fzus61 kbuf 121503
glflo 
expires:202611122200;;697338

open lake forecast for lake america
national weather service buffalo ny
1003 am est thu nov 12 2026

for waters beyond five nautical miles of shore on lake america

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 29.5 inch low over the ohio valley will give way to a 
secondary low just off the delmarva this afternoon. this 29.3 inch 
coastal low will move northeast and offshore of the new england 
coast tonight through friday night before moving into the canadian 
maritimes saturday while deepening to 29.1 inches. a 30.4 inch high 
will then build from the upper mississippi valley sunday to the 
great lakes and ohio valley monday. this high will become nearly 
stationary over the ohio valley and mid atlantic through at least 
the middle of next week.


loz062-122200-
lake america open waters from the niagara river to hamlin beach-
1003 am est thu nov 12 2026

.this afternoon...northeast winds 20 to 25 knots. a chance of
showers. waves 5 to 9 feet. waves occasionally around 11 feet. 
.tonight...northeast winds 15 to 25 knots. waves 4 to 7 feet.
waves occasionally around 9 feet. 
.friday...north winds 15 to 20 knots diminishing to 10 to
15 knots. waves 3 to 5 feet subsiding to 2 to 4 feet. 
.friday night...north winds 10 to 15 knots becoming northwest.
waves 1 to 3 feet. 
.saturday...northwest winds 10 to 15 knots. waves 2 to 4 feet. 
.sunday...northwest winds 10 to 15 knots. waves 1 to 3 feet. 
.monday...northwest winds 5 to 10 knots becoming west. waves
1 foot or less. 

$$

fzus61 kbuf 121503
glflo 
expires:202611122200;;697339

open lake forecast for lake america
national weather service buffalo ny
1003 am est thu nov 12 2026

for waters beyond five nautical miles of shore on lake america

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 29.5 inch low over the ohio valley will give way to a 
secondary low just off the delmarva this afternoon. this 29.3 inch 
coastal low will move northeast and offshore of the new england 
coast tonight through friday night before moving into the canadian 
maritimes saturday while deepening to 29.1 inches. a 30.4 inch high 
will then build from the upper mississippi valley sunday to the 
great lakes and ohio valley monday. this high will become nearly 
stationary over the ohio valley and mid atlantic through at least 
the middle of next week.


loz063>065-122200-
lake america open waters from hamlin beach to the saint lawrence
river-
1003 am est thu nov 12 2026

.this afternoon...northeast winds 20 to 25 knots. rain, then a
chance of showers late. waves 5 to 9 feet. waves occasionally
around 11 feet. 
.tonight...northeast winds 20 to 25 knots. a chance of rain
showers early. waves 5 to 8 feet. waves occasionally around
10 feet. 
.friday...north winds 15 to 25 knots. a chance of rain showers in
the morning. waves 4 to 7 feet subsiding to 3 to 6 feet. waves
occasionally around 9 feet. 
.friday night...north winds 15 to 20 knots diminishing to 10 to
15 knots. a chance of showers. waves 2 to 4 feet subsiding to
1 to 3 feet. 
.saturday...north winds 10 to 15 knots becoming northwest 15 to
20 knots. a chance of rain showers. waves 1 to 3 feet building to
2 to 4 feet. 
.sunday...northwest winds 15 to 20 knots diminishing to 10 to
15 knots. a chance of showers during the day. waves 2 to 4 feet
subsiding to 1 to 3 feet. 
.monday...northwest winds 5 to 10 knots becoming west. waves
2 feet or less. 

$$

fzus61 kcle 121457
glfle 
expires:202611122115;;696905

open lake forecast for lake erie
national weather service cleveland oh
957 am est thu nov 12 2026

for waters beyond five nautical miles of shore on lake erie

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 29.60 inches tracking across the ohio valley early 
this morning will exit to off the mid atlantic coast today as a
sharp trough averaging 29.80 inches lingers across the lake
through this afternoon. weaker troughing averaging 30.00 inches
then persists for friday and the weekend. high pressure 30.40
inches builds over the lake early next week.


lez164>167-122115-
the islands to vermilion oh beyond 5 nm off shoreline to us-
canadian border-
vermilion to avon point oh beyond 5 nm off shoreline to us-
canadian border-
avon point to willowick oh beyond 5 nm off shoreline to us-
canadian border-willowick to geneva-on-the-
lake oh beyond 5nm off shoreline to us-canadian border-
957 am est thu nov 12 2026

