fzus63 kdtx 121942
glflh 
expires:202608130345;;074392

open lake forecast for lake huron
national weather service detroit/pontiac mi
342 pm edt wed aug 12 2026

for waters beyond five nautical miles off shore on lake huron

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

.synopsis...a quasi-stationary front holds over the southern great
lakes through thursday, bringing waves of showers and
thunderstorms across the waters. high pressure, 30.00 inches,
will dominate the region to the north of the front. light winds
will be variable over the next 2 days, but maintain an overall
northerly trend over lake huron and southerly toward western lake
erie.


lhz361-130345-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
342 pm edt wed aug 12 2026

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


$$

fzus63 kdtx 121942
glflh 
expires:202608130345;;074393

open lake forecast for lake huron
national weather service detroit/pontiac mi
342 pm edt wed aug 12 2026

for waters beyond five nautical miles off shore on lake huron

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

.synopsis...a quasi-stationary front holds over the southern great
lakes through thursday, bringing waves of showers and
thunderstorms across the waters. high pressure, 30.00 inches,
will dominate the region to the north of the front. light winds
will be variable over the next 2 days, but maintain an overall
northerly trend over lake huron and southerly toward western lake
erie.


lhz362-363-130345-
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-
342 pm edt wed aug 12 2026

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


$$

fzus63 kdtx 121942
glflh 
expires:202608130345;;074394

open lake forecast for lake huron
national weather service detroit/pontiac mi
342 pm edt wed aug 12 2026

for waters beyond five nautical miles off shore on lake huron

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

.synopsis...a quasi-stationary front holds over the southern great
lakes through thursday, bringing waves of showers and
thunderstorms across the waters. high pressure, 30.00 inches,
will dominate the region to the north of the front. light winds
will be variable over the next 2 days, but maintain an overall
northerly trend over lake huron and southerly toward western lake
erie.


lhz462>464-130345-
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-
342 pm edt wed aug 12 2026

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


$$

fzus63 kmkx 121953
glflm 
expires:202608130315;;074671

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
253 pm cdt wed aug 12 2026

for waters beyond five nautical miles of shore on lake michigan.

waves are provided as a range of significant wave heights, which
is the average of the highest 1/3 of the wave, along with the
average height of the highest 10% of the waves which will
occasionally be encountered.

.synopsis...

a stalled frontal boundary just to the south of lake michigan will 
remain into mid day thursday before retreating south toward the ohio 
river valley. periodic rain, storms and patchy fog will be 
possible across the southern half of the lake until this front 
moves south. light and variable winds are expected across the lake
into thursday night. 

high pressure around 30.3 inches is expected to build down from 
ontario into the eastern great lakes thursday night into friday. 
northeast to east winds will increase across the lake becoming 
breezy as the high pressure builds in and a low pressure system 
develops across the central plains. as the low pressure around 29.9 
inches moves northeast toward the great lakes region, the high 
pressure will be slowly moving northeast toward the new england 
states. winds will turn to southeasterly and remain breezy saturday 
ahead of the approaching low. this low is expected to track 
across the lake late saturday into sunday. rain and thunderstorms 
will be possible across the lake saturday into saturday night. as 
the low exits to the northeast sunday, high pressure around 30.2 
inches is expected to move in from the northern plains for early 
next week. 


lmz261-362-364-366-563-565-567-868-130315-
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-
253 pm cdt wed aug 12 2026

sheboygan wi to pentwater mi north...

.tonight...north winds 10 to 15 kt becoming northeast less than
10 kt. waves 1 ft or less. 
.thursday...northeast winds 5 to 10 kt increasing to 10 to 15 kt.
waves nearly calm. 
.thursday night...northeast winds 5 to 10 kt increasing to 10 to
15 kt. waves 1 to 2 ft. 
.friday...northeast winds 10 to 15 kt increasing to 10 to 20 kt.
waves 1 to 3 ft. 
.friday night...northeast winds 10 to 20 kt becoming east. waves
2 to 4 ft. 
.saturday...southeast winds 15 to 25 kt. waves 2 to 4 ft. 
.saturday night...southeast winds 10 to 20 kt becoming southwest.
chance of showers and thunderstorms. waves 1 to 3 ft. 
.sunday...northwest winds 10 to 20 kt becoming north 15 to 25 kt.
waves 1 to 3 ft. 
.monday...north winds 10 to 15 kt becoming west 10 to 20 kt.
waves 1 to 2 ft.  

$$

fzus63 kmkx 121953
glflm 
expires:202608130315;;074672

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
253 pm cdt wed aug 12 2026

for waters beyond five nautical miles of shore on lake michigan.

waves are provided as a range of significant wave heights, which
is the average of the highest 1/3 of the wave, along with the
average height of the highest 10% of the waves which will
occasionally be encountered.

