fzus61 kbuf 130802
glflo 
expires:202607131500;;888724

open lake forecast for lake ontario
national weather service buffalo ny
402 am edt mon jul 13 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 large 30.2 inch high will slide east to eastern new 
england today, then shift off the coast tonight and tuesday. this 
will allow a warm front to sweep across the lake tuesday, followed 
by a cold front pushing south across the lake on wednesday, trailed 
by a secondary cold front pushing south across the lake thursday 
into friday.


loz063>065-131500-
lake ontario open waters from hamlin beach to the saint lawrence
river-
402 am edt mon jul 13 2026

.today...south winds 5 to 15 knots becoming west. waves 2 feet or
less. 
.tonight...southwest winds 5 to 15 knots. waves 1 to 3 feet. 
.tuesday...southwest winds 15 to 20 knots. waves 2 to 4 feet
building to 3 to 6 feet. 
.tuesday night...southwest winds 15 to 25 knots becoming west.
waves 4 to 7 feet subsiding to 3 to 6 feet. waves occasionally
around 9 feet. 
.wednesday...west winds 15 to 20 knots diminishing to 10 to
15 knots. waves 3 to 5 feet subsiding to 1 to 3 feet. 
.thursday...west winds 15 to 20 knots becoming north 10 to
15 knots. waves 1 to 3 feet building to 2 to 4 feet, then
subsiding to 1 to 3 feet. 
.friday...north winds 5 to 10 knots becoming southwest. a chance
of showers friday night. waves 2 feet or less. 

$$

fzus61 kbuf 130802
glflo 
expires:202607131500;;888723

open lake forecast for lake ontario
national weather service buffalo ny
402 am edt mon jul 13 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 large 30.2 inch high will slide east to eastern new 
england today, then shift off the coast tonight and tuesday. this 
will allow a warm front to sweep across the lake tuesday, followed 
by a cold front pushing south across the lake on wednesday, trailed 
by a secondary cold front pushing south across the lake thursday 
into friday.


loz062-131500-
lake ontario open waters from the niagara river to hamlin beach-
402 am edt mon jul 13 2026

.today...southwest winds 10 knots or less. waves 1 foot or less. 
.tonight...southwest winds 10 to 15 knots increasing to 15 to
20 knots. waves 1 to 3 feet building to 2 to 4 feet. 
.tuesday...southwest winds 15 to 20 knots. waves 2 to 4 feet
building to 3 to 5 feet. 
.tuesday night...southwest winds 15 to 20 knots becoming west.
waves 3 to 5 feet subsiding to 2 to 4 feet. 
.wednesday...west winds 5 to 15 knots. waves 1 to 3 feet. 
.thursday...west winds 5 to 15 knots becoming north. waves 1 to
3 feet. 
.friday...north winds 5 to 10 knots. a chance of showers friday
night. waves 1 foot or less. 

$$

fzus61 kcle 130738
glfle 
expires:202607131415;;888006

open lake forecast for lake erie
national weather service cleveland oh
338 am edt mon jul 13 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 30.10 inches continues to build across the great
lakes region today before settling across the ohio valley through
wednesday. a cold front will move south across lake erie on 
wednesday with an additional cold front moving south through the 
region on friday. 


lez164>166-131415-
the islands to vermilion oh beyond 5 nm off shoreline to us-
canadian border-
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-
338 am edt mon jul 13 2026

.today...northeast winds less than 10 knots. waves 1 foot or
less. 
.tonight...southwest winds 10 knots or less. waves 1 foot or
less. 
.tuesday...southwest winds 10 to 15 knots. waves 2 feet or less. 
.tuesday night...southwest winds 10 to 15 knots becoming west.
waves 1 to 3 feet. 
.wednesday...west winds 5 to 10 knots becoming north. waves 1 to
3 feet. 
.thursday...north winds 10 knots or less becoming northeast.
waves 1 foot or less. 
.friday...northwest winds 5 to 15 knots becoming southwest. a
chance of showers friday night. waves 2 feet or less. 

$$

fzus61 kcle 130738
glfle 
expires:202607131415;;888007

open lake forecast for lake erie
national weather service cleveland oh
338 am edt mon jul 13 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 30.10 inches continues to build across the great
lakes region today before settling across the ohio valley through
wednesday. a cold front will move south across lake erie on 
wednesday with an additional cold front moving south through the 
region on friday. 