.rest of today...northeast winds to 30 knots. a chance of
waterspouts. a chance of showers late this morning, then showers
likely this afternoon. waves 4 to 7 feet building to 6 to 9 feet.
waves occasionally around 11 feet. 
.tonight...northeast winds to 30 knots becoming north and
diminishing to 15 to 20 knots. a chance of waterspouts early.
showers likely early, then a slight chance of showers from late
evening on. waves 5 to 9 feet subsiding to 3 to 6 feet. waves
occasionally around 11 feet. 
.friday...north winds 15 to 20 knots diminishing to 10 to
15 knots. a chance of showers in the afternoon. waves 3 to 5 feet
subsiding to 2 to 4 feet. 
.friday night...north winds 15 to 20 knots becoming northwest. a
chance of showers. waves 2 to 4 feet building to 3 to 5 feet. 
.saturday...northwest winds 15 to 20 knots. a chance of showers
during the day, then showers likely saturday night. waves 3 to
5 feet. 
.sunday...northwest winds 15 to 20 knots diminishing to 5 to
15 knots. a chance of showers during the day. waves 2 to 4 feet
subsiding to 1 to 3 feet. 
.monday...northwest winds 10 knots or less becoming west. waves
1 foot or less. 

$$

fzus61 kcle 121457
glfle 
expires:202611122115;;696906

open lake forecast for lake erie
national weather service cleveland oh
957 am est thu nov 12 2026

for waters beyond five nautical miles of shore on lake erie

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 29.60 inches tracking across the ohio valley early 
this morning will exit to off the mid atlantic coast today as a
sharp trough averaging 29.80 inches lingers across the lake
through this afternoon. weaker troughing averaging 30.00 inches
then persists for friday and the weekend. high pressure 30.40
inches builds over the lake early next week.


lez061-168-169-122115-
ripley to buffalo ny extending from 5nm off shoreline to us-
canadian border-geneva-on-the-
lake to conneaut oh beyond 5 nm off shoreline to us-
canadian border-
conneaut oh to ripley ny beyond 5 nm off shoreline to us-
canadian border-
957 am est thu nov 12 2026

.rest of today...northeast winds to 30 knots. showers likely late
this morning, then a chance of showers early this afternoon.
showers likely late. waves 5 to 9 feet. waves occasionally around
11 feet. 
.tonight...north winds 15 to 25 knots. rain showers likely early,
then a slight chance of rain showers from late evening on. waves
5 to 8 feet subsiding to 3 to 6 feet. waves occasionally around
10 feet. 
.friday...north winds 15 to 20 knots diminishing to 10 to
15 knots. a chance of rain showers in the morning. waves 3 to
5 feet subsiding to 2 to 4 feet. 
.friday night...north winds 10 to 15 knots becoming northwest.
waves 1 to 3 feet. 
.saturday...northwest winds 15 to 20 knots diminishing to 10 to
15 knots. a chance of rain showers. waves 2 to 4 feet building to
3 to 5 feet, then subsiding to 2 to 4 feet. 
.sunday...northwest winds 10 to 15 knots. a chance of showers
during the day. waves 1 to 3 feet. 
.monday...northwest winds 10 knots or less becoming west. waves
1 foot or less. 

$$

fzus61 kcle 121457
glfle 
expires:202611122115;;696904

open lake forecast for lake erie
national weather service cleveland oh
957 am est thu nov 12 2026

for waters beyond five nautical miles of shore on lake erie

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 29.60 inches tracking across the ohio valley early 
this morning will exit to off the mid atlantic coast today as a
sharp trough averaging 29.80 inches lingers across the lake
through this afternoon. weaker troughing averaging 30.00 inches
then persists for friday and the weekend. high pressure 30.40
inches builds over the lake early next week.


lez162-163-122115-
detroit river lt. to maumee bay oh to reno beach oh beyond 5nm
offshoreline to us-canadian border-
reno beach to the islands oh beyond 5nm off shoreline to us-
canadian border-
957 am est thu nov 12 2026

.rest of today...north winds 15 to 25 knots. a slight chance of
showers late this morning, then showers likely this afternoon. a
chance of waterspouts this afternoon. waves 2 to 4 feet building
to 4 to 7 feet. waves occasionally around 9 feet. 
.tonight...north winds 15 to 25 knots. a chance of waterspouts
early. a chance of rain showers early, then a slight chance of
rain showers from late evening on. waves 4 to 7 feet subsiding to
2 to 4 feet. waves occasionally around 9 feet. 
.friday...north winds 15 to 20 knots diminishing to 10 to
15 knots. a chance of rain showers. waves 1 to 3 feet. 
.friday night...north winds 15 to 20 knots becoming northwest. a
chance of rain showers in the evening. waves 2 to 4 feet
subsiding to 1 to 3 feet. 
.saturday...northwest winds 10 to 15 knots. waves 1 to 3 feet. 
.sunday...northwest winds 5 to 15 knots. waves 2 feet or less. 
.monday...northwest winds 10 knots or less becoming southwest.
waves 1 foot or less. 

$$

fzus63 kdtx 122034
glfsc 
expires:202611130445;;712365

lake st clair forecast
national weather service detroit/pontiac mi
334 pm est thu nov 12 2026

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...northeast to north flow is now in place across the
great lakes in the wake of a low pressure system, which will
maintain breezy conditions through this evening. north flow holds
to end the week, along with the development of lake effect rain
bands which will set up across central and southern lake huron.


lcz460-130445-
lake st clair-
334 pm est thu nov 12 2026

...small craft advisory in effect through late tonight...

