fzus63 kdtx 202045
glflh 
expires:202602210445;;976713

open lake forecast for lake huron
national weather service detroit/pontiac mi
345 pm 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, 29.30 inches, tracks into lake huron
this evening. southwest gusts across the south will subside below
gale force late this evening as the low stalls over lake huron.
winds shift to the west northwest saturday afternoon as the low
weakens and eases into ontario.


lhz361-362-210445-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
lake huron from presque isle light to sturgeon point mi beyond
5nm off shore-
345 pm est fri feb 20 2026

.tonight...northeast winds 15 to 20 knots. gusts to 30 knots
early in the evening. waves 5 to 7 feet. waves occasionally
around 10 feet. 
.saturday...northeast winds 15 to 20 knots decreasing to 5 to
10 knots. a chance of snow. waves 3 to 5 feet. 
.saturday night...northeast winds 5 to 10 knots increasing to
10 to 15 knots in the late evening and overnight. a chance of
snow in the evening. waves 1 to 3 feet. 
.sunday...northeast winds 10 to 15 knots. waves 2 to 4 feet. 
.sunday night...north winds 15 to 20 knots increasing to 20 to
25 knots after midnight. freezing spray after midnight. waves
4 to 6 feet building to 6 to 9 feet after midnight. waves
occasionally around 12 feet. 
.monday...north winds 20 to 25 knots with gusts to around
30 knots decreasing to 10 to 15 knots late in the evening. heavy
freezing spray. 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 southeast
15 to 20 knots early in the evening increasing to 20 to 25 knots
by midnight. a chance of snow. freezing spray . waves 3 to 5 feet
subsiding to 1 to 3 feet in the late morning and early
afternoon...then building to 5 to 7 feet early in the evening
building to 8 to 12 feet by midnight. waves occasionally around
15 feet. 
.wednesday...southeast winds 20 to 25 knots becoming east 15 to
20 knots in the late morning and early afternoon...then veering
to the southwest early in the evening becoming west 20 to
25 knots by midnight. freezing spray early in the morning. a
chance of snow early in the morning. a chance of snow by
midnight. waves 6 to 9 feet. waves occasionally around 12 feet. 


$$

fzus63 kdtx 202045
glflh 
expires:202602210445;;976714

open lake forecast for lake huron
national weather service detroit/pontiac mi
345 pm 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, 29.30 inches, tracks into lake huron
this evening. southwest gusts across the south will subside below
gale force late this evening as the low stalls over lake huron.
winds shift to the west northwest saturday afternoon as the low
weakens and eases into ontario.


lhz363-462-210445-
lake huron from sturgeon point to alabaster mi beyond 5nm off
shore-
lake huron from port austin to harbor beach beyond 5nm off shore-
345 pm est fri feb 20 2026

.tonight...west winds 10 to 15 knots. a chance of rain and snow
in the evening. waves 3 to 5 feet. 
.saturday...north winds 10 to 15 knots. a chance of snow in the
morning. waves 3 to 5 feet. 
.saturday night...north winds 5 to 10 knots. a chance of snow.
waves 2 to 4 feet subsiding to 1 to 3 feet in the late evening
and overnight. 
.sunday...north winds 10 to 15 knots. a chance of snow. waves
3 to 5 feet. 
.sunday night...north winds 15 to 20 knots increasing to 20 to
25 knots with gusts to around 30 knots after midnight. a chance
of snow in the evening. freezing spray after midnight. waves 5 to
7 feet building to 6 to 9 feet after midnight. waves occasionally
around 12 feet. 
.monday...north winds 20 to 25 knots with gusts to around
30 knots becoming northwest 15 to 20 knots late in the evening.
heavy freezing spray. waves 8 to 12 feet. waves occasionally
around 15 feet. 
.tuesday...northwest winds 5 to 10 knots veering to the east in
the late morning and early afternoon...then becoming south 10 to
15 knots early in the evening increasing to 20 to 25 knots by
midnight. a chance of snow. waves 3 to 5 feet building to 4 to
6 feet by midnight. waves occasionally around 8 feet. 
.wednesday...south winds 20 to 25 knots becoming southwest 15 to
20 knots in the late morning and early afternoon...then
decreasing to 10 to 15 knots early in the evening becoming west
20 to 25 knots by midnight. a chance of snow. a chance of rain by
midnight. waves 4 to 6 feet building to 6 to 9 feet by midnight.
waves occasionally around 12 feet. 

