fzus61 kbuf 252002
glflo 
expires:202606260300;;898539

open lake forecast for lake ontario
national weather service buffalo ny
402 pm edt thu jun 25 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...a weak 29.9 inch low over lake huron this evening will 
move to southern quebec through friday before passing across the 
canadian maritimes saturday. a 30.1 inch high will then build across 
the upper great lakes saturday, the lower great lakes sunday, and 
then southern quebec to new england by monday.


loz063>065-260300-
lake ontario open waters from hamlin beach to the saint lawrence
river-
402 pm edt thu jun 25 2026

.tonight...east winds 15 to 20 knots becoming south. showers with
a chance of thunderstorms this evening, then a chance of showers
after midnight. waves 1 to 3 feet. 
.friday...southwest winds 15 to 20 knots becoming west and
diminishing to 5 to 10 knots. waves 1 to 3 feet. 
.friday night...west winds 5 to 10 knots becoming light and
variable. waves 1 foot or less. 
.saturday...light and variable winds. waves 1 foot or less. 
.saturday night...north winds less than 10 knots becoming
northwest. waves 1 foot or less. 
.sunday...northwest winds less than 10 knots. waves 1 foot or
less. 
.monday...light and variable winds. waves 1 foot or less. 
.tuesday...south winds 10 knots or less. a chance of showers
tuesday night. waves 1 foot or less. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kbuf 252002
glflo 
expires:202606260300;;898538

open lake forecast for lake ontario
national weather service buffalo ny
402 pm edt thu jun 25 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...a weak 29.9 inch low over lake huron this evening will 
move to southern quebec through friday before passing across the 
canadian maritimes saturday. a 30.1 inch high will then build across 
the upper great lakes saturday, the lower great lakes sunday, and 
then southern quebec to new england by monday.


loz062-260300-
lake ontario open waters from the niagara river to hamlin beach-
402 pm edt thu jun 25 2026

.tonight...east winds 15 to 20 knots becoming northwest 5 to
15 knots. showers likely with a chance of thunderstorms early,
then a chance of showers and thunderstorms late this evening.
waves 1 to 3 feet. 
.friday...west winds 5 to 10 knots. waves 1 foot or less. 
.friday night...west winds less than 10 knots. waves 1 foot or
less. 
.saturday...northeast winds 10 knots or less. waves 1 foot or
less. 
.saturday night...northeast winds 10 knots or less becoming
northwest. waves 1 foot or less. 
.sunday...light and variable winds. waves 1 foot or less. 
.monday...southeast winds 10 knots or less. waves 1 foot or less.
.tuesday...south winds 5 to 15 knots becoming southwest. a chance
of showers and thunderstorms tuesday night. waves 2 feet or less.

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 251947
glfle 
expires:202606260215;;898023

open lake forecast for lake erie
national weather service cleveland oh
347 pm edt thu jun 25 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 move east across the lake tonight. this front will 
stall just south of the area late friday through sunday as high 
pressure 30.10 inches builds south across the great lakes. the 
stalled front will lift back north as a warm front on monday as high 
pressure 30.00 inches builds across the ohio valley.


lez061-169-260215-
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-
347 pm edt thu jun 25 2026

.tonight...south winds 5 to 10 knots becoming southwest. a chance
of showers and thunderstorms this evening, then a slight chance
of showers after midnight. waves 2 feet or less. 
.friday...west winds 5 to 10 knots. waves 2 feet or less. 
.friday night...southwest winds less than 10 knots becoming east.
a chance of showers in the evening, then showers likely
overnight. waves 1 foot or less. 
.saturday...northeast winds 5 to 10 knots. a chance of showers.
waves 1 foot or less. 
.saturday night...northeast winds 5 to 10 knots. waves 1 foot or
less. 
.sunday...northeast winds 10 knots or less becoming east. waves
1 foot or less. 
.monday...east winds 10 knots or less becoming south. waves
1 foot or less. 
.tuesday...southwest winds 5 to 10 knots. a chance of showers and
thunderstorms tuesday night. waves 1 foot or less. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 251947
glfle 
expires:202606260215;;898021

open lake forecast for lake erie
national weather service cleveland oh
347 pm edt thu jun 25 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 move east across the lake tonight. this front will 
stall just south of the area late friday through sunday as high 
pressure 30.10 inches builds south across the great lakes. the 
stalled front will lift back north as a warm front on monday as high 
pressure 30.00 inches builds across the ohio valley.