.tonight...northeast winds 20 to 25 knots becoming north 15 to 20
knots after midnight. mostly cloudy. scattered showers in the late
evening and overnight. waves 2 to 4 feet subsiding to 1 to 3 feet
after midnight.
.friday...north winds 10 to 15 knots increasing to 15 to 20 knots
late in the afternoon. mostly cloudy. numerous snow showers in the
morning. numerous showers. waves 2 feet or less.
.friday night...northwest winds 15 to 20 knots. partly cloudy. waves
1 to 3 feet.
.saturday...northwest winds 15 to 20 knots. partly sunny. waves 1 to
3 feet.
.saturday night...northwest winds 15 to 20 knots diminishing to 10
to 15 knots in the late evening and overnight. partly cloudy. waves
1 to 3 feet.
.sunday...northwest winds 10 to 15 knots diminishing to 5 to 10
knots in the afternoon and evening. partly cloudy. waves 2 feet or
less.
.monday...southwest winds 5 to 10 knots. mostly clear. waves 2 feet
or less.
.tuesday...southwest winds 5 to 10 knots. clear. waves 2 feet or
less.

$$

fzus63 kdtx 122033
glflh 
expires:202611130445;;712293

open lake forecast for lake huron
national weather service detroit/pontiac mi
333 pm est thu nov 12 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...northeast to north flow is now in place across the
great lakes in the wake of a low pressure system, which will
maintain breezy conditions through this evening. north flow holds
to end the week, along with the development of lake effect rain
bands which will set up across central and southern lake huron.


lhz463-464-130445-
lake huron from harbor beach to port sanilac beyond 5nm off shore-
lake huron from port sanilac to port huron beyond 5nm off shore-
333 pm est thu nov 12 2026

.tonight...north winds 20 to 25 knots with gusts to around
30 knots decreasing to 15 to 20 knots after midnight. scattered
showers. waves 5 to 7 feet. waves occasionally around 10 feet. 
.friday...north winds 15 to 20 knots. showers in the morning...
then scattered showers in the afternoon. waves 4 to 6 feet. waves
occasionally around 8 feet. 
.friday night...north winds 20 to 25 knots becoming northwest
15 to 20 knots in the late evening and overnight. showers. waves
5 to 7 feet. waves occasionally around 10 feet. 
.saturday...northwest winds 20 to 25 knots. showers. waves 6 to
9 feet. waves occasionally around 12 feet. 
.saturday night...northwest winds 20 to 25 knots decreasing to
15 to 20 knots in the late evening and overnight. showers in the
evening...then a chance of rain after midnight. waves 5 to
7 feet. waves occasionally around 10 feet. 
.sunday...northwest winds 15 to 20 knots decreasing to 5 to
10 knots. a chance of rain. waves 3 to 5 feet subsiding to 1 to
3 feet late in the evening. 
.monday...west winds 5 to 10 knots becoming southwest 10 to
15 knots. waves 2 feet or less. 
.tuesday...southwest winds 10 to 15 knots. waves 2 feet or less. 


$$

fzus63 kdtx 122033
glflh 
expires:202611130445;;712291

open lake forecast for lake huron
national weather service detroit/pontiac mi
333 pm est thu nov 12 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...northeast to north flow is now in place across the
great lakes in the wake of a low pressure system, which will
maintain breezy conditions through this evening. north flow holds
to end the week, along with the development of lake effect rain
bands which will set up across central and southern lake huron.


lhz361-362-130445-
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-
333 pm est thu nov 12 2026

.tonight...north winds 15 to 20 knots. waves 3 to 5 feet. 
.friday...north winds 15 to 20 knots. waves 3 to 5 feet. 
.friday night...north winds 15 to 20 knots. scattered showers in
the evening. waves 4 to 6 feet. waves occasionally around 8 feet.
.saturday...north winds 15 to 20 knots. waves 4 to 6 feet. 
.saturday night...north winds 15 to 20 knots decreasing to 10 to
15 knots in the late evening and overnight. waves 3 to 5 feet.
waves occasionally around 8 feet. 
.sunday...northwest winds 10 to 15 knots decreasing to 5 to
10 knots late in the afternoon. waves 1 to 3 feet. 
.monday...west winds 5 to 10 knots backing to the southwest until
early evening...then increasing to 10 to 15 knots by midnight.
waves 2 feet or less. 
.tuesday...southwest winds 10 to 15 knots. waves 1 to 3 feet. 


