fzus63 kdtx 051452
glflh 
expires:202603052300;;671030

open lake forecast for lake huron
national weather service detroit/pontiac mi
952 am est thu mar 5 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...weak low pressure, 30.00 inches, lifts across the ohio
valley and tracks along the southern shore of lake erie today.
this brings showers and areas of fog to the southern waterways,
with light ene flow. a stronger low, 29.40 inches, will move into
the northern great lakes by saturday providing an uptick in winds
and showers out ahead of it. potential exists for some
thunderstorms. the system's cold front should pass through the
central great lakes saturday afternoon/evening leading to drier
conditions for the rest of the weekend.


lhz361-362-052300-
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-
952 am est thu mar 5 2026

.rest of today...east winds 15 to 20 knots. patchy fog late in
the morning. waves 5 to 7 feet. waves occasionally around
10 feet. 
.tonight...east winds 15 to 20 knots decreasing to 10 to 15 knots
after midnight. patchy fog after midnight. waves 4 to 6 feet.
waves occasionally around 8 feet. 
.friday...southeast winds 10 to 15 knots. patchy fog in the
morning. a chance of showers in the afternoon. waves 2 to 4 feet.
.friday night...southeast winds 15 to 20 knots veering to the
south after midnight. rain and a chance of thunderstorms. waves
4 to 6 feet. waves occasionally around 8 feet. 
.saturday...south winds 15 to 20 knots becoming southwest 20 to
25 knots late in the morning...then becoming west 15 to 20 knots
with gusts to around 30 knots late in the afternoon decreasing to
10 to 15 knots late in the evening. a chance of rain and
thunderstorms in the morning. waves 5 to 7 feet. waves
occasionally around 10 feet. 
.sunday...southwest winds 15 to 20 knots with gusts to around
30 knots increasing to 20 to 25 knots with gusts to around
30 knots. waves 6 to 9 feet. waves occasionally around 12 feet. 
.monday...southwest winds 20 to 25 knots decreasing to 15 to
20 knots until early evening...then veering to the west by
midnight. waves 5 to 7 feet. waves occasionally around 10 feet. 

wave heights are for ice free areas.

$$

fzus63 kdtx 051452
glflh 
expires:202603052300;;671031

open lake forecast for lake huron
national weather service detroit/pontiac mi
952 am est thu mar 5 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...weak low pressure, 30.00 inches, lifts across the ohio
valley and tracks along the southern shore of lake erie today.
this brings showers and areas of fog to the southern waterways,
with light ene flow. a stronger low, 29.40 inches, will move into
the northern great lakes by saturday providing an uptick in winds
and showers out ahead of it. potential exists for some
thunderstorms. the system's cold front should pass through the
central great lakes saturday afternoon/evening leading to drier
conditions for the rest of the weekend.


lhz363-462>464-052300-
lake huron from sturgeon point to alabaster mi beyond 5nm off
shore-
lake huron from port austin to harbor beach beyond 5nm off shore-
lake huron from harbor beach to port sanilac beyond 5nm off shore-
lake huron from port sanilac to port huron beyond 5nm off shore-
952 am est thu mar 5 2026

.rest of today...northeast winds 10 to 15 knots. areas of fog
late in the morning. scattered showers in the afternoon. 
.tonight...northeast winds 10 to 15 knots becoming east 5 to
10 knots after midnight. scattered showers in the evening. areas
of fog after midnight. 
.friday...east winds 5 to 10 knots veering to the southeast in
the late morning and early afternoon...then becoming south 10 to
15 knots early in the afternoon. patchy fog in the morning. 
.friday night...south winds 15 to 20 knots. rain likely and a
chance of thunderstorms in the evening...then rain likely after
midnight. 
.saturday...south winds 15 to 20 knots veering to the west late
in the afternoon...then becoming northwest 10 to 15 knots late in
the evening. rain likely in the morning...then a chance of rain
late in the morning. 
.sunday...southwest winds 10 to 15 knots increasing to 20 to
25 knots with gusts to around 30 knots. 
.monday...southwest winds 20 to 25 knots decreasing to 15 to
20 knots. 

waves omitted due to ice coverage.

$$

fzus63 kmkx 051457
glflm 
expires:202603052215;;671215

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
857 am cst thu mar 5 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...