lez162>164-260215-
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-
347 pm edt thu jun 25 2026

.tonight...southwest winds 5 to 10 knots becoming west. a chance
of showers and thunderstorms early. waves 1 foot or less. 
.friday...northwest winds 10 knots or less becoming east. a
slight chance of showers early in the afternoon. a chance of
showers late. waves 1 foot or less. 
.friday night...southeast winds 5 to 15 knots becoming east.
showers likely. waves 2 feet or less. 
.saturday...northeast winds 10 to 15 knots. a chance of showers
in the morning. waves 1 to 2 feet. 
.saturday night...northeast winds 5 to 10 knots. waves 2 feet or
less. 
.sunday...northeast winds 5 to 10 knots becoming east. waves
1 foot or less. 
.monday...southeast winds 5 to 10 knots becoming south. waves
1 foot or less. 
.tuesday...southwest winds 5 to 10 knots. waves 1 foot or less. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 251947
glfle 
expires:202606260215;;898022

open lake forecast for lake erie
national weather service cleveland oh
347 pm edt thu jun 25 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 move east across the lake tonight. this front will 
stall just south of the area late friday through sunday as high 
pressure 30.10 inches builds south across the great lakes. the 
stalled front will lift back north as a warm front on monday as high 
pressure 30.00 inches builds across the ohio valley.


lez165>168-260215-
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-
347 pm edt thu jun 25 2026

.tonight...southwest winds 5 to 10 knots becoming west. a chance
of showers and thunderstorms early, then a slight chance of
showers and thunderstorms late this evening. waves 1 to 2 feet. 
.friday...west winds 10 knots or less becoming southwest. a
slight chance of showers late. waves 1 foot or less. 
.friday night...southeast winds 5 to 10 knots becoming east. a
chance of showers in the evening, then showers likely overnight.
waves 1 foot or less. 
.saturday...northeast winds 10 to 15 knots. a chance of showers.
waves 2 feet or less. 
.saturday night...northeast winds 5 to 10 knots. waves 1 to
2 feet. 
.sunday...northeast winds 5 to 10 knots becoming east. waves
2 feet or less. 
.monday...southeast winds 10 knots or less becoming south. waves
2 feet or less. 
.tuesday...southwest winds 5 to 10 knots. waves 1 to 2 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus63 kdtx 252001
glfsc 
expires:202606260415;;898494

lake st clair forecast
national weather service detroit/pontiac mi
401 pm edt thu jun 25 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...low pressure, 29.80 inches will move from central
lower michigan this afternoon across southern lake huron this
evening. a high pressure, 30.10 inches, will build into the
region from the northwest tonight and will persist through the
weekend for most of the area. the caveat to this will be a low,
29.60 inches, that tracks through the far southern great lakes
possibly impacting lakes st clair and erie friday afternoon.


lcz460-260415-
lake st clair-
401 pm edt thu jun 25 2026

.tonight...west winds 5 to 10 knots. mostly clear. a chance of
showers and thunderstorms early in the evening. waves 2 feet or
less.
.friday...northwest winds 5 to 10 knots early in the morning
becoming light and variable. partly sunny. waves 2 feet or less.
.friday night...east winds 5 to 10 knots becoming northeast 10 to 15
knots after midnight. partly cloudy. a chance of light showers early
in the evening. waves 2 feet or less.
.saturday...northeast winds 10 to 15 knots diminishing to 5 to 10
knots early in the afternoon. mostly cloudy early in the morning
then clearing. waves 2 feet or less.
.saturday night...northeast winds 5 to 10 knots. mostly clear. waves
2 feet or less.
.sunday...northeast winds 5 to 10 knots veering to the southeast in
the afternoon and evening. mostly clear. waves 2 feet or less.
.monday...southeast winds 10 to 15 knots. mostly clear. waves 2 feet
or less.
.tuesday...southwest winds 10 to 15 knots. mostly clear. waves 2
feet or less.

