fzus63 kdtx 272041
glflh 
expires:202511280445;;612842

open lake forecast for lake huron
national weather service detroit/pontiac mi
341 pm est thu nov 27 2025

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, begins to depart for
northeastern ontario thursday setting up northwesterly flow in
its wake. despite departure, influence of the system maintains
strong winds and lake effect snow showers through thursday into
early friday. high pressure, 30.40 inches, then gradually expands
across the region friday into saturday. another low, 29.60
inches, is forecast to lift across the southern great lakes from
the midwest saturday night and sunday, bringing widespread snow
with a chance for gusty winds in the wake of the system sunday
night.


lhz363-462-280445-
lake huron from sturgeon point to alabaster mi beyond 5nm off
shore-
lake huron from port austin to harbor beach beyond 5nm off shore-
341 pm est thu nov 27 2025

...gale warning in effect through friday morning...

.tonight...northwest winds to 30 knots with gusts to 35 knot
gales. numerous snow showers. waves 12 to 16 feet. waves
occasionally around 20 feet. 
.friday...northwest winds to 30 knots decreasing to 20 to
25 knots late in the afternoon. gusts to 35 knot gales. scattered
snow showers. waves 12 to 16 feet. waves occasionally around
20 feet. 
.friday night...northwest winds 20 to 25 knots with gusts to
around 30 knots becoming west 15 to 20 knots after midnight.
scattered snow showers. waves 8 to 12 feet. waves occasionally
around 15 feet. 
.saturday...west winds 10 to 15 knots decreasing to 5 to 10 knots
in the late morning and early afternoon...then backing to the
south early in the afternoon. a chance of snow in the afternoon.
waves 3 to 5 feet subsiding to 1 to 3 feet early in the
afternoon. 
.saturday night...south winds 10 to 15 knots becoming southeast
15 to 20 knots in the late evening and overnight. snow. waves
2 to 4 feet building to 5 to 7 feet in the late evening and
overnight. waves occasionally around 10 feet. 
.sunday...southeast winds 15 to 20 knots becoming west 20 to
25 knots with gusts to around 30 knots late in the morning...then
becoming northwest to 30 knots with gusts to 35 knot gales late
in the afternoon decreasing to 20 to 25 knots with gusts to
around 30 knots late in the evening. rain in the morning. snow. a
chance of snow late in the afternoon. waves 8 to 12 feet. waves
occasionally around 15 feet. 
.monday...west winds 15 to 20 knots becoming southwest 10 to
15 knots. waves 6 to 9 feet subsiding to 2 to 4 feet. waves
occasionally around 12 feet. 
.tuesday...southwest winds 10 to 15 knots becoming west 15 to
20 knots in the late evening and early morning. a chance of snow
early in the morning. waves 3 to 5 feet. 


$$

fzus63 kdtx 272041
glflh 
expires:202511280445;;612841

open lake forecast for lake huron
national weather service detroit/pontiac mi
341 pm est thu nov 27 2025

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, begins to depart for
northeastern ontario thursday setting up northwesterly flow in
its wake. despite departure, influence of the system maintains
strong winds and lake effect snow showers through thursday into
early friday. high pressure, 30.40 inches, then gradually expands
across the region friday into saturday. another low, 29.60
inches, is forecast to lift across the southern great lakes from
the midwest saturday night and sunday, bringing widespread snow
with a chance for gusty winds in the wake of the system sunday
night.


lhz361-362-280445-
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-
341 pm est thu nov 27 2025

...gale warning in effect through friday morning...

