fzus63 kdtx 050154
glflh 
expires:202605051000;;027983

open lake forecast for lake huron
national weather service detroit/pontiac mi
954 pm edt mon may 4 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...north flow turns lighter and more variable tomorrow
afternoon in the wake of a cold front. another low pressure system
organizes well south of the area through wednesday, favoring the 
gradual development of northeast winds. as this low moves over the
northeast mid to late week, northeast winds will back from the 
northeast to northerly, and eventually take on a more westerly 
component by thursday.


lhz361-051000-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
954 pm edt mon may 4 2026

.rest of tonight...north winds 5 to 10 knots becoming west 10 to
15 knots after midnight. waves 2 to 4 feet subsiding to 1 to
3 feet after midnight. 
.tuesday...west winds 10 to 15 knots increasing to 15 to 20 knots
in the late morning and afternoon. waves 2 to 4 feet. 
.tuesday night...west winds 10 to 15 knots becoming northwest
5 to 10 knots in the late evening and overnight. waves 2 to
4 feet subsiding to 1 to 3 feet in the late evening and
overnight. 
.wednesday...west winds 5 to 10 knots increasing to 10 to
15 knots early in the afternoon. waves 2 feet or less. 
.wednesday night...northwest winds 10 to 15 knots decreasing to
5 to 10 knots in the late evening and overnight. waves 1 to
3 feet. 
.thursday...west winds 5 to 10 knots backing to the southwest
late in the evening. waves 2 feet or less. 
.friday...west winds 5 to 10 knots backing to the south early in
the evening...then veering to the west by midnight. waves 2 feet
or less. 
.saturday...west winds 5 to 10 knots increasing to 10 to 15 knots
by midnight. waves 1 to 3 feet. 


$$

fzus63 kdtx 050154
glflh 
expires:202605051000;;027984

open lake forecast for lake huron
national weather service detroit/pontiac mi
954 pm edt mon may 4 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...north flow turns lighter and more variable tomorrow
afternoon in the wake of a cold front. another low pressure system
organizes well south of the area through wednesday, favoring the 
gradual development of northeast winds. as this low moves over the
northeast mid to late week, northeast winds will back from the 
northeast to northerly, and eventually take on a more westerly 
component by thursday.


lhz362-363-051000-
lake huron from presque isle light to sturgeon point mi beyond
5nm off shore-
lake huron from sturgeon point to alabaster mi beyond 5nm off
shore-
954 pm edt mon may 4 2026

.rest of tonight...north winds 10 to 15 knots backing to the
northwest after midnight...then becoming west 5 to 10 knots early
in the morning. waves 3 to 5 feet. 
.tuesday...west winds 5 to 10 knots backing to the southwest
early in the afternoon...then veering to the southwest 5 to
10 knots late in the afternoon. waves 2 to 4 feet. 
.tuesday night...north winds 5 to 10 knots. waves 2 to 4 feet
subsiding to 1 to 3 feet in the late evening and overnight. 
.wednesday...north winds 5 to 10 knots. waves 2 feet or less. 
.wednesday night...north winds 5 to 10 knots backing to the
northwest after midnight. waves 1 to 3 feet. 
.thursday...west winds 5 to 10 knots backing to the east late in
the afternoon...then veering to the south late in the evening.
waves 2 feet or less. 
.friday...west winds 5 to 10 knots backing to the southeast early
in the evening...then veering to the south by midnight. waves
2 feet or less. 
.saturday...west winds 5 to 10 knots backing to the southeast
early in the evening...then becoming west 10 to 15 knots by
midnight. waves 1 to 3 feet. 


$$

fzus63 kdtx 050154
glflh 
expires:202605051000;;027985

open lake forecast for lake huron
national weather service detroit/pontiac mi
954 pm edt mon may 4 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...north flow turns lighter and more variable tomorrow
afternoon in the wake of a cold front. another low pressure system
organizes well south of the area through wednesday, favoring the 
gradual development of northeast winds. as this low moves over the
northeast mid to late week, northeast winds will back from the 
northeast to northerly, and eventually take on a more westerly 
component by thursday.


lhz462>464-051000-
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-
954 pm edt mon may 4 2026