$$

fzus63 kdtx 252001
glflh 
expires:202606260415;;898437

open lake forecast for lake huron
national weather service detroit/pontiac mi
401 pm edt thu jun 25 2026

for waters beyond five nautical miles off shore on lake huron

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

.synopsis...low pressure, 29.80 inches will move from central
lower michigan this afternoon across southern lake huron this
evening. a high pressure, 30.10 inches, will build into the
region from the northwest tonight and will persist through the
weekend for most of the area. the caveat to this will be a low,
29.60 inches, that tracks through the far southern great lakes
possibly impacting lakes st clair and erie friday afternoon.


lhz462>464-260415-
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-
401 pm edt thu jun 25 2026

.tonight...light and variable winds becoming west 5 to 10 knots
after midnight. a chance of showers and thunderstorms in the
evening. waves 2 feet or less. 
.friday...northwest winds 5 to 10 knots until late afternoon
becoming light and variable. waves 2 feet or less. 
.friday night...light and variable winds. waves 2 feet or less. 
.saturday...north winds 5 to 10 knots. waves 2 feet or less. 
.saturday night...north winds 5 to 10 knots  becoming light and
variable. waves 2 feet or less. 
.sunday...light and variable winds becoming north 5 to 10 knots
late in the afternoon...then veering to the east late in the
evening. waves 2 feet or less. 
.monday...southeast winds 5 to 10 knots increasing to 10 to
15 knots . waves 1 to 3 feet. 
.tuesday...south winds 10 to 15 knots. a chance of showers by
midnight. waves 1 to 3 feet. 


$$

fzus63 kdtx 252001
glflh 
expires:202606260415;;898436

open lake forecast for lake huron
national weather service detroit/pontiac mi
401 pm edt thu jun 25 2026

for waters beyond five nautical miles off shore on lake huron

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

.synopsis...low pressure, 29.80 inches will move from central
lower michigan this afternoon across southern lake huron this
evening. a high pressure, 30.10 inches, will build into the
region from the northwest tonight and will persist through the
weekend for most of the area. the caveat to this will be a low,
29.60 inches, that tracks through the far southern great lakes
possibly impacting lakes st clair and erie friday afternoon.


lhz362-363-260415-
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-
401 pm edt thu jun 25 2026

.tonight...northeast winds 5 to 10 knots backing to the northwest
early in the morning. waves 2 feet or less. 
.friday...northwest winds 5 to 10 knots in the morning becoming
light and variable. waves 2 feet or less. 
.friday night...light and variable winds. waves 2 feet or less. 
.saturday...light and variable winds becoming north 5 to 10 knots
in the late morning and early afternoon...then becoming light and
variable early in the afternoon. waves 2 feet or less. 
.saturday night...light and variable winds. waves 2 feet or less.
.sunday...light and variable winds becoming east 5 to 10 knots
late in the evening. waves 2 feet or less. 
.monday...southeast winds 5 to 10 knots becoming south 15 to
20 knots. waves 1 to 3 feet building to 2 to 4 feet. 
.tuesday...south winds 10 to 15 knots decreasing to 5 to 10 knots
by midnight. a chance of showers by midnight. waves 2 to 4 feet. 


$$

fzus63 kdtx 252001
glflh 
expires:202606260415;;898435

open lake forecast for lake huron
national weather service detroit/pontiac mi
401 pm edt thu jun 25 2026

for waters beyond five nautical miles off shore on lake huron

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

.synopsis...low pressure, 29.80 inches will move from central
lower michigan this afternoon across southern lake huron this
evening. a high pressure, 30.10 inches, will build into the
region from the northwest tonight and will persist through the
weekend for most of the area. the caveat to this will be a low,
29.60 inches, that tracks through the far southern great lakes
possibly impacting lakes st clair and erie friday afternoon.


lhz361-260415-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
401 pm edt thu jun 25 2026

