fzus63 kdtx 070845
glflh 
expires:202603071700;;775240

open lake forecast for lake huron
national weather service detroit/pontiac mi
345 am est sat mar 7 2026

for waters beyond five nautical miles off shore on lake huron

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

.synopsis...low pressure, 29.50 inches, will progress from the
northern great lakes into quebec today. this will push a cold
front over the great lakes late this morning and afternoon. wind
direction veers from southwest to northwest in the wake of the
front, with dry conditions for the remainder of the weekend.


lhz361-362-071700-
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-
345 am est sat mar 7 2026

...dense fog advisory in effect until 4 pm est this afternoon...

.today...south winds 15 to 20 knots becoming southwest 10 to
15 knots in the late morning and afternoon. a chance of showers.
widespread dense fog. waves 4 to 6 feet. waves occasionally
around 8 feet. 
.tonight...west winds 15 to 20 knots decreasing to 10 to 15 knots
after midnight...then backing to the southwest early in the
morning. waves 4 to 6 feet. waves occasionally around 8 feet. 
.sunday...southwest winds 15 to 20 knots increasing to 20 to
25 knots with gusts to around 30 knots in the late morning and
early afternoon...then decreasing to 15 to 20 knots early in the
afternoon. waves 5 to 7 feet. waves occasionally around 10 feet. 
.sunday night...southwest winds 10 to 15 knots increasing to
15 to 20 knots in the late evening and overnight. waves 5 to
7 feet. waves occasionally around 10 feet. 
.monday...southwest winds 15 to 20 knots becoming west 10 to
15 knots late in the morning...then veering to the northwest late
in the evening. waves 5 to 7 feet subsiding to 2 to 4 feet late
in the afternoon. waves occasionally around 10 feet. 
.tuesday...north winds 10 to 15 knots becoming northeast to
30 knots. rain and snow with freezing rain likely . waves 1 to
3 feet building to 10 to 14 feet. waves occasionally around
18 feet. 
.wednesday...northeast winds to 30 knots. snow likely until
afternoon. rain and freezing rain likely. a chance of snow. waves
10 to 14 feet. waves occasionally around 18 feet. 

wave heights are for ice free areas.

$$

fzus63 kdtx 070845
glflh 
expires:202603071700;;775241

open lake forecast for lake huron
national weather service detroit/pontiac mi
345 am est sat mar 7 2026

for waters beyond five nautical miles off shore on lake huron

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

.synopsis...low pressure, 29.50 inches, will progress from the
northern great lakes into quebec today. this will push a cold
front over the great lakes late this morning and afternoon. wind
direction veers from southwest to northwest in the wake of the
front, with dry conditions for the remainder of the weekend.


lhz363-462>464-071700-
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-
345 am est sat mar 7 2026

...dense fog advisory in effect until 4 pm est this afternoon...

.today...south winds 15 to 20 knots becoming southwest 10 to
15 knots late in the afternoon. showers likely in the morning...
then a chance of showers in the afternoon. widespread dense fog. 
.tonight...west winds 10 to 15 knots. 
.sunday...southwest winds 10 to 15 knots increasing to 20 to
25 knots with gusts to around 30 knots in the late morning and
early afternoon...then decreasing to 15 to 20 knots with gusts to
around 30 knots early in the afternoon. 
.sunday night...southwest winds 15 to 20 knots. 
.monday...southwest winds 15 to 20 knots decreasing to 10 to
15 knots late in the afternoon...then veering to the southwest
10 to 15 knots late in the evening. 
.tuesday...north winds 10 to 15 knots becoming northeast 20 to
25 knots with gusts to around 30 knots. rain and snow. 
.wednesday...north winds 20 to 25 knots increasing to 30 knots by
midnight. rain with snow likely until afternoon...then rain
likely and a chance of snow . 

waves omitted due to ice coverage.

$$

fzus63 kmkx 070915
glflm 
expires:202603071615;;777473

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
315 am cst sat mar 7 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...

low pressure around 29.5 inches over northeast wisconsin  
will move northeast into ontario later this morning. mild and
moist southwest winds will support dense fog at times until the
strong cold frontal passage occurs later this morning. a marine 
dense fog advisory is in effect until 9 am cst. breezy west to 
northwesterly winds are expected behind the front becoming 
southwest late tonight. breezy southwesterly winds are then 
expected for sunday into monday as two low pressure systems 
develop and track north of lake michigan through this time frame. 
cannot rule out a brief potential for gales sunday and monday for 
the northern third of the open waters of lake michigan.




lmz080-669-671-673-675-777-779-870-872-874-876-878-071615-
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-
315 am cst sat mar 7 2026

sheboygan wi to pentwater mi south...

