fzus61 kbuf 062002
glflo 
expires:202605070300;;124737

open lake forecast for lake ontario
national weather service buffalo ny
402 pm edt wed may 6 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 29.8 inch low over western new york this afternoon 
will weaken to 29.6 inches as it moves to northern quebec this 
evening. a 30.1 inch high over the tennessee and ohio valleys 
thursday will slide to the mid-atlantic coastline friday. a 29.6 
inch low will track across the lake early saturday, followed by a 
29.7 inch low that will track near or just south of the lake for 
later sunday. this low will bring a cold front to sweep across the 
region, where a surface low will ride north along the boundary 
across the mid-atlantic region monday.


loz062-070300-
lake ontario open waters from the niagara river to hamlin beach-
402 pm edt wed may 6 2026

.tonight...west winds 10 knots or less. waves 1 foot or less. 
.thursday...west winds 10 knots or less becoming southwest. waves
1 foot or less. 
.thursday night...west winds 5 to 10 knots. waves around 1 foot. 
.friday...southwest winds 5 to 10 knots. waves 1 foot or less. 
.friday night...southwest winds 5 to 10 knots becoming south. a
chance of showers overnight. waves 2 feet or less. 
.saturday...south winds less than 10 knots becoming southwest
10 to 15 knots. a chance of showers. waves 2 feet or less. 
.sunday...west winds 10 knots or less becoming northwest. showers
likely. waves 1 foot or less. 
.monday...northwest winds 10 to 15 knots. waves 1 to 2 feet. 

$$

fzus61 kbuf 062002
glflo 
expires:202605070300;;124738

open lake forecast for lake ontario
national weather service buffalo ny
402 pm edt wed may 6 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 29.8 inch low over western new york this afternoon 
will weaken to 29.6 inches as it moves to northern quebec this 
evening. a 30.1 inch high over the tennessee and ohio valleys 
thursday will slide to the mid-atlantic coastline friday. a 29.6 
inch low will track across the lake early saturday, followed by a 
29.7 inch low that will track near or just south of the lake for 
later sunday. this low will bring a cold front to sweep across the 
region, where a surface low will ride north along the boundary 
across the mid-atlantic region monday.


loz063>065-070300-
lake ontario open waters from hamlin beach to the saint lawrence
river-
402 pm edt wed may 6 2026

.tonight...west winds 10 to 15 knots. waves 2 feet or less. 
.thursday...west winds 5 to 15 knots. waves 1 to 3 feet. 
.thursday night...west winds 5 to 15 knots. waves 1 to 3 feet. 
.friday...west winds 5 to 15 knots becoming southwest. waves
2 feet or less. 
.friday night...southwest winds 5 to 10 knots becoming south. a
chance of showers overnight. waves 2 feet or less. 
.saturday...south winds 5 to 15 knots becoming southwest. a
chance of showers. waves 2 feet or less. 
.sunday...southwest winds 5 to 10 knots becoming north. showers
likely. waves 2 feet or less. 
.monday...northwest winds 10 to 15 knots. a chance of showers
during the day. waves 1 to 3 feet building to 2 to 4 feet, then
subsiding to 1 to 3 feet. 

$$

fzus61 kcle 061938
glfle 
expires:202605070215;;123884

open lake forecast for lake erie
national weather service cleveland oh
338 pm edt wed may 6 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...
a ridge averaging 29.90 inches will slowly build east across the 
great lakes through early friday. low pressure 29.70 inches will 
move east across the great lakes late friday into saturday, 
pushing a cold front east across the lake. another low pressure 
29.80 inches accompanied by a cold front will move east across 
lake erie on sunday.


lez061-167>169-070215-
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 pm edt wed may 6 2026

.tonight...west winds 5 to 10 knots. waves 2 feet or less. 
.thursday...west winds 5 to 15 knots becoming southwest. waves
1 foot or less. 
.thursday night...west winds 5 to 10 knots becoming southwest. a
chance of showers overnight. waves 1 to 2 feet. 
.friday...southwest winds 5 to 15 knots. waves 1 to 2 feet. 
.friday night...southwest winds 5 to 10 knots becoming south. a
chance of showers. waves 1 to 2 feet. 
.saturday...south winds 5 to 10 knots becoming southwest. waves
1 to 2 feet. 
.sunday...southwest winds 5 to 10 knots becoming north and
increasing to 15 to 20 knots. showers likely during the day, then
a chance of showers sunday night. waves 1 to 2 feet. 
.monday...northwest winds 15 to 20 knots diminishing to 5 to
15 knots. waves 2 feet or less. 

