fzus63 kdtx 200842
glflh 
expires:202602201645;;948290

open lake forecast for lake huron
national weather service detroit/pontiac mi
342 am est fri feb 20 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, 29.20 inches, lifts into the central great
lakes friday bringing a chance for northeast winds to gust to 
gale force. a gale watch remains in effect north of sturgeon 
point.


lhz361-362-201645-
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-
342 am est fri feb 20 2026

...gale watch in effect from 10 am est this morning through this
evening...

.today...east winds to 30 knots decreasing to 20 to 25 knots in
the afternoon. gusts to 35 knot gales. rain and freezing rain in
the morning...then rain and snow in the afternoon. waves 10 to
14 feet. waves occasionally around 18 feet. 
.tonight...northeast winds 15 to 20 knots. gusts to 30 knots
early in the evening. waves 6 to 9 feet. waves occasionally
around 12 feet. 
.saturday...northeast winds 15 to 20 knots decreasing to 10 to
15 knots in the late morning and afternoon. a chance of snow.
waves 3 to 5 feet. 
.saturday night...northeast winds 10 to 15 knots. a chance of
snow in the evening. waves 2 to 4 feet. 
.sunday...north winds 10 to 15 knots increasing to 15 to 20 knots
late in the evening. waves 3 to 5 feet building to 5 to 7 feet
late in the evening. waves occasionally around 10 feet. 
.monday...north winds 20 to 25 knots decreasing to 10 to
15 knots. waves 6 to 9 feet. waves occasionally around 12 feet. 
.tuesday...north winds 5 to 10 knots becoming east 10 to 15 knots
in the late morning and early afternoon...then becoming south
15 to 20 knots early in the evening increasing to 20 to 25 knots
with gusts to around 30 knots by midnight. a chance of snow .
waves 2 to 4 feet building to 8 to 12 feet . waves occasionally
around 15 feet. 


$$

fzus63 kdtx 200842
glflh 
expires:202602201645;;948291

open lake forecast for lake huron
national weather service detroit/pontiac mi
342 am est fri feb 20 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, 29.20 inches, lifts into the central great
lakes friday bringing a chance for northeast winds to gust to 
gale force. a gale watch remains in effect north of sturgeon 
point.


lhz363-462>464-201645-
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-
342 am est fri feb 20 2026

.today...east winds 20 to 25 knots becoming southeast 10 to
15 knots. rain in the morning. waves 6 to 9 feet. waves
occasionally around 12 feet. 
.tonight...south winds 10 to 15 knots backing to the east late in
the evening...then backing to the north after midnight. waves
3 to 5 feet. 
.saturday...north winds 10 to 15 knots. waves 3 to 5 feet. 
.saturday night...north winds 5 to 10 knots. a chance of snow.
waves 2 to 4 feet. 
.sunday...north winds 10 to 15 knots increasing to 15 to 20 knots
late in the afternoon. a chance of snow. waves 3 to 5 feet
building to 5 to 7 feet late in the evening. waves occasionally
around 10 feet. 
.monday...north winds 20 to 25 knots decreasing to 15 to 20 knots
. waves 6 to 9 feet. waves occasionally around 12 feet. 
.tuesday...north winds 10 to 15 knots veering to the east in the
late morning and early afternoon...then veering to the south
early in the evening increasing to 20 to 25 knots with gusts to
around 30 knots by midnight. a chance of snow by midnight. waves
3 to 5 feet building to 5 to 7 feet by midnight. waves
occasionally around 10 feet. 


$$

fzus63 kmkx 200857
glflm 
expires:202602201615;;948619

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
257 am cst fri feb 20 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 of 29.2 inches will track northeastward across
northern illinois / southeastern wisconsin early this morning, 
cross central lake michigan later this morning, then exit 
eastward (over lake huron) and diminish rapidly this evening. for
northern portions of lake michigan, we expect gusty east to 
northeast winds through the course of this event, with a few gusts
to gale force possible this morning. for the southern half of the
lake as the low crosses central portions of the lake this 
morning, winds veer west and accelerate to gale force. a gale 
warning remains in effect over the southern half of the lake 
this morning through this evening for west gales to around 40 
knots.

northwest winds gradually subside as the low pressure departs and
weakens tonight. northwest to north winds continue through the 
weekend and into early next week as arctic high pressure builds 
southward towards the dakotas / minnesota. these winds will become
gusty sunday into monday as the arctic high draws closer, and 
could reach gale force sunday night into monday morning. 

the arctic high pressure erodes rapidly monday evening, allowing
winds to subside. the remnants of this high pressure push east of
the lake as a weak surface pressure ridge, working with a
developing low pressure over the northern plains to drive breezy
south winds into tuesday.


lmz261-362-364-366-563-565-201615-
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-
257 am cst fri feb 20 2026

two rivers wi to manistee mi north...