...dense fog advisory in effect until 9 am cst this morning...

.today...southwest winds to 30 kt becoming west 15 to 25 kt early
this afternoon, then diminishing to 10 to 20 kt late. areas of
dense fog this morning. scattered rain showers with a chance of
thunderstorms this morning, then scattered rain showers this
afternoon. waves 4 to 7 ft occasionally to 9 ft subsiding to 4 to
6 ft occasionally to 8 ft. 
.tonight...west winds 10 to 20 kt becoming southwest 15 to 25 kt.
waves 3 to 5 ft. 
.sunday...southwest winds to 30 kt diminishing to 15 to 25 kt.
waves 4 to 7 ft occasionally to 9 ft building to 5 to 8 ft
occasionally to 10 ft. 
.sunday night...southwest winds to 30 kt. waves 6 to 9 ft
occasionally to 12 ft. 
.monday...southwest winds to 30 kt diminishing to 15 to 25 kt.
waves 6 to 9 ft occasionally to 12 ft subsiding to 4 to 7 ft
occasionally to 9 ft. 
.monday night...northwest winds 10 to 20 kt veering to northeast.
waves 2 to 4 ft building to 4 to 6 ft occasionally to 8 ft. 
.tuesday...northeast winds 15 to 25 kt increasing to 30 kt.
chance of rain showers. waves 4 to 7 ft occasionally to 9 ft
building to 6 to 9 ft occasionally to 12 ft. 
.wednesday...north gales to 35 kt. chance of rain and snow. waves
12 to 16 ft occasionally to 21 ft.  

$$

fzus63 kmkx 070915
glflm 
expires:202603071615;;777472

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
315 am cst sat mar 7 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...

low pressure around 29.5 inches over northeast wisconsin  
will move northeast into ontario later this morning. mild and
moist southwest winds will support dense fog at times until the
strong cold frontal passage occurs later this morning. a marine 
dense fog advisory is in effect until 9 am cst. breezy west to 
northwesterly winds are expected behind the front becoming 
southwest late tonight. breezy southwesterly winds are then 
expected for sunday into monday as two low pressure systems 
develop and track north of lake michigan through this time frame. 
cannot rule out a brief potential for gales sunday and monday for 
the northern third of the open waters of lake michigan.




lmz261-362-364-366-563-565-567-868-071615-
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-
315 am cst sat mar 7 2026

sheboygan wi to pentwater mi north...

...dense fog advisory in effect until 9 am cst this morning...

.today...southwest winds to 30 kt veering to northwest 15 to
25 kt. areas of dense fog this morning, then patchy fog this
afternoon. scattered rain showers this morning, then slight
chance of rain showers this afternoon. waves 4 to 7 ft
occasionally to 9 ft subsiding to 3 to 5 ft. 
.tonight...northwest winds 10 to 20 kt becoming west 10 to 15 kt
late in the evening, then becoming southwest 10 to 20 kt after
midnight increasing to 30 kt late. waves 2 to 4 ft building to
4 to 6 ft occasionally to 8 ft. 
.sunday...southwest winds to 30 kt. waves 7 to 10 ft occasionally
to 13 ft. 
.sunday night...southwest winds to 30 kt. waves 6 to 9 ft 
occasionally to 12 ft. 
.monday...southwest winds to 30 kt diminishing to 15 to 25 kt.
waves 6 to 9 ft occasionally to 12 ft subsiding to 4 to 7 ft
occasionally to 9 ft. 
.monday night...northeast winds 10 to 20 kt. waves 2 to 4 ft
building to 3 to 5 ft. 
.tuesday...northeast winds 15 to 25 kt increasing to 30 kt.
chance of rain and snow showers. waves 4 to 7 ft occasionally to
9 ft building to 6 to 9 ft occasionally to 12 ft. 
.wednesday...northeast winds to 30 kt becoming north gales to
35 kt. chance of snow, rain and light freezing rain. waves 10 to
14 ft occasionally to 18 ft.  