.tonight...northwest winds to 30 knots with gusts to 35 knot
gales. numerous snow showers in the evening...then scattered snow
showers after midnight. waves 12 to 16 feet. waves occasionally
around 20 feet. 
.friday...northwest winds to 30 knots with gusts to 35 knot
gales. scattered snow showers. waves 10 to 14 feet. waves
occasionally around 18 feet. 
.friday night...northwest winds 20 to 25 knots with gusts to
around 30 knots decreasing to 10 to 15 knots. scattered snow
showers. waves 8 to 12 feet. waves occasionally around 15 feet. 
.saturday...west winds 5 to 10 knots backing to the south early
in the afternoon. a chance of snow in the afternoon. waves 3 to
5 feet subsiding to 1 to 3 feet in the late morning and
afternoon. 
.saturday night...south winds 5 to 10 knots becoming southeast
10 to 15 knots in the late evening and overnight. snow. snow may
be heavy at times after midnight. waves 1 to 3 feet building to
3 to 5 feet in the late evening and overnight. 
.sunday...east winds 10 to 15 knots becoming northwest 20 to
25 knots with gusts to around 30 knots late in the morning...then
increasing to 30 knots late in the afternoon decreasing to 15 to
20 knots late in the evening. snow. a chance of snow late in the
afternoon. waves 6 to 9 feet. waves occasionally around 12 feet. 
.monday...northwest winds 10 to 15 knots backing to the
southwest. a chance of snow until early morning. waves 5 to
7 feet subsiding to 2 to 4 feet until early morning. waves
occasionally around 10 feet. 
.tuesday...southwest winds 10 to 15 knots becoming west 15 to
20 knots in the late evening and early morning. a chance of snow
early in the morning. waves 3 to 5 feet. 


$$

fzus63 kmkx 272006
glflm 
expires:202511280415;;611084

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
206 pm cst thu nov 27 2025

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 29.4 inches over western quebec will slowly move
eastward through friday with some weakening. occasional gale force
gusts will continue today over all of the lake, then into this
evening over the northern one third of the lake. a ridge of high 
pressure will then move across the lake friday night with light 
and variable winds expected. 

low pressure of 29.8 inches will then track from eastern kansas 
saturday morning to the southern tip of lake michigan saturday 
night, and then reach lake huron by mid sunday while deepening to
29.7 inches. widespread, moderate to heavy snow will overspread 
the south half of lake michigan. brisk southeast winds saturday 
will become easterly and then westerly as the low crosses the 
great lakes region. gales are not anticipated at this time, 
although a period of gusty northwest winds is expected sunday.


lmz080-366-565-567-669-671-673-675-777-779-868-870-872-874-876-
878-280415-
lake michigan from michigan city in to st. joseph mi 5 nm
offshore to mid lake-
lake michigan from point betsie to manistee mi 5 nm offshore to
mid lake-
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 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 pentwater to manistee mi 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-
206 pm cst thu nov 27 2025

sturgeon bay wi to point betsie mi south...

...gale warning in effect until 6 pm cst this evening...

.tonight...northwest gales to 35 kt diminishing to 30 kt. chance
of snow showers. waves 8 to 12 ft occasionally to 16 ft subsiding
to 8 to 11 ft occasionally to 14 ft. 
.friday...northwest winds to 30 kt diminishing to 10 to 20 kt.
slight chance of snow showers. waves 7 to 10 ft occasionally to
13 ft subsiding to 4 to 7 ft occasionally to 9 ft. 
.friday night...northwest winds 10 to 20 kt diminishing to 5 to
10 kt late in the evening, then becoming west after midnight
becoming southwest late. chance of snow. waves 3 to 5 ft
subsiding to 1 to 2 ft. 
.saturday...south winds 10 to 20 kt becoming southeast to 30 kt
in the afternoon. snow. waves 3 to 5 ft building to 6 to 9 ft
occasionally to 12 ft. 
.saturday night...southeast winds to 30 kt becoming east 15 to
25 kt. snow. waves 6 to 9 ft occasionally to 12 ft. 
.sunday...northwest winds to 30 kt. snow in the morning, then
chance of snow in the afternoon. waves 6 to 9 ft occasionally to
12 ft building to 8 to 11 ft occasionally to 14 ft. 
.sunday night...northwest winds to 30 kt diminishing to 10 to
20 kt. chance of snow showers. waves 8 to 11 ft occasionally to
14 ft subsiding to 5 to 8 ft occasionally to 10 ft. 
.monday...west winds 10 to 15 kt increasing to 10 to 20 kt. waves
3 to 5 ft subsiding to 2 to 4 ft. 
.tuesday...west winds 10 to 20 kt. waves 3 to 5 ft.  

