subsiding to 1 to 3 feet. 
.friday...north winds 10 to 20 knots backing northwest. waves
building to 2 to 4 feet, then subsiding to 1 to 3 feet. 
.saturday...northwest winds 10 to 20 knots backing west. waves
subsiding to 1 to 3 feet, then building to 2 to 4 feet. 

$$

fzus63 kmqt 280801
glfls 
expires:202604282000;;659297

open lake forecast for lake superior
national weather service marquette mi
401 am edt tue apr 28 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 29.4 inch low over lake superior this morning tracks to james bay 
by this evening and then continues into northern quebec on 
wednesday. weak ridging of 30.1 inches builds over the lake on 
wednesday between 30.3 inch high pressure over the canadian prairie 
and 29.7 inch troughing over the eastern seaboard. high pressure 
gradually strengthens to 30.2 inches over the lake through friday as 
the canadian high shifts east to northern ontario and hudson bay. 
weak troughing of 29.9 inches moves over the lake on saturday and 
strengthens to 29.7 inches through sunday as low pressure deepens to 
29.6 inches over james bay.



lsz267-282000-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
401 am edt tue apr 28 2026

...gale warning in effect through this afternoon...

.early this morning...south winds 20 to 30 knots. a chance of
rain showers and a slight chance of thunderstorms. waves 5 to
8 feet occasionally to 10 feet subsiding to 3 to 6 feet
occasionally to 8 feet. 
.today...west gales to 40 knots. a chance of rain showers through
early afternoon. waves building to 11 to 15 feet occasionally to
19 feet, then subsiding to 9 to 12 feet occasionally to 15 feet. 
.tonight...west winds 20 to 30 knots becoming northwest 15 to
25 knots after midnight, then diminishing to 10 to 20 knots late.
waves subsiding to 2 to 4 feet. 
.wednesday...northwest winds 10 to 20 knots. waves subsiding to
calm to 2 feet. 
.wednesday night...northwest winds 10 to 20 knots. waves calm to
2 feet. 
.thursday...north winds 10 to 20 knots becoming northwest 15 to
25 knots by mid afternoon. waves building to 2 to 4 feet. 
.thursday night...northwest winds 15 to 25 knots becoming north
10 to 20 knots after midnight. waves subsiding to 1 to 3 feet. 
.friday...northwest winds 15 to 25 knots becoming north 10 to
20 knots. waves building to 2 to 4 feet, then subsiding to 1 to
3 feet. 
.saturday...northwest winds 15 to 25 knots diminishing to 10 to
20 knots. waves building to 2 to 4 feet, then subsiding to calm
to 2 feet. 

$$

fzus63 kmqt 280801
glfls 
expires:202604282000;;659292

open lake forecast for lake superior
national weather service marquette mi
401 am edt tue apr 28 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 29.4 inch low over lake superior this morning tracks to james bay 
by this evening and then continues into northern quebec on 
wednesday. weak ridging of 30.1 inches builds over the lake on 
wednesday between 30.3 inch high pressure over the canadian prairie 
and 29.7 inch troughing over the eastern seaboard. high pressure 
gradually strengthens to 30.2 inches over the lake through friday as 
the canadian high shifts east to northern ontario and hudson bay. 
weak troughing of 29.9 inches moves over the lake on saturday and 
strengthens to 29.7 inches through sunday as low pressure deepens to 
29.6 inches over james bay.



lsz162-282000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
401 am edt tue apr 28 2026 /301 am cdt tue apr 28 2026/

.early this morning...west winds to 30 knots with a few gale
force gusts to 35 knots possible. a chance of rain showers. waves
3 to 6 feet occasionally to 8 feet. 
.today...west winds 20 to 30 knots diminishing to 15 to 25 knots
late. waves building to 4 to 7 feet occasionally to 9 feet, then
subsiding to 1 to 3 feet. 
.tonight...northwest winds 10 to 20 knots diminishing to 5 to
15 knots after midnight. waves subsiding to calm to 2 feet. 
.wednesday...west winds 5 to 15 knots increasing to 10 to
20 knots in the afternoon, then diminishing to 5 to 15 knots
late. a slight chance of rain showers by mid afternoon. waves
calm to 2 feet. 
.wednesday night...northwest winds 5 to 15 knots veering north
after midnight. waves calm to 2 feet. 
.thursday...north winds 5 to 15 knots backing southwest by mid
afternoon. waves calm to 2 feet. 
.thursday night...north winds 5 to 15 knots. waves calm to
2 feet. 
.friday...north winds 5 to 15 knots backing northwest. waves calm
to 2 feet. 
.saturday...southwest winds 5 to 15 knots veering west. waves
calm to 2 feet. 