east to northeast winds will continue through much of today, as 
weak low pressure around 29.9 inches passes across the northern 
ohio river valley. rain and drizzle are possible across the 
southern half of the lake into today, while marine dense fog with 
visibilities of 1 nautical mile or less continues across the
southern third of the open waters today into tonight.

low pressure around 29.5 inches will develop in the central 
plains thursday night, and track toward the upper mississippi 
river valley by friday evening. this low will move near or just 
north of lake michigan later friday night into saturday morning, 
quickly moving into quebec by saturday evening. 

as the low passes to the north, breezy southerly winds will 
develop for friday afternoon and night, then shifting west to
northwest on saturday, with the passage of the cold front. 
widespread rain and embedded thunderstorms will accompany the 
approaching and passing low friday into friday night. breezy
southwest winds are then forecast for sunday into monday.


lmz261-362-364-366-563-565-567-669-868-870-052215-
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 sheboygan to port washington wi 5 nm offshore
to mid lake-
lake michigan from pentwater to manistee mi 5 nm offshore to mid
lake-
lake michigan from whitehall to pentwater mi 5 nm offshore to mid
lake-
857 am cst thu mar 5 2026

port washington wi to whitehall mi north...

.rest of today...east winds 15 to 25 kt becoming northeast.
patchy fog. isolated rain showers. waves 2 to 4 ft. 
.tonight...east winds 15 to 25 kt becoming southeast 10 to 20 kt.
patchy fog. waves 2 to 4 ft subsiding to 1 to 3 ft.
.friday...southeast winds 10 to 20 kt becoming south 15 to 25 kt.
patchy fog in the morning. scattered rain showers in the morning,
then rain showers in the afternoon. waves 1 to 2 ft building to
4 to 6 ft occasionally to 8 ft. 
.friday night...south winds to 30 kt becoming southwest. rain
showers with a chance of thunderstorms. waves 6 to 9 ft
occasionally to 12 ft. 
.saturday...west winds to 30 kt becoming northwest. chance of
rain showers in the morning. waves 6 to 9 ft occasionally to
12 ft. 
.saturday night...west winds 10 to 20 kt becoming southwest to
30 kt. waves 4 to 6 ft occasionally to 8 ft. 
.sunday...southwest gales to 35 kt. waves 7 to 10 ft occasionally
to 13 ft. 
.monday...southwest winds to 30 kt diminishing to 15 to 25 kt.
waves 6 to 9 ft occasionally to 12 ft.  

$$

fzus63 kmkx 051457
glflm 
expires:202603052215;;671216

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
857 am cst thu mar 5 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...

east to northeast winds will continue through much of today, as 
weak low pressure around 29.9 inches passes across the northern 
ohio river valley. rain and drizzle are possible across the 
southern half of the lake into today, while marine dense fog with 
visibilities of 1 nautical mile or less continues across the
southern third of the open waters today into tonight.

low pressure around 29.5 inches will develop in the central 
plains thursday night, and track toward the upper mississippi 
river valley by friday evening. this low will move near or just 
north of lake michigan later friday night into saturday morning, 
quickly moving into quebec by saturday evening. 

as the low passes to the north, breezy southerly winds will 
develop for friday afternoon and night, then shifting west to
northwest on saturday, with the passage of the cold front. 
widespread rain and embedded thunderstorms will accompany the 
approaching and passing low friday into friday night. breezy
southwest winds are then forecast for sunday into monday.


lmz080-671-673-675-777-779-872-874-876-878-052215-
lake michigan from michigan city in to st. joseph mi 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 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-
857 am cst thu mar 5 2026

port washington wi to whitehall mi south...

...dense fog advisory in effect until 6 am cst friday...

