fzus63 kdtx 270837
glflh 
expires:202602271645;;327861

open lake forecast for lake huron
national weather service detroit/pontiac mi
337 am est fri feb 27 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...strong northern ontario low pressure, 29.00 inches,
sends an arctic cold front through the central great lakes tonight
bringing the next chances to see northwest gales as well as areas
of freezing spray. high pressure, 30.70 inches, then follows for 
the latter half of the weekend.



lhz361-362-271645-
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-
337 am est fri feb 27 2026

...gale warning in effect from this evening through saturday
morning...

.today...southwest winds 10 to 15 knots becoming south 15 to
20 knots late in the afternoon. waves 2 to 4 feet building to
4 to 6 feet in the afternoon. waves occasionally around 8 feet. 
.tonight...southwest winds 20 to 25 knots with gusts to 35 knot
gales veering to the west with gusts to 40 knot gales after
midnight...then increasing to 30 knots with gusts to 40 knot
gales early in the morning. freezing spray after midnight. waves
8 to 12 feet. waves occasionally around 15 feet. 
.saturday...west winds to 30 knots with gusts to 35 knot gales
becoming northwest 15 to 20 knots in the late morning and
afternoon. freezing spray. waves 8 to 12 feet. waves occasionally
around 15 feet. 
.saturday night...northwest winds 15 to 20 knots. freezing spray.
waves 4 to 6 feet. 
.sunday...north winds 10 to 15 knots becoming northwest 5 to
10 knots late in the morning...then backing to the west late in
the evening. waves 3 to 5 feet subsiding to 1 to 3 feet late in
the afternoon. waves occasionally around 8 feet. 
.monday...southwest winds 10 to 15 knots becoming south 15 to
20 knots. freezing spray by midnight. waves 1 to 3 feet building
to 5 to 7 feet. waves occasionally around 10 feet. 
.tuesday...south winds 15 to 20 knots decreasing to 10 to
15 knots . waves 4 to 6 feet. waves occasionally around 8 feet. 

wave heights are for ice free areas.

$$

fzus63 kdtx 270837
glflh 
expires:202602271645;;327862

open lake forecast for lake huron
national weather service detroit/pontiac mi
337 am est fri feb 27 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...strong northern ontario low pressure, 29.00 inches,
sends an arctic cold front through the central great lakes tonight
bringing the next chances to see northwest gales as well as areas
of freezing spray. high pressure, 30.70 inches, then follows for 
the latter half of the weekend.



lhz363-271645-
lake huron from sturgeon point to alabaster mi beyond 5nm off
shore-
337 am est fri feb 27 2026

.today...southwest winds 10 to 15 knots becoming south 15 to
20 knots late in the afternoon. waves 1 to 3 feet building to
3 to 5 feet in the afternoon. 
.tonight...southwest winds 20 to 25 knots becoming west 15 to
20 knots after midnight. gusts to 30 knots. waves 6 to 9 feet.
waves occasionally around 12 feet. 
.saturday...northwest winds 15 to 20 knots with gusts to around
30 knots decreasing to 10 to 15 knots early in the afternoon.
freezing spray. waves 6 to 9 feet. waves occasionally around
12 feet. 
.saturday night...northwest winds 10 to 15 knots increasing to
15 to 20 knots in the late evening and overnight. freezing spray
after midnight. waves 4 to 6 feet. waves occasionally around
8 feet. 
.sunday...northwest winds 10 to 15 knots becoming west late in
the evening. waves 3 to 5 feet subsiding to 1 to 3 feet late in
the afternoon. 
.monday...southwest winds 5 to 10 knots becoming south 10 to
15 knots until early evening...then increasing to 15 to 20 knots
by midnight. waves 1 to 3 feet building to 3 to 5 feet by
midnight. 
.tuesday...south winds 15 to 20 knots decreasing to 10 to
15 knots in the late morning and early afternoon...then becoming
southeast 5 to 10 knots early in the evening becoming southwest
10 to 15 knots by midnight. waves 3 to 5 feet subsiding to 1 to
3 feet early in the evening...then building to 2 to 4 feet by
midnight. 

wave heights are for ice free areas.

$$

fzus63 kdtx 270837
glflh 
expires:202602271645;;327863

open lake forecast for lake huron
national weather service detroit/pontiac mi
337 am est fri feb 27 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...strong northern ontario low pressure, 29.00 inches,
sends an arctic cold front through the central great lakes tonight
bringing the next chances to see northwest gales as well as areas
of freezing spray. high pressure, 30.70 inches, then follows for 
the latter half of the weekend.



