fzus61 kbuf 181402
glflo 
expires:202606182100;;958959

open lake forecast for lake ontario
national weather service buffalo ny
1002 am edt thu jun 18 2026

for waters beyond five nautical miles of shore on lake ontario

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...an unseasonably strong low over southern ontario this 
morning will track to southern quebec this afternoon, deepening to 
29.1 inches. the trailing cold front will move across the lake 
today. this low will move slowly east to the canadian maritimes 
friday while filling to 29.4 inches, eventually moving east of 
newfoundland by saturday night. a weak ridge of high pressure 
averaging 29.9 inches will then build into the great lakes saturday 
night through sunday. a 29.7 inch low is then forecast to move over 
or just south of the lower great lakes monday before moving off the 
new england coast by tuesday.


loz062-182100-
lake ontario open waters from the niagara river to hamlin beach-
1002 am edt thu jun 18 2026

.rest of today...southwest winds 20 to 25 knots becoming west. a
chance of showers. waves 5 to 8 feet. waves occasionally around
10 feet. 
.tonight...west winds 15 to 25 knots. waves 5 to 8 feet subsiding
to 3 to 6 feet. waves occasionally around 10 feet. 
.friday...west winds 15 to 25 knots. waves 3 to 6 feet. 
.friday night...west winds 15 to 20 knots. waves 3 to 6 feet
subsiding to 2 to 4 feet. 
.saturday...west winds 15 to 20 knots diminishing to 5 to
15 knots. waves 2 to 4 feet subsiding to 1 to 3 feet. 
.sunday...west winds 10 knots or less becoming east. a chance of
showers sunday night. waves 1 foot or less. 
.monday...northeast winds 5 to 15 knots becoming northwest. a
chance of showers during the day. waves 2 feet or less. 

$$

fzus61 kbuf 181402
glflo 
expires:202606182100;;958960

open lake forecast for lake ontario
national weather service buffalo ny
1002 am edt thu jun 18 2026

for waters beyond five nautical miles of shore on lake ontario

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...an unseasonably strong low over southern ontario this 
morning will track to southern quebec this afternoon, deepening to 
29.1 inches. the trailing cold front will move across the lake 
today. this low will move slowly east to the canadian maritimes 
friday while filling to 29.4 inches, eventually moving east of 
newfoundland by saturday night. a weak ridge of high pressure 
averaging 29.9 inches will then build into the great lakes saturday 
night through sunday. a 29.7 inch low is then forecast to move over 
or just south of the lower great lakes monday before moving off the 
new england coast by tuesday.


loz063>065-182100-
lake ontario open waters from hamlin beach to the saint lawrence
river-
1002 am edt thu jun 18 2026

.rest of today...southwest winds to 30 knots becoming west.
showers likely with a chance of thunderstorms late this morning,
then a chance of showers this afternoon. waves 5 to 9 feet. waves
occasionally around 11 feet. 
.tonight...west winds to 30 knots. waves 6 to 9 feet. waves
occasionally around 11 feet. 
.friday...west winds 20 to 25 knots. waves 6 to 9 feet. waves
occasionally around 11 feet. 
.friday night...west winds 15 to 25 knots. waves 5 to 9 feet
subsiding to 4 to 7 feet. waves occasionally around 11 feet. 
.saturday...west winds 15 to 20 knots diminishing to 5 to
10 knots. waves 4 to 7 feet subsiding to 1 to 3 feet. waves
occasionally around 9 feet. 
.sunday...west winds 10 knots or less becoming south. a chance of
showers sunday night. waves 2 feet or less. 
.monday...east winds 5 to 10 knots becoming northwest. a chance
of showers. waves 1 foot or less. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 181416
glfle 
expires:202606182030;;959863

open lake forecast for lake erie
national weather service cleveland oh
1016 am edt thu jun 18 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...
a cold front will sweep eastward across central and eastern
portions of lake erie through about midday today. behind the
front, a trough averaging 29.60 inches lingers over the lake 
through friday before a high pressure ridge averaging 30.00 inches
overspreads lake erie from the west on saturday through sunday. 
during sunday night through monday, a trough averaging 29.80 
inches should impact lake erie as the parent low wobbles east- 
northeastward from near the central great plains to near central 
pennsylvania and deepens to 29.60 inches. behind the low, a ridge 
averaging 30.00 inches should build from the north-central united 
states and vicinity monday night through this tuesday. 