lez061-167>169-131415-
ripley to buffalo ny extending from 5nm off shoreline to us-
canadian border-willowick to geneva-on-the-
lake oh beyond 5nm off shoreline to us-canadian border-geneva-on-
the-lake to conneaut oh beyond 5 nm off shoreline to us-
canadian border-
conneaut oh to ripley ny beyond 5 nm off shoreline to us-
canadian border-
338 am edt mon jul 13 2026

.today...southeast winds less than 10 knots becoming west. waves
1 foot or less. 
.tonight...southwest winds 5 to 10 knots. waves 1 foot or less. 
.tuesday...southwest winds 10 to 15 knots increasing to 15 to
20 knots. waves 1 to 3 feet building to 2 to 4 feet. 
.tuesday night...southwest winds 15 to 20 knots becoming west
10 to 15 knots. waves 2 to 4 feet. 
.wednesday...west winds 5 to 10 knots becoming northwest. waves
1 to 3 feet. 
.thursday...northwest winds 5 to 10 knots becoming north. waves
1 foot or less. 
.friday...north winds 5 to 15 knots becoming southwest. a chance
of showers friday night. waves 2 feet or less. 

$$

fzus61 kcle 130738
glfle 
expires:202607131415;;888005

open lake forecast for lake erie
national weather service cleveland oh
338 am edt mon jul 13 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 30.10 inches continues to build across the great
lakes region today before settling across the ohio valley through
wednesday. a cold front will move south across lake erie on 
wednesday with an additional cold front moving south through the 
region on friday. 


lez162-163-131415-
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-
338 am edt mon jul 13 2026

.today...northeast winds 10 knots or less becoming southeast.
waves 1 foot or less. 
.tonight...south winds 5 to 10 knots becoming southwest. waves
1 foot or less. 
.tuesday...west winds 5 to 10 knots becoming southwest. waves
1 foot or less. 
.tuesday night...southwest winds 5 to 10 knots becoming west.
waves 2 feet or less. 
.wednesday...west winds 5 to 10 knots becoming north. waves
2 feet or less. 
.thursday...north winds 5 to 10 knots becoming northeast. waves
1 foot or less. 
.friday...north winds 5 to 15 knots becoming southwest. a chance
of showers friday night. waves 2 feet or less. 

$$

fzus63 kdtx 130732
glfsc 
expires:202607131545;;887805

lake st clair forecast
national weather service detroit/pontiac mi
332 am edt mon jul 13 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...area of high pressure, 30.20 inches, will continue to
influence the quiet weather over much of the great lakes region.
there are slight chances for some unsettled weather over northern
portions of lake huron this morning, otherwise, dry conditions 
prevail through at least the middle of week.


lcz460-131545-
lake st clair-
332 am edt mon jul 13 2026

.today...light and variable winds becoming south 5 to 10 knots in
the afternoon. mostly sunny. waves 2 feet or less.
.tonight...south winds 5 to 10 knots increasing to 10 to 15 knots
late in the evening...then becoming southwest 5 to 10 knots after
midnight. clear. waves 2 feet or less.
.tuesday...southwest winds 5 to 10 knots. sunny. waves 2 feet or
less.
.tuesday night...west winds 10 to 15 knots. clear. waves 2 feet or
less.
.wednesday...northwest winds 5 to 10 knots veering to the northeast
in the afternoon and evening. sunny becoming mostly clear. waves 2
feet or less.
.thursday...northeast winds 5 to 10 knots. mostly clear. waves 2
feet or less.
.friday...east winds 10 to 15 knots. mostly clear. a chance of
showers. waves 2 feet or less.

$$

fzus63 kdtx 130732
glflh 
expires:202607131545;;887801

open lake forecast for lake huron
national weather service detroit/pontiac mi
332 am edt mon jul 13 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...area of high pressure, 30.20 inches, will continue to
influence the quiet weather over much of the great lakes region.
there are slight chances for some unsettled weather over northern
portions of lake huron this morning, otherwise, dry conditions 
prevail through at least the middle of week.


lhz361-131545-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
332 am edt mon jul 13 2026