lhz462>464-271645-
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-
337 am est fri feb 27 2026

.today...south winds 10 to 15 knots. waves 1 to 3 feet building
to 2 to 4 feet late in the afternoon. 
.tonight...southwest winds 15 to 20 knots with gusts to around
30 knots becoming west 10 to 15 knots early in the morning. waves
3 to 5 feet. 
.saturday...west winds 15 to 20 knots becoming northwest 10 to
15 knots in the late morning and afternoon. waves 4 to 6 feet.
waves occasionally around 8 feet. 
.saturday night...north winds 10 to 15 knots increasing to 15 to
20 knots after midnight. a chance of snow. waves 3 to 5 feet. 
.sunday...northwest winds 10 to 15 knots becoming north 5 to
10 knots late in the afternoon. waves 3 to 5 feet subsiding to
1 to 3 feet late in the afternoon. 
.monday...southeast winds 5 to 10 knots becoming south 10 to
15 knots by midnight. waves 1 to 3 feet. 
.tuesday...southeast winds 10 to 15 knots decreasing to 5 to
10 knots early in the evening...then backing to the north by
midnight. waves 1 to 3 feet. 

wave heights are for ice free areas.

$$

fzus63 kmkx 270908
glflm 
expires:202602271615;;329137

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
308 am cst fri feb 27 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...

southwest winds will become gusty today, ahead of an approaching 
cold front. winds will become west to northwest and remain gusty 
this evening and overnight, behind the cold front. a few gusts to 
gale force are expected in the northern third of the lake this 
afternoon and evening. breezy north to northwest winds are then 
expected to linger into the weekend. these winds will weaken by 
sunday night, as high pressure around 30.6 inches builds into the
upper midwest.


lmz261-362-364-366-563-565-567-868-271615-
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-
308 am cst fri feb 27 2026

sheboygan wi to pentwater mi north...

.today...southwest winds 10 to 20 kt increasing to 30 kt. a few 
gusts to 35 kt in the afternoon. waves 2 to 4 ft building to 6 to 
9 ft occasionally to 12 ft.
.tonight...west winds to 30 kt becoming northwest. a few gusts to
35 kt in the evening. freezing spray overnight. waves 6 to 9 ft 
occasionally to 12 ft.
.saturday...northwest winds 15 to 25 kt diminishing to 10 to
20 kt. chance of snow in the afternoon. waves 4 to 7 ft
occasionally to 9 ft subsiding to 3 to 5 ft. 
.saturday night...north winds 10 to 20 kt. waves 3 to 5 ft. 
.sunday...northwest winds 10 to 20 kt diminishing to 5 to 10 kt
in the afternoon. waves 3 to 5 ft subsiding to 1 to 3 ft. 
.sunday night...west winds 10 to 15 kt. waves 1 to 2 ft. 
.monday...southwest winds 10 to 20 kt. waves 1 to 3 ft building
to 2 to 4 ft. 
.tuesday...south winds 10 to 20 kt becoming southwest. waves 4 to
6 ft occasionally to 8 ft subsiding to 3 to 5 ft.  

$$

fzus63 kmkx 270908
glflm 
expires:202602271615;;329138

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
308 am cst fri feb 27 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...

southwest winds will become gusty today, ahead of an approaching 
cold front. winds will become west to northwest and remain gusty 
this evening and overnight, behind the cold front. a few gusts to 
gale force are expected in the northern third of the lake this 
afternoon and evening. breezy north to northwest winds are then 
expected to linger into the weekend. these winds will weaken by 
sunday night, as high pressure around 30.6 inches builds into the
upper midwest.


lmz080-669-671-673-675-777-779-870-872-874-876-878-271615-
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-
308 am cst fri feb 27 2026

sheboygan wi to pentwater mi south...

.today...southwest winds 10 to 20 kt increasing to 30 kt. waves
2 to 4 ft building to 5 to 8 ft occasionally to 10 ft. 
.tonight...west winds to 30 kt becoming northwest 15 to 25 kt.
waves 5 to 8 ft occasionally to 10 ft. 
.saturday...northwest winds 10 to 20 kt becoming north. snow
likely in the afternoon. waves 4 to 7 ft occasionally to 9 ft
subsiding to 3 to 5 ft. 
.saturday night...north winds 10 to 20 kt. waves 4 to 6 ft
occasionally to 8 ft. 
.sunday...north winds 10 to 20 kt diminishing to 10 to 15 kt.
waves 4 to 6 ft occasionally to 8 ft. 
.sunday night...northeast winds 10 to 15 kt. waves 2 to 4 ft. 
.monday...east winds 10 to 15 kt becoming southeast. waves 2 to
4 ft. 
.tuesday...southeast winds 10 to 20 kt becoming east 10 to 15 kt.
chance of rain and snow. waves 4 to 6 ft occasionally to 8 ft
subsiding to 3 to 5 ft.  