.today...east gales to 35 kt backing to north to 30 kt. rain with
a chance of freezing rain this morning, then rain and snow likely
this afternoon. waves 4 to 7 ft occasionally to 9 ft. 
.tonight...north winds to 30 kt diminishing to 10 to 20 kt.
chance of snow and rain in the evening, then chance of snow
overnight. waves 4 to 7 ft occasionally to 9 ft subsiding to 4 to
6 ft occasionally to 8 ft. 
.saturday...north winds 10 to 20 kt diminishing to 10 to 15 kt.
chance of snow. waves 3 to 5 ft subsiding to 2 to 4 ft. 
.saturday night...north winds 10 to 20 kt increasing to 15 to
25 kt. chance of snow. waves 2 to 4 ft building to 4 to 6 ft
occasionally to 8 ft. 
.sunday...north winds 15 to 25 kt increasing to 30 kt. chance of
snow in the morning. waves 6 to 9 ft occasionally to 12 ft. 
.sunday night...north winds to 30 kt. waves 8 to 11 ft
occasionally to 14 ft. 
.monday...north winds to 30 kt diminishing to 15 to 25 kt. waves
8 to 12 ft occasionally to 16 ft subsiding to 6 to 9 ft
occasionally to 12 ft. 
.tuesday...south winds to 30 kt. chance of snow. waves 5 to 8 ft
occasionally to 10 ft building to 10 to 14 ft occasionally to
18 ft.  

$$

fzus63 kmkx 200857
glflm 
expires:202602201615;;948620

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
257 am cst fri feb 20 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 of 29.2 inches will track northeastward across
northern illinois / southeastern wisconsin early this morning, 
cross central lake michigan later this morning, then exit 
eastward (over lake huron) and diminish rapidly this evening. for
northern portions of lake michigan, we expect gusty east to 
northeast winds through the course of this event, with a few gusts
to gale force possible this morning. for the southern half of the
lake as the low crosses central portions of the lake this 
morning, winds veer west and accelerate to gale force. a gale 
warning remains in effect over the southern half of the lake 
this morning through this evening for west gales to around 40 
knots.

northwest winds gradually subside as the low pressure departs and
weakens tonight. northwest to north winds continue through the 
weekend and into early next week as arctic high pressure builds 
southward towards the dakotas / minnesota. these winds will become
gusty sunday into monday as the arctic high draws closer, and 
could reach gale force sunday night into monday morning. 

the arctic high pressure erodes rapidly monday evening, allowing
winds to subside. the remnants of this high pressure push east of
the lake as a weak surface pressure ridge, working with a
developing low pressure over the northern plains to drive breezy
south winds into tuesday.


lmz567-669-868-870-201615-
lake michigan from two rivers to sheboygan wi 5 nm offshore to
mid lake-
lake michigan from sheboygan to port washington wi 5 nm offshore
to mid lake-
lake michigan from pentwater to manistee mi 5 nm offshore to mid
lake-
lake michigan from whitehall to pentwater mi 5 nm offshore to mid
lake-
257 am cst fri feb 20 2026

two rivers wi to manistee mi south to port washington wi to
whitehall mi...

...gale warning in effect from 11 am cst this morning through
this evening...

.today...southeast winds to 30 kt becoming southwest gales to
35 kt late this morning, then becoming west gales to 40 kt this
afternoon. chance of rain this morning, then chance of rain and
snow this afternoon. waves 4 to 7 ft occasionally to 9 ft
building to 8 to 12 ft occasionally to 16 ft. 
.tonight...northwest gales to 35 kt diminishing to 15 to 25 kt.
slight chance of rain and snow in the evening. waves 8 to 12 ft
occasionally to 16 ft subsiding to 6 to 9 ft occasionally to
12 ft. 
.saturday...northwest winds 10 to 20 kt. waves 4 to 7 ft
occasionally to 9 ft subsiding to 3 to 5 ft. 
.saturday night...northwest winds 10 to 20 kt increasing to 15 to
25 kt. chance of snow. waves 3 to 5 ft building to 5 to 8 ft
occasionally to 10 ft. 
.sunday...northwest winds to 30 kt. chance of snow. waves 7 to
10 ft occasionally to 13 ft building to 8 to 11 ft occasionally
to 14 ft. 
.sunday night...north winds to 30 kt increasing to gales to
35 kt. waves 10 to 14 ft occasionally to 18 ft. 
.monday...north gales to 35 kt diminishing to 30 kt. waves 10 to
14 ft occasionally to 18 ft. 
.tuesday...south winds to 30 kt. waves 6 to 9 ft occasionally to
12 ft building to 10 to 14 ft occasionally to 18 ft.  