.rest of tonight...south winds 15 to 20 knots becoming southwest
10 to 15 knots after midnight...then veering to the northwest
early in the morning. waves 3 to 5 feet. 
.tuesday...north winds 5 to 10 knots backing to the west in the
late morning and early afternoon...then backing to the southeast
late in the afternoon. waves 1 to 3 feet. 
.tuesday night...southeast winds 5 to 10 knots backing to the
northeast in the late evening and overnight. waves 2 feet or
less. 
.wednesday...north winds 5 to 10 knots. waves 2 feet or less. 
.wednesday night...north winds 5 to 10 knots early in the evening
becoming light and variable. waves 2 feet or less. 
.thursday...north winds 5 to 10 knots veering to the northeast
late in the afternoon...then backing to the southwest late in the
evening. waves 2 feet or less. 
.friday...west winds 5 to 10 knots backing to the east early in
the evening...then veering to the south by midnight. waves 2 feet
or less. 
.saturday...southwest winds 5 to 10 knots backing to the
southeast early in the evening...then backing to the southeast
5 to 10 knots by midnight. a chance of showers early in the
evening. waves 2 feet or less. 


$$

fzus63 kmkx 050205
glflm 
expires:202605050930;;028392

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
905 pm cdt mon may 4 2026

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

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

.synopsis...

a cold front will push southeast across the southern portions of 
the lake into the overnight hours, shifting gusty southwest winds
to the west northwest. these winds will weaken overnight as well.
the cold front is in association with low pressure around 29.0 
inches moving east across james bay through tuesday.

west to northwest winds then persist through the first half of 
tuesday. winds will become light and variable tuesday afternoon
and night, as a weak surface ridge passes over the lake. mainly
light to modest winds are expected wednesday afternoon and night,
before south to southwest winds return thursday into friday.


lmz261-362-364-366-563-565-567-868-050930-
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-
905 pm cdt mon may 4 2026

sheboygan wi to pentwater mi north...

.rest of tonight...northwest winds 10 to 20 kt becoming north
15 to 25 kt, then becoming west 10 to 20 kt late. waves 4 to 6 ft
occasionally to 8 ft subsiding to 2 to 4 ft. 
.tuesday...west winds 10 to 20 kt becoming southwest 10 to 15 kt.
waves 1 to 3 ft. 
.tuesday night...southwest winds 10 to 15 kt veering to north
5 to 10 kt. waves 1 to 2 ft. 
.wednesday...northwest winds 10 to 15 kt backing to southwest
10 to 20 kt. waves 1 to 2 ft. 
.wednesday night...southwest winds 10 to 15 kt veering to north.
waves 1 to 2 ft. 
.thursday...southwest winds 5 to 10 kt increasing to 10 to 15 kt.
waves 1 to 2 ft. 
.thursday night...southwest winds 10 to 15 kt. waves 1 to 3 ft. 
.friday...southwest winds 10 to 15 kt. waves 1 to 3 ft. 
.saturday...west winds 10 to 15 kt becoming southwest. waves 2 to
4 ft.  

$$

fzus63 kmkx 050205
glflm 
expires:202605050930;;028393

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
905 pm cdt mon may 4 2026

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

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

.synopsis...

a cold front will push southeast across the southern portions of 
the lake into the overnight hours, shifting gusty southwest winds
to the west northwest. these winds will weaken overnight as well.
the cold front is in association with low pressure around 29.0 
inches moving east across james bay through tuesday.

west to northwest winds then persist through the first half of 
tuesday. winds will become light and variable tuesday afternoon
and night, as a weak surface ridge passes over the lake. mainly
light to modest winds are expected wednesday afternoon and night,
before south to southwest winds return thursday into friday.


lmz080-669-671-673-675-777-779-870-872-874-876-878-050930-
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-
905 pm cdt mon may 4 2026

sheboygan wi to pentwater mi south...

.rest of tonight...southwest winds 15 to 25 kt veering to
northwest 10 to 20 kt. scattered rain showers with isolated
thunderstorms through early evening, then scattered sprinkles
overnight. waves 3 to 5 ft subsiding to 2 to 4 ft. 
.tuesday...northwest winds 10 to 20 kt veering to east 10 to
15 kt. isolated rain showers in the morning. waves 1 to 3 ft
subsiding to 1 to 2 ft. 
.tuesday night...south winds 5 to 10 kt veering to northwest.
waves 1 to 2 ft. 
.wednesday...northwest winds 10 to 15 kt becoming north. waves
1 to 2 ft. 
.wednesday night...south winds 5 to 10 kt veering to west. waves
1 to 2 ft. 
.thursday...west winds 5 to 10 kt becoming southwest 10 to 15 kt.
waves 1 to 2 ft. 
.thursday night...south winds 10 to 15 kt becoming southwest.
waves 1 to 3 ft. 
.friday...southwest winds 10 to 15 kt. waves 1 to 3 ft. 
.saturday...west winds 10 to 20 kt becoming southwest 10 to
15 kt. waves 2 to 4 ft.  

$$

fzus63 kmqt 050209
glfls 
expires:202605051015;;028554

open lake forecast for lake superior
national weather service marquette mi
1009 pm edt mon may 4 2026

for waters beyond 5 nautical miles of shore on lake superior.