.tonight...northeast winds 5 to 10 knots early in the evening
becoming light and variable...then becoming northwest 5 to
10 knots early in the morning. waves 2 feet or less. 
.friday...northwest winds 5 to 10 knots early in the morning
becoming light and variable. waves 2 feet or less. 
.friday night...light and variable winds. waves 2 feet or less. 
.saturday...light and variable winds. waves 2 feet or less. 
.saturday night...light and variable winds. waves 2 feet or less.
.sunday...light and variable winds becoming east 5 to 10 knots
late in the morning...then increasing to 10 to 15 knots late in
the afternoon becoming southeast 5 to 10 knots late in the
evening. waves 2 feet or less building to 3 to 5 feet late in the
afternoon. 
.monday...southeast winds 10 to 15 knots increasing to 15 to
20 knots until early evening...then decreasing to 10 to 15 knots
by midnight. waves 2 to 4 feet building to 3 to 5 feet. 
.tuesday...south winds 10 to 15 knots becoming southeast by
midnight. a chance of showers . waves 2 to 4 feet subsiding to
1 to 3 feet. 


$$

fzus63 kmkx 251948
glflm 
expires:202606260330;;898026

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
248 pm cdt thu jun 25 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...

weak low pressure around 29.9 inches over northwest lower 
michigan will continue eastward tonight, with relatively light
north to northeast winds. high pressure around 30.1 inches over 
ontario and the western great lakes will dominate friday through 
saturday, with light north to northeast winds lingering. low 
pressure will deepen to around 29.3 inches over the central plains
on sunday, bringing breezy southeasterly winds to the lake. winds
then turn southerly and strengthen into monday, as low pressure 
exits into the canadian prairies. these winds may linger into a
good portion of next week.


lmz261-362-364-366-563-565-567-868-260330-
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-
248 pm cdt thu jun 25 2026

sheboygan wi to pentwater mi north...

.tonight...north winds 10 to 20 kt diminishing to 5 to 10 kt.
waves 1 to 2 ft. 
.friday...north winds 5 to 10 kt increasing to 10 to 20 kt. waves
1 to 2 ft. 
.friday night...north winds 10 to 15 kt becoming northeast. waves
1 to 2 ft. 
.saturday...northeast winds 5 to 10 kt increasing to 10 to 20 kt
in the afternoon. waves 1 to 2 ft. 
.saturday night...northeast winds 10 to 15 kt becoming southeast.
waves 1 to 2 ft. 
.sunday...southeast winds 10 to 20 kt. waves 1 to 3 ft. 
.sunday night...southeast winds 10 to 20 kt increasing to 15 to
25 kt. waves 2 to 4 ft building to 4 to 6 ft occasionally to
8 ft. 
.monday...south winds 15 to 25 kt increasing to 30 kt. waves 4 to
7 ft occasionally to 9 ft. 
.tuesday...south winds 15 to 25 kt. waves 4 to 6 ft occasionally
to 8 ft.  

$$

fzus63 kmkx 251948
glflm 
expires:202606260330;;898027

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
248 pm cdt thu jun 25 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...

weak low pressure around 29.9 inches over northwest lower 
michigan will continue eastward tonight, with relatively light
north to northeast winds. high pressure around 30.1 inches over 
ontario and the western great lakes will dominate friday through 
saturday, with light north to northeast winds lingering. low 
pressure will deepen to around 29.3 inches over the central plains
on sunday, bringing breezy southeasterly winds to the lake. winds
then turn southerly and strengthen into monday, as low pressure 
exits into the canadian prairies. these winds may linger into a
good portion of next week.


lmz080-669-671-673-675-777-779-870-872-874-876-878-260330-
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-
248 pm cdt thu jun 25 2026

sheboygan wi to pentwater mi south...