$$

fzus63 kmkx 272006
glflm 
expires:202511280415;;611083

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
206 pm cst thu nov 27 2025

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 29.4 inches over western quebec will slowly move
eastward through friday with some weakening. occasional gale force
gusts will continue today over all of the lake, then into this
evening over the northern one third of the lake. a ridge of high 
pressure will then move across the lake friday night with light 
and variable winds expected. 

low pressure of 29.8 inches will then track from eastern kansas 
saturday morning to the southern tip of lake michigan saturday 
night, and then reach lake huron by mid sunday while deepening to
29.7 inches. widespread, moderate to heavy snow will overspread 
the south half of lake michigan. brisk southeast winds saturday 
will become easterly and then westerly as the low crosses the 
great lakes region. gales are not anticipated at this time, 
although a period of gusty northwest winds is expected sunday.


lmz261-362-364-563-280415-
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 rock island passage to sturgeon bay wi-
206 pm cst thu nov 27 2025

sturgeon bay wi to point betsie mi north...

...gale warning in effect until midnight cst tonight...

.tonight...northwest gales to 35 kt. snow showers likely this 
evening, then chance of snow showers overnight. waves 7 to 10 ft 
occasionally to 13 ft. 
.friday...northwest winds to 30 kt diminishing to 15 to 25 kt.
chance of snow showers. waves 5 to 8 ft occasionally to 10 ft
subsiding to 4 to 7 ft occasionally to 9 ft. 
.friday night...northwest winds 15 to 25 kt diminishing to 5 to
10 kt. chance of snow in the evening. waves 4 to 6 ft
occasionally to 8 ft subsiding to 1 to 3 ft. 
.saturday...west winds 10 to 15 kt backing to southeast. snow
likely in the afternoon. waves 1 to 3 ft. 
.saturday night...southeast winds 10 to 20 kt becoming east.
snow. waves 3 to 5 ft. 
.sunday...north winds to 30 kt becoming northwest. snow in the
morning, then snow likely in the afternoon. waves 3 to 5 ft
building to 4 to 6 ft occasionally to 8 ft. 
.sunday night...northwest winds to 30 kt diminishing to 15 to
25 kt. chance of snow showers. waves 4 to 6 ft occasionally to
8 ft subsiding to 3 to 5 ft. 
.monday...west winds 10 to 20 kt becoming southwest. waves 2 to
4 ft. 
.tuesday...west winds 15 to 25 kt becoming southwest. waves 3 to
5 ft.  

$$

fzus63 kmqt 272101
glfls 
expires:202511280900;;613487

open lake forecast for lake superior
national weather service marquette mi
400 pm est thu nov 27 2025

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

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

.synopsis...

lake superior will spend the rest of thanksgiving between a 30.6 
inch high over the dakotas and a 29.4 inch low over quebec. by 
friday, the high will weaken slightly to 30.5 inches as it shifts 
over the upper mississippi river valley while the low weakens to 
29.5 inches, still over quebec. meanwhile, a 29.7 inch colorado low 
develops, which will move over oklahoma at 29.8 inches on saturday 
while 30.4 inch high pressure spans the great lakes. the low ejects 
into the southern great lakes basin early sunday morning at 29.9 
inches, reaching the southern ontario/quebec border at 29.8 inches 
sunday evening. in its wake, 30.6 inch high pressure moves over the 
upper midwest, sliding south of the great lakes at 30.4 inches 
monday. the high is eroded on tuesday by a low pressure of around 
29.8 inches over northern ontario and a 29.5 inch nor'easter off the 
coast of the chesapeake bay.



lsz265-280900-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
400 pm est thu nov 27 2025

...gale warning in effect until 1 am est friday...

