fzus61 kbuf 140801
glflo 
expires:202608141500;;163032

open lake forecast for lake ontario
national weather service buffalo ny
401 am edt fri aug 14 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 high pressure ridge averaging 30.2 inches builds from the canadian 
prairies before settling over lake ontario and vicinity by saturday. 
the ridge begins to exit eastward saturday night and a low of 29.7 
inches should move generally east-southeastward from near the 
northern great lakes to near the gulf of maine saturday night 
through monday. this low track should allow a warm front to sweep 
northeastward across lake ontario saturday night and especially on 
sunday before a cold front sweeps eastward across the lake sunday 
evening through sunday night. behind the cold front, a high pressure 
ridge averaging 30.0 inches should build slowly from the upper 
midwest through tuesday.


loz062-141500-
lake ontario open waters from the niagara river to hamlin beach-
401 am edt fri aug 14 2026

.today...north winds less than 10 knots. waves 1 foot or less. 
.tonight...east winds 10 knots or less. waves 1 foot or less. 
.saturday...east winds 5 to 10 knots. waves 1 to 2 feet. 
.saturday night...east winds 5 to 10 knots becoming southeast.
waves 1 to 2 feet. 
.sunday...southeast winds 5 to 10 knots becoming northwest.
showers likely with a chance of thunderstorms. waves 1 to 2 feet.
.monday...northwest winds 5 to 10 knots becoming north. waves
1 foot or less. 
.tuesday...northwest winds 10 knots or less becoming southwest.
waves 1 foot or less. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kbuf 140801
glflo 
expires:202608141500;;163033

open lake forecast for lake ontario
national weather service buffalo ny
401 am edt fri aug 14 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 high pressure ridge averaging 30.2 inches builds from the canadian 
prairies before settling over lake ontario and vicinity by saturday. 
the ridge begins to exit eastward saturday night and a low of 29.7 
inches should move generally east-southeastward from near the 
northern great lakes to near the gulf of maine saturday night 
through monday. this low track should allow a warm front to sweep 
northeastward across lake ontario saturday night and especially on 
sunday before a cold front sweeps eastward across the lake sunday 
evening through sunday night. behind the cold front, a high pressure 
ridge averaging 30.0 inches should build slowly from the upper 
midwest through tuesday.


loz063>065-141500-
lake ontario open waters from hamlin beach to the saint lawrence
river-
401 am edt fri aug 14 2026

.today...northeast winds 10 knots or less. a chance of showers
late. waves 1 foot or less. 
.tonight...northeast winds 10 knots or less becoming east. waves
1 foot or less. 
.saturday...east winds 5 to 10 knots becoming northeast. waves
1 foot or less. 
.saturday night...east winds 5 to 10 knots becoming southeast.
waves 2 feet or less. 
.sunday...southeast winds 5 to 15 knots becoming west. showers
likely with a chance of thunderstorms. waves 2 feet or less. 
.monday...northwest winds 5 to 15 knots becoming north. waves
2 feet or less. 
.tuesday...northwest winds 10 knots or less becoming southwest
10 to 15 knots. waves 1 foot or less. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 140802
glfle 
expires:202608141430;;163112

open lake forecast for lake erie
national weather service cleveland oh
402 am edt fri aug 14 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...
high pressure 30.00 inches builds into the upper great lakes 
tonight and friday before departing to the east saturday. low 
pressure 29.80 inches will drift across the central great lakes 
sunday, moving a warm front north in the morning and a cold front 
east sunday night. high pressure 30.10 inches returns monday and
tuesday.


lez165>167-141430-
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-
402 am edt fri aug 14 2026