$$

fzus63 kmkx 200857
glflm 
expires:202602201615;;948621

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
257 am cst fri feb 20 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 of 29.2 inches will track northeastward across
northern illinois / southeastern wisconsin early this morning, 
cross central lake michigan later this morning, then exit 
eastward (over lake huron) and diminish rapidly this evening. for
northern portions of lake michigan, we expect gusty east to 
northeast winds through the course of this event, with a few gusts
to gale force possible this morning. for the southern half of the
lake as the low crosses central portions of the lake this 
morning, winds veer west and accelerate to gale force. a gale 
warning remains in effect over the southern half of the lake 
this morning through this evening for west gales to around 40 
knots.

northwest winds gradually subside as the low pressure departs and
weakens tonight. northwest to north winds continue through the 
weekend and into early next week as arctic high pressure builds 
southward towards the dakotas / minnesota. these winds will become
gusty sunday into monday as the arctic high draws closer, and 
could reach gale force sunday night into monday morning. 

the arctic high pressure erodes rapidly monday evening, allowing
winds to subside. the remnants of this high pressure push east of
the lake as a weak surface pressure ridge, working with a
developing low pressure over the northern plains to drive breezy
south winds into tuesday.


lmz080-671-673-675-777-779-872-874-876-878-201615-
lake michigan from michigan city in to st. joseph mi 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 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-
257 am cst fri feb 20 2026

port washington wi to whitehall mi south...

...gale warning in effect from 6 am cst this morning through this
evening...

.today...southwest gales to 40 kt becoming west. chance of rain
and snow. waves 6 to 9 ft occasionally to 12 ft building to 12 to
16 ft occasionally to 21 ft. 
.tonight...west gales to 40 kt becoming northwest 15 to 25 kt.
waves 10 to 14 ft occasionally to 18 ft subsiding to 6 to 9 ft
occasionally to 12 ft. 
.saturday...northwest winds 10 to 20 kt. 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 increasing to 15 to
25 kt. chance of snow overnight. waves 4 to 6 ft occasionally to
8 ft building to 5 to 8 ft occasionally to 10 ft. 
.sunday...northwest winds to 30 kt. snow likely in the morning,
then chance of snow in the afternoon. waves 8 to 11 ft
occasionally to 14 ft building to 8 to 12 ft occasionally to
16 ft. 
.sunday night...northwest winds to 30 kt becoming north gales to
35 kt. chance of snow. waves 10 to 14 ft occasionally to 18 ft. 
.monday...north gales to 35 kt diminishing to 30 kt. chance of
snow. waves 10 to 14 ft occasionally to 18 ft. 
.tuesday...southwest winds to 30 kt becoming south. waves 6 to
9 ft occasionally to 12 ft building to 8 to 11 ft occasionally to
14 ft.  

$$

fzus63 kmqt 200901
glfls 
expires:202602202100;;948801

open lake forecast for lake superior
national weather service marquette mi
400 am est fri feb 20 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 29.2 inch low moving into lake michigan this morning traverses 
northern lower michigan and lake huron this afternoon and evening, 
progressively weakening to 29.5 inches as it does so. the low 
continues to weaken saturday, devolving into bent back troughing of 
30.2 inches over the upper great lakes by sunday morning. troughing 
continues to weaken sunday as a 31.0 inch high moves across 
manitoba. this high weakens to 30.5 inches as it moves through 
northern ontario monday. behind the ridge monday night and tuesday, 
a deepening clipper low of at least 29.6 inches moves into the 
northern plains, reaching the u.p. tuesday evening.



lsz162-202100-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
400 am est fri feb 20 2026 /300 am cst fri feb 20 2026/