$$

fzus63 kmqt 070900
glfls 
expires:202603072100;;775811

open lake forecast for lake superior
national weather service marquette mi
400 am est sat mar 7 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...

an elongated 29.6 inch low pressure is moving across the lake early 
this morning, and deepens to 29.3 inches over quebec this afternoon. 
as the low continues to depart over labrador, weak 29.8 inch ridge 
will move over the lake this evening, associated with a 30.1 inch 
high over the southern plains. this ridge is kicked east by a 29.0 
inch low that transits northern ontario sunday, reaching northwest 
quebec sunday night into monday as a secondary 29.1 inch low trails 
behind near the northern shores of lake superior. the low exits the 
area monday afternoon before being replaced by a 30.3 inch high over 
northern ontario tuesday. the high slowly moves into quebec on 
wednesday as 29.6 low pressure moves across the southern great lakes 
basin. thursday morning, lake superior will be situated between 29.4 
inch low pressure over new england and 30.3 inch high pressure 
broadly spanning the plains.



lsz264-072100-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
400 am est sat mar 7 2026

...gale warning in effect from late tonight through sunday
afternoon...

.early this morning...north winds 10 to 20 knots. patchy fog.
freezing rain, possibly mixed with snow showers with rain
showers. waves 1 to 3 feet building to 2 to 4 feet. 
.today...north winds 15 to 25 knots becoming west 10 to 20 knots
by mid afternoon. patchy dense fog in the morning. snow showers
in the morning. waves building to 3 to 6 feet occasionally to
8 feet, then subsiding to 1 to 3 feet. 
.tonight...southwest winds 15 to 25 knots increasing to gales to
45 knots by midnight. a slight chance of rain and snow showers
after midnight. waves building to 8 to 11 feet occasionally to
14 feet. 
.sunday...west gales to 45 knots becoming southwest gales to
40 knots by late morning, then diminishing to 20 to 30 knots by
mid afternoon. waves subsiding to 4 to 7 feet occasionally to
9 feet. 
.sunday night...southwest winds 15 to 25 knots increasing to
20 to 30 knots after midnight. a slight chance of rain showers in
the evening. waves subsiding to 3 to 6 feet occasionally to
8 feet, then building to 4 to 7 feet occasionally to 9 feet. 
.monday...west gales to 35 knots diminishing to 20 to 30 knots in
the afternoon. waves subsiding to 2 to 4 feet. 
.monday night...north winds 5 to 15 knots. waves subsiding to
1 to 3 feet. 
.tuesday...northeast winds 15 to 25 knots increasing to 20 to
30 knots. a chance of snow showers. waves building to 7 to
10 feet occasionally to 13 feet. 
.wednesday...northeast gales to 35 knots becoming north 20 to
30 knots. waves building to 8 to 11 feet occasionally to 14 feet,
then subsiding to 3 to 6 feet occasionally to 8 feet. 

$$

fzus63 kmqt 070900
glfls 
expires:202603072100;;775812

open lake forecast for lake superior
national weather service marquette mi
400 am est sat mar 7 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...

an elongated 29.6 inch low pressure is moving across the lake early 
this morning, and deepens to 29.3 inches over quebec this afternoon. 
as the low continues to depart over labrador, weak 29.8 inch ridge 
will move over the lake this evening, associated with a 30.1 inch 
high over the southern plains. this ridge is kicked east by a 29.0 
inch low that transits northern ontario sunday, reaching northwest 
quebec sunday night into monday as a secondary 29.1 inch low trails 
behind near the northern shores of lake superior. the low exits the 
area monday afternoon before being replaced by a 30.3 inch high over 
northern ontario tuesday. the high slowly moves into quebec on 
wednesday as 29.6 low pressure moves across the southern great lakes 
basin. thursday morning, lake superior will be situated between 29.4 
inch low pressure over new england and 30.3 inch high pressure 
broadly spanning the plains.



lsz265-072100-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
400 am est sat mar 7 2026

...gale warning in effect from late tonight through sunday
afternoon...