.rest of today...northeast winds 10 to 15 kt. widespread dense
fog. scattered rain showers through mid morning, then isolated
rain showers this afternoon. waves 1 to 2 ft. 
.tonight...northeast winds 10 to 15 kt becoming southeast. areas
of dense fog. waves 1 to 2 ft. 
.friday...southeast winds 10 to 15 kt increasing to 10 to 20 kt
late in the morning, then becoming south 15 to 25 kt early in the
afternoon diminishing to 10 to 20 kt late. patchy fog in the
morning. scattered rain showers in the morning, then rain showers
likely with a chance of thunderstorms in the afternoon. waves
1 to 2 ft building to 4 to 6 ft occasionally to 8 ft. 
.friday night...south winds to 30 kt becoming southwest. chance
of showers and thunderstorms in the evening, then showers with a
chance of thunderstorms overnight. waves 6 to 9 ft occasionally
to 12 ft. 
.saturday...southwest winds to 30 kt becoming northwest 15 to
25 kt. chance of rain showers in the morning. waves 6 to 9 ft
occasionally to 12 ft. 
.saturday night...west winds 10 to 20 kt becoming southwest 15 to
25 kt. waves 4 to 6 ft occasionally to 8 ft subsiding to 2 to
4 ft. 
.sunday...southwest winds to 30 kt. waves 4 to 7 ft occasionally
to 9 ft building to 5 to 8 ft occasionally to 10 ft. 
.monday...southwest winds to 30 kt. waves 6 to 9 ft occasionally
to 12 ft.  

$$

fzus63 kmqt 051501
glfls 
expires:202603052100;;671587

open lake forecast for lake superior
national weather service marquette mi
1001 am est thu mar 5 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 30.7 inch high over james bay and quebec this morning moves east 
today, allowing 30.3 inch high pressure over lake superior this 
morning to fall to 30.0 inches by friday morning ahead of a 29.5 
inch low developing over kansas and nebraska. this low tracks 
northeast to upper michigan and lake superior at 29.5 inches by 
saturday morning. weak 29.8 ridging builds over the lake on saturday 
evening as the low quickly departs into quebec. 29.5 inch troughing 
returns to the lake on sunday as a 29.1 inch low tracks across 
northern ontario. this will be closely followed by a 29.3 inch 
clipper low crossing the lake monday morning. by tuesday morning, 
the lake will be between 30.3 inch high pressure over northern 
ontario and 29.6 inch low pressure over the upper mississippi river 
valley.



lsz162-052100-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1001 am est thu mar 5 2026 /901 am cst thu mar 5 2026/

...dense fog advisory in effect until 1 pm est /noon cst/ this
afternoon...

.rest of today...northeast winds 15 to 25 knots. a slight chance
of freezing drizzle and snow showers late in the morning. areas
of dense freezing fog late in the morning. areas of dense fog.
waves 3 to 6 feet occasionally to 8 feet. 
.tonight...east winds 10 to 20 knots diminishing to 5 to 15 knots
by midnight. patchy fog. a slight chance of drizzle and freezing
drizzle after midnight. waves subsiding to 1 to 3 feet. 
.friday...east winds 5 to 15 knots backing northeast by mid
afternoon. patchy fog in the morning. a chance of drizzle in the
morning. rain showers likely. waves subsiding to calm to 2 feet. 
.friday night...north winds 5 to 15 knots increasing to 10 to
20 knots after midnight. rain showers likely. a slight chance of
snow showers after midnight. waves calm to 2 feet. 
.saturday...northwest winds 15 to 25 knots backing west in the
afternoon. a slight chance of rain and snow showers in the
morning. waves building to 1 to 3 feet. 
.saturday night...southwest winds 20 to 30 knots increasing to
gales to 40 knots after midnight. waves building to 5 to 8 feet
occasionally to 10 feet. 
.sunday...southwest gales to 35 knots diminishing to 15 to
25 knots. waves building to 6 to 9 feet occasionally to 11 feet,
then subsiding to 2 to 4 feet. 
.monday...west winds 10 to 20 knots becoming northeast 15 to
25 knots. waves subsiding to calm to 2 feet, then building to
3 to 5 feet occasionally to 7 feet. 

$$

fzus63 kmqt 051501
glfls 
expires:202603052100;;671588

open lake forecast for lake superior
national weather service marquette mi
1001 am est thu mar 5 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 30.7 inch high over james bay and quebec this morning moves east 
today, allowing 30.3 inch high pressure over lake superior this 
morning to fall to 30.0 inches by friday morning ahead of a 29.5 
inch low developing over kansas and nebraska. this low tracks 
northeast to upper michigan and lake superior at 29.5 inches by 
saturday morning. weak 29.8 ridging builds over the lake on saturday 
evening as the low quickly departs into quebec. 29.5 inch troughing 
returns to the lake on sunday as a 29.1 inch low tracks across 
northern ontario. this will be closely followed by a 29.3 inch 
clipper low crossing the lake monday morning. by tuesday morning, 
the lake will be between 30.3 inch high pressure over northern 
ontario and 29.6 inch low pressure over the upper mississippi river 
valley.



lsz263-052100-
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 est thu mar 5 2026

...dense fog advisory in effect until 1 pm est this afternoon...