.today...east winds 5 to 10 knots becoming northeast. waves
1 foot or less. 
.tonight...northeast winds 5 to 10 knots becoming east. waves
1 foot or less. 
.saturday...east winds 5 to 10 knots. waves 2 feet or less. 
.saturday night...east winds 10 to 15 knots becoming southeast. a
chance of showers and thunderstorms in the evening, then showers
likely with a chance of thunderstorms overnight. waves 1 to
3 feet. 
.sunday...southwest winds 10 to 15 knots becoming northwest.
showers likely with a chance of thunderstorms during the day,
then a chance of showers and thunderstorms sunday night. waves
2 to 4 feet. 
.monday...north winds 5 to 15 knots. waves 2 feet or less. 
.tuesday...north winds 10 knots or less becoming southwest 10 to
15 knots. waves 1 foot or less. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 140802
glfle 
expires:202608141430;;163113

open lake forecast for lake erie
national weather service cleveland oh
402 am edt fri aug 14 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...
high pressure 30.00 inches builds into the upper great lakes 
tonight and friday before departing to the east saturday. low 
pressure 29.80 inches will drift across the central great lakes 
sunday, moving a warm front north in the morning and a cold front 
east sunday night. high pressure 30.10 inches returns monday and
tuesday.


lez061-168-169-141430-
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-
402 am edt fri aug 14 2026

.today...northeast winds 10 knots or less. waves 1 foot or less. 
.tonight...northeast winds 10 knots or less becoming east. waves
1 foot or less. 
.saturday...east winds 5 to 10 knots becoming northeast. waves
1 foot or less. 
.saturday night...east winds 5 to 15 knots becoming southeast. a
chance of showers overnight. waves 2 feet or less. 
.sunday...south winds 10 to 15 knots becoming northwest. showers
during the day, then showers likely with a chance of
thunderstorms sunday night. waves 2 to 4 feet subsiding to 1 to
3 feet. 
.monday...northwest winds 5 to 15 knots becoming north. waves
2 feet or less. 
.tuesday...northwest winds 10 knots or less becoming southwest
10 to 15 knots. waves 1 foot or less. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 140802
glfle 
expires:202608141430;;163111

open lake forecast for lake erie
national weather service cleveland oh
402 am edt fri aug 14 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...
high pressure 30.00 inches builds into the upper great lakes 
tonight and friday before departing to the east saturday. low 
pressure 29.80 inches will drift across the central great lakes 
sunday, moving a warm front north in the morning and a cold front 
east sunday night. high pressure 30.10 inches returns monday and
tuesday.


lez162>164-141430-
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-
402 am edt fri aug 14 2026

.today...east winds 5 to 10 knots. a slight chance of showers
this morning. waves 1 foot or less. 
.tonight...east winds 5 to 10 knots. waves 1 foot or less. 
.saturday...east winds 5 to 10 knots. waves 2 feet or less. 
.saturday night...east winds 5 to 10 knots becoming south.
showers with a chance of thunderstorms. waves 1 to 2 feet. 
.sunday...southwest winds 10 to 15 knots becoming northwest.
showers likely with a chance of thunderstorms during the day.
waves 1 to 3 feet. 
.monday...north winds 5 to 15 knots becoming northeast less than
10 knots. waves 2 feet or less. 
.tuesday...northwest winds 10 knots or less becoming southwest.
waves 1 foot or less. 

winds and waves higher in and near thunderstorms.

$$

fzus63 kdtx 140744
glfsc 
expires:202608141545;;162605

lake st clair forecast
national weather service detroit/pontiac mi
344 am edt fri aug 14 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...high pressure, 30.00 inches, will dominate the region
through saturday. the next low pressure system will pass through
the region on saturday night bringing the next thunderstorm
chances.


lcz460-141545-
lake st clair-
344 am edt fri aug 14 2026

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

$$

fzus63 kdtx 140743
glflh 
expires:202608141545;;162554

open lake forecast for lake huron
national weather service detroit/pontiac mi
343 am edt fri aug 14 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...high pressure, 30.00 inches, will dominate the region
through saturday. the next low pressure system will pass through
the region on saturday night bringing the next thunderstorm
chances.


lhz462>464-141545-
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-
343 am edt fri aug 14 2026