.early this morning...northwest winds 15 to 25 knots. areas of
dense fog. rain showers likely. waves calm to 2 feet. 
.today...northwest winds 20 to 30 knots diminishing to 15 to
25 knots by mid afternoon. patchy dense fog in the morning. sleet
with rain showers and freezing rain likely in the morning. a
chance of snow showers. waves building to 3 to 6 feet
occasionally to 8 feet, then subsiding to 2 to 4 feet. 
.tonight...west winds 15 to 25 knots becoming south 20 to
30 knots by midnight, then becoming southwest gales to 40 knots
late. waves subsiding to calm to 2 feet, then building to 3 to
5 feet occasionally to 7 feet. 
.sunday...west gales to 45 knots becoming southwest 20 to
30 knots by mid afternoon. waves subsiding to calm to 2 feet. 
.sunday night...southwest winds 20 to 30 knots increasing to
gales to 35 knots after midnight. waves building to 2 to 4 feet. 
.monday...west gales to 35 knots diminishing to 20 to 30 knots in
the afternoon. waves subsiding to calm to 2 feet. 
.monday night...northwest winds 10 to 20 knots veering north
after midnight. waves building to 1 to 3 feet. 
.tuesday...northeast winds 15 to 25 knots increasing to 20 to
30 knots. a chance of snow showers. waves building to 8 to
11 feet occasionally to 14 feet. 
.wednesday...north gales to 35 knots diminishing to 20 to
30 knots. a chance of snow showers. waves building to 9 to
12 feet occasionally to 15 feet, then subsiding to 6 to 9 feet
occasionally to 11 feet. 

$$

fzus63 kmqt 070900
glfls 
expires:202603072100;;775813

open lake forecast for lake superior
national weather service marquette mi
400 am est sat mar 7 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...

an elongated 29.6 inch low pressure is moving across the lake early 
this morning, and deepens to 29.3 inches over quebec this afternoon. 
as the low continues to depart over labrador, weak 29.8 inch ridge 
will move over the lake this evening, associated with a 30.1 inch 
high over the southern plains. this ridge is kicked east by a 29.0 
inch low that transits northern ontario sunday, reaching northwest 
quebec sunday night into monday as a secondary 29.1 inch low trails 
behind near the northern shores of lake superior. the low exits the 
area monday afternoon before being replaced by a 30.3 inch high over 
northern ontario tuesday. the high slowly moves into quebec on 
wednesday as 29.6 low pressure moves across the southern great lakes 
basin. thursday morning, lake superior will be situated between 29.4 
inch low pressure over new england and 30.3 inch high pressure 
broadly spanning the plains.



lsz266-072100-
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 sat mar 7 2026

...gale warning in effect from late tonight through sunday
afternoon...

.early this morning...northwest winds 10 to 20 knots. areas of
dense fog. rain showers likely. waves 1 to 3 feet. 
.today...northwest winds 20 to 30 knots diminishing to 15 to
25 knots by mid afternoon. areas of dense fog in the morning.
rain showers likely in the morning. a chance of snow showers.
waves building to 4 to 8 feet occasionally to 10 feet. 
.tonight...west winds 15 to 25 knots becoming south 20 to
30 knots by midnight, then increasing to gales to 45 knots late.
a slight chance of rain and snow showers after midnight. waves
subsiding to 2 to 4 feet, then building to 6 to 9 feet
occasionally to 11 feet. 
.sunday...southwest gales to 45 knots veering west by late
morning, then becoming southwest 20 to 30 knots by mid afternoon.
waves building to 8 to 11 feet occasionally to 14 feet, then
subsiding to 4 to 7 feet occasionally to 9 feet. 
.sunday night...south winds 20 to 30 knots becoming southwest
gales to 35 knots after midnight. a slight chance of rain showers
in the evening. waves subsiding to 3 to 6 feet occasionally to
8 feet, then building to 5 to 8 feet occasionally to 10 feet. 
.monday...west gales to 35 knots. waves subsiding to 3 to 6 feet
occasionally to 8 feet. 
.monday night...northwest winds 10 to 20 knots becoming north
15 to 25 knots after midnight. waves subsiding to 2 to 4 feet. 
.tuesday...northeast winds 15 to 25 knots increasing to gales to
35 knots. a chance of snow showers. waves building to 8 to
11 feet occasionally to 14 feet. 
.wednesday...northeast gales to 35 knots backing north. a chance
of snow showers. waves building to 8 to 12 feet occasionally to
15 feet. 