$$

fzus63 kdtx 122033
glflh 
expires:202611130445;;712292

open lake forecast for lake huron
national weather service detroit/pontiac mi
333 pm est thu nov 12 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...northeast to north flow is now in place across the
great lakes in the wake of a low pressure system, which will
maintain breezy conditions through this evening. north flow holds
to end the week, along with the development of lake effect rain
bands which will set up across central and southern lake huron.


lhz363-462-130445-
lake huron from sturgeon point to alabaster mi beyond 5nm off
shore-
lake huron from port austin to harbor beach beyond 5nm off shore-
333 pm est thu nov 12 2026

.tonight...north winds 20 to 25 knots decreasing to 15 to
20 knots in the late evening and overnight. scattered showers in
the evening...then numerous showers after midnight. waves 5 to
7 feet. waves occasionally around 10 feet. 
.friday...north winds 15 to 20 knots. scattered showers. waves
5 to 7 feet. waves occasionally around 10 feet. 
.friday night...north winds 15 to 20 knots increasing to 20 to
25 knots after midnight. scattered showers. waves 6 to 9 feet.
waves occasionally around 12 feet. 
.saturday...north winds 20 to 25 knots. scattered showers. waves
6 to 9 feet. waves occasionally around 12 feet. 
.saturday night...northwest winds 15 to 20 knots. scattered
showers. waves 5 to 7 feet. waves occasionally around 10 feet. 
.sunday...northwest winds 10 to 15 knots decreasing to 5 to
10 knots late in the afternoon. waves 3 to 5 feet subsiding to
1 to 3 feet late in the afternoon. 
.monday...west winds 5 to 10 knots becoming southwest 10 to
15 knots . waves 1 to 3 feet. 
.tuesday...southwest winds 10 to 15 knots. waves 2 to 4 feet. 


$$

fzus63 kmkx 122001
glflm 
expires:202611130415;;710966

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
201 pm cst thu nov 12 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...

29.5 inch low pressure will advance into the northeastern united 
states this evening. progression of the low will support 
continued increases in northerly winds, with gusts exceeding gale 
force through this evening as 30.4 inch high pressure builds into 
the canadian great plains. a gale warning remains in effect until 
9 pm cst this evening over the southern two-thirds of the waters. 
northerly winds will remain steadily breezy---though below gale 
thresholds---through the day on friday as the aforementioned high
nudges east toward the hudson bay. winds will taper sunday into 
monday as 30.2 inch high pressure builds directly over the open 
waters.

persistent northerly winds will allow for continued lake effect 
precipitation through friday. expecting precip to gradually drift 
eastward tonight into friday. low level temperatures will be 
supportive for mainly rain, though some snow could mix in over the 
northern half of the lake. a few thunderstorms are possible, 
particularly over the southern half of the waters. can't rule out a 
waterspout in any deeper thunderstorms that manage to develop. will 
be monitoring for any possible special marine warnings or marine 
weather statements. anticipating that lake effect precip will 
dissipate by friday evening.


lmz366-565-567-868-130415-
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 pentwater to manistee mi 5 nm offshore to mid
lake-
201 pm cst thu nov 12 2026

sturgeon bay wi to point betsie mi south to sheboygan wi to
pentwater mi...

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

.tonight...north winds to 30 kt. slight chance of waterspouts.
rain this evening, then rain likely overnight. waves 8 to 11 ft
occasionally to 14 ft subsiding to 7 to 10 ft occasionally to
13 ft. 
.friday...north winds to 30 kt. slight chance of waterspouts.
rain in the morning, then rain likely in the afternoon. waves
7 to 10 ft occasionally to 13 ft. 
.friday night...north winds to 30 kt diminishing to 15 to 25 kt.
chance of rain. waves 6 to 9 ft occasionally to 12 ft. 
.saturday...north winds 15 to 25 kt diminishing to 10 to 20 kt.
rain likely in the morning, then chance of rain in the afternoon.
waves 5 to 8 ft occasionally to 10 ft subsiding to 4 to 7 ft
occasionally to 9 ft. 
.saturday night...north winds 10 to 20 kt diminishing to 10 to
15 kt. waves 3 to 5 ft subsiding to 1 to 3 ft. 
.sunday...north winds 10 to 15 kt diminishing to 5 to 10 kt in
the afternoon. waves 1 to 2 ft. 
.sunday night...west winds less than 10 kt increasing to 5 to
10 kt. waves 1 ft or less. 
.monday...southwest winds 10 to 15 kt increasing to 10 to 20 kt.
waves 1 to 3 ft. 
.tuesday...southwest winds 10 to 20 kt. waves 2 to 4 ft.  

$$

fzus63 kmkx 122001
glflm 
expires:202611130415;;710967

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
201 pm cst thu nov 12 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...