$$

fzus63 kmqt 270901
glfls 
expires:202602272100;;328532

open lake forecast for lake superior
national weather service marquette mi
400 am est fri feb 27 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 strong clipper low averaging 29.2 inches moves across northern 
ontario today and tonight, sending a 29.4 inch trough across the 
lake. high pressure builds over the lake this weekend, strengthening 
to 30.6 inches by sunday. ridging continues into early next week 
ahead of a weak 30.1 inch trough tuesday.



lsz162-272100-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
400 am est fri feb 27 2026 /300 am cst fri feb 27 2026/

...gale warning in effect from 1 pm est /noon cst/ this afternoon
through late tonight...
...heavy freezing spray warning in effect from this evening
through saturday morning...

.early this morning...southwest winds 10 to 20 knots. a slight
chance of snow showers. waves calm to 2 feet. 
.today...southwest winds 15 to 25 knots increasing to gales to
35 knots by late morning, then becoming west gales to 45 knots by
mid afternoon. waves building to 8 to 11 feet occasionally to
14 feet. 
.tonight...west gales to 45 knots becoming northwest gales to
35 knots by midnight, then diminishing to 15 to 25 knots late.
heavy freezing spray in the evening. waves building to 9 to
12 feet occasionally to 15 feet, then subsiding to 2 to 4 feet. 
.saturday...northwest winds 10 to 20 knots. waves subsiding to
calm to 2 feet. 
.saturday night...northwest winds 10 to 20 knots diminishing to
5 to 15 knots after midnight. waves calm to 2 feet. 
.sunday...northwest winds 5 to 15 knots backing west in the
afternoon. waves calm to 2 feet. 
.sunday night...southeast winds 5 to 15 knots veering south after
midnight. waves building to 1 to 3 feet. 
.monday...southwest winds 10 to 20 knots increasing to gales to
35 knots. waves building to 4 to 8 feet occasionally to 10 feet. 
.tuesday...southwest winds 20 to 30 knots becoming west 15 to
25 knots. waves subsiding to calm to 2 feet, then building to
1 to 3 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 270901
glfls 
expires:202602272100;;328533

open lake forecast for lake superior
national weather service marquette mi
400 am est fri feb 27 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 strong clipper low averaging 29.2 inches moves across northern 
ontario today and tonight, sending a 29.4 inch trough across the 
lake. high pressure builds over the lake this weekend, strengthening 
to 30.6 inches by sunday. ridging continues into early next week 
ahead of a weak 30.1 inch trough tuesday.



lsz263-272100-
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 fri feb 27 2026

...gale warning in effect from 1 pm est this afternoon through
late tonight...
...heavy freezing spray warning in effect from this evening
through saturday morning...

.early this morning...south winds 5 to 15 knots. a slight chance
of snow showers. waves calm to 2 feet. 
.today...southwest winds 15 to 25 knots increasing to gales to
35 knots by late morning, then becoming west gales to 45 knots by
mid afternoon. a slight chance of snow showers. waves building to
10 to 14 feet occasionally to 18 feet. 
.tonight...west gales to 45 knots becoming northwest gales to
40 knots by midnight, then diminishing to 20 to 30 knots late.
heavy freezing spray. waves building to 12 to 17 feet
occasionally to 21 feet, then subsiding to 4 to 7 feet
occasionally to 9 feet. 
.saturday...northwest winds 15 to 25 knots diminishing to 5 to
15 knots. a slight chance of snow showers in the morning. waves
subsiding to calm to 2 feet. 
.saturday night...northwest winds 5 to 15 knots veering north
after midnight. a slight chance of snow showers in the evening.
waves building to 1 to 3 feet, then subsiding to calm to 2 feet. 
.sunday...northwest winds 5 to 15 knots backing west in the
afternoon. waves calm to 2 feet. 
.sunday night...south winds 5 to 15 knots. waves building to 2 to
4 feet. 
.monday...southwest winds 10 to 20 knots increasing to gales to
35 knots. waves building to 7 to 11 feet occasionally to 14 feet.
.tuesday...southwest winds 20 to 30 knots veering west. waves
subsiding to 2 to 4 feet, then building to 3 to 6 feet
occasionally to 8 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 270901
glfls 
expires:202602272100;;328534

open lake forecast for lake superior
national weather service marquette mi
400 am est fri feb 27 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 strong clipper low averaging 29.2 inches moves across northern 
ontario today and tonight, sending a 29.4 inch trough across the 
lake. high pressure builds over the lake this weekend, strengthening 
to 30.6 inches by sunday. ridging continues into early next week 
ahead of a weak 30.1 inch trough tuesday.