$$

fzus63 kmqt 070900
glfls 
expires:202603072100;;775814

open lake forecast for lake superior
national weather service marquette mi
400 am est sat mar 7 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...

an elongated 29.6 inch low pressure is moving across the lake early 
this morning, and deepens to 29.3 inches over quebec this afternoon. 
as the low continues to depart over labrador, weak 29.8 inch ridge 
will move over the lake this evening, associated with a 30.1 inch 
high over the southern plains. this ridge is kicked east by a 29.0 
inch low that transits northern ontario sunday, reaching northwest 
quebec sunday night into monday as a secondary 29.1 inch low trails 
behind near the northern shores of lake superior. the low exits the 
area monday afternoon before being replaced by a 30.3 inch high over 
northern ontario tuesday. the high slowly moves into quebec on 
wednesday as 29.6 low pressure moves across the southern great lakes 
basin. thursday morning, lake superior will be situated between 29.4 
inch low pressure over new england and 30.3 inch high pressure 
broadly spanning the plains.



lsz267-072100-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
400 am est sat mar 7 2026

...gale warning in effect from late tonight through sunday
afternoon...

.early this morning...south winds 10 to 20 knots. areas of dense
fog. rain showers. waves calm to 2 feet. 
.today...west winds 10 to 20 knots becoming northwest 15 to
25 knots by late morning, then increasing to 20 to 30 knots by
mid afternoon. areas of dense fog in the morning. a chance of
rain showers. a chance of snow showers in the afternoon. waves
building to 4 to 7 feet occasionally to 9 feet, then subsiding to
3 to 6 feet occasionally to 8 feet. 
.tonight...northwest winds 10 to 20 knots becoming southwest
15 to 25 knots by midnight, then becoming south gales to 35 knots
late. a slight chance of snow showers after midnight. waves
subsiding to 2 to 4 feet, then building to 4 to 7 feet
occasionally to 9 feet. 
.sunday...southwest gales to 40 knots veering west by late
morning, then becoming southwest 20 to 30 knots by mid afternoon.
a slight chance of rain and snow showers in the morning. waves
building to 7 to 10 feet occasionally to 13 feet, then subsiding
to 4 to 7 feet occasionally to 9 feet. 
.sunday night...south winds 20 to 30 knots becoming southwest
gales to 35 knots after midnight. a chance of rain showers. waves
subsiding to 3 to 5 feet occasionally to 7 feet, then building to
5 to 8 feet occasionally to 10 feet. 
.monday...west winds 20 to 30 knots. waves subsiding to 3 to
6 feet occasionally to 8 feet. 
.monday night...northwest winds 10 to 20 knots veering north
after midnight. waves subsiding to 2 to 4 feet. 
.tuesday...northeast winds 15 to 25 knots increasing to gales to
35 knots. a chance of snow showers. waves subsiding to 1 to
3 feet, then building to 5 to 8 feet occasionally to 10 feet. 
.wednesday...northeast gales to 35 knots backing north. a chance
of snow showers. waves building to 7 to 10 feet occasionally to
13 feet, then subsiding to 5 to 8 feet occasionally to 10 feet. 

$$

fzus63 kmqt 070900
glfls 
expires:202603072100;;775809

open lake forecast for lake superior
national weather service marquette mi
400 am est sat mar 7 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...

an elongated 29.6 inch low pressure is moving across the lake early 
this morning, and deepens to 29.3 inches over quebec this afternoon. 
as the low continues to depart over labrador, weak 29.8 inch ridge 
will move over the lake this evening, associated with a 30.1 inch 
high over the southern plains. this ridge is kicked east by a 29.0 
inch low that transits northern ontario sunday, reaching northwest 
quebec sunday night into monday as a secondary 29.1 inch low trails 
behind near the northern shores of lake superior. the low exits the 
area monday afternoon before being replaced by a 30.3 inch high over 
northern ontario tuesday. the high slowly moves into quebec on 
wednesday as 29.6 low pressure moves across the southern great lakes 
basin. thursday morning, lake superior will be situated between 29.4 
inch low pressure over new england and 30.3 inch high pressure 
broadly spanning the plains.



lsz162-072100-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
400 am est sat mar 7 2026 /300 am cst sat mar 7 2026/

...gale warning in effect from late tonight through sunday
morning...