29.5 inch low pressure will advance into the northeastern united 
states this evening. progression of the low will support 
continued increases in northerly winds, with gusts exceeding gale 
force through this evening as 30.4 inch high pressure builds into 
the canadian great plains. a gale warning remains in effect until 
9 pm cst this evening over the southern two-thirds of the waters. 
northerly winds will remain steadily breezy---though below gale 
thresholds---through the day on friday as the aforementioned high
nudges east toward the hudson bay. winds will taper sunday into 
monday as 30.2 inch high pressure builds directly over the open 
waters.

persistent northerly winds will allow for continued lake effect 
precipitation through friday. expecting precip to gradually drift 
eastward tonight into friday. low level temperatures will be 
supportive for mainly rain, though some snow could mix in over the 
northern half of the lake. a few thunderstorms are possible, 
particularly over the southern half of the waters. can't rule out a 
waterspout in any deeper thunderstorms that manage to develop. will 
be monitoring for any possible special marine warnings or marine 
weather statements. anticipating that lake effect precip will 
dissipate by friday evening.


lmz080-669-671-673-675-777-779-870-872-874-876-878-130415-
lake michigan from michigan city in to st. joseph mi 5 nm
offshore to mid lake-
lake michigan from sheboygan to port washington wi 5 nm offshore
to mid lake-
lake michigan from port washington to north point light wi 5 nm
offshore to mid lake-
lake michigan from north point light to wind point wi 5 nm
offshore to mid lake-
lake michigan from wind point wi to winthrop harbor il 5 nm
offshore to mid lake-
lake michigan from winthrop harbor to wilmette harbor il 5 nm
offshore to mid lake-
lake michigan from wilmette harbor il to michigan city in 5 nm
offshore to mid lake-
lake michigan from whitehall to pentwater mi 5 nm offshore to mid
lake-
lake michigan from grand haven to whitehall mi 5 nm offshore to
mid lake-
lake michigan from holland to grand haven mi 5 nm offshore to mid
lake-
lake michigan from south haven to holland mi 5 nm offshore to mid
lake-
lake michigan from st. joseph to south haven mi 5 nm offshore to
mid lake-
201 pm cst thu nov 12 2026

sheboygan wi to pentwater mi south...

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

.tonight...north gales to 35 kt diminishing to 30 kt. slight
chance of waterspouts. rain this evening, then chance of rain
overnight. waves 14 to 18 ft occasionally to 23 ft subsiding to
8 to 12 ft occasionally to 16 ft. 
.friday...north winds to 30 kt. chance of waterspouts. chance of
rain. waves 8 to 12 ft occasionally to 16 ft. 
.friday night...north winds to 30 kt diminishing to 15 to 25 kt.
chance of rain. waves 8 to 12 ft occasionally to 16 ft subsiding
to 7 to 10 ft occasionally to 13 ft. 
.saturday...north winds to 30 kt diminishing to 10 to 20 kt in
the afternoon. rain likely in the morning, then chance of rain in
the afternoon. waves 6 to 9 ft occasionally to 12 ft. 
.saturday night...north winds 10 to 20 kt diminishing to 10 to
15 kt. chance of rain in the evening. waves 4 to 7 ft
occasionally to 9 ft subsiding to 3 to 5 ft. 
.sunday...north winds 10 to 15 kt diminishing to 5 to 10 kt.
waves 1 to 3 ft. 
.sunday night...northwest winds 5 to 10 kt becoming west. waves
1 to 2 ft. 
.monday...southwest winds 10 to 15 kt. waves 1 to 2 ft. 
.tuesday...southwest winds 10 to 20 kt. waves 2 to 4 ft.  

$$

fzus63 kmkx 122001
glflm 
expires:202611130415;;710965

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
201 pm cst thu nov 12 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...