.today...west winds 10 to 15 knots. waves 1 to 3 feet. 
.tonight...west winds 5 to 10 knots becoming southwest 10 to
15 knots after midnight. waves 1 to 3 feet building to 2 to
4 feet early in the morning. 
.tuesday...west winds 10 to 15 knots increasing to 15 to 20 knots
early in the afternoon. waves 2 to 4 feet. 
.tuesday night...west winds 10 to 15 knots becoming northwest
5 to 10 knots after midnight. waves 2 to 4 feet subsiding to 1 to
3 feet after midnight. 
.wednesday...northwest winds 5 to 10 knots increasing to 10 to
15 knots late in the afternoon. waves 2 feet or less building to
2 to 4 feet late in the afternoon. 
.thursday...northwest winds 5 to 10 knots increasing to 10 to
15 knots until early evening...then becoming north 5 to 10 knots
by midnight. waves 1 to 3 feet. 
.friday...north winds 5 to 10 knots becoming east 10 to 15 knots
in the late morning and early afternoon...then decreasing to 5 to
10 knots . a chance of showers. waves 1 to 3 feet. 


$$

fzus63 kdtx 130732
glflh 
expires:202607131545;;887802

open lake forecast for lake huron
national weather service detroit/pontiac mi
332 am edt mon jul 13 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...area of high pressure, 30.20 inches, will continue to
influence the quiet weather over much of the great lakes region.
there are slight chances for some unsettled weather over northern
portions of lake huron this morning, otherwise, dry conditions 
prevail through at least the middle of week.


lhz362-363-131545-
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-
332 am edt mon jul 13 2026

.today...southwest winds 10 to 15 knots becoming south 5 to
10 knots in the afternoon. waves 1 to 3 feet. 
.tonight...southeast winds 5 to 10 knots veering to the southwest
by midnight...then increasing to 10 to 15 knots early in the
morning. waves 1 to 3 feet. 
.tuesday...southwest winds 10 to 15 knots decreasing to 5 to
10 knots in the late morning and afternoon. waves 2 to 4 feet. 
.tuesday night...southwest winds 5 to 10 knots becoming northwest
10 to 15 knots in the late evening and overnight. waves 3 to
5 feet. 
.wednesday...northwest winds 5 to 10 knots increasing to
northwest 10 to 15 knots late in the afternoon. waves 1 to 3 feet
building to 3 to 5 feet late in the afternoon. 
.thursday...northwest winds 5 to 10 knots. waves 1 to 3 feet. 
.friday...northeast winds 5 to 10 knots veering to the southeast
by midnight. a chance of showers . waves 1 to 3 feet. 


$$

fzus63 kdtx 130732
glflh 
expires:202607131545;;887803

open lake forecast for lake huron
national weather service detroit/pontiac mi
332 am edt mon jul 13 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...area of high pressure, 30.20 inches, will continue to
influence the quiet weather over much of the great lakes region.
there are slight chances for some unsettled weather over northern
portions of lake huron this morning, otherwise, dry conditions 
prevail through at least the middle of week.


lhz462>464-131545-
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-
332 am edt mon jul 13 2026

.today...southwest winds 5 to 10 knots backing to the south late
in the afternoon. waves 1 to 3 feet. 
.tonight...south winds 5 to 10 knots becoming southwest 10 to
15 knots in the late evening and overnight. waves 1 to 3 feet. 
.tuesday...southwest winds 10 to 15 knots decreasing to 5 to
10 knots in the late morning and afternoon. waves 1 to 3 feet
building to 2 to 4 feet early in the afternoon. 
.tuesday night...southwest winds 10 to 15 knots becoming west
5 to 10 knots in the late evening and overnight. waves 2 to
4 feet subsiding to 1 to 3 feet in the late evening and
overnight. 
.wednesday...north winds 5 to 10 knots becoming light and
variable...then becoming north 5 to 10 knots late in the evening.
waves 2 feet or less. 
.thursday...northwest winds 5 to 10 knots early in the morning
becoming light and variable...then becoming north 5 to 10 knots
by midnight. waves 2 feet or less. 
.friday...north winds 5 to 10 knots veering to the east by
midnight. a chance of showers by midnight. waves 1 to 3 feet. 


$$

fzus63 kmkx 130738
glflm 
expires:202607131515;;888010

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
238 am cdt mon jul 13 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...

high pressure of 30.2 inches over the great lakes region will 
maintain an axis roughly from northern iowa to southern lower 
michigan through today and then sink into illinois and indiana 
tuesday and wednesday while weakening to 30.1 inches. low pressure
around 29.6 inches will approach from the northern plains 
thursday into friday. look for winds to become south- 
southwesterly for today and tuesday. a weak cold front will bring
a wind shift to the north- northeast wednesday into thursday.


lmz080-669-671-673-675-777-779-870-872-874-876-878-131515-
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-
238 am cdt mon jul 13 2026

sheboygan wi to pentwater mi south...