lez165>168-182030-
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-geneva-on-
the-lake to conneaut oh beyond 5 nm off shoreline to us-
canadian border-
1016 am edt thu jun 18 2026

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

.this afternoon...west gales to 35 knots. a slight chance of
showers late. waves 9 to 12 feet. waves occasionally around
15 feet. 
.tonight...west winds 15 to 25 knots diminishing to 10 to
15 knots. waves 6 to 9 feet subsiding to 2 to 4 feet. waves
occasionally around 11 feet. 
.friday...west winds 10 to 15 knots. waves 2 to 4 feet. 
.friday night...west winds 10 to 15 knots becoming northwest.
waves 1 to 3 feet. 
.saturday...west winds 5 to 10 knots becoming northwest. waves
1 to 3 feet. 
.sunday...north winds less than 10 knots becoming northeast and
increasing to 15 to 20 knots. a chance of showers during the day,
then showers likely sunday night. waves 1 to 3 feet. 
.monday...northeast winds 15 to 20 knots becoming north 10 to
15 knots. a chance of showers during the day. waves 3 to 5 feet
subsiding to 1 to 3 feet. 

$$

fzus61 kcle 181416
glfle 
expires:202606182030;;959862

open lake forecast for lake erie
national weather service cleveland oh
1016 am edt thu jun 18 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...
a cold front will sweep eastward across central and eastern
portions of lake erie through about midday today. behind the
front, a trough averaging 29.60 inches lingers over the lake 
through friday before a high pressure ridge averaging 30.00 inches
overspreads lake erie from the west on saturday through sunday. 
during sunday night through monday, a trough averaging 29.80 
inches should impact lake erie as the parent low wobbles east- 
northeastward from near the central great plains to near central 
pennsylvania and deepens to 29.60 inches. behind the low, a ridge 
averaging 30.00 inches should build from the north-central united 
states and vicinity monday night through this tuesday. 


lez162>164-182030-
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-
the islands to vermilion oh beyond 5 nm off shoreline to us-
canadian border-
1016 am edt thu jun 18 2026

...low water advisory in effect until 4 pm edt...

.this afternoon...west winds to 30 knots. waves 5 to 8 feet. waves
occasionally around 10 feet. 
.tonight...west winds 15 to 20 knots diminishing to 10 to
15 knots. waves 3 to 5 feet subsiding to 1 to 3 feet. 
.friday...west winds 10 to 15 knots increasing to 15 to 20 knots.
waves 1 to 3 feet. 
.friday night...west winds 10 to 15 knots. waves 1 to 3 feet. 
.saturday...west winds 5 to 10 knots becoming northwest. waves
2 feet or less. 
.sunday...north winds 10 knots or less becoming northeast and
increasing to 15 to 20 knots. a chance of showers during the day,
then showers likely sunday night. waves 2 feet or less building
to 2 to 4 feet. 
.monday...northeast winds 15 to 20 knots becoming north 10 to
15 knots. a chance of showers during the day. waves 3 to 5 feet
subsiding to 1 to 3 feet. 

$$

fzus61 kcle 181416
glfle 
expires:202606182030;;959864

open lake forecast for lake erie
national weather service cleveland oh
1016 am edt thu jun 18 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...
a cold front will sweep eastward across central and eastern
portions of lake erie through about midday today. behind the
front, a trough averaging 29.60 inches lingers over the lake 
through friday before a high pressure ridge averaging 30.00 inches
overspreads lake erie from the west on saturday through sunday. 
during sunday night through monday, a trough averaging 29.80 
inches should impact lake erie as the parent low wobbles east- 
northeastward from near the central great plains to near central 
pennsylvania and deepens to 29.60 inches. behind the low, a ridge 
averaging 30.00 inches should build from the north-central united 
states and vicinity monday night through this tuesday. 


lez061-169-182030-
ripley to buffalo ny extending from 5nm off shoreline to us-
canadian border-
conneaut oh to ripley ny beyond 5 nm off shoreline to us-
canadian border-
1016 am edt thu jun 18 2026