.tonight...north winds 10 to 15 kt diminishing to 5 to 10 kt.
waves 1 to 2 ft. 
.friday...northeast winds 5 to 10 kt increasing to 10 to 20 kt.
slight chance of showers in the afternoon. waves 1 to 3 ft. 
.friday night...northeast winds 10 to 20 kt diminishing to 10 to
15 kt. waves 1 to 3 ft. 
.saturday...northeast winds 10 to 15 kt becoming north 10 to
20 kt. waves 1 to 3 ft. 
.saturday night...northeast winds 10 to 15 kt becoming east.
waves 1 to 2 ft. 
.sunday...southeast winds 10 to 20 kt. waves 2 to 4 ft. 
.sunday night...southeast winds 10 to 20 kt increasing to 15 to
25 kt. waves 3 to 5 ft building to 4 to 6 ft occasionally to
8 ft. 
.monday...south winds 15 to 25 kt increasing to 30 kt. waves 4 to
7 ft occasionally to 9 ft. 
.tuesday...south winds 10 to 20 kt increasing to 15 to 25 kt.
waves 3 to 5 ft.  

$$

fzus63 kmqt 252001
glfls 
expires:202606260800;;898427

open lake forecast for lake superior
national weather service marquette mi
400 pm edt thu jun 25 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 29.9 inch low currently tracking through lower michigan continues 
towards the st. lawrence seaway tonight into friday. as it leaves 
the upper midwest, expect weak 30.0 inch ridging to return to lake 
superior today, building to 30.1 inches by friday morning and 
remaining that way into at least sunday morning. meanwhile late this 
weekend, a 29.2 inch low lifts from the rockies towards the northern 
plains and canadian prairies, eventually becoming a 29.0 inch low 
spinning over the canadian prairies by tuesday morning. expect this 
to cause progressively deepening troughing over lake superior early 
next week, with the troughing over the lake becoming 29.8 inches by 
tuesday morning. 




lsz266-260800-
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 edt thu jun 25 2026

.late this afternoon...northwest winds 5 to 15 knots. waves calm
to 2 feet. 
.tonight...northwest winds 5 to 15 knots. waves calm to 2 feet. 
.friday...northwest winds 5 to 15 knots backing west in the
afternoon, then veering northwest late. waves calm to 2 feet. 
.friday night...east winds 5 to 15 knots veering west after
midnight, then veering northwest late. waves calm to 2 feet. 
.saturday...north winds 5 to 15 knots veering east by mid
afternoon. waves calm to 2 feet. 
.saturday night...east winds 5 to 15 knots veering southeast
after midnight. waves calm to 2 feet. 
.sunday...southeast winds 10 to 20 knots becoming east 15 to
25 knots by mid afternoon. waves building to 2 to 4 feet. 
.sunday night...southeast winds 15 to 25 knots increasing to
20 to 30 knots after midnight. a chance of showers. waves
building to 3 to 5 feet occasionally to 7 feet. 
.monday...southeast winds 20 to 30 knots becoming south 15 to
25 knots. a chance of showers. waves building to 4 to 7 feet
occasionally to 9 feet, then subsiding to 2 to 4 feet. 
.tuesday...south winds 10 to 20 knots. a chance of showers. waves
subsiding to calm to 2 feet. 

$$

fzus63 kmqt 252001
glfls 
expires:202606260800;;898426

open lake forecast for lake superior
national weather service marquette mi
400 pm edt thu jun 25 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 29.9 inch low currently tracking through lower michigan continues 
towards the st. lawrence seaway tonight into friday. as it leaves 
the upper midwest, expect weak 30.0 inch ridging to return to lake 
superior today, building to 30.1 inches by friday morning and 
remaining that way into at least sunday morning. meanwhile late this 
weekend, a 29.2 inch low lifts from the rockies towards the northern 
plains and canadian prairies, eventually becoming a 29.0 inch low 
spinning over the canadian prairies by tuesday morning. expect this 
to cause progressively deepening troughing over lake superior early 
next week, with the troughing over the lake becoming 29.8 inches by 
tuesday morning. 




lsz265-260800-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
400 pm edt thu jun 25 2026

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

$$

fzus63 kmqt 252001
glfls 
expires:202606260800;;898425

open lake forecast for lake superior
national weather service marquette mi
400 pm edt thu jun 25 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 29.9 inch low currently tracking through lower michigan continues 
towards the st. lawrence seaway tonight into friday. as it leaves 
the upper midwest, expect weak 30.0 inch ridging to return to lake 
superior today, building to 30.1 inches by friday morning and 
remaining that way into at least sunday morning. meanwhile late this 
weekend, a 29.2 inch low lifts from the rockies towards the northern 
plains and canadian prairies, eventually becoming a 29.0 inch low 
spinning over the canadian prairies by tuesday morning. expect this 
to cause progressively deepening troughing over lake superior early 
next week, with the troughing over the lake becoming 29.8 inches by 
tuesday morning. 




