fzus63 kdtx 050853
glflh 
expires:202603051700;;657244

open lake forecast for lake huron
national weather service detroit/pontiac mi
353 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 into the far
southern great lakes today. a stronger low, 29.50 inches, then 
moves into the northern great lakes late friday, with a cold front
passing through on saturday.


lhz361-362-051700-
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-
353 am est thu mar 5 2026

.today...east winds 15 to 20 knots. patchy fog 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. waves 5 to 7 feet. waves occasionally around
10 feet. 
.friday...southeast winds 10 to 15 knots. a chance of rain 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 4 to 6 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 050853
glflh 
expires:202603051700;;657245

open lake forecast for lake huron
national weather service detroit/pontiac mi
353 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 into the far
southern great lakes today. a stronger low, 29.50 inches, then 
moves into the northern great lakes late friday, with a cold front
passing through on saturday.


lhz363-051700-
lake huron from sturgeon point to alabaster mi beyond 5nm off
shore-
353 am est thu mar 5 2026

.today...east winds 10 to 15 knots becoming northeast 15 to
20 knots in the late morning and afternoon. areas of fog in the
morning. 
.tonight...northeast winds 15 to 20 knots becoming east 5 to
10 knots. a chance of rain in the evening. 
.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. 
.friday night...south winds 15 to 20 knots. rain and a chance of
thunderstorms in the evening...then rain likely and a chance of
thunderstorms after midnight. 
.saturday...south winds 15 to 20 knots veering to the west late
in the afternoon...then decreasing to 10 to 15 knots late in the
evening. rain likely in the morning. 
.sunday...southwest winds 15 to 20 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 kdtx 050853
glflh 
expires:202603051700;;657246

open lake forecast for lake huron
national weather service detroit/pontiac mi
353 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 into the far
southern great lakes today. a stronger low, 29.50 inches, then 
moves into the northern great lakes late friday, with a cold front
passing through on saturday.


lhz462>464-051700-
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-
353 am est thu mar 5 2026

...dense fog advisory in effect until 7 am est this morning...

.today...northeast winds 5 to 10 knots increasing to 10 to
15 knots in the late morning and afternoon. areas of fog in the
morning. a chance of rain in the afternoon. 
.tonight...northeast winds 10 to 15 knots decreasing to 5 to
10 knots in the late evening and overnight. a chance of rain in
the evening. 
.friday...southeast winds 5 to 10 knots increasing to 10 to
15 knots early in the afternoon. 
.friday night...south winds 10 to 15 knots increasing to 15 to
20 knots in the late evening and overnight. 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 decreasing to 5 to 10 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 15 to
20 knots. 
.monday...southwest winds 15 to 20 knots decreasing to 10 to
15 knots . 

waves omitted due to ice coverage.

$$

fzus63 kmkx 050913
glflm 
expires:202603051615;;658974

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
313 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 
southwestern portions of the open waters today and perhaps 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.


lmz671-673-675-777-779-051615-
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-
313 am cst thu mar 5 2026

port washington wi to whitehall mi south...

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

.today...northeast winds 10 to 15 kt. areas of dense fog. chance
of rain this morning, then slight chance of rain 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 becoming south 15 to 25 kt,
then diminishing to 10 to 20 kt late. 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 15 to 25 kt becoming southwest.
chance of showers and thunderstorms in the evening, then showers
with a chance of thunderstorms overnight. waves 4 to 7 ft
occasionally to 9 ft building to 5 to 8 ft occasionally to 10 ft.
.saturday...southwest winds 15 to 25 kt becoming northwest.
chance of rain showers in the morning. waves 5 to 8 ft
occasionally to 10 ft subsiding to 4 to 7 ft occasionally to
9 ft. 
.saturday night...west winds 10 to 20 kt becoming southwest 15 to
25 kt. waves 2 to 4 ft. 
.sunday...southwest winds to 30 kt diminishing to 15 to 25 kt.
waves 4 to 7 ft occasionally to 9 ft. 
.monday...southwest winds to 30 kt diminishing to 15 to 25 kt.
waves 5 to 8 ft occasionally to 10 ft.  

$$

fzus63 kmkx 050913
glflm 
expires:202603051615;;658973

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
313 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 
southwestern portions of the open waters today and perhaps 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.


lmz261-362-364-366-563-565-567-868-051615-
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-
313 am cst thu mar 5 2026

sheboygan wi to pentwater mi north...