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

.this afternoon...southwest winds to 30 knots becoming west. a
slight chance of showers and thunderstorms. waves 9 to 13 feet.
waves occasionally around 16 feet. 
.tonight...west winds 15 to 25 knots diminishing to 10 to
15 knots. a slight chance of showers and thunderstorms early,
then a slight chance of showers late in the evening. waves 7 to
10 feet subsiding to 3 to 5 feet. waves occasionally around
13 feet. 
.friday...west winds 10 to 15 knots increasing to 15 to 20 knots.
waves 2 to 4 feet. 
.friday night...west winds 15 to 20 knots becoming northwest and
diminishing to around 10 knots. waves 2 to 4 feet subsiding to
1 to 2 feet. 
.saturday...west winds 5 to 15 knots diminishing to less than
10 knots. waves 1 to 2 feet. 
.sunday...northwest winds 10 knots or less becoming east. a
chance of showers sunday night. waves 1 foot or less. 
.monday...northeast winds 5 to 15 knots becoming north. a chance
of showers during the day. waves 2 feet or less. 

winds and waves higher in and near thunderstorms.

$$

fzus63 kdtx 181351
glfsc 
expires:202606182200;;958583

lake st clair forecast
national weather service detroit/pontiac mi
951 am edt thu jun 18 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...a very strong low pressure system, 29.20 inches, will
depart from lake huron into quebec today. this will re-orient
winds from the west-northwest for all locations by the afternoon.
breezy conditions will persist through the day in the wake of
this low pressure system.


lcz460-182200-
lake st clair-
951 am edt thu jun 18 2026

...small craft advisory in effect until 8 pm edt this evening...

.rest of today...west winds 20 to 25 knots with gusts to 30 knots.
partly sunny. waves 2 to 4 feet.
.tonight...west winds 15 to 20 knots diminishing to 10 to 15 knots
in the late evening and overnight. mostly clear. waves 1 to 3 feet.
.friday...west winds 5 to 10 knots increasing to 10 to 15 knots in
the late morning and afternoon. sunny. waves 2 feet or less.
.friday night...northwest winds 10 to 15 knots diminishing to 5 to
10 knots after midnight. mostly clear. waves 2 feet or less.
.saturday...west winds 5 to 10 knots. mostly sunny in the
morning...then mostly clear with a chance of light showers in the
afternoon and evening. waves 2 feet or less.
.sunday...east winds 10 to 15 knots. partly cloudy. a chance of
showers. waves 2 feet or less.
.monday...northeast winds 15 to 20 knots. partly cloudy. a chance of
showers. waves 1 to 3 feet.

$$

fzus63 kdtx 181351
glflh 
expires:202606182200;;958577

open lake forecast for lake huron
national weather service detroit/pontiac mi
951 am edt thu jun 18 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...a very strong low pressure system, 29.20 inches, will
depart from lake huron into quebec today. this will re-orient
winds from the west-northwest for all locations by the afternoon.
breezy conditions will persist through the day in the wake of
this low pressure system.


lhz361-182200-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
951 am edt thu jun 18 2026

.rest of today...northwest winds 10 to 15 knots becoming west
15 to 20 knots late in the afternoon. waves 3 to 5 feet. 
.tonight...west winds 15 to 20 knots decreasing to 10 to 15 knots
in the late evening and overnight. waves 2 to 4 feet. 
.friday...west winds 10 to 15 knots increasing to 15 to 20 knots
early in the afternoon. waves 2 to 4 feet. 
.friday night...west winds 10 to 15 knots becoming northwest 5 to
10 knots in the late evening and overnight. waves 2 to 4 feet
subsiding to 1 to 3 feet after midnight. 
.saturday...west winds 5 to 10 knots. waves 2 feet or less. 
.sunday...northwest winds 5 to 10 knots. waves 2 feet or less. 
.monday...northwest winds 5 to 10 knots increasing to 10 to
15 knots . waves 1 to 3 feet. 


$$

fzus63 kdtx 181351
glflh 
expires:202606182200;;958578

open lake forecast for lake huron
national weather service detroit/pontiac mi
951 am edt thu jun 18 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...a very strong low pressure system, 29.20 inches, will
depart from lake huron into quebec today. this will re-orient
winds from the west-northwest for all locations by the afternoon.
breezy conditions will persist through the day in the wake of
this low pressure system.