.today...light and variable winds becoming north 5 to 10 knots in
the late morning and afternoon. waves 2 feet or less. 
.tonight...northeast winds 5 to 10 knots. waves 1 to 3 feet. 
.saturday...east winds 5 to 10 knots. waves 2 feet or less. 
.saturday night...east winds 5 to 10 knots becoming southeast
10 to 15 knots in the late evening and overnight. a chance of
showers after midnight. waves 1 to 3 feet. 
.sunday...southeast winds 10 to 15 knots becoming southwest 5 to
10 knots late in the morning...then veering to the northwest late
in the afternoon increasing to 10 to 15 knots late in the
evening. a chance of showers in the morning...then showers likely
late in the morning. waves 1 to 3 feet building to 2 to 4 feet
late in the evening. 
.monday...north winds 10 to 15 knots becoming light and variable.
waves 2 to 4 feet subsiding to 1 to 3 feet . 
.tuesday...southwest winds 5 to 10 knots increasing to 10 to
15 knots by midnight. a chance of. waves 2 feet or less. 


$$

fzus63 kdtx 140743
glflh 
expires:202608141545;;162552

open lake forecast for lake huron
national weather service detroit/pontiac mi
343 am edt fri aug 14 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...high pressure, 30.00 inches, will dominate the region
through saturday. the next low pressure system will pass through
the region on saturday night bringing the next thunderstorm
chances.


lhz361-141545-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
343 am edt fri aug 14 2026

.today...north winds 5 to 10 knots in the morning becoming light
and variable. waves 2 feet or less. 
.tonight...light and variable winds. waves 2 feet or less. 
.saturday...southeast winds 5 to 10 knots becoming east 10 to
15 knots in the late morning and afternoon. waves 2 feet or less
building to 2 to 4 feet early in the afternoon. 
.saturday night...southeast winds 10 to 15 knots. a chance of
showers after midnight. waves 2 to 4 feet subsiding to 1 to
3 feet after midnight. 
.sunday...south winds 5 to 10 knots becoming southwest 10 to
15 knots late in the morning...then veering to the northwest late
in the afternoon. a chance of showers. waves 1 to 3 feet building
to 2 to 4 feet late in the afternoon. 
.monday...northwest winds 10 to 15 knots becoming west 5 to
10 knots. waves 1 to 3 feet. 
.tuesday...southwest winds 5 to 10 knots veering to the west by
midnight. a chance of showers by midnight. waves 2 feet or less. 


$$

fzus63 kdtx 140743
glflh 
expires:202608141545;;162553

open lake forecast for lake huron
national weather service detroit/pontiac mi
343 am edt fri aug 14 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...high pressure, 30.00 inches, will dominate the region
through saturday. the next low pressure system will pass through
the region on saturday night bringing the next thunderstorm
chances.


lhz362-363-141545-
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-
343 am edt fri aug 14 2026

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


$$

fzus63 kmkx 140753
glflm 
expires:202608141515;;162793

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
253 am cdt fri aug 14 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...

multiple rounds of storms are expected to cross the southern
portion of lake michigan into this weekend due to a front that
remains in place south of the lake. low pressure around 29.7 
inches over kansas will track to the northeast and east toward 
southern lake michigan into saturday. this low should help to 
increase winds and waves across the southern two thirds of lake 
michigan into saturday. beyond this system, a broad ridge of high 
pressure around 30.1 inches will push into the great lakes early 
next week before another potential system moves through the 
region middle of next week.


lmz080-671-673-675-777-779-872-874-876-878-141515-
lake michigan from michigan city in to st. joseph mi 5 nm
offshore to mid lake-
lake michigan from port washington to north point light wi 5 nm
offshore to mid lake-
lake michigan from north point light to wind point wi 5 nm
offshore to mid lake-
lake michigan from wind point wi to winthrop harbor il 5 nm
offshore to mid lake-
lake michigan from winthrop harbor to wilmette harbor il 5 nm
offshore to mid lake-
lake michigan from wilmette harbor il to michigan city in 5 nm
offshore to mid lake-
lake michigan from grand haven to whitehall mi 5 nm offshore to
mid lake-
lake michigan from holland to grand haven mi 5 nm offshore to mid
lake-
lake michigan from south haven to holland mi 5 nm offshore to mid
lake-
lake michigan from st. joseph to south haven mi 5 nm offshore to
mid lake-
253 am cdt fri aug 14 2026

port washington wi to whitehall mi south...