.early this morning...north winds 10 to 20 knots. a slight chance
of snow. waves 1 to 3 feet. 
.today...north winds 15 to 25 knots. a chance of snow. waves
building to 3 to 5 feet occasionally to 7 feet, then subsiding to
2 to 4 feet. 
.tonight...northwest winds 10 to 20 knots. a slight chance of
snow showers. waves subsiding to calm to 2 feet. 
.saturday...northwest winds 10 to 20 knots. a chance of snow
showers. waves calm to 2 feet. 
.saturday night...northwest winds 10 to 20 knots increasing to
15 to 25 knots after midnight. a slight chance of snow showers.
waves calm to 2 feet. 
.sunday...north winds 15 to 25 knots. waves calm to 2 feet. 
.sunday night...north winds 15 to 25 knots diminishing to 10 to
20 knots after midnight. waves building to 1 to 3 feet. 
.monday...north winds 10 to 20 knots veering southeast. waves
subsiding to calm to 2 feet, then building to 3 to 5 feet
occasionally to 7 feet. 
.tuesday...south winds 15 to 25 knots veering west. a chance of
snow showers. waves building to 3 to 6 feet occasionally to
8 feet, then subsiding to 1 to 3 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 200901
glfls 
expires:202602202100;;948802

open lake forecast for lake superior
national weather service marquette mi
400 am est fri feb 20 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 29.2 inch low moving into lake michigan this morning traverses 
northern lower michigan and lake huron this afternoon and evening, 
progressively weakening to 29.5 inches as it does so. the low 
continues to weaken saturday, devolving into bent back troughing of 
30.2 inches over the upper great lakes by sunday morning. troughing 
continues to weaken sunday as a 31.0 inch high moves across 
manitoba. this high weakens to 30.5 inches as it moves through 
northern ontario monday. behind the ridge monday night and tuesday, 
a deepening clipper low of at least 29.6 inches moves into the 
northern plains, reaching the u.p. tuesday evening.



lsz263-202100-
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 20 2026

.early this morning...north winds 10 to 20 knots. a chance of
snow. waves 2 to 4 feet building to 3 to 5 feet occasionally to
7 feet. 
.today...north winds 15 to 25 knots increasing to 20 to 30 knots
by late morning, then diminishing to 15 to 25 knots by mid
afternoon. snow. freezing spray in the afternoon. waves building
to 4 to 8 feet occasionally to 10 feet. 
.tonight...north winds 10 to 20 knots. freezing spray in the
evening. a chance of snow showers. waves subsiding to 3 to 5 feet
occasionally to 7 feet. 
.saturday...north winds 10 to 20 knots diminishing to 5 to
15 knots by mid afternoon. a chance of snow showers. waves
subsiding to 1 to 3 feet. 
.saturday night...north winds 10 to 20 knots. a slight chance of
snow showers. waves building to 3 to 5 feet occasionally to
7 feet. 
.sunday...north winds 15 to 25 knots. waves building to 3 to
6 feet occasionally to 8 feet. 
.sunday night...north winds 20 to 30 knots. heavy freezing spray.
waves building to 4 to 8 feet occasionally to 10 feet. 
.monday...north winds 15 to 25 knots veering south. waves
subsiding to calm to 2 feet, then building to 3 to 5 feet
occasionally to 7 feet. 
.tuesday...south winds 15 to 25 knots veering west. a chance of
snow showers. waves building to 4 to 7 feet occasionally to
9 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 200901
glfls 
expires:202602202100;;948803

open lake forecast for lake superior
national weather service marquette mi
400 am est fri feb 20 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 29.2 inch low moving into lake michigan this morning traverses 
northern lower michigan and lake huron this afternoon and evening, 
progressively weakening to 29.5 inches as it does so. the low 
continues to weaken saturday, devolving into bent back troughing of 
30.2 inches over the upper great lakes by sunday morning. troughing 
continues to weaken sunday as a 31.0 inch high moves across 
manitoba. this high weakens to 30.5 inches as it moves through 
northern ontario monday. behind the ridge monday night and tuesday, 
a deepening clipper low of at least 29.6 inches moves into the 
northern plains, reaching the u.p. tuesday evening.



lsz264-202100-
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 20 2026

.early this morning...northeast winds 15 to 25 knots. snow
likely. waves 3 to 6 feet occasionally to 8 feet. 
.today...northeast winds 15 to 25 knots increasing to 20 to
30 knots by late morning, then becoming north 15 to 25 knots by
mid afternoon. snow. freezing spray in the afternoon. waves
building to 5 to 8 feet occasionally to 10 feet. 
.tonight...north winds 15 to 25 knots diminishing to 10 to
20 knots by midnight. freezing spray. snow showers in the
evening. snow showers likely after midnight. waves subsiding to
3 to 5 feet occasionally to 7 feet. 
.saturday...north winds 10 to 20 knots. a chance of snow showers.
waves subsiding to 2 to 4 feet. 
.saturday night...north winds 10 to 20 knots. a slight chance of
snow showers. waves building to 3 to 5 feet occasionally to
7 feet. 
.sunday...north winds 15 to 25 knots increasing to 20 to 30 knots
in the afternoon. heavy freezing spray. waves building to 5 to
8 feet occasionally to 10 feet. 
.sunday night...north winds 20 to 30 knots. heavy freezing spray.
waves building to 6 to 9 feet occasionally to 11 feet. 
.monday...north winds 20 to 30 knots becoming south 15 to
25 knots. heavy freezing spray. waves subsiding to calm to
2 feet, then building to 3 to 6 feet occasionally to 8 feet. 
.tuesday...south winds 20 to 30 knots veering northwest. freezing
spray. a chance of snow showers. waves building to 6 to 10 feet
occasionally to 13 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 200901
glfls 
expires:202602202100;;948804