lhz362-363-182200-
lake huron from presque isle light to sturgeon point mi beyond
5nm off shore-
lake huron from sturgeon point to alabaster mi beyond 5nm off
shore-
951 am edt thu jun 18 2026

.rest of today...west winds 10 to 15 knots. waves 3 to 5 feet. 
.tonight...west winds 10 to 15 knots. waves 3 to 5 feet. 
.friday...west winds 10 to 15 knots. waves 3 to 5 feet. 
.friday night...northwest winds 10 to 15 knots decreasing to 5 to
10 knots in the late evening and overnight. waves 3 to 5 feet. 
.saturday...west winds 5 to 10 knots in the morning becoming
light and variable...then becoming northwest 5 to 10 knots late
in the evening. waves 1 to 3 feet. 
.sunday...northwest winds 5 to 10 knots early in the morning
becoming light and variable...then becoming northeast 5 to
10 knots by midnight. waves 2 feet or less. 
.monday...north winds 5 to 10 knots increasing to 10 to 15 knots.
waves 1 to 3 feet. 


$$

fzus63 kdtx 181351
glflh 
expires:202606182200;;958579

open lake forecast for lake huron
national weather service detroit/pontiac mi
951 am edt thu jun 18 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...a very strong low pressure system, 29.20 inches, will
depart from lake huron into quebec today. this will re-orient
winds from the west-northwest for all locations by the afternoon.
breezy conditions will persist through the day in the wake of
this low pressure system.


lhz462>464-182200-
lake huron from port austin to harbor beach beyond 5nm off shore-
lake huron from harbor beach to port sanilac beyond 5nm off shore-
lake huron from port sanilac to port huron beyond 5nm off shore-
951 am edt thu jun 18 2026

.rest of today...west winds 15 to 20 knots decreasing to 10 to
15 knots late in the afternoon. waves 3 to 5 feet. 
.tonight...west winds 10 to 15 knots. waves 2 to 4 feet subsiding
to 1 to 3 feet early in the morning. 
.friday...west winds 10 to 15 knots decreasing to 5 to 10 knots
in the late morning and afternoon. waves 1 to 3 feet. 
.friday night...light and variable winds becoming west 5 to
10 knots after midnight. waves 2 feet or less. 
.saturday...west winds 5 to 10 knots in the morning becoming
light and variable. waves 2 feet or less. 
.sunday...light and variable winds becoming northeast 5 to
10 knots . waves 2 feet or less. 
.monday...north winds 10 to 15 knots. waves 2 to 4 feet. 


$$

fzus63 kmkx 181346
glflm 
expires:202606182130;;958478

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
846 am cdt thu jun 18 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...

as low pressure of 29.3 inches in northern michigan will move
northeast into eastern quebec today. winds will shift to
northwesterly and diminish as this low pressure exits. high
pressure around 30.0 inches will build into the mid mississippi 
valley behind the exiting low, keeping northwest winds light 
through friday. winds may briefly turn southwesterly friday night 
as weak low pressure around 29.9 inches moves through the region,
but high pressure will rapidly regain dominance by saturday, 
keeping winds light and variable. stronger low pressure will 
approach from the central plains on sunday, bringing more 
widespread rain and thunderstorms and turning winds to 
northeasterly. northeast winds will continue into early next week.


lmz080-669-671-673-675-777-779-870-872-874-876-878-182130-
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-
846 am cdt thu jun 18 2026

sheboygan wi to pentwater mi south...

.rest of today...northwest winds to 30 kt becoming west 10 to
20 kt early this afternoon, then becoming southwest late. slight
chance of showers through mid morning. waves 5 to 8 ft
occasionally to 10 ft subsiding to 2 to 4 ft. 
.tonight...southwest winds 10 to 15 kt becoming northwest 10 to
20 kt. waves 1 to 3 ft. 
.friday...northwest winds 10 to 20 kt becoming southwest 10 to
15 kt. waves 1 to 3 ft. 
.friday night...south winds 10 to 15 kt becoming southwest.
chance of showers. waves 1 to 2 ft. 
.saturday...west winds 10 to 15 kt. waves 1 to 3 ft. 
.saturday night...south winds 5 to 10 kt backing to northeast.
waves 1 to 2 ft. 
.sunday...northeast winds 10 to 15 kt increasing to 15 to 25 kt.
chance of showers. waves 1 to 2 ft building to 2 to 4 ft. 
.monday...north winds to 30 kt. waves 5 to 8 ft occasionally to
10 ft.  