.today...west winds 10 to 15 kt becoming south 10 to 20 kt. waves
1 to 2 ft. 
.tonight...southwest winds 10 to 15 kt becoming west. waves 1 to
2 ft. 
.tuesday...west winds 10 to 15 kt becoming southwest 10 to 20 kt.
waves 1 to 2 ft. 
.tuesday night...southwest winds 10 to 20 kt becoming west. waves
1 to 3 ft. 
.wednesday...northwest winds 10 to 15 kt becoming north 10 to
20 kt. waves 1 to 3 ft. 
.wednesday night...north winds 10 to 20 kt diminishing to 5 to
10 kt. waves 1 to 2 ft. 
.thursday...north winds 5 to 10 kt becoming northeast. waves 1 ft
or less. 
.friday...southeast winds 10 to 15 kt becoming south 10 to 20 kt.
waves 1 to 3 ft.  

$$

fzus63 kmkx 130738
glflm 
expires:202607131515;;888009

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
238 am cdt mon jul 13 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...

high pressure of 30.2 inches over the great lakes region will 
maintain an axis roughly from northern iowa to southern lower 
michigan through today and then sink into illinois and indiana 
tuesday and wednesday while weakening to 30.1 inches. low pressure
around 29.6 inches will approach from the northern plains 
thursday into friday. look for winds to become south- 
southwesterly for today and tuesday. a weak cold front will bring
a wind shift to the north- northeast wednesday into thursday.


lmz261-362-364-366-563-565-567-868-131515-
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-
238 am cdt mon jul 13 2026

sheboygan wi to pentwater mi north...

.today...southwest winds 10 to 20 kt. waves 2 to 4 ft subsiding
to 1 to 3 ft. 
.tonight...southwest winds 10 to 20 kt becoming west. waves 1 to
3 ft. 
.tuesday...west winds 10 to 20 kt becoming southwest 15 to 25 kt.
waves 1 to 3 ft. 
.tuesday night...west winds 15 to 25 kt becoming northwest 10 to
20 kt. waves 1 to 3 ft. 
.wednesday...north winds 10 to 15 kt increasing to 10 to 20 kt.
waves 1 to 2 ft. 
.wednesday night...north winds 10 to 15 kt diminishing to 5 to
10 kt. waves 1 to 2 ft. 
.thursday...north winds 10 to 15 kt increasing to 10 to 20 kt.
waves 1 ft or less. 
.friday...southeast winds 10 to 20 kt becoming south. chance of
showers. waves 1 to 3 ft.  

$$

fzus63 kmqt 130801
glfls 
expires:202607132000;;888591

open lake forecast for lake superior
national weather service marquette mi
400 am edt mon jul 13 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, lake superior is between a 30.1 to 30.1 inch high over 
the south half of the great lakes and a 29.5 inch low over hudson 
bay. throughout today, the high will remain mainly steady while the 
high shifts to the eastern shores of hudson bay, deepening to 29.3 
inches. tuesday, despite a 30.1 inch high over the canadian prairie 
approaching, high pressure south of the great lakes weakens to 30.0 
inches as the hudson low shifts into northern quebec at 29.2 inches. 
wednesday afternoon, the 30.1 inch high will move fully into 
manitoba as the low weakens slightly to 29.3 inches over labrador. 
by thursday night, the high will move over the great lakes and 
northern ontario at 30.1 inches, being flanked to the east by 29.4 
inch low pressure over labrador and 29.8 inch low pressure over 
north dakota and minnesota. the low moves into the great lakes by 
friday night as high pressure shifts to the east coast at 30.0 
inches with another 30.0 inch high building over the canadian 
prairie, which will advance towards the great lakes through the 
weekend.




lsz264-132000-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
400 am edt mon jul 13 2026

