fzus63 kdtx 071441
glflh 
expires:202601072245;;945564

open lake forecast for lake huron
national weather service detroit/pontiac mi
941 am est wed jan 7 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, 29.90 inches, tracks through the
central great lakes this evening. moderate to strong southerly
winds thursday and friday will lead to warming temperatures and
rain showers late thursday through friday morning.


lhz361-362-072245-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
lake huron from presque isle light to sturgeon point mi beyond
5nm off shore-
941 am est wed jan 7 2026

.rest of today...west winds 10 to 15 knots. waves 1 to 3 feet. 
.tonight...southwest winds 10 to 15 knots. waves 1 to 3 feet
building to 2 to 4 feet after midnight. 
.thursday...south winds 10 to 15 knots. waves 3 to 5 feet. 
.thursday night...south winds 10 to 15 knots becoming southeast
15 to 20 knots in the late evening and overnight. rain. waves
4 to 6 feet building to 6 to 9 feet after midnight. waves
occasionally around 12 feet. 
.friday...south winds 15 to 20 knots veering to the west late in
the morning...then veering to the northwest late in the afternoon
becoming northwest 15 to 20 knots late in the evening. a chance
of rain. waves 5 to 7 feet. waves occasionally around 10 feet. 
.saturday...east winds 15 to 20 knots becoming northeast 20 to
25 knots . a chance of rain and snow early in the morning...then
snow likely until early evening. a chance of snow by midnight.
waves 3 to 5 feet building to 6 to 9 feet. waves occasionally
around 12 feet. 
.sunday...west winds 20 to 25 knots with gusts to around 30 knots
veering to the northwest with gusts to around 30 knots early in
the evening...then decreasing to 15 to 20 knots by midnight. a
chance of snow early in the morning. waves 8 to 12 feet. waves
occasionally around 15 feet. 


$$

fzus63 kdtx 071441
glflh 
expires:202601072245;;945565

open lake forecast for lake huron
national weather service detroit/pontiac mi
941 am est wed jan 7 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, 29.90 inches, tracks through the
central great lakes this evening. moderate to strong southerly
winds thursday and friday will lead to warming temperatures and
rain showers late thursday through friday morning.


lhz363-462>464-072245-
lake huron from sturgeon point to alabaster mi beyond 5nm off
shore-
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-
941 am est wed jan 7 2026

.rest of today...west winds 5 to 10 knots becoming southwest
10 to 15 knots late in the afternoon. patchy drizzle and fog.
waves 1 to 3 feet. 
.tonight...southwest winds 10 to 15 knots. waves 1 to 3 feet
building to 2 to 4 feet early in the morning. 
.thursday...south winds 10 to 15 knots. waves 2 to 4 feet. 
.thursday night...south winds 15 to 20 knots becoming southeast
20 to 25 knots with gusts to around 30 knots in the late evening
and overnight. rain. waves 3 to 5 feet building to 6 to 9 feet in
the late evening and overnight. waves occasionally around
12 feet. 
.friday...southwest winds 15 to 20 knots with gusts to around
30 knots becoming northwest 10 to 15 knots late in the afternoon.
a chance of rain. waves 5 to 7 feet. waves occasionally around
10 feet. 
.saturday...east winds 10 to 15 knots increasing to 15 to
20 knots until early evening...then becoming southwest 20 to
25 knots with gusts to 35 knot gales by midnight. rain likely and
a chance of snow. waves 3 to 5 feet building to 6 to 9 feet .
waves occasionally around 12 feet. 
.sunday...west winds to 30 knots with gusts to 35 knot gales
becoming northwest 20 to 25 knots with gusts to around 30 knots
early in the evening...then decreasing to 15 to 20 knots by
midnight. a chance of snow early in the morning. waves 8 to
12 feet. waves occasionally around 15 feet. 


$$

fzus63 kmkx 071501
glflm 
expires:202601072230;;946345

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
901 am cst wed jan 7 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 high pressure ridge averaging 29.8 inches will slide across the
upper great lakes today. we cannot rule out seeing some pockets 
of dense marine fog at times given the relatively warm air over
the cooler waters. look for southerly winds to increase as low 
pressure of 29.5 inches develops over the northern plains. that 
trough will lift into northern ontario thursday, but a stronger 
low of 29.3 inches will track across central lake michigan 
thursday night. expect breezy southerly winds over the south half 
of lm. the low will reach southern quebec on friday, and breezy 
northwest to west winds will develop behind it. 

friday night, low pressure over the mid mississippi river valley
will strengthen to 29.4 inches as it lifts into the eastern great
lakes saturday evening. expect stronger northerly winds with the 
potential to see some gales over the open waters of lake michigan
through sunday morning.


lmz080-669-671-673-675-777-779-870-872-874-876-878-072230-
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-
901 am cst wed jan 7 2026

sheboygan wi to pentwater mi south...