wave heights are for ice free areas.

$$

fzus63 kmkx 202049
glflm 
expires:202602210415;;976838

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
249 pm 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 around 29.2 inches over east central michigan will very 
slowly track east to lake huron by this evening. west to northwest 
gales will persist across the southern two-thirds of the lake 
through this evening. thus the gale warning will remain in effect. 

the northwest winds will subside tonight as the low pressure weakens 
over lake huron. northwest to north winds will continue across the 
lake into early next week as a polar high pressure around 30.4 
inches builds south into the upper great lakes. as the high 
builds in the pressure gradient will tighten sunday night into 
monday. winds will approach gales force during this time. light 
and variable winds are then expected monday night into tuesday as 
the high moves overhead.


lmz261-362-364-366-563-565-210415-
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-
249 pm cst fri feb 20 2026

two rivers wi to manistee mi north...

.tonight...north winds to 30 kt diminishing to 15 to 25 kt. snow
likely with slight chance of rain this evening, then snow likely
with slight chance of light freezing rain overnight. waves 6 to
9 ft occasionally to 12 ft subsiding to 4 to 6 ft occasionally to
8 ft. 
.saturday...north winds 10 to 20 kt diminishing to 10 to 15 kt.
snow likely in the morning, then chance of snow showers in the
afternoon. 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 showers. waves 2 to 4 ft building to 4 to
7 ft occasionally to 9 ft. 
.sunday...north winds to 30 kt. chance of snow showers in the
morning. waves 7 to 10 ft occasionally to 13 ft. 
.sunday night...north gales to 35 kt. waves 8 to 12 ft
occasionally to 16 ft. 
.monday...north gales to 35 kt diminishing to 30 kt. waves 8 to
12 ft occasionally to 16 ft subsiding to 7 to 10 ft occasionally
to 13 ft. 
.monday night...north winds 10 to 20 kt becoming northeast 10 to
15 kt. waves 4 to 7 ft occasionally to 9 ft subsiding to 2 to
4 ft. 
.tuesday...south winds 10 to 20 kt increasing to 15 to 25 kt.
chance of snow. waves 4 to 7 ft occasionally to 9 ft building to
7 to 10 ft occasionally to 13 ft. 
.wednesday...west winds 10 to 20 kt. waves 5 to 8 ft occasionally
to 10 ft subsiding to 4 to 7 ft occasionally to 9 ft.  

$$

fzus63 kmkx 202049
glflm 
expires:202602210415;;976839

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
249 pm 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 around 29.2 inches over east central michigan will very 
slowly track east to lake huron by this evening. west to northwest 
gales will persist across the southern two-thirds of the lake 
through this evening. thus the gale warning will remain in effect. 

the northwest winds will subside tonight as the low pressure weakens 
over lake huron. northwest to north winds will continue across the 
lake into early next week as a polar high pressure around 30.4 
inches builds south into the upper great lakes. as the high 
builds in the pressure gradient will tighten sunday night into 
monday. winds will approach gales force during this time. light 
and variable winds are then expected monday night into tuesday as 
the high moves overhead.


lmz567-669-868-870-210415-
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-
249 pm cst fri feb 20 2026

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

...gale warning in effect until 9 pm cst this evening...

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

$$

fzus63 kmkx 202049
glflm 
expires:202602210415;;976840

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
249 pm 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 around 29.2 inches over east central michigan will very 
slowly track east to lake huron by this evening. west to northwest 
gales will persist across the southern two-thirds of the lake 
through this evening. thus the gale warning will remain in effect. 

the northwest winds will subside tonight as the low pressure weakens 
over lake huron. northwest to north winds will continue across the 
lake into early next week as a polar high pressure around 30.4 
inches builds south into the upper great lakes. as the high 
builds in the pressure gradient will tighten sunday night into 
monday. winds will approach gales force during this time. light 
and variable winds are then expected monday night into tuesday as 
the high moves overhead.


lmz080-671-673-675-777-779-872-874-876-878-210415-
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-
249 pm cst fri feb 20 2026

port washington wi to whitehall mi south...