.rest of today...east winds 15 to 25 knots diminishing to 10 to
20 knots by mid afternoon. a slight chance of freezing drizzle
and snow showers late in the morning. areas of dense freezing fog
late in the morning. patchy dense fog. waves 3 to 6 feet
occasionally to 8 feet. 
.tonight...east winds 10 to 20 knots becoming southeast 5 to
15 knots by midnight. patchy fog. waves subsiding to 1 to 3 feet.
.friday...southeast winds 5 to 15 knots backing east by mid
afternoon. patchy fog in the morning. a chance of rain showers
and a slight chance of drizzle in the morning, then rain showers
likely in the afternoon. waves subsiding to calm to 2 feet. 
.friday night...north winds 5 to 15 knots increasing to 15 to
25 knots after midnight. a chance of rain showers in the evening,
then rain showers likely, possibly mixed with snow showers after
midnight. waves building to 1 to 3 feet. 
.saturday...northwest winds 15 to 25 knots backing west in the
afternoon. a chance of snow showers, possibly mixed with rain in
the morning. waves building to 2 to 4 feet. 
.saturday night...southwest winds 20 to 30 knots increasing to
gales to 40 knots after midnight. waves building to 7 to 10 feet
occasionally to 13 feet. 
.sunday...southwest gales to 40 knots diminishing to 20 to
30 knots. waves subsiding to 3 to 5 feet occasionally to 7 feet. 
.monday...west winds 15 to 25 knots veering northeast. waves
subsiding to calm to 2 feet, then building to 3 to 5 feet
occasionally to 7 feet. 

$$

fzus63 kmqt 051501
glfls 
expires:202603052100;;671589

open lake forecast for lake superior
national weather service marquette mi
1001 am est thu mar 5 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 30.7 inch high over james bay and quebec this morning moves east 
today, allowing 30.3 inch high pressure over lake superior this 
morning to fall to 30.0 inches by friday morning ahead of a 29.5 
inch low developing over kansas and nebraska. this low tracks 
northeast to upper michigan and lake superior at 29.5 inches by 
saturday morning. weak 29.8 ridging builds over the lake on saturday 
evening as the low quickly departs into quebec. 29.5 inch troughing 
returns to the lake on sunday as a 29.1 inch low tracks across 
northern ontario. this will be closely followed by a 29.3 inch 
clipper low crossing the lake monday morning. by tuesday morning, 
the lake will be between 30.3 inch high pressure over northern 
ontario and 29.6 inch low pressure over the upper mississippi river 
valley.



lsz264-052100-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
1001 am est thu mar 5 2026

...dense fog advisory in effect until 1 pm est this afternoon...

.rest of today...east winds 10 to 20 knots. a slight chance of
freezing drizzle and snow showers late in the morning. patchy
dense fog. waves 3 to 6 feet occasionally to 8 feet. 
.tonight...east winds 10 to 20 knots veering southeast by
midnight. patchy fog. waves subsiding to 2 to 4 feet. 
.friday...southeast winds 10 to 20 knots. patchy fog in the
morning. rain showers likely in the afternoon. waves 2 to 4 feet.
.friday night...south winds 5 to 15 knots becoming north 15 to
25 knots after midnight. a chance of rain showers in the evening,
then rain showers, possibly mixed with snow after midnight. waves
subsiding to 1 to 3 feet, then building to 2 to 4 feet. 
.saturday...north winds 20 to 30 knots backing west in the
afternoon. a chance of snow showers, possibly mixed with rain in
the morning. waves building to 3 to 6 feet occasionally to
8 feet, then subsiding to 2 to 4 feet. 
.saturday night...southwest winds 20 to 30 knots increasing to
gales to 40 knots after midnight. waves building to 6 to 9 feet
occasionally to 11 feet. 
.sunday...southwest gales to 45 knots diminishing to 20 to
30 knots. waves building to 7 to 10 feet occasionally to 13 feet,
then subsiding to 3 to 6 feet occasionally to 8 feet. 
.monday...west winds 20 to 30 knots becoming north 15 to
25 knots. waves subsiding to 2 to 4 feet, then building to 3 to
6 feet occasionally to 8 feet. 