.today...east winds 15 to 25 kt diminishing to 10 to 20 kt.
slight chance of rain this afternoon. waves 2 to 4 ft. 
.tonight...east winds 15 to 25 kt becoming southeast 10 to 20 kt.
slight chance of rain overnight. waves 2 to 4 ft subsiding to
1 to 2 ft. 
.friday...southeast winds 10 to 20 kt becoming south 15 to 25 kt.
chance of 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 3 to 5 ft building to 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 050913
glflm 
expires:202603051615;;658975

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
313 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 
southwestern portions of the open waters today and perhaps 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.


lmz080-669-870-872-874-876-878-051615-
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 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-
313 am cst thu mar 5 2026

sheboygan wi to pentwater mi south to port washington wi to
whitehall mi...

.today...northeast winds 10 to 15 kt. patchy fog. chance of rain
this morning, then slight chance of rain this afternoon. waves
1 to 2 ft. 
.tonight...east winds 10 to 15 kt becoming southeast. patchy fog
in the evening, then areas of dense fog overnight. 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 in the
afternoon. rain showers likely 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 rain showers and thunderstorms in the evening, then rain
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. 
.sunday...southwest winds to 30 kt. waves 6 to 9 ft occasionally
to 12 ft. 
.monday...southwest winds to 30 kt. waves 6 to 9 ft occasionally
to 12 ft.  

$$

fzus63 kmqt 050900
glfls 
expires:202603052100;;657513

open lake forecast for lake superior
national weather service marquette mi
400 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 30.6 inch high over far northern ontario builds to 30.7 inches 
over northwestern quebec this morning. as the high shifts over 
central quebec today, a 29.4 inch low develops over colorado. this 
low will weaken to 29.6 inches as it reaches wisconsin by friday 
night. saturday, the low quickly jumps northeast to southwestern 
quebec, deepening to 29.3 inches. a 30.2 inch high over the central 
to southern plains will project a weak 29.8 inch ridge over the lake 
saturday night before a 29.1 inch low cuts across northern ontario. 
the low pushes into quebec monday quickly followed by a 29.2 inch 
clipper low. by tuesday morning, the lake will be between high of 
30.3 inches 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-
400 am est thu mar 5 2026 /300 am cst thu mar 5 2026/

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

.early this morning...northeast winds 20 to 30 knots. patchy
dense fog. a slight chance of freezing rain, freezing drizzle and
snow showers. waves 4 to 7 feet occasionally to 9 feet. 
.today...northeast winds 15 to 25 knots. a slight chance of
freezing drizzle and snow showers in the morning. areas of dense
freezing fog in the morning. areas of dense fog. waves subsiding
to 3 to 5 feet occasionally to 7 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 calm to 2 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 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. 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
2 to 4 feet. 

$$

fzus63 kmqt 050900
glfls 
expires:202603052100;;657514

open lake forecast for lake superior
national weather service marquette mi
400 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 30.6 inch high over far northern ontario builds to 30.7 inches 
over northwestern quebec this morning. as the high shifts over 
central quebec today, a 29.4 inch low develops over colorado. this 
low will weaken to 29.6 inches as it reaches wisconsin by friday 
night. saturday, the low quickly jumps northeast to southwestern 
quebec, deepening to 29.3 inches. a 30.2 inch high over the central 
to southern plains will project a weak 29.8 inch ridge over the lake 
saturday night before a 29.1 inch low cuts across northern ontario. 
the low pushes into quebec monday quickly followed by a 29.2 inch 
clipper low. by tuesday morning, the lake will be between high of 
30.3 inches 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-
400 am est thu mar 5 2026

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

.early this morning...northeast winds 20 to 30 knots. patchy
dense fog. a slight chance of freezing rain, freezing drizzle and
snow showers. waves 5 to 8 feet occasionally to 10 feet. 
.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 in the morning. areas of dense freezing fog in the
morning. patchy dense fog. waves subsiding to 3 to 5 feet
occasionally to 7 feet. 
.tonight...east winds 10 to 20 knots becoming southeast 5 to
15 knots by midnight. patchy fog. waves subsiding to 2 to 4 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 1 to 3 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 subsiding to calm to 2 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 1 to 3 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 40 knots diminishing to 20 to
30 knots. waves building to 7 to 10 feet occasionally to 13 feet,
then 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 2 to 4 feet. 