.rest of today...west winds 10 to 15 kt becoming south 10 to
20 kt. patchy fog through mid morning, with a few pockets of dense
fog possible. waves 2 to 4 ft.
.tonight...south winds 10 to 20 kt. waves 3 to 5 ft. 
.thursday...south winds 10 to 20 kt becoming southeast. rain in
the afternoon. waves 4 to 6 ft occasionally to 8 ft. 
.thursday night...south winds 15 to 25 kt veering to west. rain
in the evening, then rain likely overnight. waves 3 to 5 ft. 
.friday...northwest winds 10 to 20 kt becoming north. chance of
rain in the morning. waves 3 to 5 ft. 
.friday night...northeast winds 10 to 20 kt becoming east. chance
of rain. waves 4 to 6 ft occasionally to 8 ft. 
.saturday...east winds 15 to 25 kt veering to west to 30 kt. rain
and snow likely. waves 6 to 9 ft occasionally to 12 ft building
to 8 to 11 ft occasionally to 14 ft. 
.sunday...northwest gales to 35 kt diminishing to 15 to 25 kt.
chance of snow. waves 8 to 11 ft occasionally to 14 ft subsiding
to 5 to 8 ft occasionally to 10 ft.  

$$

fzus63 kmkx 071501
glflm 
expires:202601072230;;946344

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
901 am cst wed jan 7 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 high pressure ridge averaging 29.8 inches will slide across the
upper great lakes today. we cannot rule out seeing some pockets 
of dense marine fog at times given the relatively warm air over
the cooler waters. look for southerly winds to increase as low 
pressure of 29.5 inches develops over the northern plains. that 
trough will lift into northern ontario thursday, but a stronger 
low of 29.3 inches will track across central lake michigan 
thursday night. expect breezy southerly winds over the south half 
of lm. the low will reach southern quebec on friday, and breezy 
northwest to west winds will develop behind it. 

friday night, low pressure over the mid mississippi river valley
will strengthen to 29.4 inches as it lifts into the eastern great
lakes saturday evening. expect stronger northerly winds with the 
potential to see some gales over the open waters of lake michigan
through sunday morning.


lmz261-362-364-366-563-565-567-868-072230-
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-
901 am cst wed jan 7 2026

sheboygan wi to pentwater mi north...

.rest of today...west winds 10 to 15 kt becoming southwest 10 to
20 kt. patchy fog through mid morning, a few pockets of dense fog
possible. waves 2 to 4 ft.
.tonight...southwest winds 10 to 20 kt becoming south. waves 3 to
5 ft. 
.thursday...south winds 10 to 20 kt. chance of rain in the
afternoon. waves 4 to 6 ft occasionally to 8 ft. 
.thursday night...east winds 10 to 20 kt backing to north. rain.
waves 3 to 5 ft. 
.friday...northwest winds 15 to 25 kt becoming north. chance of
rain in the morning. waves 3 to 5 ft. 
.friday night...northeast winds 10 to 15 kt becoming east 10 to
20 kt. waves 3 to 5 ft. 
.saturday...east winds 15 to 25 kt becoming northeast to 30 kt.
snow likely. waves 4 to 6 ft occasionally to 8 ft building to
6 to 9 ft occasionally to 12 ft. 
.sunday...northwest winds to 30 kt. waves 6 to 9 ft occasionally
to 12 ft subsiding to 4 to 6 ft occasionally to 8 ft.  

$$

fzus63 kmqt 071500
glfls 
expires:202601072100;;946231

open lake forecast for lake superior
national weather service marquette mi
1000 am est wed jan 7 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...

weak ridging of 29.7 persists over lake superior today while 29.6 
inch low pressure broadly organizes over the plains and 30.0 inch 
high pressure resides over the ohio river valley. by thursday 
morning, the high will build to 30.2 inches over the mid atlantic 
states while a 29.6 inch low moves from manitoba to northern 
ontario. meanwhile, a developing 29.4 inch colorado low moves to the 
upper mississippi valley by thursday evening. the low reaches 
northern lower michigan friday morning and then quebec by the 
evening hours with broad high pressure over the high plains of at 
least 30.6 inches in its wake. friday night through saturday, a low 
will deepen from 29.9 to 29.7 inches as it moves from the lower 
mississippi valley to the lower great lakes, reaching southern 
quebec sunday morning as 30.5 inch high pressure overspreads the 
plains. the high slides south of the great lakes on monday while a 
29.6 inch low moves into northern ontario.



