fzus63 kdtx 061449
glflh 
expires:202603062300;;729454

open lake forecast for lake huron
national weather service detroit/pontiac mi
949 am est fri mar 6 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...another 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.


lhz361-362-062300-
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-
949 am est fri mar 6 2026

.rest of today...southeast winds 10 to 20 knots. numerous showers
in the afternoon. waves 2 to 4 feet. 
.tonight...southeast winds 10 to 15 knots decreasing to 5 to
10 knots after midnight...then becoming south 10 to 15 knots
early in the morning. showers in the evening...then showers and
scattered thunderstorms after midnight. waves 2 to 4 feet. 
.saturday...south winds 15 to 20 knots. gusts to 30 knots in the
late morning and afternoon. a chance of showers and scattered
thunderstorms in the morning. widespread dense fog in the
morning. waves 5 to 7 feet. waves occasionally around 10 feet. 
.saturday night...west winds 15 to 20 knots with gusts to around
30 knots decreasing to 10 to 15 knots in the late evening and
overnight. 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 late in the evening. waves 5 to 7 feet. waves
occasionally around 10 feet. 
.monday...southwest winds 20 to 25 knots with gusts to around
30 knots decreasing to 15 to 20 knots in the late morning and
early afternoon...then becoming west 10 to 15 knots early in the
evening veering to the northwest by midnight. waves 5 to 7 feet
subsiding to 2 to 4 feet by midnight. waves occasionally around
10 feet. 
.tuesday...northwest winds 10 to 15 knots veering to the north in
the late morning and early afternoon...then becoming northeast
15 to 20 knots early in the evening increasing to 20 to 25 knots
by midnight. a chance of rain and snow early in the evening.
rain...snow and freezing rain likely by midnight. waves 3 to
5 feet building to 8 to 12 feet. waves occasionally around
15 feet. 

wave heights are for ice free areas.

$$

fzus63 kdtx 061449
glflh 
expires:202603062300;;729455

open lake forecast for lake huron
national weather service detroit/pontiac mi
949 am est fri mar 6 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...another 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.


lhz363-462-062300-
lake huron from sturgeon point to alabaster mi beyond 5nm off
shore-
lake huron from port austin to harbor beach beyond 5nm off shore-
949 am est fri mar 6 2026

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

waves omitted due to ice coverage.

$$

fzus63 kmkx 061940
glflm 
expires:202603070415;;742833

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
140 pm cst fri mar 6 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 in the central great plains will 
continue to track northwards into the upper mississippi river 
valley by this evening. southwesterly winds will prevail ahead of 
this low through the evening along with widespread rain and 
embedded thunderstorms will accompany the approaching low today. 
light to modest winds and milder temps will also create conditions
favorable for marine fog to develop at times through this evening
into saturday morning. thus a marine dense fog advisory is in 
effect for periodic drops in visibilities to less than 1 nm at 
times. then the low will move near or just north of lake michigan 
tonight into saturday morning and drag a cold front across the 
upper great lakes into saturday morning. will see breezy west to 
northwesterly winds behind the front and usher out the marine fog 
by late saturday morning. westerly winds will prevail through 
saturday night before increasing and turning more southwesterly 
for sunday into monday as a series of 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.


lmz080-669-671-673-675-777-779-870-872-874-876-878-070415-
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-
140 pm cst fri mar 6 2026

sheboygan wi to pentwater mi south...

...dense fog advisory in effect until 9 am cst saturday...

.tonight...south winds 10 to 20 kt increasing to 30 kt.
widespread dense fog. chance of rain showers and thunderstorms
this evening, then rain showers with a chance of thunderstorms
overnight. waves 3 to 5 ft building to 5 to 8 ft occasionally to
10 ft. 
.saturday...south winds to 30 kt becoming southwest late in the
morning, then becoming west 15 to 25 kt early in the afternoon
diminishing to 10 to 20 kt late. patchy dense fog in the morning.
chance of rain showers and slight chance of thunderstorms 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 4 to 6 ft occasionally to 8 ft subsiding to 3 to
5 ft. 
.sunday...southwest winds to 30 kt. waves 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. 
.monday night...northwest winds 10 to 20 kt veering to northeast
15 to 25 kt. waves 3 to 5 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. waves 5 to 8 ft occasionally to 10 ft. 
.wednesday...north winds to 30 kt. chance of rain. waves 8 to
12 ft occasionally to 16 ft.  