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

.synopsis...

a 29.1 inch low over far-northeast ontario will lift to james bay at 
29.2 inches by tuesday morning as 30.2 inch ridging builds east of 
the canadian rockies. the low continues lifting into far northern 
quebec through wednesday as high pressure over the canadian prairie 
splits and moves to the canadian four corners and the southern 
plains at 30.0 inches and 30.2 inches respectively. by thursday 
afternoon, lake superior will be between a 29.5 inch low over hudson 
bay, a 29.4 inch low over the mouth of the st lawrence river, a low 
of 29.7 inches over the black hills, a high of 30.1 inches over 
oklahoma, and a weak 29.9 inch high over the saskatchewan/manitoba 
line. the hudson bay and black hills lows will work to pass a 29.8 
inch trough over lake superior thursday night into friday, with the 
lows consolidating over quebec and the canadian maritimes by 
saturday morning, leaving remnant 29.8 inch troughing over lake 
superior.



lsz162-051015-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1009 pm edt mon may 4 2026 /909 pm cdt mon may 4 2026/

.rest of tonight...west winds 20 to 30 knots diminishing to 15 to
25 knots after midnight. waves 2 to 4 feet subsiding to 1 to
3 feet. 
.tuesday...west winds 15 to 25 knots diminishing to 10 to
20 knots late. waves building to 2 to 4 feet, then subsiding to
1 to 3 feet. 
.tuesday night...northwest winds 10 to 20 knots. waves subsiding
to calm to 2 feet. 
.wednesday...west winds 10 to 20 knots becoming southwest 5 to
15 knots by mid afternoon. waves calm to 2 feet. 
.wednesday night...west winds 5 to 15 knots. waves calm to
2 feet. 
.thursday...west winds 5 to 15 knots backing southwest by mid
afternoon. waves calm to 2 feet. 
.thursday night...west winds 5 to 15 knots. waves calm to 2 feet.
.friday...west winds 5 to 15 knots veering northwest. waves calm
to 2 feet. 
.saturday...west winds 5 to 15 knots veering northwest. waves
calm to 2 feet. 

$$

fzus63 kmqt 050209
glfls 
expires:202605051015;;028555

open lake forecast for lake superior
national weather service marquette mi
1009 pm edt mon may 4 2026

for waters beyond 5 nautical miles of shore on lake superior.

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

.synopsis...

a 29.1 inch low over far-northeast ontario will lift to james bay at 
29.2 inches by tuesday morning as 30.2 inch ridging builds east of 
the canadian rockies. the low continues lifting into far northern 
quebec through wednesday as high pressure over the canadian prairie 
splits and moves to the canadian four corners and the southern 
plains at 30.0 inches and 30.2 inches respectively. by thursday 
afternoon, lake superior will be between a 29.5 inch low over hudson 
bay, a 29.4 inch low over the mouth of the st lawrence river, a low 
of 29.7 inches over the black hills, a high of 30.1 inches over 
oklahoma, and a weak 29.9 inch high over the saskatchewan/manitoba 
line. the hudson bay and black hills lows will work to pass a 29.8 
inch trough over lake superior thursday night into friday, with the 
lows consolidating over quebec and the canadian maritimes by 
saturday morning, leaving remnant 29.8 inch troughing over lake 
superior.



lsz263-051015-
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-
1009 pm edt mon may 4 2026

.rest of tonight...west winds 15 to 25 knots veering northwest
after midnight, then becoming west 10 to 20 knots late. waves
3 to 6 feet occasionally to 8 feet. 
.tuesday...west winds 15 to 25 knots. waves building to 3 to
6 feet occasionally to 8 feet. 
.tuesday night...west winds 10 to 20 knots becoming northwest
5 to 15 knots after midnight. waves subsiding to calm to 2 feet. 
.wednesday...west winds 5 to 15 knots backing southwest by mid
afternoon. waves building to 1 to 3 feet. 
.wednesday night...west winds 5 to 15 knots. waves subsiding to
calm to 2 feet. 
.thursday...west winds 5 to 15 knots backing southwest by mid
afternoon. waves calm to 2 feet. 
.thursday night...southwest winds 5 to 15 knots veering west
after midnight. waves calm to 2 feet. 
.friday...southwest winds 5 to 15 knots veering northwest. waves
calm to 2 feet. 
.saturday...west winds 5 to 15 knots veering northwest. waves
calm to 2 feet. 

$$

fzus63 kmqt 050209
glfls 
expires:202605051015;;028556

open lake forecast for lake superior
national weather service marquette mi
1009 pm edt mon may 4 2026

for waters beyond 5 nautical miles of shore on lake superior.