lsz264-072100-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
1000 am est wed jan 7 2026

.rest of today...southwest winds 10 to 20 knots. waves 1 to
3 feet building to 2 to 4 feet. 
.tonight...southwest winds 5 to 15 knots. waves subsiding to calm
to 2 feet, then building to 1 to 3 feet. 
.thursday...southwest winds 5 to 15 knots veering west by mid
afternoon. patchy fog in the morning. waves subsiding to calm to
2 feet. 
.thursday night...north winds 10 to 20 knots increasing to 15 to
25 knots after midnight. a slight chance of rain showers. a
slight chance of snow showers after midnight. waves building to
3 to 5 feet occasionally to 7 feet. 
.friday...north winds 20 to 30 knots diminishing to 15 to
25 knots in the afternoon. waves building to 3 to 6 feet
occasionally to 8 feet, then subsiding to 2 to 4 feet. 
.friday night...north winds 5 to 15 knots veering east after
midnight. waves subsiding to 1 to 3 feet. 
.saturday...east gales to 35 knots becoming north gales to
40 knots. a chance of snow showers. freezing spray. waves
building to 7 to 11 feet occasionally to 14 feet. 
.sunday...north gales to 35 knots becoming west 15 to 25 knots.
freezing spray. waves subsiding to 2 to 4 feet, then building to
3 to 6 feet occasionally to 8 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 071500
glfls 
expires:202601072100;;946232

open lake forecast for lake superior
national weather service marquette mi
1000 am est wed jan 7 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...

weak ridging of 29.7 persists over lake superior today while 29.6 
inch low pressure broadly organizes over the plains and 30.0 inch 
high pressure resides over the ohio river valley. by thursday 
morning, the high will build to 30.2 inches over the mid atlantic 
states while a 29.6 inch low moves from manitoba to northern 
ontario. meanwhile, a developing 29.4 inch colorado low moves to the 
upper mississippi valley by thursday evening. the low reaches 
northern lower michigan friday morning and then quebec by the 
evening hours with broad high pressure over the high plains of at 
least 30.6 inches in its wake. friday night through saturday, a low 
will deepen from 29.9 to 29.7 inches as it moves from the lower 
mississippi valley to the lower great lakes, reaching southern 
quebec sunday morning as 30.5 inch high pressure overspreads the 
plains. the high slides south of the great lakes on monday while a 
29.6 inch low moves into northern ontario.



lsz265-072100-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
1000 am est wed jan 7 2026

.rest of today...southwest winds 10 to 20 knots backing south by
mid afternoon. waves calm to 2 feet. 
.tonight...south winds 10 to 20 knots diminishing to 5 to
15 knots by midnight, then veering southwest late. waves calm to
2 feet. 
.thursday...southwest winds 10 to 20 knots veering west by mid
afternoon. patchy fog in the morning. waves calm to 2 feet. 
.thursday night...north winds 5 to 15 knots increasing to 15 to
25 knots after midnight. a chance of rain showers. a chance of
snow showers after midnight. waves building to 3 to 5 feet
occasionally to 7 feet. 
.friday...north gales to 35 knots diminishing to 15 to 25 knots
in the afternoon. a slight chance of rain showers in the morning.
a slight chance of snow showers. a slight chance of freezing rain
in the afternoon. waves building to 4 to 7 feet occasionally to
9 feet, then subsiding to 3 to 5 feet occasionally to 7 feet. 
.friday night...north winds 10 to 20 knots veering southeast
after midnight. waves subsiding to 1 to 3 feet. 
.saturday...east gales to 35 knots becoming north gales to
45 knots. a chance of snow showers. freezing spray. waves
building to 10 to 14 feet occasionally to 18 feet. 
.sunday...north gales to 40 knots becoming west 15 to 25 knots.
freezing spray. waves subsiding to 1 to 3 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 071500
glfls 
expires:202601072100;;946233

open lake forecast for lake superior
national weather service marquette mi
1000 am est wed jan 7 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...

weak ridging of 29.7 persists over lake superior today while 29.6 
inch low pressure broadly organizes over the plains and 30.0 inch 
high pressure resides over the ohio river valley. by thursday 
morning, the high will build to 30.2 inches over the mid atlantic 
states while a 29.6 inch low moves from manitoba to northern 
ontario. meanwhile, a developing 29.4 inch colorado low moves to the 
upper mississippi valley by thursday evening. the low reaches 
northern lower michigan friday morning and then quebec by the 
evening hours with broad high pressure over the high plains of at 
least 30.6 inches in its wake. friday night through saturday, a low 
will deepen from 29.9 to 29.7 inches as it moves from the lower 
mississippi valley to the lower great lakes, reaching southern 
quebec sunday morning as 30.5 inch high pressure overspreads the 
plains. the high slides south of the great lakes on monday while a 
29.6 inch low moves into northern ontario.