$$

fzus63 kmkx 061940
glflm 
expires:202603070415;;742832

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
140 pm cst fri mar 6 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 in the central great plains will 
continue to track northwards into the upper mississippi river 
valley by this evening. southwesterly winds will prevail ahead of 
this low through the evening along with widespread rain and 
embedded thunderstorms will accompany the approaching low today. 
light to modest winds and milder temps will also create conditions
favorable for marine fog to develop at times through this evening
into saturday morning. thus a marine dense fog advisory is in 
effect for periodic drops in visibilities to less than 1 nm at 
times. then the low will move near or just north of lake michigan 
tonight into saturday morning and drag a cold front across the 
upper great lakes into saturday morning. will see breezy west to 
northwesterly winds behind the front and usher out the marine fog 
by late saturday morning. westerly winds will prevail through 
saturday night before increasing and turning more southwesterly 
for sunday into monday as a series of 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.


lmz261-362-364-366-563-565-567-868-070415-
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-
140 pm cst fri mar 6 2026

sheboygan wi to pentwater mi north...

...dense fog advisory in effect until 9 am cst saturday...

.tonight...south winds 10 to 20 kt increasing to 30 kt.
widespread dense fog. chance of rain showers and thunderstorms
this evening, then rain showers with a chance of thunderstorms
overnight. waves 3 to 5 ft building to 5 to 8 ft occasionally to
10 ft. 
.saturday...southwest winds to 30 kt veering to northwest 15 to
25 kt. patchy dense fog in the morning, then patchy fog in the
afternoon. chance of rain showers and slight chance of
thunderstorms in the morning, then slight chance of rain showers
in the afternoon. waves 5 to 8 ft occasionally to 10 ft subsiding
to 4 to 6 ft occasionally to 8 ft. 
.saturday night...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 3 to 5 ft building
to 4 to 6 ft occasionally to 8 ft. 
.sunday...southwest gales to 35 kt diminishing to 30 kt. waves
7 to 10 ft occasionally to 13 ft. 
.sunday night...southwest winds to 30 kt increasing to gales to
35 kt. waves 6 to 9 ft occasionally to 12 ft. 
.monday...southwest gales to 35 kt diminishing to 15 to 25 kt in
the afternoon. waves 6 to 9 ft occasionally to 12 ft. 
.monday night...north winds 10 to 20 kt becoming northeast 15 to
25 kt. waves 3 to 5 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. waves 4 to 7 ft occasionally to 9 ft building to
5 to 8 ft occasionally to 10 ft. 
.wednesday...northeast winds to 30 kt becoming north 15 to 25 kt.
chance of rain, snow and light freezing rain. waves 8 to 12 ft
occasionally to 16 ft subsiding to 8 to 11 ft occasionally to
14 ft.  

$$

fzus63 kmqt 061500
glfls 
expires:202603062100;;729929

open lake forecast for lake superior
national weather service marquette mi
1000 am est fri mar 6 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...

lake superior is currently between a 30.7 inch high over eastern 
quebec and a 29.6 inch low over western kansas. this low will 
elongate across the mississippi river valley today, then stretch 
over lake superior at 29.7 inches tonight. the low then deepens to 
29.4 inches near the ontario/quebec line late saturday morning. a 
weak 29.8 inch ridge will move over the lake saturday evening as the 
low departs into newfoundland. this ridge is kicked east by a 29.1 
inch low that transits northern ontario sunday, reaching northwest 
quebec sunday night into monday as a secondary 29.0 inch low trails 
behind near the northern shores of lake superior. the low slowly 
exits the area monday before being replaced by a 30.3 inch high over 
northern ontario tuesday. the high slowly moves into quebec 
wednesday as low pressure moves into the lower midwest.



lsz264-062100-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
1000 am est fri mar 6 2026