29.5 inch low pressure will advance into the northeastern united 
states this evening. progression of the low will support 
continued increases in northerly winds, with gusts exceeding gale 
force through this evening as 30.4 inch high pressure builds into 
the canadian great plains. a gale warning remains in effect until 
9 pm cst this evening over the southern two-thirds of the waters. 
northerly winds will remain steadily breezy---though below gale 
thresholds---through the day on friday as the aforementioned high
nudges east toward the hudson bay. winds will taper sunday into 
monday as 30.2 inch high pressure builds directly over the open 
waters.

persistent northerly winds will allow for continued lake effect 
precipitation through friday. expecting precip to gradually drift 
eastward tonight into friday. low level temperatures will be 
supportive for mainly rain, though some snow could mix in over the 
northern half of the lake. a few thunderstorms are possible, 
particularly over the southern half of the waters. can't rule out a 
waterspout in any deeper thunderstorms that manage to develop. will 
be monitoring for any possible special marine warnings or marine 
weather statements. anticipating that lake effect precip will 
dissipate by friday evening.


lmz261-362-364-563-130415-
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-
201 pm cst thu nov 12 2026

sturgeon bay wi to point betsie mi north...

.tonight...north winds 15 to 25 kt. slight chance of waterspouts
this evening, then chance of waterspouts overnight. rain likely
with a chance of snow this evening, then chance of rain and snow
overnight. waves 4 to 7 ft occasionally to 9 ft. 
.friday...north winds 15 to 25 kt. slight chance of waterspouts.
chance of rain and slight chance of snow in the morning, then
chance of rain in the afternoon. waves 4 to 7 ft occasionally to
9 ft. 
.friday night...north winds 15 to 25 kt. chance of rain. waves
4 to 7 ft occasionally to 9 ft. 
.saturday...north winds 15 to 25 kt diminishing to 10 to 20 kt.
chance of rain. waves 4 to 6 ft occasionally to 8 ft subsiding to
3 to 5 ft. 
.saturday night...north winds 10 to 20 kt diminishing to 5 to
10 kt overnight. waves 2 to 4 ft subsiding to 1 to 3 ft. 
.sunday...north winds 10 to 15 kt becoming northwest. waves 1 to
2 ft. 
.sunday night...west winds 5 to 10 kt. waves 1 ft or less. 
.monday...southwest winds 10 to 20 kt increasing to 15 to 25 kt.
waves 1 to 3 ft building to 2 to 4 ft. 
.tuesday...southwest winds 15 to 25 kt. waves 3 to 5 ft.  

$$

fzus63 kmqt 121501
glfls 
expires:202611122100;;697236

open lake forecast for lake superior
national weather service marquette mi
1001 am est thu nov 12 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 29.5 inch low over delaware this morning deepens to 29.4 inches as 
it moves offshore near cape cod friday morning and then to 
newfoundland by saturday morning. meanwhile, 30.4 inch high pressure 
over northern manitoba gradually weakens to 30.3 inches over 
northwest ontario by friday and expands southward to the ozarks by 
saturday morning. high pressure slowly shifts eastward to the upper 
great lakes at 30.3 inches by saturday and encompasses much of the 
eastern conus while strengthening to 30.5 inches by monday. 





lsz162-122100-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1001 am est thu nov 12 2026 /901 am cst thu nov 12 2026/

.rest of today...north winds 20 to 30 knots diminishing to 10 to
20 knots by late morning, then increasing to 15 to 25 knots by
mid afternoon. waves 3 to 6 feet occasionally to 8 feet subsiding
to 2 to 4 feet. 
.tonight...north winds 15 to 25 knots. a slight chance of snow
showers in the evening. waves building to 3 to 5 feet
occasionally to 7 feet. 
.friday...north winds 15 to 25 knots diminishing to 5 to
15 knots. waves subsiding to 1 to 3 feet. 
.friday night...north winds 5 to 15 knots increasing to 10 to
20 knots after midnight. waves subsiding to calm to 2 feet. 
.saturday...north winds 5 to 15 knots veering northeast in the
afternoon. waves calm to 2 feet. 
.saturday night...east winds 5 to 15 knots veering southwest
after midnight. waves calm to 2 feet. 
.sunday...southwest winds 5 to 15 knots increasing to 10 to
20 knots. waves building to 1 to 3 feet. 
.monday...southwest winds 15 to 25 knots. waves building to 3 to
6 feet occasionally to 8 feet. 

$$

fzus63 kmqt 121501
glfls 
expires:202611122100;;697238

open lake forecast for lake superior
national weather service marquette mi
1001 am est thu nov 12 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 29.5 inch low over delaware this morning deepens to 29.4 inches as 
it moves offshore near cape cod friday morning and then to 
newfoundland by saturday morning. meanwhile, 30.4 inch high pressure 
over northern manitoba gradually weakens to 30.3 inches over 
northwest ontario by friday and expands southward to the ozarks by 
saturday morning. high pressure slowly shifts eastward to the upper 
great lakes at 30.3 inches by saturday and encompasses much of the 
eastern conus while strengthening to 30.5 inches by monday. 





lsz264-122100-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
1001 am est thu nov 12 2026