$$

fzus63 kmqt 280801
glfls 
expires:202604282000;;659293

open lake forecast for lake superior
national weather service marquette mi
401 am edt tue apr 28 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 29.4 inch low over lake superior this morning tracks to james bay 
by this evening and then continues into northern quebec on 
wednesday. weak ridging of 30.1 inches builds over the lake on 
wednesday between 30.3 inch high pressure over the canadian prairie 
and 29.7 inch troughing over the eastern seaboard. high pressure 
gradually strengthens to 30.2 inches over the lake through friday as 
the canadian high shifts east to northern ontario and hudson bay. 
weak troughing of 29.9 inches moves over the lake on saturday and 
strengthens to 29.7 inches through sunday as low pressure deepens to 
29.6 inches over james bay.



lsz263-282000-
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 tue apr 28 2026

...gale warning in effect until 2 pm edt this afternoon...

.early this morning...west winds 20 to 30 knots. rain showers
likely. waves 4 to 8 feet occasionally to 10 feet. 
.today...west gales to 35 knots diminishing to 15 to 25 knots. a
slight chance of rain showers through early afternoon. waves
building to 7 to 10 feet occasionally to 13 feet, then subsiding
to 3 to 6 feet occasionally to 8 feet. 
.tonight...northwest winds 10 to 20 knots diminishing to 5 to
15 knots after midnight. waves subsiding to calm to 2 feet. 
.wednesday...northwest winds 5 to 15 knots backing west in the
afternoon. waves calm to 2 feet. 
.wednesday night...north winds less than 10 knots increasing to
5 to 15 knots after midnight. waves calm to 2 feet. 
.thursday...north winds 5 to 15 knots backing west by mid
afternoon. waves calm to 2 feet. 
.thursday night...northwest winds 5 to 15 knots veering north
after midnight. waves calm to 2 feet. 
.friday...north winds 5 to 15 knots backing northwest. waves calm
to 2 feet. 
.saturday...southwest winds 5 to 15 knots veering west. waves
calm to 2 feet. 

$$

fzus63 kmqt 280801
glfls 
expires:202604282000;;659294

open lake forecast for lake superior
national weather service marquette mi
401 am edt tue apr 28 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 29.4 inch low over lake superior this morning tracks to james bay 
by this evening and then continues into northern quebec on 
wednesday. weak ridging of 30.1 inches builds over the lake on 
wednesday between 30.3 inch high pressure over the canadian prairie 
and 29.7 inch troughing over the eastern seaboard. high pressure 
gradually strengthens to 30.2 inches over the lake through friday as 
the canadian high shifts east to northern ontario and hudson bay. 
weak troughing of 29.9 inches moves over the lake on saturday and 
strengthens to 29.7 inches through sunday as low pressure deepens to 
29.6 inches over james bay.



lsz264-282000-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
401 am edt tue apr 28 2026

...gale warning in effect through this afternoon...

.early this morning...west winds 20 to 30 knots. patchy fog. a
chance of rain showers. waves 5 to 9 feet occasionally to
11 feet. 
.today...west gales to 40 knots diminishing to 20 to 30 knots
late. patchy fog through early afternoon. a slight chance of rain
showers through early afternoon. waves building to 7 to 10 feet
occasionally to 13 feet, then subsiding to 3 to 6 feet
occasionally to 8 feet. 
.tonight...northwest winds 10 to 20 knots diminishing to 5 to
15 knots after midnight. waves subsiding to calm to 2 feet. 
.wednesday...northwest winds 5 to 15 knots backing west late.
waves calm to 2 feet. 
.wednesday night...northwest winds 5 to 15 knots veering north
after midnight. waves calm to 2 feet. 
.thursday...north winds 5 to 15 knots backing northwest by mid
afternoon. waves calm to 2 feet. 
.thursday night...northwest winds 5 to 15 knots veering north
after midnight. waves calm to 2 feet. 
.friday...north winds 5 to 15 knots backing northwest. waves calm
to 2 feet. 
.saturday...northwest winds 5 to 15 knots backing west. waves
calm to 2 feet. 

$$