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

.synopsis...

a 29.1 inch low over far-northeast ontario will lift to james bay at 
29.2 inches by tuesday morning as 30.2 inch ridging builds east of 
the canadian rockies. the low continues lifting into far northern 
quebec through wednesday as high pressure over the canadian prairie 
splits and moves to the canadian four corners and the southern 
plains at 30.0 inches and 30.2 inches respectively. by thursday 
afternoon, lake superior will be between a 29.5 inch low over hudson 
bay, a 29.4 inch low over the mouth of the st lawrence river, a low 
of 29.7 inches over the black hills, a high of 30.1 inches over 
oklahoma, and a weak 29.9 inch high over the saskatchewan/manitoba 
line. the hudson bay and black hills lows will work to pass a 29.8 
inch trough over lake superior thursday night into friday, with the 
lows consolidating over quebec and the canadian maritimes by 
saturday morning, leaving remnant 29.8 inch troughing over lake 
superior.



lsz264-051015-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
1009 pm edt mon may 4 2026

.rest of tonight...west winds 20 to 30 knots becoming northwest
15 to 25 knots after midnight, then backing west late. waves 4 to
7 feet occasionally to 9 feet subsiding to 3 to 5 feet
occasionally to 7 feet. 
.tuesday...west winds 15 to 25 knots. waves building to 3 to
6 feet occasionally to 8 feet. 
.tuesday night...west winds 10 to 20 knots becoming northwest
5 to 15 knots after midnight. waves subsiding to calm to 2 feet. 
.wednesday...northwest winds 5 to 15 knots backing west by mid
afternoon. waves calm to 2 feet. 
.wednesday night...west winds 5 to 15 knots. waves calm to
2 feet. 
.thursday...west winds 5 to 15 knots backing southwest by mid
afternoon. waves calm to 2 feet. 
.thursday night...southwest winds 5 to 15 knots veering west
after midnight. waves calm to 2 feet. 
.friday...west winds 5 to 15 knots veering northwest. waves calm
to 2 feet. 
.saturday...west winds 5 to 15 knots veering northwest. waves
calm to 2 feet. 

$$

fzus63 kmqt 050209
glfls 
expires:202605051015;;028557

open lake forecast for lake superior
national weather service marquette mi
1009 pm edt mon may 4 2026

for waters beyond 5 nautical miles of shore on lake superior.

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

.synopsis...

a 29.1 inch low over far-northeast ontario will lift to james bay at 
29.2 inches by tuesday morning as 30.2 inch ridging builds east of 
the canadian rockies. the low continues lifting into far northern 
quebec through wednesday as high pressure over the canadian prairie 
splits and moves to the canadian four corners and the southern 
plains at 30.0 inches and 30.2 inches respectively. by thursday 
afternoon, lake superior will be between a 29.5 inch low over hudson 
bay, a 29.4 inch low over the mouth of the st lawrence river, a low 
of 29.7 inches over the black hills, a high of 30.1 inches over 
oklahoma, and a weak 29.9 inch high over the saskatchewan/manitoba 
line. the hudson bay and black hills lows will work to pass a 29.8 
inch trough over lake superior thursday night into friday, with the 
lows consolidating over quebec and the canadian maritimes by 
saturday morning, leaving remnant 29.8 inch troughing over lake 
superior.



lsz265-051015-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
1009 pm edt mon may 4 2026

.rest of tonight...west winds 20 to 30 knots. waves 3 to 5 feet
occasionally to 7 feet subsiding to 1 to 3 feet, then building to
2 to 4 feet. 
.tuesday...west winds 20 to 30 knots diminishing to 15 to
25 knots late. waves 2 to 4 feet. 
.tuesday night...west winds 15 to 25 knots diminishing to 10 to
20 knots after midnight. waves subsiding to calm to 2 feet. 
.wednesday...west winds 10 to 20 knots. waves calm to 2 feet. 
.wednesday night...west winds 10 to 20 knots. waves calm to
2 feet. 
.thursday...west winds 10 to 20 knots. waves calm to 2 feet. 
.thursday night...southwest winds 5 to 15 knots becoming west
10 to 20 knots after midnight. waves calm to 2 feet. 
.friday...northwest winds 10 to 20 knots becoming west 5 to
15 knots. waves calm to 2 feet. 
.saturday...northwest winds 10 to 20 knots backing west. waves
calm to 2 feet. 

$$

fzus63 kmqt 050209
glfls 
expires:202605051015;;028558

open lake forecast for lake superior
national weather service marquette mi
1009 pm edt mon may 4 2026

for waters beyond 5 nautical miles of shore on lake superior.