.late this afternoon...northwest gales to 35 knots. a chance of
snow showers. waves 9 to 12 feet occasionally to 15 feet. 
.tonight...northwest gales to 35 knots. a chance of snow showers.
waves subsiding to 7 to 10 feet occasionally to 13 feet. 
.friday...northwest winds 20 to 30 knots diminishing to 15 to
25 knots by mid afternoon. a chance of snow showers. waves
subsiding to 3 to 6 feet occasionally to 8 feet. 
.friday night...northwest winds 15 to 25 knots diminishing to
10 to 20 knots by midnight, then backing west late. a chance of
snow showers. waves subsiding to calm to 2 feet. 
.saturday...west winds 10 to 20 knots becoming north 5 to
15 knots in the afternoon. a chance of snow showers. waves calm
to 2 feet. 
.saturday night...northeast winds 5 to 15 knots becoming north
15 to 25 knots after midnight. snow showers. waves building to
1 to 3 feet. 
.sunday...north winds 20 to 30 knots becoming northwest gales to
35 knots in the afternoon. snow showers likely. waves building to
4 to 7 feet occasionally to 9 feet. 
.sunday night...northwest winds 20 to 30 knots becoming west
15 to 25 knots after midnight. snow showers likely. waves
subsiding to 2 to 4 feet. 
.monday...west winds 15 to 25 knots backing southwest. a chance
of snow showers. waves subsiding to 1 to 3 feet. 
.tuesday...southwest winds 15 to 25 knots veering west. a chance
of snow showers. waves subsiding to calm to 2 feet, then building
to 1 to 3 feet. 

$$

fzus63 kmqt 272101
glfls 
expires:202511280900;;613488

open lake forecast for lake superior
national weather service marquette mi
400 pm est thu nov 27 2025

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

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

.synopsis...

lake superior will spend the rest of thanksgiving between a 30.6 
inch high over the dakotas and a 29.4 inch low over quebec. by 
friday, the high will weaken slightly to 30.5 inches as it shifts 
over the upper mississippi river valley while the low weakens to 
29.5 inches, still over quebec. meanwhile, a 29.7 inch colorado low 
develops, which will move over oklahoma at 29.8 inches on saturday 
while 30.4 inch high pressure spans the great lakes. the low ejects 
into the southern great lakes basin early sunday morning at 29.9 
inches, reaching the southern ontario/quebec border at 29.8 inches 
sunday evening. in its wake, 30.6 inch high pressure moves over the 
upper midwest, sliding south of the great lakes at 30.4 inches 
monday. the high is eroded on tuesday by a low pressure of around 
29.8 inches over northern ontario and a 29.5 inch nor'easter off the 
coast of the chesapeake bay.



lsz266-280900-
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 thu nov 27 2025

...gale warning in effect through friday morning...