.today...east winds 10 to 15 kt becoming northeast 10 to 20 kt.
waves 2 to 4 ft. 
.tonight...northeast winds 10 to 20 kt veering to southeast.
chance of showers and slight chance of thunderstorms overnight.
waves 3 to 5 ft. 
.saturday...southeast winds 15 to 25 kt. chance of showers and
thunderstorms in the morning, then chance of showers in the
afternoon. waves 3 to 5 ft building to 4 to 6 ft occasionally to
8 ft. 
.saturday night...south winds 10 to 20 kt becoming southwest.
chance of showers in the evening, then showers likely overnight.
waves 2 to 4 ft subsiding to 1 to 3 ft. 
.sunday...west winds 10 to 20 kt becoming northwest. chance of
showers in the morning. waves 1 to 3 ft. 
.sunday night...north winds 10 to 15 kt increasing to 10 to
20 kt. waves 2 to 4 ft. 
.monday...north winds 10 to 15 kt increasing to 10 to 20 kt.
waves 2 to 4 ft. 
.tuesday...southwest winds 10 to 15 kt increasing to 10 to 20 kt.
waves 1 to 3 ft.  

$$

fzus63 kmkx 140753
glflm 
expires:202608141515;;162791

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
253 am cdt fri aug 14 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...

multiple rounds of storms are expected to cross the southern
portion of lake michigan into this weekend due to a front that
remains in place south of the lake. low pressure around 29.7 
inches over kansas will track to the northeast and east toward 
southern lake michigan into saturday. this low should help to 
increase winds and waves across the southern two thirds of lake 
michigan into saturday. beyond this system, a broad ridge of high 
pressure around 30.1 inches will push into the great lakes early 
next week before another potential system moves through the 
region middle of next week.


lmz261-362-364-563-141515-
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-
253 am cdt fri aug 14 2026

sturgeon bay wi to point betsie mi north...

.today...northeast winds 10 to 15 kt increasing to 10 to 20 kt.
waves 1 to 3 ft. 
.tonight...northeast winds 10 to 20 kt becoming east 10 to 15 kt.
waves 1 to 2 ft. 
.saturday...southeast winds 10 to 20 kt. waves 1 to 3 ft. 
.saturday night...southeast winds 10 to 20 kt veering to
southwest. chance of showers. waves 1 to 3 ft. 
.sunday...northwest winds 10 to 20 kt increasing to 15 to 25 kt.
chance of showers in the morning. waves 1 to 2 ft building to
1 to 3 ft. 
.sunday night...north winds 15 to 25 kt diminishing to 10 to
15 kt. waves 2 to 4 ft. 
.monday...northwest winds 10 to 15 kt becoming west 10 to 20 kt.
waves 1 to 2 ft. 
.tuesday...southwest winds to 30 kt increasing to gales to 35 kt.
waves 2 to 4 ft.  

$$

fzus63 kmkx 140753
glflm 
expires:202608141515;;162792

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
253 am cdt fri aug 14 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...

multiple rounds of storms are expected to cross the southern
portion of lake michigan into this weekend due to a front that
remains in place south of the lake. low pressure around 29.7 
inches over kansas will track to the northeast and east toward 
southern lake michigan into saturday. this low should help to 
increase winds and waves across the southern two thirds of lake 
michigan into saturday. beyond this system, a broad ridge of high 
pressure around 30.1 inches will push into the great lakes early 
next week before another potential system moves through the 
region middle of next week.


lmz366-565-567-669-868-870-141515-
lake michigan from point betsie to manistee mi 5 nm offshore to
mid lake-
lake michigan from sturgeon bay to two rivers wi 5 nm offshore to
mid lake-
lake michigan from two rivers to sheboygan wi 5 nm offshore to
mid lake-
lake michigan from sheboygan to port washington wi 5 nm offshore
to mid lake-
lake michigan from pentwater to manistee mi 5 nm offshore to mid
lake-
lake michigan from whitehall to pentwater mi 5 nm offshore to mid
lake-
253 am cdt fri aug 14 2026

sturgeon bay wi to point betsie mi south to port washington wi to
whitehall mi...