$$

fzus63 kmqt 050900
glfls 
expires:202603052100;;657515

open lake forecast for lake superior
national weather service marquette mi
400 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 30.6 inch high over far northern ontario builds to 30.7 inches 
over northwestern quebec this morning. as the high shifts over 
central quebec today, a 29.4 inch low develops over colorado. this 
low will weaken to 29.6 inches as it reaches wisconsin by friday 
night. saturday, the low quickly jumps northeast to southwestern 
quebec, deepening to 29.3 inches. a 30.2 inch high over the central 
to southern plains will project a weak 29.8 inch ridge over the lake 
saturday night before a 29.1 inch low cuts across northern ontario. 
the low pushes into quebec monday quickly followed by a 29.2 inch 
clipper low. by tuesday morning, the lake will be between high of 
30.3 inches 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-
400 am est thu mar 5 2026

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

.early this morning...east winds 15 to 25 knots. patchy dense
fog. a slight chance of freezing rain, freezing drizzle and snow
showers. waves 5 to 8 feet occasionally to 10 feet. 
.today...east winds 15 to 25 knots diminishing to 10 to 20 knots.
a slight chance of freezing drizzle and snow showers in the
morning. patchy dense fog. waves subsiding to 3 to 5 feet
occasionally to 7 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 050900
glfls 
expires:202603052100;;657516

open lake forecast for lake superior
national weather service marquette mi
400 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 30.6 inch high over far northern ontario builds to 30.7 inches 
over northwestern quebec this morning. as the high shifts over 
central quebec today, a 29.4 inch low develops over colorado. this 
low will weaken to 29.6 inches as it reaches wisconsin by friday 
night. saturday, the low quickly jumps northeast to southwestern 
quebec, deepening to 29.3 inches. a 30.2 inch high over the central 
to southern plains will project a weak 29.8 inch ridge over the lake 
saturday night before a 29.1 inch low cuts across northern ontario. 
the low pushes into quebec monday quickly followed by a 29.2 inch 
clipper low. by tuesday morning, the lake will be between high of 
30.3 inches 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-
400 am est thu mar 5 2026

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

.early this morning...east winds 15 to 25 knots. areas of dense
fog. a slight chance of freezing drizzle. waves 5 to 8 feet
occasionally to 10 feet. 
.today...east winds 15 to 25 knots. patchy dense fog in the
morning. a slight chance of freezing drizzle in the morning.
waves 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 building to 2 to 4 feet, then subsiding to
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 5 feet occasionally to 7 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 050900
glfls 
expires:202603052100;;657517

open lake forecast for lake superior
national weather service marquette mi
400 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 30.6 inch high over far northern ontario builds to 30.7 inches 
over northwestern quebec this morning. as the high shifts over 
central quebec today, a 29.4 inch low develops over colorado. this 
low will weaken to 29.6 inches as it reaches wisconsin by friday 
night. saturday, the low quickly jumps northeast to southwestern 
quebec, deepening to 29.3 inches. a 30.2 inch high over the central 
to southern plains will project a weak 29.8 inch ridge over the lake 
saturday night before a 29.1 inch low cuts across northern ontario. 
the low pushes into quebec monday quickly followed by a 29.2 inch 
clipper low. by tuesday morning, the lake will be between high of 
30.3 inches 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-
400 am est thu mar 5 2026

.early this morning...east winds 20 to 30 knots. patchy fog. a
slight chance of freezing drizzle. waves 5 to 8 feet occasionally
to 10 feet. 
.today...east winds 15 to 25 knots diminishing to 10 to 20 knots
by mid afternoon. patchy fog in the morning. a slight chance of
freezing drizzle in the morning. waves 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 050900
glfls 
expires:202603052100;;657518

open lake forecast for lake superior
national weather service marquette mi
400 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 30.6 inch high over far northern ontario builds to 30.7 inches 
over northwestern quebec this morning. as the high shifts over 
central quebec today, a 29.4 inch low develops over colorado. this 
low will weaken to 29.6 inches as it reaches wisconsin by friday 
night. saturday, the low quickly jumps northeast to southwestern 
quebec, deepening to 29.3 inches. a 30.2 inch high over the central 
to southern plains will project a weak 29.8 inch ridge over the lake 
saturday night before a 29.1 inch low cuts across northern ontario. 
the low pushes into quebec monday quickly followed by a 29.2 inch 
clipper low. by tuesday morning, the lake will be between high of 
30.3 inches 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-
400 am est thu mar 5 2026

.early this morning...east winds 15 to 25 knots. a slight chance
of freezing drizzle and snow showers. waves 3 to 6 feet
occasionally to 8 feet. 
.today...east winds 15 to 25 knots diminishing to 10 to 20 knots.
waves 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. 

$$