.synopsis...

a stalled frontal boundary just to the south of lake michigan will 
remain into mid day thursday before retreating south toward the ohio 
river valley. periodic rain, storms and patchy fog will be 
possible across the southern half of the lake until this front 
moves south. light and variable winds are expected across the lake
into thursday night. 

high pressure around 30.3 inches is expected to build down from 
ontario into the eastern great lakes thursday night into friday. 
northeast to east winds will increase across the lake becoming 
breezy as the high pressure builds in and a low pressure system 
develops across the central plains. as the low pressure around 29.9 
inches moves northeast toward the great lakes region, the high 
pressure will be slowly moving northeast toward the new england 
states. winds will turn to southeasterly and remain breezy saturday 
ahead of the approaching low. this low is expected to track 
across the lake late saturday into sunday. rain and thunderstorms 
will be possible across the lake saturday into saturday night. as 
the low exits to the northeast sunday, high pressure around 30.2 
inches is expected to move in from the northern plains for early 
next week. 


lmz080-669-671-673-675-777-779-870-872-874-876-878-130315-
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-
253 pm cdt wed aug 12 2026

sheboygan wi to pentwater mi south...

.tonight...north winds 5 to 10 kt becoming northeast. patchy fog
overnight. waves 1 ft or less. 
.thursday...east winds 5 to 10 kt becoming northeast. patchy fog
in the morning. chance of showers in the afternoon. waves 1 ft or
less. 
.thursday night...northeast winds 5 to 10 kt becoming east 10 to
15 kt. chance of showers overnight. waves 1 to 2 ft. 
.friday...east winds 10 to 15 kt becoming northeast 10 to 20 kt.
chance of showers in the morning. waves 1 to 3 ft. 
.friday night...northeast winds 10 to 20 kt becoming east. chance
of showers and thunderstorms in the evening, then chance of
showers overnight. waves 2 to 4 ft. 
.saturday...southeast winds 15 to 25 kt. chance of showers. waves
3 to 5 ft. 
.saturday night...south winds 10 to 20 kt becoming southwest
10 to 15 kt. chance of showers and thunderstorms. waves 1 to
3 ft. 
.sunday...northwest winds 10 to 20 kt becoming north. chance of
showers and thunderstorms. waves 1 to 3 ft. 
.monday...north winds 10 to 20 kt. waves 2 to 4 ft.  

$$

fzus63 kmqt 122001
glfls 
expires:202608130800;;074832

open lake forecast for lake superior
national weather service marquette mi
401 pm edt wed aug 12 2026

for waters beyond 5 nautical miles of shore on lake superior.

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

.synopsis...

this afternoon, weak 29.8 inch ridging over lake superior separates 
a 29.5 inch low pressure over the gulf of st. lawrence and a plains 
low of 29.7 inches. this pattern holds, leading to calm open lake 
conditions, until thursday morning, when a 30.2 inch high over the 
canadian rockies begins to extend stronger ridging over lake 
superior before eventually becoming centered over the lake at 30.2 
inches friday afternoon. a 29.9 inch trough then moves over the 
western end of the lake saturday afternoon as the 30.2 inch high 
moves over the lower great lakes. this trough consolidates to a 29.8 
inch low as it passes over lake superior, reaching ontario by sunday 
afternoon, with 30.1 inch ridging over lake superior to follow.




lsz162-130800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
401 pm edt wed aug 12 2026 /301 pm cdt wed aug 12 2026/

.late this afternoon...south winds 5 to 15 knots. waves calm to
2 feet. 
.tonight...north winds 5 to 15 knots. patchy fog after midnight.
a slight chance of showers after midnight. waves calm to 2 feet. 
.thursday...northeast winds 5 to 15 knots veering east in the
afternoon. a slight chance of showers through early afternoon.
waves calm to 2 feet. 
.thursday night...northeast winds 5 to 15 knots. waves calm to
2 feet. 
.friday...northeast winds 10 to 20 knots increasing to 15 to
25 knots by mid afternoon. waves building to 1 to 3 feet. 
.friday night...northeast winds 15 to 25 knots diminishing to
5 to 15 knots after midnight. waves subsiding to calm to 2 feet. 
.saturday...east winds 10 to 20 knots backing northeast by mid
afternoon. a chance of showers. waves calm to 2 feet. 
.saturday night...north winds 5 to 15 knots backing northwest
after midnight. a chance of showers. waves calm to 2 feet. 
.sunday...west winds 5 to 15 knots veering northwest. waves calm
to 2 feet. 
.monday...southwest winds 5 to 15 knots veering west. waves calm
to 2 feet. 

$$

fzus63 kmqt 122001
glfls 
expires:202608130800;;074833

open lake forecast for lake superior
national weather service marquette mi
401 pm edt wed aug 12 2026

for waters beyond 5 nautical miles of shore on lake superior.