$$

fzus63 kmkx 181346
glflm 
expires:202606182130;;958477

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
846 am cdt thu jun 18 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...

as low pressure of 29.3 inches in northern michigan will move
northeast into eastern quebec today. winds will shift to
northwesterly and diminish as this low pressure exits. high
pressure around 30.0 inches will build into the mid mississippi 
valley behind the exiting low, keeping northwest winds light 
through friday. winds may briefly turn southwesterly friday night 
as weak low pressure around 29.9 inches moves through the region,
but high pressure will rapidly regain dominance by saturday, 
keeping winds light and variable. stronger low pressure will 
approach from the central plains on sunday, bringing more 
widespread rain and thunderstorms and turning winds to 
northeasterly. northeast winds will continue into early next week.


lmz261-362-364-366-563-565-567-868-182130-
lake michigan from seul choix point to rock island passage 5 nm
offshore to mid lake-
lake michigan south of a line from seul choix point to the
mackinac bridge and north of a line from charlevoix mi to south
fox island 5 nm offshore-
lake michigan from charlevoix to point betsie mi 5 nm offshore to
mid lake-
lake michigan from point betsie to manistee mi 5 nm offshore to
mid lake-
lake michigan from rock island passage to sturgeon bay wi-
lake michigan from sturgeon bay to two rivers wi 5 nm offshore to
mid lake-
lake michigan from two rivers to sheboygan wi 5 nm offshore to
mid lake-
lake michigan from pentwater to manistee mi 5 nm offshore to mid
lake-
846 am cdt thu jun 18 2026

sheboygan wi to pentwater mi north...

.rest of today...northwest winds 15 to 25 kt becoming southwest
10 to 20 kt. slight chance of showers through mid morning. waves
3 to 5 ft subsiding to 1 to 3 ft. 
.tonight...southwest winds 10 to 20 kt becoming northwest. slight
chance of showers in the evening. waves 1 to 3 ft. 
.friday...northwest winds 10 to 20 kt becoming southwest. waves
1 to 3 ft. 
.friday night...southwest winds 10 to 20 kt diminishing to 5 to
10 kt overnight. chance of showers overnight. waves 1 to 3 ft. 
.saturday...west winds 10 to 15 kt becoming southwest 10 to
20 kt. waves 1 to 2 ft. 
.saturday night...west winds 10 to 15 kt veering to northeast.
waves 1 to 2 ft. 
.sunday...north winds 5 to 10 kt increasing to 10 to 20 kt. waves
1 ft or less building to 1 to 2 ft. 
.monday...north winds 15 to 25 kt increasing to 30 kt. waves 3 to
5 ft.  

$$

fzus63 kmqt 181401
glfls 
expires:202606182000;;958909

open lake forecast for lake superior
national weather service marquette mi
1000 am edt thu jun 18 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... 

29.2 inch low pressure currently over central lower michigan tracks 
into southern quebec by this afternoon. this low slowly fills on 
friday while a 30.0 inch high builds over the upper mississippi 
valley, persisting into saturday. moving into early next week, a 
30.0 inch high pressure over northern canada drops  south over lake 
superior on sunday, increasing to 30.2 inches by monday as the 
parent high strengthens to 30.3 inches as it moves into western 
hudson bay.




lsz265-182000-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
1000 am edt thu jun 18 2026

.rest of today...west winds 15 to 25 knots. waves 2 to 4 feet
subsiding to 1 to 3 feet. 
.tonight...west winds 15 to 25 knots. waves subsiding to calm to
2 feet. 
.friday...west winds 15 to 25 knots diminishing to 10 to 20 knots
in the afternoon. waves calm to 2 feet. 
.friday night...west winds 5 to 15 knots. a slight chance of
showers after midnight. waves calm to 2 feet. 
.saturday...west winds 5 to 15 knots veering northwest by mid
afternoon. a slight chance of showers through early afternoon.
waves calm to 2 feet. 
.saturday night...west winds 5 to 15 knots. waves calm to 2 feet.
.sunday...north winds 5 to 15 knots backing northwest. waves calm
to 2 feet. 
.monday...north winds 5 to 15 knots backing west. waves calm to
2 feet. 

$$

fzus63 kmqt 181401
glfls 
expires:202606182000;;958910

open lake forecast for lake superior
national weather service marquette mi
1000 am edt thu jun 18 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... 