lsz266-072100-
lake superior east of a line from manitou island to marquette mi
and west of a line from grand marais mi to the us/canadian border
beyond 5nm from shore-
1000 am est wed jan 7 2026

.rest of today...southwest winds 10 to 20 knots backing south by
mid afternoon. waves 1 to 3 feet. 
.tonight...south winds 10 to 20 knots. patchy fog after midnight.
waves building to 2 to 4 feet. 
.thursday...south winds 10 to 20 knots diminishing to 5 to
15 knots by mid afternoon. patchy fog in the morning. waves
subsiding to calm to 2 feet. 
.thursday night...northeast winds 5 to 15 knots becoming north
20 to 30 knots after midnight. a chance of rain showers. a slight
chance of snow showers after midnight. waves building to 3 to
5 feet occasionally to 7 feet. 
.friday...north gales to 35 knots diminishing to 20 to 30 knots
in the afternoon. a chance of rain and snow showers. waves
building to 5 to 8 feet occasionally to 10 feet, then subsiding
to 3 to 6 feet occasionally to 8 feet. 
.friday night...north winds 10 to 20 knots veering east after
midnight. waves subsiding to 1 to 3 feet. 
.saturday...east gales to 35 knots becoming north gales to
45 knots. a chance of snow showers. freezing spray. waves
building to 10 to 14 feet occasionally to 18 feet. 
.sunday...north gales to 40 knots becoming west 15 to 25 knots.
freezing spray. waves subsiding to 3 to 5 feet occasionally to
7 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 071500
glfls 
expires:202601072100;;946234

open lake forecast for lake superior
national weather service marquette mi
1000 am est wed jan 7 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...

weak ridging of 29.7 persists over lake superior today while 29.6 
inch low pressure broadly organizes over the plains and 30.0 inch 
high pressure resides over the ohio river valley. by thursday 
morning, the high will build to 30.2 inches over the mid atlantic 
states while a 29.6 inch low moves from manitoba to northern 
ontario. meanwhile, a developing 29.4 inch colorado low moves to the 
upper mississippi valley by thursday evening. the low reaches 
northern lower michigan friday morning and then quebec by the 
evening hours with broad high pressure over the high plains of at 
least 30.6 inches in its wake. friday night through saturday, a low 
will deepen from 29.9 to 29.7 inches as it moves from the lower 
mississippi valley to the lower great lakes, reaching southern 
quebec sunday morning as 30.5 inch high pressure overspreads the 
plains. the high slides south of the great lakes on monday while a 
29.6 inch low moves into northern ontario.



lsz267-072100-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
1000 am est wed jan 7 2026

.rest of today...west winds 10 to 20 knots backing south by mid
afternoon. waves 1 to 3 feet. 
.tonight...south winds 10 to 20 knots. waves building to 2 to
4 feet, then subsiding to 1 to 3 feet. 
.thursday...south winds 10 to 20 knots. patchy fog in the
morning. waves subsiding to calm to 2 feet. 
.thursday night...southeast winds 10 to 20 knots becoming
northeast 15 to 25 knots after midnight. a chance of rain showers
in the evening, then rain showers likely, possibly mixed with
snow showers after midnight. waves building to 2 to 4 feet. 
.friday...north winds 20 to 30 knots. a chance of rain and snow
showers. waves building to 4 to 7 feet occasionally to 9 feet,
then subsiding to 3 to 6 feet occasionally to 8 feet. 
.friday night...north winds 15 to 25 knots veering east after
midnight. waves subsiding to 1 to 3 feet. 
.saturday...east winds 20 to 30 knots becoming northeast gales to
35 knots. freezing spray. snow showers likely. waves building to
7 to 10 feet occasionally to 13 feet. 
.sunday...north gales to 35 knots becoming west 15 to 25 knots.
freezing spray. waves subsiding to 3 to 5 feet occasionally to
7 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 071500
glfls 
expires:202601072100;;946229

open lake forecast for lake superior
national weather service marquette mi
1000 am est wed jan 7 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...