.late this afternoon...north gales to 45 knots. a chance of snow
showers. waves 12 to 17 feet occasionally to 21 feet. 
.tonight...north gales to 40 knots backing northwest late. a
chance of snow showers. waves subsiding to 10 to 14 feet
occasionally to 18 feet. 
.friday...northwest gales to 35 knots diminishing to 20 to
30 knots by mid afternoon. a chance of snow showers. waves
subsiding to 6 to 9 feet occasionally to 11 feet. 
.friday night...northwest winds 15 to 25 knots diminishing to
10 to 20 knots by midnight. snow showers in the evening. a chance
of snow showers after midnight. waves subsiding to 2 to 4 feet. 
.saturday...northwest winds 10 to 20 knots becoming north 5 to
15 knots in the afternoon. a chance of snow showers in the
morning, then snow showers in the afternoon. waves subsiding to
calm to 2 feet. 
.saturday night...northeast winds 5 to 15 knots becoming north
15 to 25 knots after midnight. snow showers. waves building to
1 to 3 feet. 
.sunday...north winds 20 to 30 knots becoming northwest gales to
35 knots in the afternoon. snow showers. waves building to 7 to
10 feet occasionally to 13 feet. 
.sunday night...northwest gales to 35 knots diminishing to 15 to
25 knots after midnight. snow showers. waves subsiding to 5 to
8 feet occasionally to 10 feet. 
.monday...west winds 15 to 25 knots backing southwest. a chance
of snow showers. waves subsiding to 3 to 6 feet occasionally to
8 feet. 
.tuesday...southwest winds 15 to 25 knots. a chance of snow
showers. waves subsiding to 3 to 6 feet occasionally to 8 feet. 

$$

fzus63 kmqt 272101
glfls 
expires:202511280900;;613489

open lake forecast for lake superior
national weather service marquette mi
400 pm est thu nov 27 2025

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

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

.synopsis...

lake superior will spend the rest of thanksgiving between a 30.6 
inch high over the dakotas and a 29.4 inch low over quebec. by 
friday, the high will weaken slightly to 30.5 inches as it shifts 
over the upper mississippi river valley while the low weakens to 
29.5 inches, still over quebec. meanwhile, a 29.7 inch colorado low 
develops, which will move over oklahoma at 29.8 inches on saturday 
while 30.4 inch high pressure spans the great lakes. the low ejects 
into the southern great lakes basin early sunday morning at 29.9 
inches, reaching the southern ontario/quebec border at 29.8 inches 
sunday evening. in its wake, 30.6 inch high pressure moves over the 
upper midwest, sliding south of the great lakes at 30.4 inches 
monday. the high is eroded on tuesday by a low pressure of around 
29.8 inches over northern ontario and a 29.5 inch nor'easter off the 
coast of the chesapeake bay.



lsz267-280900-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
400 pm est thu nov 27 2025

...gale warning in effect through friday morning...

.late this afternoon...north gales to 40 knots. snow showers.
waves 11 to 15 feet occasionally to 19 feet. 
.tonight...north gales to 40 knots. a chance of snow showers.
waves subsiding to 9 to 12 feet occasionally to 15 feet. 
.friday...north gales to 35 knots backing northwest by mid
afternoon. a chance of snow showers. waves subsiding to 6 to
9 feet occasionally to 11 feet. 
.friday night...northwest winds 15 to 25 knots diminishing to
10 to 20 knots by midnight. snow showers in the evening, then a
chance of snow showers after midnight. waves subsiding to 2 to
4 feet. 
.saturday...west winds 10 to 20 knots backing southwest in the
afternoon. snow showers. waves subsiding to calm to 2 feet. 
.saturday night...southeast winds 10 to 20 knots backing east
after midnight. snow showers. waves calm to 2 feet. 
.sunday...north winds 15 to 25 knots becoming northwest 20 to
30 knots in the afternoon. snow showers. waves building to 6 to
9 feet occasionally to 11 feet. 
.sunday night...northwest winds 20 to 30 knots diminishing to
15 to 25 knots after midnight. snow showers. waves building to
7 to 10 feet occasionally to 13 feet, then subsiding to 5 to
8 feet occasionally to 10 feet. 
.monday...west winds 15 to 25 knots backing southwest. snow
showers likely. waves subsiding to 3 to 5 feet occasionally to
7 feet. 
.tuesday...southwest winds 15 to 25 knots. snow showers likely.
waves building to 3 to 6 feet occasionally to 8 feet. 

$$

fzus63 kmqt 272101
glfls 
expires:202511280900;;613484

open lake forecast for lake superior
national weather service marquette mi
400 pm est thu nov 27 2025

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

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

.synopsis...