$$

fzus61 kcle 061938
glfle 
expires:202605070215;;123883

open lake forecast for lake erie
national weather service cleveland oh
338 pm edt wed may 6 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...
a ridge averaging 29.90 inches will slowly build east across the 
great lakes through early friday. low pressure 29.70 inches will 
move east across the great lakes late friday into saturday, 
pushing a cold front east across the lake. another low pressure 
29.80 inches accompanied by a cold front will move east across 
lake erie on sunday.


lez162>166-070215-
detroit river lt. to maumee bay oh to reno beach oh beyond 5nm
offshoreline to us-canadian border-
reno beach to the islands oh beyond 5nm off shoreline to us-
canadian border-
the islands to vermilion oh beyond 5 nm off shoreline to us-
canadian border-
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 pm edt wed may 6 2026

.tonight...west winds 5 to 15 knots becoming northwest. waves
2 feet or less. 
.thursday...northwest winds 5 to 15 knots becoming west. waves
2 feet or less. 
.thursday night...west winds 10 to 15 knots becoming southwest.
waves 2 feet or less. 
.friday...west winds 5 to 15 knots becoming southwest. a chance
of showers in the afternoon. waves 1 to 2 feet. 
.friday night...southwest winds 5 to 10 knots becoming southeast.
a chance of showers. waves 1 to 2 feet. 
.saturday...southwest winds 5 to 15 knots. waves 1 to 2 feet. 
.sunday...southwest winds 5 to 15 knots becoming north 15 to
20 knots. showers likely during the day, then a chance of showers
sunday night. waves 2 feet or less. 
.monday...north winds 15 to 20 knots becoming northwest 5 to
15 knots. waves 2 feet or less. 

$$

fzus63 kdtx 061932
glfsc 
expires:202605070345;;123734

lake st clair forecast
national weather service detroit/pontiac mi
332 pm edt wed may 6 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...light winds over the next several days as broad high
pressure builds into the ohio valley and southern great lakes
thursday into friday.


lcz460-070345-
lake st clair-
332 pm edt wed may 6 2026

.tonight...west winds 5 to 10 knots becoming northwest 10 to 15
knots after midnight. mostly cloudy in the evening then clearing.
waves 2 feet or less.
.thursday...west winds 5 to 10 knots increasing to 10 to 15 knots in
the afternoon. sunny in the morning becoming partly sunny. waves 2
feet or less.
.thursday night...west winds 10 to 15 knots becoming southwest 5 to
10 knots in the late evening and overnight. partly cloudy becoming
mostly cloudy by midnight becoming partly cloudy. a chance of light
showers after midnight. waves 2 feet or less.
.friday...west winds 5 to 10 knots becoming southwest 10 to 15 knots
early in the afternoon. partly sunny. waves 2 feet or less.
.friday night...southwest winds 10 to 15 knots becoming south 5 to
10 knots in the late evening and overnight. mostly cloudy early in
the evening becoming partly cloudy. waves 2 feet or less.
.saturday...southwest winds 5 to 10 knots increasing to 10 to 15
knots in the afternoon and evening. mostly sunny with a chance of
light showers in the morning...then mostly clear with a chance of
light showers in the afternoon and evening. waves 2 feet or less.
.sunday...north winds 10 to 15 knots. mostly cloudy with showers
likely. waves 2 feet or less.
.monday...north winds 10 to 15 knots. mostly clear. waves 2 feet or
less.

$$

fzus63 kdtx 061931
glflh 
expires:202605070345;;123716

open lake forecast for lake huron
national weather service detroit/pontiac mi
331 pm edt wed may 6 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...light winds over the next several days as broad high
pressure builds into the ohio valley and southern great lakes
thursday into friday.


lhz361-362-070345-
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-
331 pm edt wed may 6 2026

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


$$

fzus63 kdtx 061931
glflh 
expires:202605070345;;123717

open lake forecast for lake huron
national weather service detroit/pontiac mi
331 pm edt wed may 6 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...light winds over the next several days as broad high
pressure builds into the ohio valley and southern great lakes
thursday into friday.