...gale warning in effect until 10 pm cst this evening...

.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. chance of light freezing
rain in the afternoon. waves 5 to 8 ft occasionally to 10 ft
subsiding to 3 to 5 ft. 
.saturday night...northwest winds 10 to 20 kt increasing to 15 to
25 kt. chance of snow showers. waves 3 to 5 ft building to 5 to
8 ft occasionally to 10 ft. 
.sunday...northwest winds to 30 kt. chance of snow showers. waves
8 to 11 ft occasionally to 14 ft building to 8 to 12 ft
occasionally to 16 ft. 
.sunday night...north winds to 30 kt increasing to 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 in the morning. waves 10 to 14 ft occasionally to 18 ft. 
.monday night...north winds 10 to 20 kt backing to west 10 to
15 kt. waves 7 to 10 ft occasionally to 13 ft subsiding to 4 to
6 ft occasionally to 8 ft. 
.tuesday...southwest winds 15 to 25 kt becoming south. waves 4 to
7 ft occasionally to 9 ft building to 7 to 10 ft occasionally to
13 ft. 
.wednesday...southwest winds 10 to 20 kt. chance of rain. waves
7 to 10 ft occasionally to 13 ft.  

$$

fzus63 kmqt 202101
glfls 
expires:202602210900;;977197

open lake forecast for lake superior
national weather service marquette mi
400 pm 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 29.4 inch low over upper lower michigan will move to lake huron 
this 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. troughing 
around 29.7 inches remains over lake superior through wednesday as a 
29.5 inch low tracks to the south.



lsz162-210900-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
400 pm est fri feb 20 2026 /300 pm cst fri feb 20 2026/

.late this afternoon...northwest winds 15 to 25 knots. a slight
chance of snow. waves 3 to 5 feet occasionally to 7 feet. 
.tonight...northwest winds 10 to 20 knots. a slight chance of
snow. waves subsiding to 1 to 3 feet. 
.saturday...northwest winds 10 to 20 knots. a slight chance of
snow. waves subsiding to calm to 2 feet. 
.saturday night...northwest winds 10 to 20 knots becoming north
15 to 25 knots by midnight, then becoming northwest 20 to
30 knots late. a slight chance of snow. waves building to 1 to
3 feet. 
.sunday...north winds 15 to 25 knots. a slight chance of snow
showers in the morning. waves building to 2 to 4 feet, then
subsiding to 1 to 3 feet. 
.sunday night...north winds 15 to 25 knots. waves building to
3 to 5 feet occasionally to 7 feet, then subsiding to 2 to
4 feet. 
.monday...north winds 10 to 20 knots becoming east 5 to 15 knots
in the afternoon. waves subsiding to calm to 2 feet. 
.monday night...southeast winds 5 to 15 knots increasing to 10 to
20 knots after midnight. a chance of snow showers. waves building
to 2 to 4 feet. 
.tuesday...south winds 15 to 25 knots becoming west 10 to
20 knots. snow showers likely, then a chance of snow showers.
waves building to 3 to 5 feet occasionally to 7 feet, then
subsiding to calm to 2 feet. 
.wednesday...northwest winds 10 to 20 knots. waves building to
1 to 3 feet, then subsiding to calm to 2 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 202101
glfls 
expires:202602210900;;977198

open lake forecast for lake superior
national weather service marquette mi
400 pm 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 29.4 inch low over upper lower michigan will move to lake huron 
this 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. troughing 
around 29.7 inches remains over lake superior through wednesday as a 
29.5 inch low tracks to the south.



lsz263-210900-
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 pm est fri feb 20 2026

