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 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 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 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 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. 

$$