lhz363-462>464-070345-
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-
331 pm edt wed may 6 2026

.tonight...east winds 5 to 10 knots early in the evening becoming
light and variable. waves 2 feet or less. 
.thursday...light and variable winds becoming north 5 to 10 knots
late in the afternoon. waves 2 feet or less. 
.thursday night...east winds 5 to 10 knots veering to the south
after midnight. waves 2 feet or less. 
.friday...southwest winds 5 to 10 knots backing to the south
early in the afternoon. waves 2 feet or less. 
.friday night...southeast winds 5 to 10 knots backing to the east
by midnight...then veering to the south after midnight. waves
2 feet or less. 
.saturday...south winds 10 to 15 knots decreasing to 5 to
10 knots late in the afternoon...then backing to the south 5 to
10 knots late in the evening. a chance of showers. waves 2 to
4 feet subsiding to 1 to 3 feet late in the evening. 
.sunday...northwest winds 5 to 10 knots veering to the north
until early evening...then becoming northwest 10 to 15 knots by
midnight. a chance of showers early in the morning. a chance of
showers early in the evening. waves 2 feet or less building to
4 to 6 feet by midnight. waves occasionally around 8 feet. 
.monday...northwest winds 10 to 15 knots. waves 3 to 5 feet
subsiding to 1 to 3 feet by midnight. 


$$

fzus63 kdtx 061355
glflh 
expires:202605062200;;109228

open lake forecast for lake huron
national weather service detroit/pontiac mi
955 am edt wed may 6 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...light winds over the next several days as broad high
pressure builds into the ohio valley and southern great lakes
thursday into friday


lhz462>464-062200-
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-
955 am edt wed may 6 2026

.rest of today...north winds 5 to 10 knots. waves 1 to 3 feet. 
.tonight...northeast winds 5 to 10 knots early in the evening
becoming light and variable. waves 2 feet or less. 
.thursday...light and variable winds becoming southeast 5 to
10 knots early in the afternoon. waves 2 feet or less. 
.thursday night...north winds 5 to 10 knots backing to the
southwest in the late evening and overnight. waves 2 feet or
less. 
.friday...southwest winds 5 to 10 knots backing to the south.
waves 2 feet or less. 
.saturday...south winds 5 to 10 knots becoming southwest 10 to
15 knots. a chance of showers. waves 1 to 3 feet. 
.sunday...northwest winds 5 to 10 knots becoming 10 to 15 knots
by midnight. a chance of showers early in the morning. waves
2 feet or less. 


$$

fzus63 kdtx 061355
glflh 
expires:202605062200;;109227

open lake forecast for lake huron
national weather service detroit/pontiac mi
955 am edt wed may 6 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...light winds over the next several days as broad high
pressure builds into the ohio valley and southern great lakes
thursday into friday


lhz363-062200-
lake huron from sturgeon point to alabaster mi beyond 5nm off
shore-
955 am edt wed may 6 2026

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


$$

fzus63 kmkx 061942
glflm 
expires:202605070315;;124107

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
242 pm cdt wed may 6 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 around 30.0 inches will continue to work south-
southeastward across the central plains this evening with light 
and variable winds continuing over lake michigan. southerly winds 
will develop for thursday and continue through saturday as the 
high pressure slides further southeast across the lower 
mississippi river valley. however, winds will then increase ahead 
of a developing low pressure around 29.5 inches tracking north of 
the great lakes into quebec for saturday before dragging a cold 
front southward across lake michigan later in the day. winds 
shift to the north-northwest behind the front for sunday while 
high pressure around 30.2 inches builds down across the region 
into the start of next week.


lmz080-669-671-673-675-777-779-870-872-874-876-878-070315-
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-
242 pm cdt wed may 6 2026

sheboygan wi to pentwater mi south...