lake superior will spend the rest of thanksgiving between a 30.6 
inch high over the dakotas and a 29.4 inch low over quebec. by 
friday, the high will weaken slightly to 30.5 inches as it shifts 
over the upper mississippi river valley while the low weakens to 
29.5 inches, still over quebec. meanwhile, a 29.7 inch colorado low 
develops, which will move over oklahoma at 29.8 inches on saturday 
while 30.4 inch high pressure spans the great lakes. the low ejects 
into the southern great lakes basin early sunday morning at 29.9 
inches, reaching the southern ontario/quebec border at 29.8 inches 
sunday evening. in its wake, 30.6 inch high pressure moves over the 
upper midwest, sliding south of the great lakes at 30.4 inches 
monday. the high is eroded on tuesday by a low pressure of around 
29.8 inches over northern ontario and a 29.5 inch nor'easter off the 
coast of the chesapeake bay.



lsz162-280900-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
400 pm est thu nov 27 2025 /300 pm cst thu nov 27 2025/

.late this afternoon...northwest winds 20 to 30 knots. waves 3 to
6 feet occasionally to 8 feet. 
.tonight...northwest winds 20 to 30 knots diminishing to 15 to
25 knots by midnight. waves subsiding to 3 to 5 feet occasionally
to 7 feet. 
.friday...northwest winds 15 to 25 knots diminishing to 10 to
20 knots. waves subsiding to calm to 2 feet. 
.friday night...northwest winds 5 to 15 knots veering north by
midnight. waves calm to 2 feet. 
.saturday...north winds 5 to 15 knots veering northeast in the
afternoon. a chance of snow showers. waves calm to 2 feet. 
.saturday night...north winds 10 to 20 knots increasing to 15 to
25 knots after midnight. a chance of snow showers. waves building
to 1 to 3 feet. 
.sunday...northwest winds 15 to 25 knots. waves 1 to 3 feet. 
.sunday night...northwest winds 10 to 20 knots backing west after
midnight. waves subsiding to calm to 2 feet. 
.monday...southwest winds 15 to 25 knots veering west. waves
building to 1 to 3 feet. 
.tuesday...southwest winds 10 to 20 knots veering west. a chance
of snow showers. waves 1 to 3 feet. 

$$

fzus63 kmqt 272101
glfls 
expires:202511280900;;613485

open lake forecast for lake superior
national weather service marquette mi
400 pm est thu nov 27 2025

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

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

.synopsis...

lake superior will spend the rest of thanksgiving between a 30.6 
inch high over the dakotas and a 29.4 inch low over quebec. by 
friday, the high will weaken slightly to 30.5 inches as it shifts 
over the upper mississippi river valley while the low weakens to 
29.5 inches, still over quebec. meanwhile, a 29.7 inch colorado low 
develops, which will move over oklahoma at 29.8 inches on saturday 
while 30.4 inch high pressure spans the great lakes. the low ejects 
into the southern great lakes basin early sunday morning at 29.9 
inches, reaching the southern ontario/quebec border at 29.8 inches 
sunday evening. in its wake, 30.6 inch high pressure moves over the 
upper midwest, sliding south of the great lakes at 30.4 inches 
monday. the high is eroded on tuesday by a low pressure of around 
29.8 inches over northern ontario and a 29.5 inch nor'easter off the 
coast of the chesapeake bay.



lsz263-280900-
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 thu nov 27 2025