.rest of today...north winds 15 to 25 knots. a chance of snow
showers late in the morning, then snow showers likely in the
afternoon. waves 4 to 7 feet occasionally to 9 feet subsiding to
3 to 6 feet occasionally to 8 feet, then building to 4 to 7 feet
occasionally to 9 feet. 
.tonight...north winds 15 to 25 knots. a chance of snow showers.
waves subsiding to 3 to 6 feet occasionally to 8 feet. 
.friday...north winds 15 to 25 knots. a slight chance of rain and
snow showers. waves 3 to 6 feet occasionally to 8 feet. 
.friday night...north winds 15 to 25 knots diminishing to 10 to
20 knots after midnight. waves subsiding to 3 to 5 feet
occasionally to 7 feet. 
.saturday...north winds 10 to 20 knots diminishing to 5 to
15 knots in the afternoon. waves subsiding to calm to 2 feet. 
.saturday night...north winds 5 to 15 knots becoming northwest
less than 10 knots after midnight. waves calm to 2 feet. 
.sunday...west winds 5 to 15 knots backing southwest. waves
building to 1 to 3 feet. 
.monday...southwest winds 15 to 25 knots. waves building to 4 to
7 feet occasionally to 9 feet. 

$$

fzus63 kmqt 121501
glfls 
expires:202611122100;;697240

open lake forecast for lake superior
national weather service marquette mi
1001 am est thu nov 12 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 29.5 inch low over delaware this morning deepens to 29.4 inches as 
it moves offshore near cape cod friday morning and then to 
newfoundland by saturday morning. meanwhile, 30.4 inch high pressure 
over northern manitoba gradually weakens to 30.3 inches over 
northwest ontario by friday and expands southward to the ozarks by 
saturday morning. high pressure slowly shifts eastward to the upper 
great lakes at 30.3 inches by saturday and encompasses much of the 
eastern conus while strengthening to 30.5 inches by monday. 





lsz266-122100-
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-
1001 am est thu nov 12 2026

.rest of today...north winds 20 to 30 knots increasing to
30 knots with a few gale force gusts to 35 knots possible by mid
afternoon. a chance of snow showers, possibly mixed with rain and
sleet late in the morning, then snow showers likely with pockets
of rain showers in the afternoon. waves 4 to 8 feet occasionally
to 10 feet, then building to 5 to 8 feet occasionally to 10 feet.
.tonight...north winds to 30 knots with a few gale force gusts to
35 knots possible diminishing to 20 to 30 knots late. a chance of
snow showers, possibly mixed with rain. waves building to 5 to
9 feet occasionally to 11 feet. 
.friday...north winds 20 to 30 knots increasing to 30 knots with
a few gale force gusts to 35 knots possible by mid afternoon. a
chance of rain and snow showers. waves building to 6 to 9 feet
occasionally to 11 feet. 
.friday night...north winds 20 to 30 knots. a slight chance of
rain showers in the evening. waves subsiding to 5 to 8 feet
occasionally to 10 feet. 
.saturday...north winds 15 to 25 knots. a slight chance of rain
showers. waves subsiding to 2 to 4 feet. 
.saturday night...north winds 10 to 20 knots diminishing to 5 to
15 knots after midnight. waves subsiding to calm to 2 feet. 
.sunday...northwest winds 5 to 15 knots backing southwest. waves
calm to 2 feet. 
.monday...southwest winds 10 to 20 knots increasing to 15 to
25 knots. waves building to 3 to 5 feet occasionally to 7 feet. 

$$

fzus63 kmqt 121501
glfls 
expires:202611122100;;697239

open lake forecast for lake superior
national weather service marquette mi
1001 am est thu nov 12 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 29.5 inch low over delaware this morning deepens to 29.4 inches as 
it moves offshore near cape cod friday morning and then to 
newfoundland by saturday morning. meanwhile, 30.4 inch high pressure 
over northern manitoba gradually weakens to 30.3 inches over 
northwest ontario by friday and expands southward to the ozarks by 
saturday morning. high pressure slowly shifts eastward to the upper 
great lakes at 30.3 inches by saturday and encompasses much of the 
eastern conus while strengthening to 30.5 inches by monday. 





lsz265-122100-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
1001 am est thu nov 12 2026