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

.synopsis...

this afternoon, weak 29.8 inch ridging over lake superior separates 
a 29.5 inch low pressure over the gulf of st. lawrence and a plains 
low of 29.7 inches. this pattern holds, leading to calm open lake 
conditions, until thursday morning, when a 30.2 inch high over the 
canadian rockies begins to extend stronger ridging over lake 
superior before eventually becoming centered over the lake at 30.2 
inches friday afternoon. a 29.9 inch trough then moves over the 
western end of the lake saturday afternoon as the 30.2 inch high 
moves over the lower great lakes. this trough consolidates to a 29.8 
inch low as it passes over lake superior, reaching ontario by sunday 
afternoon, with 30.1 inch ridging over lake superior to follow.




lsz263-130800-
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 pm edt wed aug 12 2026

.late this afternoon...southwest winds 5 to 15 knots. waves calm
to 2 feet. 
.tonight...west winds less than 10 knots veering north after
midnight. waves calm to 2 feet. 
.thursday...north winds less than 10 knots becoming northeast
5 to 15 knots in the afternoon, then veering east late. a slight
chance of showers through early afternoon. waves calm to 2 feet. 
.thursday night...northeast winds less than 10 knots increasing
to 5 to 15 knots late. waves calm to 2 feet. 
.friday...northeast winds 5 to 15 knots increasing to 15 to
25 knots by mid afternoon. waves calm to 2 feet. 
.friday night...east winds 10 to 20 knots diminishing to 5 to
15 knots after midnight. waves calm to 2 feet. 
.saturday...east winds 5 to 15 knots. waves calm to 2 feet. 
.saturday night...northeast winds 5 to 15 knots backing northwest
after midnight. a chance of showers. waves calm to 2 feet. 
.sunday...west winds 5 to 15 knots. waves calm to 2 feet. 
.monday...west winds 10 to 20 knots backing southwest. waves calm
to 2 feet. 

$$

fzus63 kmqt 122001
glfls 
expires:202608130800;;074834

open lake forecast for lake superior
national weather service marquette mi
401 pm edt wed aug 12 2026

for waters beyond 5 nautical miles of shore on lake superior.

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

.synopsis...

this afternoon, weak 29.8 inch ridging over lake superior separates 
a 29.5 inch low pressure over the gulf of st. lawrence and a plains 
low of 29.7 inches. this pattern holds, leading to calm open lake 
conditions, until thursday morning, when a 30.2 inch high over the 
canadian rockies begins to extend stronger ridging over lake 
superior before eventually becoming centered over the lake at 30.2 
inches friday afternoon. a 29.9 inch trough then moves over the 
western end of the lake saturday afternoon as the 30.2 inch high 
moves over the lower great lakes. this trough consolidates to a 29.8 
inch low as it passes over lake superior, reaching ontario by sunday 
afternoon, with 30.1 inch ridging over lake superior to follow.




lsz264-130800-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
401 pm edt wed aug 12 2026

.late this afternoon...southwest winds less than 10 knots. waves
calm to 2 feet. 
.tonight...west winds less than 10 knots veering northwest late.
waves calm to 2 feet. 
.thursday...northwest winds less than 10 knots backing southwest
late. waves calm to 2 feet. 
.thursday night...southwest winds less than 10 knots veering
north after midnight, then veering northeast late. waves calm to
2 feet. 
.friday...northeast winds 5 to 15 knots veering east by mid
afternoon. waves calm to 2 feet. 
.friday night...east winds 5 to 15 knots veering southeast after
midnight. waves calm to 2 feet. 
.saturday...southeast winds 5 to 15 knots. waves calm to 2 feet. 
.saturday night...southeast winds 5 to 15 knots veering west
after midnight. a chance of showers. waves calm to 2 feet. 
.sunday...northwest winds 5 to 15 knots backing west. waves calm
to 2 feet. 
.monday...west winds 5 to 15 knots backing southwest. waves calm
to 2 feet. 

$$

fzus63 kmqt 122001
glfls 
expires:202608130800;;074835

open lake forecast for lake superior
national weather service marquette mi
401 pm edt wed aug 12 2026

for waters beyond 5 nautical miles of shore on lake superior.