.tonight...southwest winds 10 to 15 kt becoming west 5 to 10 kt.
waves 1 to 2 ft. 
.thursday...west winds 10 to 15 kt backing to south. isolated
rain showers in the afternoon. waves 1 to 3 ft. 
.thursday night...south winds 10 to 15 kt becoming southwest 5 to
10 kt. waves 1 to 3 ft. 
.friday...southwest winds 10 to 15 kt becoming south. waves 1 to
3 ft. 
.friday night...south winds 10 to 15 kt becoming southwest 10 to
20 kt. waves 2 to 4 ft. 
.saturday...southwest winds 10 to 20 kt. waves 2 to 4 ft. 
.saturday night...west winds 10 to 20 kt becoming north 5 to
10 kt. chance of rain showers. waves 1 to 3 ft. 
.sunday...north winds 10 to 15 kt increasing to 15 to 25 kt.
chance of rain showers. waves 2 to 4 ft. 
.monday...north winds 10 to 15 kt becoming northeast 10 to 20 kt.
waves 1 to 3 ft.  

$$

fzus63 kmkx 061942
glflm 
expires:202605070315;;124106

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
242 pm cdt wed may 6 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 around 30.0 inches will continue to work south-
southeastward across the central plains this evening with light 
and variable winds continuing over lake michigan. southerly winds 
will develop for thursday and continue through saturday as the 
high pressure slides further southeast across the lower 
mississippi river valley. however, winds will then increase ahead 
of a developing low pressure around 29.5 inches tracking north of 
the great lakes into quebec for saturday before dragging a cold 
front southward across lake michigan later in the day. winds 
shift to the north-northwest behind the front for sunday while 
high pressure around 30.2 inches builds down across the region 
into the start of next week.


lmz261-362-364-366-563-565-567-868-070315-
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-
242 pm cdt wed may 6 2026

sheboygan wi to pentwater mi north...

.tonight...southwest winds 10 to 15 kt becoming west. waves 1 to
2 ft. 
.thursday...west winds 5 to 10 kt becoming southwest 10 to 15 kt
late in the morning, then increasing to 10 to 20 kt early in the
afternoon becoming southwest 10 to 20 kt late. isolated rain
showers in the afternoon. waves 1 to 3 ft. 
.thursday night...southwest winds 10 to 20 kt diminishing to 5 to
10 kt. waves 1 to 3 ft. 
.friday...southwest winds 10 to 15 kt becoming south 10 to 20 kt.
waves 1 to 3 ft. 
.friday night...south winds 10 to 20 kt. waves 3 to 5 ft. 
.saturday...southwest winds 15 to 25 kt. waves 2 to 4 ft. 
.saturday night...northwest winds 10 to 20 kt becoming north 5 to
10 kt. waves 1 to 3 ft. 
.sunday...northwest winds 10 to 15 kt becoming north 10 to 20 kt.
waves 1 to 2 ft. 
.monday...northwest winds 10 to 15 kt backing to southwest 10 to
20 kt. waves 1 to 2 ft.  

$$

fzus63 kmqt 062002
glfls 
expires:202605070800;;124729

open lake forecast for lake superior
national weather service marquette mi
401 pm edt wed may 6 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... 

expect weak high pressure ridging of 29.9 inches over lake superior 
tonight with 30.1 inch ridging upstream over the canadian prairies 
and southern plains. by thursday afternoon, lake superior is 
projected to be between a 29.4 inch low over hudson bay, a 29.4 inch 
low over the mouth of the st. lawrence river, a low of 29.7 inches 
over the black hills, a high of 30.1 inches over oklahoma, and a 
weak 29.9 inch high over the saskatchewan/manitoba line. the hudson 
bay and black hills lows work to pass a 29.7 inch trough over lake 
superior friday, strengthening to 29.6 inches by friday night into 
saturday before the lows consolidate over western quebec by late 
saturday. high pressure ridging builds back up to 30.1 inches over 
lake superior by sunday as the parent high strengthens over the 
canadian prairies and northern plains.



lsz162-070800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
401 pm edt wed may 6 2026 /301 pm cdt wed may 6 2026/

.late this afternoon...southwest winds 10 to 20 knots. waves 1 to
3 feet. 
.tonight...west winds 5 to 15 knots. waves subsiding to calm to
2 feet. 
.thursday...west winds 5 to 15 knots backing southwest in the
afternoon. waves calm to 2 feet. 
.thursday night...southwest winds 5 to 15 knots veering west
after midnight. waves calm to 2 feet. 
.friday...southwest winds 5 to 15 knots. waves building to 1 to
3 feet, then subsiding to calm to 2 feet. 
.friday night...west winds 5 to 15 knots. waves calm to 2 feet. 
.saturday...west winds 10 to 20 knots diminishing to 5 to
15 knots by mid afternoon. waves calm to 2 feet. 
.saturday night...northwest winds 5 to 15 knots increasing to
10 to 20 knots after midnight. waves calm to 2 feet. 
.sunday...west winds 5 to 15 knots veering north. waves calm to
2 feet. 
.monday...south winds 5 to 15 knots backing east. waves calm to
2 feet. 