.late this afternoon...north winds 20 to 30 knots. a slight
chance of snow showers. waves 5 to 8 feet occasionally to
10 feet. 
.tonight...north winds 20 to 30 knots backing northwest late. a
slight chance of snow showers. waves subsiding to 4 to 7 feet
occasionally to 9 feet. 
.friday...northwest winds 15 to 25 knots diminishing to 10 to
20 knots. a slight chance of snow showers in the morning. waves
subsiding to 1 to 3 feet. 
.friday night...northwest winds 5 to 15 knots. waves subsiding to
calm to 2 feet. 
.saturday...north winds 5 to 15 knots veering northeast in the
afternoon. a chance of snow showers. waves calm to 2 feet. 
.saturday night...north winds 10 to 20 knots increasing to 15 to
25 knots after midnight. a chance of snow showers. waves building
to 2 to 4 feet. 
.sunday...northwest winds 20 to 30 knots. a chance of snow
showers. waves building to 3 to 6 feet occasionally to 8 feet. 
.sunday night...northwest winds 15 to 25 knots becoming west
10 to 20 knots after midnight. a chance of snow showers. waves
subsiding to 2 to 4 feet. 
.monday...west winds 20 to 30 knots backing southwest. waves
building to 3 to 5 feet occasionally to 7 feet. 
.tuesday...southwest winds 15 to 25 knots veering west. a chance
of snow showers. waves subsiding to 2 to 4 feet, then building to
3 to 5 feet occasionally to 7 feet. 

$$

fzus63 kmqt 272101
glfls 
expires:202511280900;;613486

open lake forecast for lake superior
national weather service marquette mi
400 pm est thu nov 27 2025

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

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

.synopsis...

lake superior will spend the rest of thanksgiving between a 30.6 
inch high over the dakotas and a 29.4 inch low over quebec. by 
friday, the high will weaken slightly to 30.5 inches as it shifts 
over the upper mississippi river valley while the low weakens to 
29.5 inches, still over quebec. meanwhile, a 29.7 inch colorado low 
develops, which will move over oklahoma at 29.8 inches on saturday 
while 30.4 inch high pressure spans the great lakes. the low ejects 
into the southern great lakes basin early sunday morning at 29.9 
inches, reaching the southern ontario/quebec border at 29.8 inches 
sunday evening. in its wake, 30.6 inch high pressure moves over the 
upper midwest, sliding south of the great lakes at 30.4 inches 
monday. the high is eroded on tuesday by a low pressure of around 
29.8 inches over northern ontario and a 29.5 inch nor'easter off the 
coast of the chesapeake bay.



lsz264-280900-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
400 pm est thu nov 27 2025

...gale warning in effect until 1 am est friday...

.late this afternoon...north gales to 35 knots. a slight chance
of snow showers. waves 9 to 12 feet occasionally to 15 feet
subsiding to 8 to 11 feet occasionally to 14 feet. 
.tonight...north gales to 35 knots diminishing to 20 to 30 knots
late. a slight chance of snow showers. waves subsiding to 6 to
9 feet occasionally to 11 feet. 
.friday...north winds 20 to 30 knots becoming northwest 15 to
25 knots. a slight chance of snow showers. waves subsiding to
3 to 5 feet occasionally to 7 feet. 
.friday night...northwest winds 10 to 20 knots diminishing to
5 to 15 knots by midnight. waves subsiding to calm to 2 feet. 
.saturday...northwest winds 5 to 15 knots veering north in the
afternoon. a slight chance of snow showers in the afternoon.
waves calm to 2 feet. 
.saturday night...north winds 5 to 15 knots increasing to 15 to
25 knots after midnight. a chance of snow showers. waves building
to 2 to 4 feet. 
.sunday...north winds 20 to 30 knots backing northwest in the
afternoon. a chance of snow showers. waves building to 4 to
7 feet occasionally to 9 feet. 
.sunday night...northwest winds 20 to 30 knots diminishing to
15 to 25 knots after midnight. waves subsiding to 3 to 6 feet
occasionally to 8 feet. 
.monday...west winds 15 to 25 knots increasing to 20 to 30 knots.
a chance of snow showers. waves subsiding to 3 to 6 feet
occasionally to 8 feet. 
.tuesday...west winds 15 to 25 knots. a chance of snow showers.
waves subsiding to 3 to 5 feet occasionally to 7 feet. 

$$