.early this morning...west winds 15 to 25 knots. waves 3 to
5 feet occasionally to 7 feet. 
.today...west winds 15 to 25 knots backing southwest in the
afternoon, then increasing to 20 to 30 knots late. waves building
to 4 to 7 feet occasionally to 9 feet. 
.tonight...southwest winds 20 to 30 knots veering west after
midnight. waves building to 4 to 8 feet occasionally to 10 feet. 
.tuesday...west winds 15 to 25 knots diminishing to 5 to
15 knots. waves subsiding to 1 to 3 feet. 
.tuesday night...west winds 5 to 15 knots veering northwest after
midnight. waves subsiding to calm to 2 feet. 
.wednesday...northwest winds 5 to 15 knots backing west by mid
afternoon. waves calm to 2 feet. 
.wednesday night...west winds 5 to 15 knots veering northwest
after midnight. waves calm to 2 feet. 
.thursday...north winds 5 to 15 knots veering southeast. a chance
of showers. waves calm to 2 feet. 
.friday...southeast winds 5 to 15 knots backing east. a chance of
showers. waves calm to 2 feet. 

$$

fzus63 kmqt 130801
glfls 
expires:202607132000;;888592

open lake forecast for lake superior
national weather service marquette mi
400 am edt mon jul 13 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, lake superior is between a 30.1 to 30.1 inch high over 
the south half of the great lakes and a 29.5 inch low over hudson 
bay. throughout today, the high will remain mainly steady while the 
high shifts to the eastern shores of hudson bay, deepening to 29.3 
inches. tuesday, despite a 30.1 inch high over the canadian prairie 
approaching, high pressure south of the great lakes weakens to 30.0 
inches as the hudson low shifts into northern quebec at 29.2 inches. 
wednesday afternoon, the 30.1 inch high will move fully into 
manitoba as the low weakens slightly to 29.3 inches over labrador. 
by thursday night, the high will move over the great lakes and 
northern ontario at 30.1 inches, being flanked to the east by 29.4 
inch low pressure over labrador and 29.8 inch low pressure over 
north dakota and minnesota. the low moves into the great lakes by 
friday night as high pressure shifts to the east coast at 30.0 
inches with another 30.0 inch high building over the canadian 
prairie, which will advance towards the great lakes through the 
weekend.




lsz265-132000-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
400 am edt mon jul 13 2026

.early this morning...west winds 10 to 20 knots. waves 2 to
4 feet. 
.today...west winds 15 to 25 knots diminishing to 10 to 20 knots
in the afternoon. waves subsiding to calm to 2 feet, then
building to 1 to 3 feet. 
.tonight...southwest winds 10 to 20 knots becoming west 15 to
25 knots after midnight. waves building to 3 to 5 feet
occasionally to 7 feet. 
.tuesday...west winds 15 to 25 knots becoming northwest 10 to
20 knots in the afternoon, then diminishing to 5 to 15 knots
late. waves subsiding to calm to 2 feet. 
.tuesday night...northwest winds 5 to 15 knots increasing to
10 to 20 knots after midnight. waves calm to 2 feet. 
.wednesday...northwest winds 5 to 15 knots. waves calm to 2 feet.
.wednesday night...west winds 5 to 15 knots increasing to 10 to
20 knots after midnight. waves calm to 2 feet. 
.thursday...north winds 5 to 15 knots veering southeast. a chance
of showers. waves calm to 2 feet. 
.friday...southeast winds 15 to 25 knots veering south. a chance
of showers. waves building to 1 to 3 feet, then subsiding to calm
to 2 feet. 

$$

fzus63 kmqt 130801
glfls 
expires:202607132000;;888589

open lake forecast for lake superior
national weather service marquette mi
400 am edt mon jul 13 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, lake superior is between a 30.1 to 30.1 inch high over 
the south half of the great lakes and a 29.5 inch low over hudson 
bay. throughout today, the high will remain mainly steady while the 
high shifts to the eastern shores of hudson bay, deepening to 29.3 
inches. tuesday, despite a 30.1 inch high over the canadian prairie 
approaching, high pressure south of the great lakes weakens to 30.0 
inches as the hudson low shifts into northern quebec at 29.2 inches. 
wednesday afternoon, the 30.1 inch high will move fully into 
manitoba as the low weakens slightly to 29.3 inches over labrador. 
by thursday night, the high will move over the great lakes and 
northern ontario at 30.1 inches, being flanked to the east by 29.4 
inch low pressure over labrador and 29.8 inch low pressure over 
north dakota and minnesota. the low moves into the great lakes by 
friday night as high pressure shifts to the east coast at 30.0 
inches with another 30.0 inch high building over the canadian 
prairie, which will advance towards the great lakes through the 
weekend.