$$

fzus63 kmqt 062002
glfls 
expires:202605070800;;124730

open lake forecast for lake superior
national weather service marquette mi
401 pm edt wed may 6 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... 

expect weak high pressure ridging of 29.9 inches over lake superior 
tonight with 30.1 inch ridging upstream over the canadian prairies 
and southern plains. by thursday afternoon, lake superior is 
projected to be between a 29.4 inch low over hudson bay, a 29.4 inch 
low over the mouth of the st. lawrence river, a low of 29.7 inches 
over the black hills, a high of 30.1 inches over oklahoma, and a 
weak 29.9 inch high over the saskatchewan/manitoba line. the hudson 
bay and black hills lows work to pass a 29.7 inch trough over lake 
superior friday, strengthening to 29.6 inches by friday night into 
saturday before the lows consolidate over western quebec by late 
saturday. high pressure ridging builds back up to 30.1 inches over 
lake superior by sunday as the parent high strengthens over the 
canadian prairies and northern plains.



lsz263-070800-
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 may 6 2026

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

$$

fzus63 kmqt 062002
glfls 
expires:202605070800;;124731

open lake forecast for lake superior
national weather service marquette mi
401 pm edt wed may 6 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... 

expect weak high pressure ridging of 29.9 inches over lake superior 
tonight with 30.1 inch ridging upstream over the canadian prairies 
and southern plains. by thursday afternoon, lake superior is 
projected to be between a 29.4 inch low over hudson bay, a 29.4 inch 
low over the mouth of the st. lawrence river, a low of 29.7 inches 
over the black hills, a high of 30.1 inches over oklahoma, and a 
weak 29.9 inch high over the saskatchewan/manitoba line. the hudson 
bay and black hills lows work to pass a 29.7 inch trough over lake 
superior friday, strengthening to 29.6 inches by friday night into 
saturday before the lows consolidate over western quebec by late 
saturday. high pressure ridging builds back up to 30.1 inches over 
lake superior by sunday as the parent high strengthens over the 
canadian prairies and northern plains.



lsz264-070800-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
401 pm edt wed may 6 2026

.late this afternoon...west winds 10 to 20 knots. waves 2 to
4 feet. 
.tonight...west winds 5 to 15 knots. waves subsiding to calm to
2 feet. 
.thursday...west winds 5 to 15 knots backing southwest late.
waves calm to 2 feet. 
.thursday night...southwest winds 5 to 15 knots. waves calm to
2 feet. 
.friday...southwest winds 5 to 15 knots increasing to 10 to
20 knots by mid afternoon. waves building to 1 to 3 feet. 
.friday night...southwest winds 5 to 15 knots. waves subsiding to
calm to 2 feet. 
.saturday...west winds 5 to 15 knots. waves calm to 2 feet. 
.saturday night...northwest winds 5 to 15 knots. waves calm to
2 feet. 
.sunday...northwest winds 5 to 15 knots. waves calm to 2 feet. 
.monday...northwest winds 5 to 15 knots backing southeast. waves
calm to 2 feet. 

$$

fzus63 kmqt 062002
glfls 
expires:202605070800;;124732

open lake forecast for lake superior
national weather service marquette mi
401 pm edt wed may 6 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... 

expect weak high pressure ridging of 29.9 inches over lake superior 
tonight with 30.1 inch ridging upstream over the canadian prairies 
and southern plains. by thursday afternoon, lake superior is 
projected to be between a 29.4 inch low over hudson bay, a 29.4 inch 
low over the mouth of the st. lawrence river, a low of 29.7 inches 
over the black hills, a high of 30.1 inches over oklahoma, and a 
weak 29.9 inch high over the saskatchewan/manitoba line. the hudson 
bay and black hills lows work to pass a 29.7 inch trough over lake 
superior friday, strengthening to 29.6 inches by friday night into 
saturday before the lows consolidate over western quebec by late 
saturday. high pressure ridging builds back up to 30.1 inches over 
lake superior by sunday as the parent high strengthens over the 
canadian prairies and northern plains.



lsz265-070800-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
401 pm edt wed may 6 2026