.today...northeast winds 10 to 15 kt increasing to 15 to 25 kt.
waves 3 to 5 ft. 
.tonight...northeast winds 10 to 20 kt veering to southeast.
waves 3 to 5 ft. 
.saturday...southeast winds 15 to 25 kt. chance of showers in the
afternoon. waves 3 to 5 ft building to 4 to 6 ft occasionally to
8 ft. 
.saturday night...south winds 10 to 20 kt becoming southwest.
chance of showers. waves 2 to 4 ft subsiding to 1 to 3 ft. 
.sunday...northwest winds 10 to 20 kt becoming north. waves 1 to
3 ft. 
.sunday night...north winds 10 to 20 kt. waves 2 to 4 ft. 
.monday...north winds 10 to 15 kt increasing to 10 to 20 kt.
waves 1 to 3 ft. 
.tuesday...southwest winds 10 to 20 kt increasing to 30 kt. waves
2 to 4 ft.  

$$

fzus63 kmqt 140801
glfls 
expires:202608142000;;163025

open lake forecast for lake superior
national weather service marquette mi
401 am edt fri aug 14 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...

this morning, 30.2 inch high pressure over northwest ontario settles 
over lake superior. tonight, a 29.9 inch low over the dakotas moves 
over the western end of the lake saturday night as the 30.2 inch 
high moves east of the lower great lakes. this low deepens to 29.7 
inches as it reaches the ontario/quebec line by sunday afternoon. 
sunday night into monday, a 30.1 inch high over the plains will 
weaken to 30.0 inches as it slides south of lake superior. by 
tuesday, this high will be fully south of the great lakes as a 29.5 
inch low over hudson bay extends a 29.9 inch trough over lake 
superior. ridging of around 30.0 inches returns to the lake by 
wednesday evening.




lsz162-142000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
401 am edt fri aug 14 2026 /301 am cdt fri aug 14 2026/

.early this morning...northeast winds 5 to 15 knots. waves calm
to 2 feet. 
.today...northeast winds 5 to 15 knots increasing to 15 to
25 knots in the afternoon. waves building to 2 to 4 feet. 
.tonight...northeast winds 15 to 25 knots diminishing to 10 to
20 knots after midnight, then becoming east 5 to 15 knots late.
waves subsiding to calm to 2 feet. 
.saturday...east winds 10 to 20 knots backing northeast late. a
chance of showers. waves calm to 2 feet. 
.saturday night...northeast winds 5 to 15 knots backing west
after midnight. a chance of showers and a slight chance of
thunderstorms through midnight. waves calm to 2 feet. 
.sunday...northwest winds 10 to 20 knots becoming west 5 to
15 knots by mid afternoon. waves calm to 2 feet. 
.sunday night...northwest winds 5 to 15 knots. waves calm to
2 feet. 
.monday...southwest winds 10 to 20 knots diminishing to 5 to
15 knots. a chance of showers. waves calm to 2 feet. 
.tuesday...west winds 5 to 15 knots veering north. a chance of
showers. waves calm to 2 feet. 

$$

fzus63 kmqt 140801
glfls 
expires:202608142000;;163026

open lake forecast for lake superior
national weather service marquette mi
401 am edt fri aug 14 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...

this morning, 30.2 inch high pressure over northwest ontario settles 
over lake superior. tonight, a 29.9 inch low over the dakotas moves 
over the western end of the lake saturday night as the 30.2 inch 
high moves east of the lower great lakes. this low deepens to 29.7 
inches as it reaches the ontario/quebec line by sunday afternoon. 
sunday night into monday, a 30.1 inch high over the plains will 
weaken to 30.0 inches as it slides south of lake superior. by 
tuesday, this high will be fully south of the great lakes as a 29.5 
inch low over hudson bay extends a 29.9 inch trough over lake 
superior. ridging of around 30.0 inches returns to the lake by 
wednesday evening.




lsz263-142000-
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-
401 am edt fri aug 14 2026