lsz162-132000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
400 am edt mon jul 13 2026 /300 am cdt mon jul 13 2026/

.early this morning...southwest winds 10 to 20 knots. waves 1 to
3 feet. 
.today...southwest winds 15 to 25 knots increasing to 20 to
30 knots late. waves building to 3 to 6 feet occasionally to
8 feet. 
.tonight...southwest winds 20 to 30 knots diminishing to 15 to
25 knots after midnight. waves subsiding to 2 to 4 feet. 
.tuesday...southwest winds 10 to 20 knots diminishing to 5 to
15 knots in the afternoon, then veering west late. waves
subsiding to calm to 2 feet. 
.tuesday night...north winds 5 to 15 knots. waves calm to 2 feet.
.wednesday...north winds 5 to 15 knots backing southwest by mid
afternoon. waves calm to 2 feet. 
.wednesday night...west winds 5 to 15 knots veering north after
midnight. waves calm to 2 feet. 
.thursday...northeast winds 10 to 20 knots. a chance of showers.
waves calm to 2 feet. 
.friday...northeast winds 10 to 20 knots diminishing to 5 to
15 knots. a chance of showers. waves building to 1 to 3 feet,
then subsiding to calm to 2 feet. 

$$

fzus63 kmqt 130801
glfls 
expires:202607132000;;888594

open lake forecast for lake superior
national weather service marquette mi
400 am edt mon jul 13 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, lake superior is between a 30.1 to 30.1 inch high over 
the south half of the great lakes and a 29.5 inch low over hudson 
bay. throughout today, the high will remain mainly steady while the 
high shifts to the eastern shores of hudson bay, deepening to 29.3 
inches. tuesday, despite a 30.1 inch high over the canadian prairie 
approaching, high pressure south of the great lakes weakens to 30.0 
inches as the hudson low shifts into northern quebec at 29.2 inches. 
wednesday afternoon, the 30.1 inch high will move fully into 
manitoba as the low weakens slightly to 29.3 inches over labrador. 
by thursday night, the high will move over the great lakes and 
northern ontario at 30.1 inches, being flanked to the east by 29.4 
inch low pressure over labrador and 29.8 inch low pressure over 
north dakota and minnesota. the low moves into the great lakes by 
friday night as high pressure shifts to the east coast at 30.0 
inches with another 30.0 inch high building over the canadian 
prairie, which will advance towards the great lakes through the 
weekend.




lsz267-132000-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
400 am edt mon jul 13 2026

.early this morning...southwest winds 10 to 20 knots. a slight
chance of showers. waves calm to 2 feet. 
.today...west winds 5 to 15 knots backing south late. waves
building to 1 to 3 feet, then subsiding to calm to 2 feet. 
.tonight...south winds 5 to 15 knots becoming southwest 10 to
20 knots after midnight, then becoming west 15 to 25 knots late.
waves building to 4 to 7 feet occasionally to 9 feet. 
.tuesday...west winds 15 to 25 knots diminishing to 10 to
20 knots in the afternoon. waves building to 5 to 8 feet
occasionally to 10 feet, then subsiding to 2 to 4 feet. 
.tuesday night...northwest winds 5 to 15 knots backing west after
midnight. waves subsiding to calm to 2 feet. 
.wednesday...west winds 5 to 15 knots increasing to 10 to
20 knots by mid afternoon. waves calm to 2 feet. 
.wednesday night...west winds 5 to 15 knots veering northwest
after midnight. waves calm to 2 feet. 
.thursday...northwest winds 5 to 15 knots. a chance of showers.
waves calm to 2 feet. 
.friday...southeast winds 5 to 15 knots increasing to 10 to
20 knots. a chance of showers. waves calm to 2 feet. 

$$

fzus63 kmqt 130801
glfls 
expires:202607132000;;888593

open lake forecast for lake superior
national weather service marquette mi
400 am edt mon jul 13 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, lake superior is between a 30.1 to 30.1 inch high over 
the south half of the great lakes and a 29.5 inch low over hudson 
bay. throughout today, the high will remain mainly steady while the 
high shifts to the eastern shores of hudson bay, deepening to 29.3 
inches. tuesday, despite a 30.1 inch high over the canadian prairie 
approaching, high pressure south of the great lakes weakens to 30.0 
inches as the hudson low shifts into northern quebec at 29.2 inches. 
wednesday afternoon, the 30.1 inch high will move fully into 
manitoba as the low weakens slightly to 29.3 inches over labrador. 
by thursday night, the high will move over the great lakes and 
northern ontario at 30.1 inches, being flanked to the east by 29.4 
inch low pressure over labrador and 29.8 inch low pressure over 
north dakota and minnesota. the low moves into the great lakes by 
friday night as high pressure shifts to the east coast at 30.0 
inches with another 30.0 inch high building over the canadian 
prairie, which will advance towards the great lakes through the 
weekend.