$$

fzus63 kmqt 051501
glfls 
expires:202603052100;;671590

open lake forecast for lake superior
national weather service marquette mi
1001 am est thu mar 5 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 30.7 inch high over james bay and quebec this morning moves east 
today, allowing 30.3 inch high pressure over lake superior this 
morning to fall to 30.0 inches by friday morning ahead of a 29.5 
inch low developing over kansas and nebraska. this low tracks 
northeast to upper michigan and lake superior at 29.5 inches by 
saturday morning. weak 29.8 ridging builds over the lake on saturday 
evening as the low quickly departs into quebec. 29.5 inch troughing 
returns to the lake on sunday as a 29.1 inch low tracks across 
northern ontario. this will be closely followed by a 29.3 inch 
clipper low crossing the lake monday morning. by tuesday morning, 
the lake will be between 30.3 inch high pressure over northern 
ontario and 29.6 inch low pressure over the upper mississippi river 
valley.



lsz265-052100-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
1001 am est thu mar 5 2026

...dense fog advisory in effect until 1 pm est this afternoon...

.rest of today...east winds 15 to 25 knots. patchy dense fog late
in the morning. a slight chance of freezing drizzle late in the
morning. waves 3 to 6 feet occasionally to 8 feet subsiding to
2 to 4 feet. 
.tonight...southeast winds 15 to 25 knots diminishing to 10 to
20 knots late. patchy fog. waves subsiding to 1 to 3 feet. 
.friday...southeast winds 10 to 20 knots increasing to 15 to
25 knots by late morning, then diminishing to 10 to 20 knots by
mid afternoon. patchy fog in the morning. rain showers likely in
the afternoon. waves 1 to 3 feet. 
.friday night...south winds 10 to 20 knots becoming northwest
15 to 25 knots after midnight. a slight chance of thunderstorms
in the evening. rain showers likely. waves subsiding to calm to
2 feet. 
.saturday...northwest winds 20 to 30 knots. a chance of snow
showers, possibly mixed with rain in the morning. waves building
to 3 to 6 feet occasionally to 8 feet, then subsiding to 2 to
4 feet. 
.saturday night...southwest winds 15 to 25 knots increasing to
gales to 35 knots after midnight. waves subsiding to 1 to 3 feet,
then building to 3 to 5 feet occasionally to 7 feet. 
.sunday...southwest gales to 40 knots. waves building to 3 to
6 feet occasionally to 8 feet, then subsiding to 2 to 4 feet. 
.monday...west winds 20 to 30 knots becoming northwest 15 to
25 knots. waves subsiding to calm to 2 feet, then building to
3 to 6 feet occasionally to 8 feet. 

$$

fzus63 kmqt 051501
glfls 
expires:202603052100;;671591

open lake forecast for lake superior
national weather service marquette mi
1001 am est thu mar 5 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 30.7 inch high over james bay and quebec this morning moves east 
today, allowing 30.3 inch high pressure over lake superior this 
morning to fall to 30.0 inches by friday morning ahead of a 29.5 
inch low developing over kansas and nebraska. this low tracks 
northeast to upper michigan and lake superior at 29.5 inches by 
saturday morning. weak 29.8 ridging builds over the lake on saturday 
evening as the low quickly departs into quebec. 29.5 inch troughing 
returns to the lake on sunday as a 29.1 inch low tracks across 
northern ontario. this will be closely followed by a 29.3 inch 
clipper low crossing the lake monday morning. by tuesday morning, 
the lake will be between 30.3 inch high pressure over northern 
ontario and 29.6 inch low pressure over the upper mississippi river 
valley.



lsz266-052100-
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 est thu mar 5 2026