.rest of today...north winds 20 to 30 knots. sleet likely late in
the morning. rain and snow showers. waves 4 to 8 feet
occasionally to 10 feet, then building to 5 to 8 feet
occasionally to 10 feet. 
.tonight...north winds to 30 knots with a few gale force gusts to
35 knots possible diminishing to 20 to 30 knots by midnight. snow
showers likely in the evening. a slight chance of rain showers. a
chance of snow showers after midnight. waves building to 5 to
9 feet occasionally to 11 feet. 
.friday...north winds 20 to 30 knots. a chance of rain and snow
showers. waves 5 to 8 feet occasionally to 10 feet. 
.friday night...north winds 20 to 30 knots diminishing to 15 to
25 knots after midnight. a slight chance of rain showers in the
evening. waves subsiding to 4 to 7 feet occasionally to 9 feet. 
.saturday...north winds 15 to 25 knots diminishing to 10 to
20 knots in the afternoon. a slight chance of rain showers in the
afternoon. waves subsiding to 2 to 4 feet. 
.saturday night...north winds 10 to 20 knots diminishing to 5 to
15 knots after midnight. waves subsiding to calm to 2 feet. 
.sunday...northwest winds 5 to 15 knots backing southwest. waves
calm to 2 feet. 
.monday...southwest winds 10 to 20 knots increasing to 15 to
25 knots. waves building to 1 to 3 feet. 

$$

fzus63 kmqt 121501
glfls 
expires:202611122100;;697241

open lake forecast for lake superior
national weather service marquette mi
1001 am est thu nov 12 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 29.5 inch low over delaware this morning deepens to 29.4 inches as 
it moves offshore near cape cod friday morning and then to 
newfoundland by saturday morning. meanwhile, 30.4 inch high pressure 
over northern manitoba gradually weakens to 30.3 inches over 
northwest ontario by friday and expands southward to the ozarks by 
saturday morning. high pressure slowly shifts eastward to the upper 
great lakes at 30.3 inches by saturday and encompasses much of the 
eastern conus while strengthening to 30.5 inches by monday. 





lsz267-122100-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
1001 am est thu nov 12 2026

.rest of today...north winds 20 to 30 knots. a chance of snow
showers, possibly mixed with rain. sleet likely in the afternoon.
waves 4 to 7 feet occasionally to 9 feet subsiding to 3 to 6 feet
occasionally to 8 feet. 
.tonight...north winds 20 to 30 knots. a chance of snow showers,
possibly mixed with rain. waves building to 4 to 7 feet
occasionally to 9 feet. 
.friday...north winds 20 to 30 knots. a chance of rain and snow
showers. waves subsiding to 3 to 6 feet occasionally to 8 feet,
then building to 4 to 7 feet occasionally to 9 feet. 
.friday night...north winds 20 to 30 knots. a slight chance of
rain showers in the evening. waves 4 to 7 feet occasionally to
9 feet. 
.saturday...north winds 15 to 25 knots. waves subsiding to 2 to
4 feet. 
.saturday night...north winds 10 to 20 knots. waves subsiding to
calm to 2 feet. 
.sunday...north winds 5 to 15 knots backing southwest. waves calm
to 2 feet. 
.monday...southwest winds 10 to 20 knots increasing to 15 to
25 knots. waves building to 2 to 4 feet. 

$$

fzus63 kmqt 121501
glfls 
expires:202611122100;;697237

open lake forecast for lake superior
national weather service marquette mi
1001 am est thu nov 12 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 29.5 inch low over delaware this morning deepens to 29.4 inches as 
it moves offshore near cape cod friday morning and then to 
newfoundland by saturday morning. meanwhile, 30.4 inch high pressure 
over northern manitoba gradually weakens to 30.3 inches over 
northwest ontario by friday and expands southward to the ozarks by 
saturday morning. high pressure slowly shifts eastward to the upper 
great lakes at 30.3 inches by saturday and encompasses much of the 
eastern conus while strengthening to 30.5 inches by monday. 





lsz263-122100-
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-
1001 am est thu nov 12 2026

.rest of today...north winds 15 to 25 knots. a chance of rain
showers late in the morning. a chance of snow showers. waves 4 to
7 feet occasionally to 9 feet subsiding to 3 to 6 feet
occasionally to 8 feet. 
.tonight...north winds 15 to 25 knots increasing to 20 to
30 knots by midnight, then diminishing to 15 to 25 knots late. a
chance of snow showers. waves building to 4 to 7 feet
occasionally to 9 feet. 
.friday...north winds 15 to 25 knots diminishing to 10 to
20 knots. a slight chance of snow showers. a slight chance of
rain showers in the afternoon. waves subsiding to 3 to 5 feet
occasionally to 7 feet. 
.friday night...north winds 10 to 20 knots. waves subsiding to
2 to 4 feet. 
.saturday...north winds 10 to 20 knots diminishing to 5 to
15 knots in the afternoon. waves subsiding to calm to 2 feet. 
.saturday night...north winds less than 10 knots backing
northwest after midnight. waves calm to 2 feet. 
.sunday...southwest winds 5 to 15 knots increasing to 10 to
20 knots. waves building to 2 to 4 feet. 
.monday...southwest winds 20 to 30 knots. waves building to 4 to
7 feet occasionally to 9 feet. 

$$