.late this afternoon...north winds 15 to 25 knots. freezing
spray. snow. waves 4 to 8 feet occasionally to 10 feet. 
.tonight...north winds 10 to 20 knots backing northwest by
midnight. freezing spray in the evening. snow in the evening,
then a chance of snow after midnight. waves subsiding to 2 to
4 feet. 
.saturday...north winds 10 to 20 knots diminishing to 5 to
15 knots. a chance of snow. waves building to 3 to 5 feet
occasionally to 7 feet, then subsiding to 1 to 3 feet. 
.saturday night...north winds 10 to 20 knots increasing to 15 to
25 knots by midnight. a chance of snow. waves building to 3 to
6 feet occasionally to 8 feet. 
.sunday...north winds 15 to 25 knots increasing to gales to
35 knots in the afternoon. a slight chance of snow showers. waves
building to 4 to 7 feet occasionally to 9 feet. 
.sunday night...north gales to 35 knots diminishing to 20 to
30 knots after midnight. heavy freezing spray. waves building to
7 to 10 feet occasionally to 13 feet, then subsiding to 5 to
8 feet occasionally to 10 feet. 
.monday...north winds 20 to 30 knots diminishing to 10 to
20 knots in the afternoon. waves subsiding to 1 to 3 feet. 
.monday night...east winds 5 to 15 knots becoming southeast 15 to
25 knots after midnight. a chance of snow showers. waves
subsiding to calm to 2 feet, then building to 2 to 4 feet. 
.tuesday...south winds 15 to 25 knots veering west. snow showers
likely, then a chance of snow showers. freezing spray. waves
building to 4 to 8 feet occasionally to 10 feet. 
.wednesday...northwest winds 10 to 20 knots. waves subsiding to
2 to 4 feet, then building to 3 to 5 feet occasionally to 7 feet.

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 202101
glfls 
expires:202602210900;;977199

open lake forecast for lake superior
national weather service marquette mi
400 pm 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 29.4 inch low over upper lower michigan will move to lake huron 
this 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. troughing 
around 29.7 inches remains over lake superior through wednesday as a 
29.5 inch low tracks to the south.



lsz264-210900-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
400 pm est fri feb 20 2026

.late this afternoon...north winds 15 to 25 knots. freezing
spray. snow. waves 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 in the evening. snow. waves
subsiding to 3 to 5 feet occasionally to 7 feet. 
.saturday...north winds 5 to 15 knots. snow. waves subsiding to
2 to 4 feet. 
.saturday night...north winds 10 to 20 knots increasing to 15 to
25 knots by midnight. a chance of snow. waves building to 3 to
6 feet occasionally to 8 feet. 
.sunday...north winds 20 to 30 knots increasing to gales to
35 knots in the afternoon. heavy freezing spray. a slight 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 6 to 10 feet
occasionally to 13 feet. 
.monday...north winds 20 to 30 knots diminishing to 10 to
20 knots in the afternoon. heavy freezing spray in the morning. a
chance of snow showers in the morning. waves subsiding to 2 to
4 feet. 
.monday night...northeast winds 5 to 15 knots becoming southeast
15 to 25 knots after midnight. a chance of snow showers. 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 backing southeast. freezing
spray. snow showers likely. a chance of snow showers. waves
building to 7 to 10 feet occasionally to 13 feet. 
.wednesday...northwest winds 15 to 25 knots. freezing spray.
waves subsiding to 3 to 6 feet occasionally to 8 feet, then
building to 4 to 7 feet occasionally to 9 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 202101
glfls 
expires:202602210900;;977200

open lake forecast for lake superior
national weather service marquette mi
400 pm 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 29.4 inch low over upper lower michigan will move to lake huron 
this 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. troughing 
around 29.7 inches remains over lake superior through wednesday as a 
29.5 inch low tracks to the south.



lsz265-210900-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
400 pm est fri feb 20 2026