.early this morning...northeast winds 5 to 15 knots. waves calm
to 2 feet. 
.today...northeast winds 5 to 15 knots increasing to 10 to
20 knots in the afternoon, then becoming east 15 to 25 knots
late. waves building to 1 to 3 feet. 
.tonight...east winds 15 to 25 knots diminishing to 5 to 15 knots
after midnight. waves subsiding to calm to 2 feet. 
.saturday...east winds 5 to 15 knots. a chance of showers. waves
calm to 2 feet. 
.saturday night...south winds 5 to 15 knots veering west after
midnight. showers likely and a slight chance of thunderstorms
through midnight, then a slight chance of showers after midnight.
waves calm to 2 feet. 
.sunday...northwest winds 10 to 20 knots backing west by mid
afternoon. waves calm to 2 feet. 
.sunday night...west winds 5 to 15 knots veering northwest after
midnight. waves calm to 2 feet. 
.monday...southwest winds 15 to 25 knots diminishing to 10 to
20 knots. a chance of showers. waves building to 1 to 3 feet,
then subsiding to calm to 2 feet. 
.tuesday...west winds 10 to 20 knots becoming north 5 to
15 knots. a chance of showers. waves calm to 2 feet. 

$$

fzus63 kmqt 140801
glfls 
expires:202608142000;;163027

open lake forecast for lake superior
national weather service marquette mi
401 am edt fri aug 14 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...

this morning, 30.2 inch high pressure over northwest ontario settles 
over lake superior. tonight, a 29.9 inch low over the dakotas moves 
over the western end of the lake saturday night as the 30.2 inch 
high moves east of the lower great lakes. this low deepens to 29.7 
inches as it reaches the ontario/quebec line by sunday afternoon. 
sunday night into monday, a 30.1 inch high over the plains will 
weaken to 30.0 inches as it slides south of lake superior. by 
tuesday, this high will be fully south of the great lakes as a 29.5 
inch low over hudson bay extends a 29.9 inch trough over lake 
superior. ridging of around 30.0 inches returns to the lake by 
wednesday evening.




lsz264-142000-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
401 am edt fri aug 14 2026

.early this morning...northeast winds less than 10 knots. waves
calm to 2 feet. 
.today...northeast winds 5 to 15 knots veering east late. waves
calm to 2 feet. 
.tonight...southeast winds 5 to 15 knots backing east after
midnight, then veering southeast late. waves calm to 2 feet. 
.saturday...southeast winds 5 to 15 knots backing east in the
afternoon, then increasing to 10 to 20 knots late. a slight
chance of showers. waves calm to 2 feet. 
.saturday night...southeast winds 10 to 20 knots becoming west
5 to 15 knots after midnight. showers likely and a slight chance
of thunderstorms through midnight, then a slight chance of
showers after midnight. waves building to 1 to 3 feet, then
subsiding to calm to 2 feet. 
.sunday...northwest winds 10 to 20 knots backing west by mid
afternoon. waves calm to 2 feet. 
.sunday night...west winds 5 to 15 knots. waves calm to 2 feet. 
.monday...southwest winds 10 to 20 knots. a chance of showers.
waves calm to 2 feet. 
.tuesday...west winds 10 to 20 knots becoming north 5 to
15 knots. a chance of showers. waves calm to 2 feet. 

$$

fzus63 kmqt 140801
glfls 
expires:202608142000;;163028

open lake forecast for lake superior
national weather service marquette mi
401 am edt fri aug 14 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...

this morning, 30.2 inch high pressure over northwest ontario settles 
over lake superior. tonight, a 29.9 inch low over the dakotas moves 
over the western end of the lake saturday night as the 30.2 inch 
high moves east of the lower great lakes. this low deepens to 29.7 
inches as it reaches the ontario/quebec line by sunday afternoon. 
sunday night into monday, a 30.1 inch high over the plains will 
weaken to 30.0 inches as it slides south of lake superior. by 
tuesday, this high will be fully south of the great lakes as a 29.5 
inch low over hudson bay extends a 29.9 inch trough over lake 
superior. ridging of around 30.0 inches returns to the lake by 
wednesday evening.




lsz265-142000-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
401 am edt fri aug 14 2026