.rest of today...southeast winds 5 to 15 knots. patchy fog.
flurries late in the morning. a chance of rain showers and
drizzle in the afternoon. waves 2 to 4 feet. 
.tonight...southeast winds 5 to 15 knots backing north by
midnight, then increasing to 15 to 25 knots late. a chance of
rain showers in the evening, then rain showers, possibly mixed
with snow and freezing rain after midnight. waves subsiding to
calm to 2 feet, then building to 2 to 4 feet. 
.saturday...north winds 20 to 30 knots becoming northwest 15 to
25 knots by mid afternoon. snow showers likely, possibly mixed
with rain showers in the morning. waves building to 4 to 7 feet
occasionally to 9 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 subsiding to 1 to 3 feet,
then building to 8 to 11 feet occasionally to 14 feet. 
.sunday...southwest gales to 45 knots. waves subsiding to 4 to
7 feet occasionally to 9 feet. 
.sunday night...southwest gales to 40 knots. 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 40 knots becoming north 10 to 20 knots.
waves subsiding to 2 to 4 feet. 
.tuesday...northeast winds 15 to 25 knots becoming east gales to
35 knots. a chance of snow showers. waves building to 9 to
12 feet occasionally to 15 feet. 

$$

fzus63 kmqt 061500
glfls 
expires:202603062100;;729930

open lake forecast for lake superior
national weather service marquette mi
1000 am est fri mar 6 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...

lake superior is currently between a 30.7 inch high over eastern 
quebec and a 29.6 inch low over western kansas. this low will 
elongate across the mississippi river valley today, then stretch 
over lake superior at 29.7 inches tonight. the low then deepens to 
29.4 inches near the ontario/quebec line late saturday morning. a 
weak 29.8 inch ridge will move over the lake saturday evening as the 
low departs into newfoundland. this ridge is kicked east by a 29.1 
inch low that transits northern ontario sunday, reaching northwest 
quebec sunday night into monday as a secondary 29.0 inch low trails 
behind near the northern shores of lake superior. the low slowly 
exits the area monday before being replaced by a 30.3 inch high over 
northern ontario tuesday. the high slowly moves into quebec 
wednesday as low pressure moves into the lower midwest.



lsz265-062100-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
1000 am est fri mar 6 2026

.rest of today...southeast winds 10 to 20 knots. patchy fog.
sprinkles, a slight chance of drizzle and flurries late in the
morning. a chance of rain showers in the afternoon. waves 1 to
3 feet. 
.tonight...southeast winds 10 to 20 knots veering south by
midnight, then veering northwest late. a chance of rain showers
in the evening. a slight chance of thunderstorms. rain showers
likely after midnight. waves subsiding to calm to 2 feet. 
.saturday...north winds 20 to 30 knots increasing to 30 knots
with a few gale force gusts to 35 knots possible by late morning,
then becoming northwest 20 to 30 knots by mid afternoon. snow
showers, possibly mixed with rain and sleet likely in the
morning, then a slight 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. 
.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 subsiding to 1 to
3 feet. 
.sunday night...southwest winds 20 to 30 knots increasing to
gales to 40 knots after midnight. waves building to 3 to 5 feet
occasionally to 7 feet. 
.monday...west gales to 40 knots becoming north 15 to 25 knots.
waves subsiding to calm to 2 feet, then building to 3 to 5 feet
occasionally to 7 feet. 
.tuesday...northeast winds 15 to 25 knots becoming east gales to
35 knots. a chance of snow showers. waves building to 9 to
12 feet occasionally to 15 feet. 

$$

fzus63 kmqt 061500
glfls 
expires:202603062100;;729931

open lake forecast for lake superior
national weather service marquette mi
1000 am est fri mar 6 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...

lake superior is currently between a 30.7 inch high over eastern 
quebec and a 29.6 inch low over western kansas. this low will 
elongate across the mississippi river valley today, then stretch 
over lake superior at 29.7 inches tonight. the low then deepens to 
29.4 inches near the ontario/quebec line late saturday morning. a 
weak 29.8 inch ridge will move over the lake saturday evening as the 
low departs into newfoundland. this ridge is kicked east by a 29.1 
inch low that transits northern ontario sunday, reaching northwest 
quebec sunday night into monday as a secondary 29.0 inch low trails 
behind near the northern shores of lake superior. the low slowly 
exits the area monday before being replaced by a 30.3 inch high over 
northern ontario tuesday. the high slowly moves into quebec 
wednesday as low pressure moves into the lower midwest.



lsz266-062100-
lake superior east of a line from manitou island to marquette mi
and west of a line from grand marais mi to the us/canadian border
beyond 5nm from shore-
1000 am est fri mar 6 2026