lsz264-272100-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
400 am est fri feb 27 2026

...storm warning in effect from 1 pm est this afternoon through
saturday morning...
...heavy freezing spray warning in effect from this evening
through saturday afternoon...

.early this morning...south winds 5 to 15 knots. a slight chance
of snow showers. waves calm to 2 feet. 
.today...southwest winds 15 to 25 knots increasing to gales to
35 knots by late morning, then becoming west gales to 45 knots by
mid afternoon. a slight chance of snow showers. a slight chance
of rain showers in the afternoon. waves building to 10 to 14 feet
occasionally to 18 feet. 
.tonight...west storm force winds to 55 knots veering northwest
by midnight, then diminishing to gales to 40 knots late. heavy
freezing spray. a slight chance of snow showers after midnight.
waves building to 15 to 20 feet occasionally to 25 feet, then
subsiding to 7 to 10 feet occasionally to 13 feet. 
.saturday...northwest gales to 35 knots diminishing to 10 to
20 knots. heavy freezing spray in the morning. a chance of snow
showers. waves subsiding to 2 to 4 feet. 
.saturday night...northwest winds 10 to 20 knots. a slight chance
of snow showers. waves subsiding to 1 to 3 feet. 
.sunday...northwest winds 5 to 15 knots backing west in the
afternoon. waves subsiding to calm to 2 feet. 
.sunday night...west winds 5 to 15 knots backing southwest after
midnight. waves building to 2 to 4 feet. 
.monday...southwest winds 10 to 20 knots increasing to gales to
35 knots. freezing spray. waves building to 9 to 12 feet
occasionally to 15 feet. 
.tuesday...southwest gales to 35 knots veering west. waves
subsiding to 2 to 4 feet, then building to 4 to 7 feet
occasionally to 9 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 270901
glfls 
expires:202602272100;;328535

open lake forecast for lake superior
national weather service marquette mi
400 am est fri feb 27 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 strong clipper low averaging 29.2 inches moves across northern 
ontario today and tonight, sending a 29.4 inch trough across the 
lake. high pressure builds over the lake this weekend, strengthening 
to 30.6 inches by sunday. ridging continues into early next week 
ahead of a weak 30.1 inch trough tuesday.



lsz265-272100-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
400 am est fri feb 27 2026

...storm warning in effect from 1 pm est this afternoon through
saturday morning...
...heavy freezing spray warning in effect from this evening
through saturday afternoon...

.early this morning...south winds 10 to 20 knots. waves calm to
2 feet. 
.today...southwest winds 15 to 25 knots increasing to gales to
35 knots by late morning, then becoming west gales to 45 knots by
mid afternoon. waves building to 3 to 6 feet occasionally to
8 feet. 
.tonight...west storm force winds to 55 knots becoming northwest
storm force winds to 50 knots by midnight, then diminishing to
gales to 40 knots late. a slight chance of snow showers. waves
building to 6 to 10 feet occasionally to 13 feet. 
.saturday...northwest gales to 35 knots diminishing to 15 to
25 knots. a slight chance of snow showers in the morning. waves
subsiding to 2 to 4 feet. 
.saturday night...northwest winds 15 to 25 knots. a slight chance
of snow showers after midnight. waves subsiding to 1 to 3 feet. 
.sunday...northwest winds 10 to 20 knots backing west in the
afternoon. waves subsiding to calm to 2 feet. 
.sunday night...west winds 10 to 20 knots backing southwest after
midnight. waves calm to 2 feet. 
.monday...south winds 15 to 25 knots becoming southwest 20 to
30 knots. waves building to 2 to 4 feet. 
.tuesday...southwest winds 20 to 30 knots becoming west gales to
35 knots. waves subsiding to calm to 2 feet, then building to
1 to 3 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 270901
glfls 
expires:202602272100;;328536

open lake forecast for lake superior
national weather service marquette mi
400 am est fri feb 27 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 strong clipper low averaging 29.2 inches moves across northern 
ontario today and tonight, sending a 29.4 inch trough across the 
lake. high pressure builds over the lake this weekend, strengthening 
to 30.6 inches by sunday. ridging continues into early next week 
ahead of a weak 30.1 inch trough tuesday.



lsz266-272100-
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 fri feb 27 2026

...storm warning in effect from 1 pm est this afternoon through
saturday morning...
...heavy freezing spray warning in effect from this evening
through late saturday night...