lsz266-132000-
lake superior east of a line from manitou island to marquette mi
and west of a line from grand marais mi to the us/canadian border
beyond 5nm from shore-
400 am edt mon jul 13 2026

.early this morning...southwest winds 20 to 30 knots. a slight
chance of showers. waves 3 to 5 feet occasionally to 7 feet. 
.today...west winds 15 to 25 knots backing south late. waves
subsiding to 2 to 4 feet, then building to 3 to 6 feet
occasionally to 8 feet. 
.tonight...southwest winds 20 to 30 knots veering west after
midnight. waves building to 5 to 8 feet occasionally to 10 feet. 
.tuesday...west winds 15 to 25 knots becoming northwest 10 to
20 knots in the afternoon, then diminishing to 5 to 15 knots
late. waves subsiding to 2 to 4 feet. 
.tuesday night...northwest winds 5 to 15 knots. waves subsiding
to calm to 2 feet. 
.wednesday...northwest winds 5 to 15 knots backing west by mid
afternoon. waves calm to 2 feet. 
.wednesday night...west winds 5 to 15 knots veering northwest
after midnight. waves calm to 2 feet. 
.thursday...northwest winds 5 to 15 knots backing southeast. a
chance of showers. waves calm to 2 feet. 
.friday...southeast winds 10 to 20 knots. a chance of showers.
waves building to 1 to 3 feet, then subsiding to calm to 2 feet. 

$$

fzus63 kmqt 130801
glfls 
expires:202607132000;;888590

open lake forecast for lake superior
national weather service marquette mi
400 am edt mon jul 13 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, lake superior is between a 30.1 to 30.1 inch high over 
the south half of the great lakes and a 29.5 inch low over hudson 
bay. throughout today, the high will remain mainly steady while the 
high shifts to the eastern shores of hudson bay, deepening to 29.3 
inches. tuesday, despite a 30.1 inch high over the canadian prairie 
approaching, high pressure south of the great lakes weakens to 30.0 
inches as the hudson low shifts into northern quebec at 29.2 inches. 
wednesday afternoon, the 30.1 inch high will move fully into 
manitoba as the low weakens slightly to 29.3 inches over labrador. 
by thursday night, the high will move over the great lakes and 
northern ontario at 30.1 inches, being flanked to the east by 29.4 
inch low pressure over labrador and 29.8 inch low pressure over 
north dakota and minnesota. the low moves into the great lakes by 
friday night as high pressure shifts to the east coast at 30.0 
inches with another 30.0 inch high building over the canadian 
prairie, which will advance towards the great lakes through the 
weekend.




lsz263-132000-
lake superior from saxon harbor wi to upper entrance to portage
canal mi 5nm off shore to the us/canadian border including isle
royale national park-
400 am edt mon jul 13 2026

.early this morning...southwest winds 15 to 25 knots. waves 3 to
5 feet occasionally to 7 feet. 
.today...southwest winds 15 to 25 knots increasing to 20 to
30 knots late. waves building to 5 to 8 feet occasionally to
10 feet. 
.tonight...southwest winds 20 to 30 knots becoming west 15 to
25 knots late. waves subsiding to 3 to 6 feet occasionally to
8 feet. 
.tuesday...west winds 10 to 20 knots diminishing to 5 to 15 knots
in the afternoon. waves subsiding to 1 to 3 feet. 
.tuesday night...northwest winds 5 to 15 knots. waves subsiding
to calm to 2 feet. 
.wednesday...northwest winds less than 10 knots becoming
southwest 5 to 15 knots by mid afternoon. waves calm to 2 feet. 
.wednesday night...west winds 5 to 15 knots veering north after
midnight. waves calm to 2 feet. 
.thursday...northeast winds 5 to 15 knots veering east. a chance
of showers. waves calm to 2 feet. 
.friday...east winds 5 to 15 knots backing northeast. a chance of
showers. waves calm to 2 feet. 

$$