weak ridging of 29.7 persists over lake superior today while 29.6 
inch low pressure broadly organizes over the plains and 30.0 inch 
high pressure resides over the ohio river valley. by thursday 
morning, the high will build to 30.2 inches over the mid atlantic 
states while a 29.6 inch low moves from manitoba to northern 
ontario. meanwhile, a developing 29.4 inch colorado low moves to the 
upper mississippi valley by thursday evening. the low reaches 
northern lower michigan friday morning and then quebec by the 
evening hours with broad high pressure over the high plains of at 
least 30.6 inches in its wake. friday night through saturday, a low 
will deepen from 29.9 to 29.7 inches as it moves from the lower 
mississippi valley to the lower great lakes, reaching southern 
quebec sunday morning as 30.5 inch high pressure overspreads the 
plains. the high slides south of the great lakes on monday while a 
29.6 inch low moves into northern ontario.



lsz162-072100-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1000 am est wed jan 7 2026 /900 am cst wed jan 7 2026/

.rest of today...southwest winds 10 to 20 knots increasing to
15 to 25 knots by late morning, then diminishing to 10 to
20 knots by mid afternoon. waves 1 to 3 feet building to 2 to
4 feet, then subsiding to 1 to 3 feet. 
.tonight...southwest winds 10 to 20 knots diminishing to 5 to
15 knots late. waves subsiding to calm to 2 feet, then building
to 1 to 3 feet. 
.thursday...west winds 5 to 15 knots. waves subsiding to calm to
2 feet. 
.thursday night...north winds 5 to 15 knots increasing to 10 to
20 knots after midnight. a slight chance of rain showers in the
evening. waves building to 1 to 3 feet. 
.friday...north winds 10 to 20 knots becoming northwest 5 to
15 knots in the afternoon. waves subsiding to calm to 2 feet. 
.friday night...southwest winds 5 to 15 knots becoming southeast
10 to 20 knots after midnight. waves calm to 2 feet. 
.saturday...north winds 20 to 30 knots increasing to gales to
35 knots. a chance of snow showers. waves building to 4 to 7 feet
occasionally to 9 feet, then subsiding to 3 to 6 feet
occasionally to 8 feet. 
.sunday...west winds 15 to 25 knots backing southwest. waves
subsiding to calm to 2 feet, then building to 2 to 4 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 071500
glfls 
expires:202601072100;;946230

open lake forecast for lake superior
national weather service marquette mi
1000 am est wed jan 7 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...

weak ridging of 29.7 persists over lake superior today while 29.6 
inch low pressure broadly organizes over the plains and 30.0 inch 
high pressure resides over the ohio river valley. by thursday 
morning, the high will build to 30.2 inches over the mid atlantic 
states while a 29.6 inch low moves from manitoba to northern 
ontario. meanwhile, a developing 29.4 inch colorado low moves to the 
upper mississippi valley by thursday evening. the low reaches 
northern lower michigan friday morning and then quebec by the 
evening hours with broad high pressure over the high plains of at 
least 30.6 inches in its wake. friday night through saturday, a low 
will deepen from 29.9 to 29.7 inches as it moves from the lower 
mississippi valley to the lower great lakes, reaching southern 
quebec sunday morning as 30.5 inch high pressure overspreads the 
plains. the high slides south of the great lakes on monday while a 
29.6 inch low moves into northern ontario.



lsz263-072100-
lake superior from saxon harbor wi to upper entrance to portage
canal mi 5nm off shore to the us/canadian border including isle
royale national park-
1000 am est wed jan 7 2026

.rest of today...southwest winds 10 to 20 knots. waves 1 to
3 feet building to 2 to 4 feet. 
.tonight...southwest winds 5 to 15 knots. waves subsiding to calm
to 2 feet, then building to 1 to 3 feet. 
.thursday...southwest winds 5 to 15 knots veering west. patchy
fog in the morning. waves subsiding to calm to 2 feet. 
.thursday night...north winds 10 to 20 knots increasing to 15 to
25 knots after midnight. a slight chance of rain showers. a
slight chance of snow showers after midnight. waves building to
3 to 5 feet occasionally to 7 feet. 
.friday...north winds 15 to 25 knots diminishing to 10 to
20 knots in the afternoon. waves subsiding to 1 to 3 feet. 
.friday night...southeast winds 5 to 15 knots. waves subsiding to
calm to 2 feet, then building to 1 to 3 feet. 
.saturday...northeast gales to 35 knots becoming north gales to
40 knots. a chance of snow showers. freezing spray. waves
building to 7 to 11 feet occasionally to 14 feet. 
.sunday...north winds 20 to 30 knots becoming southwest 15 to
25 knots. waves subsiding to 2 to 4 feet, then building to 3 to
6 feet occasionally to 8 feet. 

note, wave height forecasts are for ice free areas.

$$