.early this morning...northwest winds 10 to 20 knots. patchy fog.
snow showers, possibly mixed with rain. waves calm to 2 feet. 
.today...northwest winds 10 to 20 knots backing southwest by mid
afternoon. patchy fog in the morning. snow showers likely in the
morning. waves calm to 2 feet. 
.tonight...southwest winds 15 to 25 knots increasing to gales to
40 knots by midnight. waves building to 6 to 9 feet occasionally
to 11 feet. 
.sunday...southwest gales to 35 knots diminishing to 15 to
25 knots. waves subsiding to 2 to 4 feet. 
.sunday night...southwest winds 15 to 25 knots veering west after
midnight. waves 2 to 4 feet. 
.monday...west winds 15 to 25 knots diminishing to 10 to 20 knots
in the afternoon. waves subsiding to calm to 2 feet. 
.monday night...northwest winds 5 to 15 knots becoming northeast
10 to 20 knots after midnight. waves calm to 2 feet. 
.tuesday...northeast winds 20 to 30 knots. a chance of snow
showers. waves building to 4 to 8 feet occasionally to 10 feet. 
.wednesday...northeast winds 15 to 25 knots becoming north 5 to
15 knots. waves subsiding to calm to 2 feet. 

$$

fzus63 kmqt 070900
glfls 
expires:202603072100;;775810

open lake forecast for lake superior
national weather service marquette mi
400 am est sat mar 7 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...

an elongated 29.6 inch low pressure is moving across the lake early 
this morning, and deepens to 29.3 inches over quebec this afternoon. 
as the low continues to depart over labrador, weak 29.8 inch ridge 
will move over the lake this evening, associated with a 30.1 inch 
high over the southern plains. this ridge is kicked east by a 29.0 
inch low that transits northern ontario sunday, reaching northwest 
quebec sunday night into monday as a secondary 29.1 inch low trails 
behind near the northern shores of lake superior. the low exits the 
area monday afternoon before being replaced by a 30.3 inch high over 
northern ontario tuesday. the high slowly moves into quebec on 
wednesday as 29.6 low pressure moves across the southern great lakes 
basin. thursday morning, lake superior will be situated between 29.4 
inch low pressure over new england and 30.3 inch high pressure 
broadly spanning the plains.



lsz263-072100-
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 sat mar 7 2026

...gale warning in effect from late tonight through sunday
afternoon...

.early this morning...north winds 15 to 25 knots. patchy fog.
rain showers, possibly mixed with snow and sleet. waves calm to
2 feet building to 1 to 3 feet. 
.today...north winds 15 to 25 knots becoming northwest 10 to
20 knots by late morning, then becoming west 15 to 25 knots by
mid afternoon. patchy fog in the morning. snow showers, possibly
mixed with rain in the morning. waves building to 2 to 4 feet,
then subsiding to calm to 2 feet. 
.tonight...southwest winds 20 to 30 knots increasing to gales to
40 knots by midnight. a slight chance of rain and snow showers
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 by mid afternoon. waves building to 8 to 11 feet
occasionally to 14 feet, then subsiding to 3 to 6 feet
occasionally to 8 feet. 
.sunday night...southwest winds 15 to 25 knots increasing to
20 to 30 knots after midnight. a slight chance of rain showers in
the evening. waves subsiding to 3 to 6 feet occasionally to
8 feet. 
.monday...west winds 15 to 25 knots. waves subsiding to 2 to
4 feet. 
.monday night...northwest winds 10 to 20 knots becoming northeast
15 to 25 knots after midnight. waves subsiding to calm to 2 feet.
.tuesday...northeast winds 15 to 25 knots increasing to gales to
35 knots. a chance of snow showers. waves building to 7 to
10 feet occasionally to 13 feet. 
.wednesday...northeast gales to 35 knots becoming north 15 to
25 knots. waves building to 8 to 11 feet occasionally to 14 feet,
then subsiding to 3 to 5 feet occasionally to 7 feet. 

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