29.2 inch low pressure currently over central lower michigan tracks 
into southern quebec by this afternoon. this low slowly fills on 
friday while a 30.0 inch high builds over the upper mississippi 
valley, persisting into saturday. moving into early next week, a 
30.0 inch high pressure over northern canada drops  south over lake 
superior on sunday, increasing to 30.2 inches by monday as the 
parent high strengthens to 30.3 inches as it moves into western 
hudson bay.




lsz266-182000-
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-
1000 am edt thu jun 18 2026

.rest of today...northwest winds 15 to 25 knots backing west
late. waves 2 to 4 feet building to 3 to 5 feet occasionally to
7 feet, then subsiding to 2 to 4 feet. 
.tonight...west winds 15 to 25 knots veering northwest late.
waves subsiding to 1 to 3 feet, then building to 2 to 4 feet. 
.friday...northwest winds 15 to 25 knots becoming west 10 to
20 knots in the afternoon, then diminishing to 5 to 15 knots
late. waves subsiding to 1 to 3 feet. 
.friday night...west winds 5 to 15 knots. waves subsiding to calm
to 2 feet. 
.saturday...west winds 5 to 15 knots veering northwest by mid
afternoon. a slight chance of showers through early afternoon.
waves calm to 2 feet. 
.saturday night...west winds 5 to 15 knots veering northwest
after midnight. waves calm to 2 feet. 
.sunday...northwest winds 5 to 15 knots. waves calm to 2 feet. 
.monday...northwest winds 10 to 20 knots diminishing to 5 to
15 knots. waves calm to 2 feet. 

$$

fzus63 kmqt 181401
glfls 
expires:202606182000;;958907

open lake forecast for lake superior
national weather service marquette mi
1000 am edt thu jun 18 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... 

29.2 inch low pressure currently over central lower michigan tracks 
into southern quebec by this afternoon. this low slowly fills on 
friday while a 30.0 inch high builds over the upper mississippi 
valley, persisting into saturday. moving into early next week, a 
30.0 inch high pressure over northern canada drops  south over lake 
superior on sunday, increasing to 30.2 inches by monday as the 
parent high strengthens to 30.3 inches as it moves into western 
hudson bay.




lsz263-182000-
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-
1000 am edt thu jun 18 2026

.rest of today...west winds 5 to 15 knots increasing to 10 to
20 knots in the afternoon. a slight chance of showers and
thunderstorms by mid afternoon. waves calm to 2 feet building to
1 to 3 feet. 
.tonight...west winds 10 to 20 knots becoming northwest 5 to
15 knots after midnight. waves subsiding to calm to 2 feet. 
.friday...west winds 5 to 15 knots becoming southwest 10 to
20 knots in the afternoon. waves building to 1 to 3 feet. 
.friday night...southwest winds 5 to 15 knots veering west after
midnight. a slight chance of rain showers. waves subsiding to
calm to 2 feet. 
.saturday...west winds 5 to 15 knots. a slight chance of rain
showers. waves calm to 2 feet. 
.saturday night...west winds 5 to 15 knots becoming northwest
less than 10 knots after midnight. waves calm to 2 feet. 
.sunday...north winds less than 10 knots increasing to 5 to
15 knots. waves calm to 2 feet. 
.monday...north winds 5 to 15 knots backing west. waves calm to
2 feet. 

$$

fzus63 kmqt 181401
glfls 
expires:202606182000;;958906

open lake forecast for lake superior
national weather service marquette mi
1000 am edt thu jun 18 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... 