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

$$

fzus63 kmqt 140801
glfls 
expires:202608142000;;163029

open lake forecast for lake superior
national weather service marquette mi
401 am edt fri aug 14 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...

this morning, 30.2 inch high pressure over northwest ontario settles 
over lake superior. tonight, a 29.9 inch low over the dakotas moves 
over the western end of the lake saturday night as the 30.2 inch 
high moves east of the lower great lakes. this low deepens to 29.7 
inches as it reaches the ontario/quebec line by sunday afternoon. 
sunday night into monday, a 30.1 inch high over the plains will 
weaken to 30.0 inches as it slides south of lake superior. by 
tuesday, this high will be fully south of the great lakes as a 29.5 
inch low over hudson bay extends a 29.9 inch trough over lake 
superior. ridging of around 30.0 inches returns to the lake by 
wednesday evening.




lsz266-142000-
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-
401 am edt fri aug 14 2026

.early this morning...north winds 5 to 15 knots. waves calm to
2 feet. 
.today...northeast winds 5 to 15 knots backing north in the
afternoon. waves calm to 2 feet. 
.tonight...north winds 5 to 15 knots veering east after midnight.
waves calm to 2 feet. 
.saturday...southeast winds 5 to 15 knots becoming east 10 to
20 knots in the afternoon, then veering southeast late. a slight
chance of showers by mid afternoon. waves building to 1 to
3 feet. 
.saturday night...southeast winds 10 to 20 knots veering
southwest after midnight. showers and a slight chance of
thunderstorms. waves 1 to 3 feet. 
.sunday...northwest winds 20 to 30 knots. waves building to 3 to
6 feet occasionally to 8 feet, then subsiding to 2 to 4 feet. 
.sunday night...northwest winds 10 to 20 knots. waves subsiding
to calm to 2 feet. 
.monday...west winds 5 to 15 knots becoming south 10 to 20 knots.
waves calm to 2 feet. 
.tuesday...west winds 10 to 20 knots becoming north 5 to
15 knots. a chance of showers. waves calm to 2 feet. 

$$

fzus63 kmqt 140801
glfls 
expires:202608142000;;163030

open lake forecast for lake superior
national weather service marquette mi
401 am edt fri aug 14 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...

this morning, 30.2 inch high pressure over northwest ontario settles 
over lake superior. tonight, a 29.9 inch low over the dakotas moves 
over the western end of the lake saturday night as the 30.2 inch 
high moves east of the lower great lakes. this low deepens to 29.7 
inches as it reaches the ontario/quebec line by sunday afternoon. 
sunday night into monday, a 30.1 inch high over the plains will 
weaken to 30.0 inches as it slides south of lake superior. by 
tuesday, this high will be fully south of the great lakes as a 29.5 
inch low over hudson bay extends a 29.9 inch trough over lake 
superior. ridging of around 30.0 inches returns to the lake by 
wednesday evening.




lsz267-142000-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
401 am edt fri aug 14 2026

.early this morning...north winds 5 to 15 knots. waves calm to
2 feet. 
.today...north winds 5 to 15 knots backing northwest late. waves
calm to 2 feet. 
.tonight...northwest winds 5 to 15 knots veering north after
midnight, then veering east late. waves calm to 2 feet. 
.saturday...southeast winds 10 to 20 knots backing east in the
afternoon. waves calm to 2 feet. 
.saturday night...southeast winds 15 to 25 knots becoming south
10 to 20 knots after midnight. a chance of showers through
midnight, then showers likely and a slight chance of
thunderstorms after midnight. waves building to 1 to 3 feet. 
.sunday...west winds 10 to 20 knots becoming northwest 15 to
25 knots by mid afternoon. waves subsiding to calm to 2 feet,
then building to 2 to 4 feet. 
.sunday night...northwest winds 10 to 20 knots. waves subsiding
to calm to 2 feet. 
.monday...west winds 5 to 15 knots backing south. waves calm to
2 feet. 
.tuesday...west winds 10 to 20 knots veering north. a chance of
showers. waves building to 1 to 3 feet, then subsiding to calm to
2 feet. 

$$