.rest of today...south winds 15 to 25 knots backing southeast.
patchy fog. sprinkles and flurries late in the morning. a chance
of rain showers in the afternoon. waves 2 to 4 feet. 
.tonight...southeast winds 10 to 20 knots veering south by
midnight. a chance of rain showers in the evening. a slight
chance of thunderstorms. rain showers after midnight. waves
subsiding to calm to 2 feet, then building to 1 to 3 feet. 
.saturday...north winds 20 to 30 knots backing northwest by mid
afternoon. rain showers, possibly mixed with snow in the morning,
then a slight chance of rain and snow showers in the afternoon.
waves building to 5 to 8 feet occasionally to 10 feet. 
.saturday night...west winds 15 to 25 knots becoming southwest
gales to 40 knots 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. waves building to 8 to
11 feet occasionally to 14 feet, then subsiding to 4 to 7 feet
occasionally to 9 feet. 
.sunday night...southwest gales to 40 knots. waves subsiding to
3 to 6 feet occasionally to 8 feet, then building to 6 to 9 feet
occasionally to 11 feet. 
.monday...west gales to 40 knots becoming north 15 to 25 knots.
waves subsiding to 3 to 6 feet occasionally to 8 feet. 
.tuesday...northeast winds 15 to 25 knots becoming east gales to
35 knots. a chance of snow showers. waves building to 9 to
12 feet occasionally to 15 feet. 

$$

fzus63 kmqt 061500
glfls 
expires:202603062100;;729932

open lake forecast for lake superior
national weather service marquette mi
1000 am est fri mar 6 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...

lake superior is currently between a 30.7 inch high over eastern 
quebec and a 29.6 inch low over western kansas. this low will 
elongate across the mississippi river valley today, then stretch 
over lake superior at 29.7 inches tonight. the low then deepens to 
29.4 inches near the ontario/quebec line late saturday morning. a 
weak 29.8 inch ridge will move over the lake saturday evening as the 
low departs into newfoundland. this ridge is kicked east by a 29.1 
inch low that transits northern ontario sunday, reaching northwest 
quebec sunday night into monday as a secondary 29.0 inch low trails 
behind near the northern shores of lake superior. the low slowly 
exits the area monday before being replaced by a 30.3 inch high over 
northern ontario tuesday. the high slowly moves into quebec 
wednesday as low pressure moves into the lower midwest.



lsz267-062100-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
1000 am est fri mar 6 2026

.rest of today...southeast winds 15 to 25 knots. areas of fog.
sprinkles and flurries late in the morning. a chance of rain
showers in the afternoon. waves 2 to 4 feet subsiding to 1 to
3 feet, then building to 2 to 4 feet. 
.tonight...southeast winds 15 to 25 knots diminishing to 10 to
20 knots by midnight, then veering south late. a chance of rain
showers in the evening, then rain showers and a slight chance of
thunderstorms after midnight. waves subsiding to calm to 2 feet. 
.saturday...north winds 15 to 25 knots increasing to 20 to
30 knots. rain showers in the morning. a slight chance of snow
showers. a slight chance of rain showers in the afternoon. waves
building to 4 to 7 feet occasionally to 9 feet. 
.saturday night...west winds 10 to 20 knots becoming southwest
gales to 35 knots after midnight. waves subsiding to 2 to 4 feet,
then building to 5 to 8 feet occasionally to 10 feet. 
.sunday...southwest gales to 40 knots. a slight chance of rain
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...southwest gales to 40 knots. a chance of rain
showers. 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 40 knots becoming north 10 to 20 knots.
waves building to 6 to 9 feet occasionally to 11 feet, then
subsiding to 3 to 6 feet occasionally to 8 feet. 
.tuesday...northeast winds 10 to 20 knots becoming east gales to
35 knots. a chance of snow showers. waves subsiding to 2 to
4 feet, then building to 5 to 8 feet occasionally to 10 feet. 

$$

fzus63 kmqt 061500
glfls 
expires:202603062100;;729927

open lake forecast for lake superior
national weather service marquette mi
1000 am est fri mar 6 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...

lake superior is currently between a 30.7 inch high over eastern 
quebec and a 29.6 inch low over western kansas. this low will 
elongate across the mississippi river valley today, then stretch 
over lake superior at 29.7 inches tonight. the low then deepens to 
29.4 inches near the ontario/quebec line late saturday morning. a 
weak 29.8 inch ridge will move over the lake saturday evening as the 
low departs into newfoundland. this ridge is kicked east by a 29.1 
inch low that transits northern ontario sunday, reaching northwest 
quebec sunday night into monday as a secondary 29.0 inch low trails 
behind near the northern shores of lake superior. the low slowly 
exits the area monday before being replaced by a 30.3 inch high over 
northern ontario tuesday. the high slowly moves into quebec 
wednesday as low pressure moves into the lower midwest.