.late this afternoon...north winds 15 to 25 knots. snow. waves
4 to 7 feet occasionally to 9 feet subsiding to 3 to 6 feet
occasionally to 8 feet. 
.tonight...northwest winds 20 to 30 knots diminishing to 15 to
25 knots late. snow. waves building to 4 to 7 feet occasionally
to 9 feet, then subsiding to 3 to 5 feet occasionally to 7 feet. 
.saturday...northwest winds 15 to 25 knots diminishing to 10 to
20 knots by late morning, then becoming north 15 to 25 knots by
mid afternoon. snow. waves subsiding to 2 to 4 feet. 
.saturday night...northwest winds 15 to 25 knots increasing to
20 to 30 knots by midnight, then veering north late. snow likely
in the evening, then a chance of snow showers after midnight.
waves building to 3 to 6 feet occasionally to 8 feet. 
.sunday...north gales to 40 knots. freezing spray. a chance of
snow showers. waves building to 7 to 10 feet occasionally to
13 feet. 
.sunday night...north gales to 40 knots. heavy freezing spray. a
chance of snow showers. waves building to 9 to 12 feet
occasionally to 15 feet. 
.monday...north winds 20 to 30 knots diminishing to 15 to
25 knots in the afternoon. heavy freezing spray. a chance of snow
showers. waves subsiding to 3 to 6 feet occasionally to 8 feet. 
.monday night...north winds 5 to 15 knots becoming south 10 to
20 knots after midnight. waves subsiding to 1 to 3 feet, then
building to 2 to 4 feet. 
.tuesday...south winds 15 to 25 knots. freezing spray. snow
showers likely. a chance of snow showers. waves building to 4 to
7 feet occasionally to 9 feet, then subsiding to 3 to 6 feet
occasionally to 8 feet. 
.wednesday...west winds 20 to 30 knots veering northwest.
freezing spray. 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 202101
glfls 
expires:202602210900;;977201

open lake forecast for lake superior
national weather service marquette mi
400 pm 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 29.4 inch low over upper lower michigan will move to lake huron 
this 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. troughing 
around 29.7 inches remains over lake superior through wednesday as a 
29.5 inch low tracks to the south.



lsz266-210900-
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 pm est fri feb 20 2026

.late this afternoon...northeast winds 15 to 25 knots. snow,
possibly mixed with rain. waves 3 to 6 feet occasionally to
8 feet. 
.tonight...northeast winds 15 to 25 knots. snow, possibly mixed
with rain in the evening, then a chance of snow after midnight.
waves building to 4 to 7 feet occasionally to 9 feet, then
subsiding to 3 to 6 feet occasionally to 8 feet. 
.saturday...east winds 15 to 25 knots becoming northeast 10 to
20 knots by late morning, then backing north by mid afternoon. a
chance of snow. waves subsiding to 2 to 4 feet. 
.saturday night...north winds 15 to 25 knots. a chance of snow.
waves building to 3 to 6 feet occasionally to 8 feet. 
.sunday...north winds 20 to 30 knots increasing to gales to
35 knots in the afternoon. freezing spray. a chance of snow
showers. waves building to 7 to 10 feet occasionally to 13 feet. 
.sunday night...north gales to 40 knots. heavy freezing spray. a
chance of snow showers. waves building to 9 to 12 feet
occasionally to 15 feet. 
.monday...north gales to 35 knots diminishing to 15 to 25 knots
in the afternoon. heavy freezing spray. a chance of snow showers.
waves subsiding to 3 to 6 feet occasionally to 8 feet. 
.monday night...north winds 10 to 20 knots becoming southeast
15 to 25 knots after midnight. waves subsiding to 1 to 3 feet,
then building to 2 to 4 feet. 
.tuesday...southeast winds 20 to 30 knots. heavy freezing spray.
snow showers likely. a chance of snow showers. waves building to
7 to 10 feet occasionally to 13 feet. 
.wednesday...northwest winds 20 to 30 knots. freezing spray. a
chance of snow showers. waves subsiding to 5 to 8 feet
occasionally to 10 feet, then building to 7 to 10 feet
occasionally to 13 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 202101
glfls 
expires:202602210900;;977202

open lake forecast for lake superior
national weather service marquette mi
400 pm 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 29.4 inch low over upper lower michigan will move to lake huron 
this 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. troughing 
around 29.7 inches remains over lake superior through wednesday as a 
29.5 inch low tracks to the south.



lsz267-210900-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
400 pm est fri feb 20 2026

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

note, wave height forecasts are for ice free areas.

$$