lsz264-260800-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
400 pm edt thu jun 25 2026

.late this afternoon...west winds 5 to 15 knots. waves calm to
2 feet. 
.tonight...west winds 5 to 15 knots. waves calm to 2 feet. 
.friday...west winds less than 10 knots backing southwest in the
afternoon. waves calm to 2 feet. 
.friday night...east winds less than 10 knots veering southeast
after midnight, then backing east late. waves calm to 2 feet. 
.saturday...east winds 5 to 15 knots. waves calm to 2 feet. 
.saturday night...east winds 5 to 15 knots veering southeast
after midnight. waves calm to 2 feet. 
.sunday...southeast winds 5 to 15 knots becoming east 15 to
25 knots by mid afternoon. waves building to 2 to 4 feet. 
.sunday night...southeast winds 15 to 25 knots. a chance of
showers. waves building to 3 to 5 feet occasionally to 7 feet. 
.monday...southeast winds 15 to 25 knots becoming south 10 to
20 knots. showers likely. waves building to 4 to 7 feet
occasionally to 9 feet, then subsiding to 2 to 4 feet. 
.tuesday...southwest winds 5 to 15 knots backing south. a chance
of showers. waves subsiding to calm to 2 feet. 

$$

fzus63 kmqt 252001
glfls 
expires:202606260800;;898424

open lake forecast for lake superior
national weather service marquette mi
400 pm edt thu jun 25 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 29.9 inch low currently tracking through lower michigan continues 
towards the st. lawrence seaway tonight into friday. as it leaves 
the upper midwest, expect weak 30.0 inch ridging to return to lake 
superior today, building to 30.1 inches by friday morning and 
remaining that way into at least sunday morning. meanwhile late this 
weekend, a 29.2 inch low lifts from the rockies towards the northern 
plains and canadian prairies, eventually becoming a 29.0 inch low 
spinning over the canadian prairies by tuesday morning. expect this 
to cause progressively deepening troughing over lake superior early 
next week, with the troughing over the lake becoming 29.8 inches by 
tuesday morning. 




lsz263-260800-
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 edt thu jun 25 2026

.late this afternoon...west winds less than 10 knots. waves calm
to 2 feet. 
.tonight...west winds 5 to 15 knots becoming southwest less than
10 knots after midnight. patchy dense fog after midnight. waves
calm to 2 feet. 
.friday...southwest winds less than 10 knots increasing to 5 to
15 knots in the afternoon, then backing northeast late. waves
calm to 2 feet. 
.friday night...east winds 5 to 15 knots. waves calm to 2 feet. 
.saturday...east winds 5 to 15 knots becoming northeast 10 to
20 knots by mid afternoon. waves calm to 2 feet. 
.saturday night...east winds 10 to 20 knots becoming southeast
5 to 15 knots after midnight. waves calm to 2 feet. 
.sunday...east winds 5 to 15 knots increasing to 10 to 20 knots
by mid afternoon. waves building to 2 to 4 feet. 
.sunday night...southeast winds 15 to 25 knots. a chance of
showers. waves building to 3 to 5 feet occasionally to 7 feet,
then subsiding to 2 to 4 feet. 
.monday...east winds 15 to 25 knots becoming south 10 to
20 knots. a chance of showers and thunderstorms. waves building
to 3 to 5 feet occasionally to 7 feet, then subsiding to 1 to
3 feet. 
.tuesday...southwest winds 5 to 15 knots. a chance of
thunderstorms. showers likely. waves subsiding to calm to 2 feet.