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

.synopsis...

a 29.1 inch low over far-northeast ontario will lift to james bay at 
29.2 inches by tuesday morning as 30.2 inch ridging builds east of 
the canadian rockies. the low continues lifting into far northern 
quebec through wednesday as high pressure over the canadian prairie 
splits and moves to the canadian four corners and the southern 
plains at 30.0 inches and 30.2 inches respectively. by thursday 
afternoon, lake superior will be between a 29.5 inch low over hudson 
bay, a 29.4 inch low over the mouth of the st lawrence river, a low 
of 29.7 inches over the black hills, a high of 30.1 inches over 
oklahoma, and a weak 29.9 inch high over the saskatchewan/manitoba 
line. the hudson bay and black hills lows will work to pass a 29.8 
inch trough over lake superior thursday night into friday, with the 
lows consolidating over quebec and the canadian maritimes by 
saturday morning, leaving remnant 29.8 inch troughing over lake 
superior.



lsz266-051015-
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-
1009 pm edt mon may 4 2026

.rest of tonight...west winds 20 to 30 knots. waves 4 to 8 feet
occasionally to 10 feet. 
.tuesday...west winds 20 to 30 knots diminishing to 15 to
25 knots in the afternoon. waves subsiding to 3 to 6 feet
occasionally to 8 feet. 
.tuesday night...west winds 15 to 25 knots becoming northwest
10 to 20 knots late. waves subsiding to 1 to 3 feet. 
.wednesday...northwest winds 10 to 20 knots backing west by mid
afternoon. waves subsiding to calm to 2 feet, then building to
1 to 3 feet. 
.wednesday night...west winds 5 to 15 knots. waves calm to
2 feet. 
.thursday...west winds 5 to 15 knots. waves calm to 2 feet. 
.thursday night...southwest winds 5 to 15 knots increasing to
10 to 20 knots after midnight. waves calm to 2 feet. 
.friday...west winds 5 to 15 knots. waves calm to 2 feet. 
.saturday...west winds 10 to 20 knots veering northwest. waves
building to 1 to 3 feet, then subsiding to calm to 2 feet. 

$$

fzus63 kmqt 050209
glfls 
expires:202605051015;;028559

open lake forecast for lake superior
national weather service marquette mi
1009 pm edt mon may 4 2026

for waters beyond 5 nautical miles of shore on lake superior.

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

.synopsis...

a 29.1 inch low over far-northeast ontario will lift to james bay at 
29.2 inches by tuesday morning as 30.2 inch ridging builds east of 
the canadian rockies. the low continues lifting into far northern 
quebec through wednesday as high pressure over the canadian prairie 
splits and moves to the canadian four corners and the southern 
plains at 30.0 inches and 30.2 inches respectively. by thursday 
afternoon, lake superior will be between a 29.5 inch low over hudson 
bay, a 29.4 inch low over the mouth of the st lawrence river, a low 
of 29.7 inches over the black hills, a high of 30.1 inches over 
oklahoma, and a weak 29.9 inch high over the saskatchewan/manitoba 
line. the hudson bay and black hills lows will work to pass a 29.8 
inch trough over lake superior thursday night into friday, with the 
lows consolidating over quebec and the canadian maritimes by 
saturday morning, leaving remnant 29.8 inch troughing over lake 
superior.



lsz267-051015-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
1009 pm edt mon may 4 2026

.rest of tonight...west winds 20 to 30 knots. waves 4 to 7 feet
occasionally to 9 feet. 
.tuesday...west winds 20 to 30 knots diminishing to 15 to
25 knots late. waves subsiding to 3 to 6 feet occasionally to
8 feet. 
.tuesday night...west winds 15 to 25 knots diminishing to 10 to
20 knots after midnight. waves subsiding to 1 to 3 feet. 
.wednesday...west winds 10 to 20 knots. waves subsiding to calm
to 2 feet. 
.wednesday night...west winds 10 to 20 knots. waves calm to
2 feet. 
.thursday...west winds 10 to 20 knots diminishing to 5 to
15 knots by mid afternoon. waves calm to 2 feet. 
.thursday night...west winds 5 to 15 knots backing southwest
after midnight. waves calm to 2 feet. 
.friday...west winds 5 to 15 knots. waves calm to 2 feet. 
.saturday...west winds 10 to 20 knots. waves building to 1 to
3 feet. 

$$