.rest of today...east winds 15 to 25 knots diminishing to 10 to
20 knots by mid afternoon. patchy fog late in the morning. a
slight chance of freezing drizzle late in the morning. waves 4 to
7 feet occasionally to 9 feet subsiding to 3 to 5 feet
occasionally to 7 feet. 
.tonight...southeast winds 10 to 20 knots increasing to 15 to
25 knots by midnight. patchy fog. a slight chance of freezing
drizzle after midnight. waves subsiding to 2 to 4 feet, then
building to 3 to 5 feet occasionally to 7 feet. 
.friday...southeast winds 15 to 25 knots increasing to 20 to
30 knots by late morning, then diminishing to 15 to 25 knots by
mid afternoon. patchy fog in the morning. rain showers likely in
the afternoon. waves subsiding to 2 to 4 feet. 
.friday night...south winds 10 to 20 knots becoming west 15 to
25 knots after midnight. rain showers and a slight chance of
thunderstorms. waves subsiding to 1 to 3 feet, then building to
2 to 4 feet. 
.saturday...northwest gales to 35 knots. a chance of rain and
snow showers in the morning. waves building to 5 to 9 feet
occasionally to 11 feet. 
.saturday night...west winds 15 to 25 knots becoming southwest
gales to 40 knots after midnight. waves subsiding to 3 to 6 feet
occasionally to 8 feet, then building to 6 to 9 feet occasionally
to 11 feet. 
.sunday...southwest gales to 40 knots. waves building to 8 to
11 feet occasionally to 14 feet, then subsiding to 5 to 8 feet
occasionally to 10 feet. 
.monday...southwest winds 20 to 30 knots becoming north 15 to
25 knots. waves subsiding to 3 to 5 feet occasionally to 7 feet,
then building to 4 to 7 feet occasionally to 9 feet. 

$$

fzus63 kmqt 051501
glfls 
expires:202603052100;;671592

open lake forecast for lake superior
national weather service marquette mi
1001 am est thu mar 5 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 30.7 inch high over james bay and quebec this morning moves east 
today, allowing 30.3 inch high pressure over lake superior this 
morning to fall to 30.0 inches by friday morning ahead of a 29.5 
inch low developing over kansas and nebraska. this low tracks 
northeast to upper michigan and lake superior at 29.5 inches by 
saturday morning. weak 29.8 ridging builds over the lake on saturday 
evening as the low quickly departs into quebec. 29.5 inch troughing 
returns to the lake on sunday as a 29.1 inch low tracks across 
northern ontario. this will be closely followed by a 29.3 inch 
clipper low crossing the lake monday morning. by tuesday morning, 
the lake will be between 30.3 inch high pressure over northern 
ontario and 29.6 inch low pressure over the upper mississippi river 
valley.



lsz267-052100-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
1001 am est thu mar 5 2026

.rest of today...east winds 15 to 25 knots diminishing to 10 to
20 knots. waves 2 to 4 feet subsiding to 1 to 3 feet. 
.tonight...southeast winds 10 to 20 knots increasing to 15 to
25 knots by midnight. patchy fog. a slight chance of freezing
drizzle after midnight. waves 1 to 3 feet. 
.friday...southeast winds 15 to 25 knots increasing to 20 to
30 knots by mid afternoon. patchy fog in the morning. rain
showers likely in the afternoon. waves building to 2 to 4 feet. 
.friday night...southeast winds 15 to 25 knots veering south
after midnight. rain showers and a slight chance of
thunderstorms. waves subsiding to calm to 2 feet, then building
to 1 to 3 feet. 
.saturday...west gales to 35 knots veering northwest in the
afternoon. a chance of rain showers, possibly mixed with snow in
the morning. waves building to 5 to 9 feet occasionally to
11 feet. 
.saturday night...west winds 15 to 25 knots becoming southwest
gales to 35 knots after midnight. waves subsiding to 3 to 6 feet
occasionally to 8 feet, then building to 6 to 9 feet occasionally
to 11 feet. 
.sunday...southwest gales to 40 knots. waves building to 8 to
11 feet occasionally to 14 feet, then subsiding to 5 to 8 feet
occasionally to 10 feet. 
.monday...southwest winds 20 to 30 knots becoming north 15 to
25 knots. waves subsiding to 3 to 6 feet occasionally to 8 feet. 

$$