$$

fzus63 kmqt 252001
glfls 
expires:202606260800;;898423

open lake forecast for lake superior
national weather service marquette mi
400 pm edt thu jun 25 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 29.9 inch low currently tracking through lower michigan continues 
towards the st. lawrence seaway tonight into friday. as it leaves 
the upper midwest, expect weak 30.0 inch ridging to return to lake 
superior today, building to 30.1 inches by friday morning and 
remaining that way into at least sunday morning. meanwhile late this 
weekend, a 29.2 inch low lifts from the rockies towards the northern 
plains and canadian prairies, eventually becoming a 29.0 inch low 
spinning over the canadian prairies by tuesday morning. expect this 
to cause progressively deepening troughing over lake superior early 
next week, with the troughing over the lake becoming 29.8 inches by 
tuesday morning. 




lsz162-260800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
400 pm edt thu jun 25 2026 /300 pm cdt thu jun 25 2026/

.late this afternoon...north winds less than 10 knots. waves calm
to 2 feet. 
.tonight...north winds 5 to 15 knots diminishing to less than
10 knots after midnight. patchy fog after midnight. waves calm to
2 feet. 
.friday...north winds less than 10 knots increasing to 5 to
15 knots in the afternoon, then veering northeast late. waves
calm to 2 feet. 
.friday night...east winds 5 to 15 knots backing northeast after
midnight. waves calm to 2 feet. 
.saturday...east winds 5 to 15 knots becoming northeast 10 to
20 knots by mid afternoon. waves calm to 2 feet. 
.saturday night...northeast winds 10 to 20 knots diminishing to
5 to 15 knots after midnight. waves calm to 2 feet. 
.sunday...east winds 10 to 20 knots becoming northeast 15 to
25 knots by mid afternoon. a chance of showers. waves building to
2 to 4 feet. 
.sunday night...east winds 20 to 30 knots diminishing to 10 to
20 knots after midnight. a chance of showers through midnight. a
chance of thunderstorms. showers likely after midnight. waves
building to 3 to 5 feet occasionally to 7 feet, then subsiding to
2 to 4 feet. 
.monday...east winds 10 to 20 knots backing northeast. a chance
of showers and thunderstorms. waves subsiding to calm to 2 feet. 
.tuesday...southwest winds 5 to 15 knots veering north. a chance
of thunderstorms. showers likely. waves calm to 2 feet. 

$$

fzus63 kmqt 252001
glfls 
expires:202606260800;;898428

open lake forecast for lake superior
national weather service marquette mi
400 pm edt thu jun 25 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 29.9 inch low currently tracking through lower michigan continues 
towards the st. lawrence seaway tonight into friday. as it leaves 
the upper midwest, expect weak 30.0 inch ridging to return to lake 
superior today, building to 30.1 inches by friday morning and 
remaining that way into at least sunday morning. meanwhile late this 
weekend, a 29.2 inch low lifts from the rockies towards the northern 
plains and canadian prairies, eventually becoming a 29.0 inch low 
spinning over the canadian prairies by tuesday morning. expect this 
to cause progressively deepening troughing over lake superior early 
next week, with the troughing over the lake becoming 29.8 inches by 
tuesday morning. 




lsz267-260800-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
400 pm edt thu jun 25 2026

.late this afternoon...north winds 10 to 20 knots. a chance of
showers. waves calm to 2 feet. 
.tonight...northwest winds 5 to 15 knots. waves calm to 2 feet. 
.friday...northwest winds 5 to 15 knots backing west in the
afternoon, then veering northwest late. waves calm to 2 feet. 
.friday night...west winds 5 to 15 knots veering northwest after
midnight. waves calm to 2 feet. 
.saturday...northwest winds 5 to 15 knots. waves calm to 2 feet. 
.saturday night...east winds 5 to 15 knots veering southeast
after midnight. waves calm to 2 feet. 
.sunday...east winds 5 to 15 knots increasing to 10 to 20 knots
by mid afternoon. waves calm to 2 feet. 
.sunday night...southeast winds 15 to 25 knots. a chance of
showers after midnight. waves building to 2 to 4 feet. 
.monday...southeast winds 15 to 25 knots veering south. a chance
of showers. waves building to 3 to 5 feet occasionally to 7 feet,
then subsiding to 2 to 4 feet. 
.tuesday...south winds 10 to 20 knots backing southeast. a chance
of showers. waves subsiding to calm to 2 feet. 

$$