.early this morning...south winds 10 to 20 knots. waves calm to
2 feet. 
.today...south winds 20 to 30 knots increasing to gales to
35 knots by late morning, then becoming southwest storm force
winds to 55 knots by mid afternoon. a slight chance of snow
showers. a slight chance of rain showers in the afternoon. waves
building to 9 to 12 feet occasionally to 15 feet. 
.tonight...west storm force winds to 55 knots veering northwest
by midnight, then diminishing to gales to 45 knots late. heavy
freezing spray. a chance of snow showers. waves building to 17 to
22 feet occasionally to 28 feet, then subsiding to 15 to 20 feet
occasionally to 25 feet. 
.saturday...northwest gales to 35 knots diminishing to 20 to
30 knots. heavy freezing spray. a chance of snow showers. waves
subsiding to 4 to 7 feet occasionally to 9 feet. 
.saturday night...northwest winds 20 to 30 knots diminishing to
15 to 25 knots after midnight. heavy freezing spray in the
evening. a chance of snow showers. waves subsiding to 3 to 5 feet
occasionally to 7 feet. 
.sunday...northwest winds 10 to 20 knots backing west in the
afternoon. waves subsiding to 1 to 3 feet. 
.sunday night...west winds 10 to 20 knots backing southwest after
midnight. waves building to 3 to 6 feet occasionally to 8 feet. 
.monday...south winds 15 to 25 knots becoming southwest gales to
35 knots. freezing spray. waves building to 9 to 12 feet
occasionally to 15 feet. 
.tuesday...southwest gales to 35 knots veering west. waves
subsiding to 3 to 5 feet occasionally to 7 feet, then building to
5 to 8 feet occasionally to 10 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 270901
glfls 
expires:202602272100;;328537

open lake forecast for lake superior
national weather service marquette mi
400 am est fri feb 27 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 strong clipper low averaging 29.2 inches moves across northern 
ontario today and tonight, sending a 29.4 inch trough across the 
lake. high pressure builds over the lake this weekend, strengthening 
to 30.6 inches by sunday. ridging continues into early next week 
ahead of a weak 30.1 inch trough tuesday.



lsz267-272100-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
400 am est fri feb 27 2026

...storm warning in effect from 1 pm est this afternoon through
saturday morning...
...heavy freezing spray warning in effect from this evening
through late saturday night...

.early this morning...southwest winds 5 to 15 knots. waves calm
to 2 feet. 
.today...south winds 15 to 25 knots increasing to 20 to 30 knots
by late morning, then becoming southwest gales to 45 knots by mid
afternoon. a slight chance of rain and snow showers in the
afternoon. waves building to 7 to 10 feet occasionally to
13 feet. 
.tonight...west gales to 45 knots becoming northwest storm force
winds to 50 knots by midnight, then diminishing to gales to
45 knots late. heavy freezing spray. a chance of snow showers,
possibly mixed with rain in the evening. snow showers likely
after midnight. waves building to 17 to 22 feet occasionally to
28 feet, then subsiding to 15 to 20 feet occasionally to 25 feet.
.saturday...northwest gales to 35 knots diminishing to 20 to
30 knots. heavy freezing spray. a chance of snow showers. waves
subsiding to 3 to 6 feet occasionally to 8 feet. 
.saturday night...northwest winds 15 to 25 knots becoming north
10 to 20 knots after midnight. heavy freezing spray in the
evening. a chance of snow showers. waves subsiding to 2 to
4 feet. 
.sunday...north winds 5 to 15 knots backing west in the
afternoon. waves subsiding to 1 to 3 feet. 
.sunday night...south winds 5 to 15 knots increasing to 10 to
20 knots after midnight. waves building to 3 to 6 feet
occasionally to 8 feet. 
.monday...south winds 10 to 20 knots increasing to 20 to
30 knots. freezing spray. waves building to 7 to 11 feet
occasionally to 14 feet. 
.tuesday...southwest winds 20 to 30 knots becoming west gales to
35 knots. waves subsiding to 3 to 5 feet occasionally to 7 feet,
then building to 5 to 8 feet occasionally to 10 feet. 

note, wave height forecasts are for ice free areas.

$$