open lake forecast for lake superior
national weather service marquette mi
400 am est fri feb 20 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 29.2 inch low moving into lake michigan this morning traverses 
northern lower michigan and lake huron this afternoon and evening, 
progressively weakening to 29.5 inches as it does so. the low 
continues to weaken saturday, devolving into bent back troughing of 
30.2 inches over the upper great lakes by sunday morning. troughing 
continues to weaken sunday as a 31.0 inch high moves across 
manitoba. this high weakens to 30.5 inches as it moves through 
northern ontario monday. behind the ridge monday night and tuesday, 
a deepening clipper low of at least 29.6 inches moves into the 
northern plains, reaching the u.p. tuesday evening.



lsz265-202100-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
400 am est fri feb 20 2026

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

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 200901
glfls 
expires:202602202100;;948805

open lake forecast for lake superior
national weather service marquette mi
400 am est fri feb 20 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 29.2 inch low moving into lake michigan this morning traverses 
northern lower michigan and lake huron this afternoon and evening, 
progressively weakening to 29.5 inches as it does so. the low 
continues to weaken saturday, devolving into bent back troughing of 
30.2 inches over the upper great lakes by sunday morning. troughing 
continues to weaken sunday as a 31.0 inch high moves across 
manitoba. this high weakens to 30.5 inches as it moves through 
northern ontario monday. behind the ridge monday night and tuesday, 
a deepening clipper low of at least 29.6 inches moves into the 
northern plains, reaching the u.p. tuesday evening.



lsz266-202100-
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 20 2026

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

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 200901
glfls 
expires:202602202100;;948806

open lake forecast for lake superior
national weather service marquette mi
400 am est fri feb 20 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 29.2 inch low moving into lake michigan this morning traverses 
northern lower michigan and lake huron this afternoon and evening, 
progressively weakening to 29.5 inches as it does so. the low 
continues to weaken saturday, devolving into bent back troughing of 
30.2 inches over the upper great lakes by sunday morning. troughing 
continues to weaken sunday as a 31.0 inch high moves across 
manitoba. this high weakens to 30.5 inches as it moves through 
northern ontario monday. behind the ridge monday night and tuesday, 
a deepening clipper low of at least 29.6 inches moves into the 
northern plains, reaching the u.p. tuesday evening.



lsz267-202100-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
400 am est fri feb 20 2026

.early this morning...east winds 20 to 30 knots. a chance of
rain, possibly mixed with freezing rain. waves 2 to 4 feet
building to 3 to 5 feet occasionally to 7 feet. 
.today...east winds 20 to 30 knots diminishing to 15 to 25 knots
by late morning, then backing northeast by mid afternoon. snow in
the morning. rain. a chance of snow in the afternoon. waves
subsiding to 2 to 4 feet. 
.tonight...northeast winds 15 to 25 knots diminishing to 10 to
20 knots late. a slight chance of rain showers in the evening. a
slight chance of snow showers. waves 2 to 4 feet. 
.saturday...east winds 10 to 20 knots diminishing to 5 to
15 knots by late morning, then becoming northeast 10 to 20 knots
by mid afternoon. a chance of snow showers. waves subsiding to
calm to 2 feet. 
.saturday night...northeast winds 10 to 20 knots. a slight chance
of snow showers. waves calm to 2 feet. 
.sunday...north winds 10 to 20 knots increasing to 15 to 25 knots
in the afternoon. waves building to 3 to 6 feet occasionally to
8 feet. 
.sunday night...north winds 20 to 30 knots. heavy freezing spray.
waves building to 5 to 8 feet occasionally to 10 feet. 
.monday...north winds 20 to 30 knots becoming east 10 to
20 knots. heavy freezing spray. waves subsiding to 1 to 3 feet,
then building to 2 to 4 feet. 
.tuesday...southeast winds 20 to 30 knots becoming south gales to
35 knots. freezing spray. a chance of snow showers. snow showers
likely. waves building to 8 to 11 feet occasionally to 14 feet. 

note, wave height forecasts are for ice free areas.

$$