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

.synopsis...

this afternoon, weak 29.8 inch ridging over lake superior separates 
a 29.5 inch low pressure over the gulf of st. lawrence and a plains 
low of 29.7 inches. this pattern holds, leading to calm open lake 
conditions, until thursday morning, when a 30.2 inch high over the 
canadian rockies begins to extend stronger ridging over lake 
superior before eventually becoming centered over the lake at 30.2 
inches friday afternoon. a 29.9 inch trough then moves over the 
western end of the lake saturday afternoon as the 30.2 inch high 
moves over the lower great lakes. this trough consolidates to a 29.8 
inch low as it passes over lake superior, reaching ontario by sunday 
afternoon, with 30.1 inch ridging over lake superior to follow.




lsz265-130800-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
401 pm edt wed aug 12 2026

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

$$

fzus63 kmqt 122001
glfls 
expires:202608130800;;074836

open lake forecast for lake superior
national weather service marquette mi
401 pm edt wed aug 12 2026

for waters beyond 5 nautical miles of shore on lake superior.

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

.synopsis...

this afternoon, weak 29.8 inch ridging over lake superior separates 
a 29.5 inch low pressure over the gulf of st. lawrence and a plains 
low of 29.7 inches. this pattern holds, leading to calm open lake 
conditions, until thursday morning, when a 30.2 inch high over the 
canadian rockies begins to extend stronger ridging over lake 
superior before eventually becoming centered over the lake at 30.2 
inches friday afternoon. a 29.9 inch trough then moves over the 
western end of the lake saturday afternoon as the 30.2 inch high 
moves over the lower great lakes. this trough consolidates to a 29.8 
inch low as it passes over lake superior, reaching ontario by sunday 
afternoon, with 30.1 inch ridging over lake superior to follow.




lsz266-130800-
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 pm edt wed aug 12 2026

.late this afternoon...northwest 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. 
.thursday...northwest winds 5 to 15 knots. waves calm to 2 feet. 
.thursday night...northwest winds 5 to 15 knots veering north
late. waves calm to 2 feet. 
.friday...northeast winds 5 to 15 knots. waves calm to 2 feet. 
.friday night...east winds 5 to 15 knots veering southeast after
midnight. waves calm to 2 feet. 
.saturday...southeast winds 10 to 20 knots. waves calm to 2 feet.
.saturday night...south winds 10 to 20 knots veering west after
midnight. a chance of showers. waves calm to 2 feet. 
.sunday...northwest winds 10 to 20 knots. waves building to 1 to
3 feet, then subsiding to calm to 2 feet. 
.monday...west winds 5 to 15 knots backing southwest. waves calm
to 2 feet. 

$$

fzus63 kmqt 122001
glfls 
expires:202608130800;;074837

open lake forecast for lake superior
national weather service marquette mi
401 pm edt wed aug 12 2026

for waters beyond 5 nautical miles of shore on lake superior.

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

.synopsis...

this afternoon, weak 29.8 inch ridging over lake superior separates 
a 29.5 inch low pressure over the gulf of st. lawrence and a plains 
low of 29.7 inches. this pattern holds, leading to calm open lake 
conditions, until thursday morning, when a 30.2 inch high over the 
canadian rockies begins to extend stronger ridging over lake 
superior before eventually becoming centered over the lake at 30.2 
inches friday afternoon. a 29.9 inch trough then moves over the 
western end of the lake saturday afternoon as the 30.2 inch high 
moves over the lower great lakes. this trough consolidates to a 29.8 
inch low as it passes over lake superior, reaching ontario by sunday 
afternoon, with 30.1 inch ridging over lake superior to follow.




lsz267-130800-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
401 pm edt wed aug 12 2026

.late this afternoon...northwest winds 5 to 15 knots. waves calm
to 2 feet. 
.tonight...northwest winds 5 to 15 knots backing west late. waves
calm to 2 feet. 
.thursday...northwest winds 5 to 15 knots. waves calm to 2 feet. 
.thursday night...northwest winds 5 to 15 knots veering north
late. waves calm to 2 feet. 
.friday...north winds 5 to 15 knots. waves calm to 2 feet. 
.friday night...northeast winds 5 to 15 knots veering southeast
after midnight. waves calm to 2 feet. 
.saturday...southeast winds 10 to 20 knots. waves calm to 2 feet.
.saturday night...south winds 10 to 20 knots. a chance of
showers. waves calm to 2 feet. 
.sunday...northwest winds 10 to 20 knots. waves calm to 2 feet. 
.monday...west winds 5 to 15 knots backing southwest. waves calm
to 2 feet. 

$$