29.2 inch low pressure currently over central lower michigan tracks 
into southern quebec by this afternoon. this low slowly fills on 
friday while a 30.0 inch high builds over the upper mississippi 
valley, persisting into saturday. moving into early next week, a 
30.0 inch high pressure over northern canada drops  south over lake 
superior on sunday, increasing to 30.2 inches by monday as the 
parent high strengthens to 30.3 inches as it moves into western 
hudson bay.




lsz162-182000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1000 am edt thu jun 18 2026 /900 am cdt thu jun 18 2026/

.rest of today...west winds 10 to 20 knots. a slight chance of
showers and thunderstorms by mid afternoon. waves calm to 2 feet.
.tonight...west winds 10 to 20 knots diminishing to 5 to 15 knots
late. waves calm to 2 feet. 
.friday...west winds 5 to 15 knots backing southwest in the
afternoon. a slight chance of showers by mid afternoon. waves
calm to 2 feet. 
.friday night...southwest winds 5 to 15 knots veering west after
midnight. a chance of rain showers. waves calm to 2 feet. 
.saturday...west winds 5 to 15 knots. a slight chance of rain
showers. waves calm to 2 feet. 
.saturday night...northwest winds 5 to 15 knots becoming north
less than 10 knots after midnight. waves calm to 2 feet. 
.sunday...east winds 5 to 15 knots becoming north less than
10 knots. waves calm to 2 feet. 
.monday...north winds less than 10 knots. waves calm to 2 feet. 

$$

fzus63 kmqt 181401
glfls 
expires:202606182000;;958911

open lake forecast for lake superior
national weather service marquette mi
1000 am edt thu jun 18 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... 

29.2 inch low pressure currently over central lower michigan tracks 
into southern quebec by this afternoon. this low slowly fills on 
friday while a 30.0 inch high builds over the upper mississippi 
valley, persisting into saturday. moving into early next week, a 
30.0 inch high pressure over northern canada drops  south over lake 
superior on sunday, increasing to 30.2 inches by monday as the 
parent high strengthens to 30.3 inches as it moves into western 
hudson bay.




lsz267-182000-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
1000 am edt thu jun 18 2026

.rest of today...northwest winds 10 to 20 knots becoming west
15 to 25 knots in the afternoon. waves 1 to 3 feet building to
3 to 5 feet occasionally to 7 feet. 
.tonight...west winds 10 to 20 knots. waves subsiding to 1 to
3 feet, then building to 2 to 4 feet. 
.friday...west winds 10 to 20 knots increasing to 15 to 25 knots
in the afternoon, then diminishing to 10 to 20 knots late. waves
2 to 4 feet. 
.friday night...west winds 5 to 15 knots. waves subsiding to calm
to 2 feet. 
.saturday...west winds 5 to 15 knots veering northwest by mid
afternoon. waves calm to 2 feet. 
.saturday night...northwest winds 5 to 15 knots. waves calm to
2 feet. 
.sunday...northwest winds 5 to 15 knots increasing to 10 to
20 knots. waves calm to 2 feet. 
.monday...northwest winds 10 to 20 knots diminishing to 5 to
15 knots. waves calm to 2 feet. 

$$

fzus63 kmqt 181401
glfls 
expires:202606182000;;958908

open lake forecast for lake superior
national weather service marquette mi
1000 am edt thu jun 18 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... 

29.2 inch low pressure currently over central lower michigan tracks 
into southern quebec by this afternoon. this low slowly fills on 
friday while a 30.0 inch high builds over the upper mississippi 
valley, persisting into saturday. moving into early next week, a 
30.0 inch high pressure over northern canada drops  south over lake 
superior on sunday, increasing to 30.2 inches by monday as the 
parent high strengthens to 30.3 inches as it moves into western 
hudson bay.




lsz264-182000-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
1000 am edt thu jun 18 2026

.rest of today...west winds 10 to 20 knots. a slight chance of
showers by mid afternoon. waves calm to 2 feet building to 1 to
3 feet. 
.tonight...west winds 5 to 15 knots veering northwest after
midnight. a slight chance of showers through midnight. waves 1 to
3 feet. 
.friday...northwest winds 5 to 15 knots backing southwest late.
waves subsiding to calm to 2 feet. 
.friday night...southwest winds 5 to 15 knots veering west after
midnight. a slight chance of showers after midnight. waves calm
to 2 feet. 
.saturday...west winds 5 to 15 knots. a slight chance of rain
showers through early afternoon. waves calm to 2 feet. 
.saturday night...west winds 5 to 15 knots becoming northwest
less than 10 knots after midnight. waves calm to 2 feet. 
.sunday...northwest winds less than 10 knots increasing to 5 to
15 knots. waves calm to 2 feet. 
.monday...west winds 5 to 15 knots. waves calm to 2 feet. 

$$