lsz162-062100-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1000 am est fri mar 6 2026 /900 am cst fri mar 6 2026/

.rest of today...east winds 5 to 15 knots backing northeast by
mid afternoon. patchy fog. a chance of drizzle and flurries late
in the morning. a chance of rain showers. waves calm to 2 feet. 
.tonight...northeast winds 5 to 15 knots backing northwest by
midnight, then becoming north 10 to 20 knots late. a chance of
rain showers in the evening, then snow showers with rain showers
after midnight. waves calm to 2 feet. 
.saturday...north winds 15 to 25 knots becoming northwest 10 to
20 knots by late morning, then backing southwest by mid
afternoon. a chance of snow showers, possibly mixed with rain in
the morning. waves calm to 2 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 20 to
30 knots in the afternoon. waves subsiding to 3 to 5 feet
occasionally to 7 feet. 
.sunday night...southwest winds 20 to 30 knots. waves subsiding
to 2 to 4 feet, then building to 3 to 5 feet occasionally to
7 feet. 
.monday...west winds 20 to 30 knots becoming north 10 to
20 knots. waves subsiding to calm to 2 feet, then building to
1 to 3 feet. 
.tuesday...east winds 20 to 30 knots. a chance of snow showers.
waves building to 6 to 9 feet occasionally to 11 feet. 

$$

fzus63 kmqt 061500
glfls 
expires:202603062100;;729928

open lake forecast for lake superior
national weather service marquette mi
1000 am est fri mar 6 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...

lake superior is currently between a 30.7 inch high over eastern 
quebec and a 29.6 inch low over western kansas. this low will 
elongate across the mississippi river valley today, then stretch 
over lake superior at 29.7 inches tonight. the low then deepens to 
29.4 inches near the ontario/quebec line late saturday morning. a 
weak 29.8 inch ridge will move over the lake saturday evening as the 
low departs into newfoundland. this ridge is kicked east by a 29.1 
inch low that transits northern ontario sunday, reaching northwest 
quebec sunday night into monday as a secondary 29.0 inch low trails 
behind near the northern shores of lake superior. the low slowly 
exits the area monday before being replaced by a 30.3 inch high over 
northern ontario tuesday. the high slowly moves into quebec 
wednesday as low pressure moves into the lower midwest.



lsz263-062100-
lake superior from saxon harbor wi to upper entrance to portage
canal mi 5nm off shore to the us/canadian border including isle
royale national park-
1000 am est fri mar 6 2026

.rest of today...southeast winds 5 to 15 knots backing east by
mid afternoon. patchy fog. sprinkles, a slight chance of drizzle
and flurries late in the morning. a chance of rain showers in the
afternoon. waves calm to 2 feet. 
.tonight...southeast winds 5 to 15 knots becoming north 10 to
20 knots by midnight, then increasing to 15 to 25 knots late. a
chance of rain showers in the evening, then rain showers likely
with pockets of snow showers after midnight. waves building to
2 to 4 feet. 
.saturday...north winds 15 to 25 knots diminishing to 10 to
20 knots by late morning, then becoming west 15 to 25 knots by
mid afternoon. snow showers likely, possibly mixed with rain
showers in the morning. waves building to 3 to 6 feet
occasionally to 8 feet, then subsiding to 1 to 3 feet. 
.saturday night...southwest gales to 40 knots. waves building to
7 to 10 feet occasionally to 13 feet. 
.sunday...southwest gales to 40 knots. waves subsiding to 3 to
6 feet occasionally to 8 feet. 
.sunday night...southwest winds 20 to 30 knots increasing to
gales to 35 knots after midnight. waves building to 4 to 7 feet
occasionally to 9 feet. 
.monday...west gales to 35 knots becoming north 15 to 25 knots.
waves subsiding to 1 to 3 feet, then building to 2 to 4 feet. 
.tuesday...east winds 15 to 25 knots increasing to gales to
35 knots. a chance of snow showers. waves building to 9 to
12 feet occasionally to 15 feet. 

$$