.late this afternoon...west winds 10 to 20 knots. waves calm to
2 feet. 
.tonight...west winds 10 to 20 knots. waves calm to 2 feet. 
.thursday...west winds 10 to 20 knots diminishing to 5 to
15 knots late. waves calm to 2 feet. 
.thursday night...south winds 5 to 15 knots becoming southwest
10 to 20 knots after midnight. waves calm to 2 feet. 
.friday...west winds 10 to 20 knots backing south by mid
afternoon. waves calm to 2 feet. 
.friday night...south winds 10 to 20 knots becoming southwest
15 to 25 knots after midnight. waves calm to 2 feet. 
.saturday...west winds 15 to 25 knots diminishing to 10 to
20 knots by mid afternoon. waves calm to 2 feet. 
.saturday night...northwest winds 10 to 20 knots backing west
after midnight. 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...northwest winds 5 to 15 knots backing southeast. waves
calm to 2 feet. 

$$

fzus63 kmqt 062002
glfls 
expires:202605070800;;124733

open lake forecast for lake superior
national weather service marquette mi
401 pm edt wed may 6 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... 

expect weak high pressure ridging of 29.9 inches over lake superior 
tonight with 30.1 inch ridging upstream over the canadian prairies 
and southern plains. by thursday afternoon, lake superior is 
projected to be between a 29.4 inch low over hudson bay, a 29.4 inch 
low over the mouth of the st. lawrence river, a low of 29.7 inches 
over the black hills, a high of 30.1 inches over oklahoma, and a 
weak 29.9 inch high over the saskatchewan/manitoba line. the hudson 
bay and black hills lows work to pass a 29.7 inch trough over lake 
superior friday, strengthening to 29.6 inches by friday night into 
saturday before the lows consolidate over western quebec by late 
saturday. high pressure ridging builds back up to 30.1 inches over 
lake superior by sunday as the parent high strengthens over the 
canadian prairies and northern plains.



lsz266-070800-
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 may 6 2026

.late this afternoon...west winds 10 to 20 knots. waves 1 to
3 feet. 
.tonight...west winds 10 to 20 knots diminishing to 5 to 15 knots
after midnight. waves subsiding to calm to 2 feet. 
.thursday...west winds 5 to 15 knots. waves calm to 2 feet. 
.thursday night...west winds 5 to 15 knots backing southwest
after midnight, then increasing to 10 to 20 knots late. waves
calm to 2 feet. 
.friday...west winds 10 to 20 knots becoming south 5 to 15 knots
by mid afternoon. waves calm to 2 feet. 
.friday night...south winds 10 to 20 knots. waves building to
1 to 3 feet. 
.saturday...west winds 10 to 20 knots. waves 1 to 3 feet. 
.saturday night...northwest winds 10 to 20 knots. waves subsiding
to calm to 2 feet. 
.sunday...northwest winds 10 to 20 knots. waves building to 2 to
4 feet, then subsiding to 1 to 3 feet. 
.monday...northwest winds 5 to 15 knots backing south. waves
subsiding to calm to 2 feet. 

$$

fzus63 kmqt 062002
glfls 
expires:202605070800;;124734

open lake forecast for lake superior
national weather service marquette mi
401 pm edt wed may 6 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... 

expect weak high pressure ridging of 29.9 inches over lake superior 
tonight with 30.1 inch ridging upstream over the canadian prairies 
and southern plains. by thursday afternoon, lake superior is 
projected to be between a 29.4 inch low over hudson bay, a 29.4 inch 
low over the mouth of the st. lawrence river, a low of 29.7 inches 
over the black hills, a high of 30.1 inches over oklahoma, and a 
weak 29.9 inch high over the saskatchewan/manitoba line. the hudson 
bay and black hills lows work to pass a 29.7 inch trough over lake 
superior friday, strengthening to 29.6 inches by friday night into 
saturday before the lows consolidate over western quebec by late 
saturday. high pressure ridging builds back up to 30.1 inches over 
lake superior by sunday as the parent high strengthens over the 
canadian prairies and northern plains.



lsz267-070800-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
401 pm edt wed may 6 2026

.late this afternoon...west winds 10 to 20 knots. waves 1 to
3 feet. 
.tonight...west winds 5 to 15 knots increasing to 10 to 20 knots
after midnight. waves subsiding to calm to 2 feet. 
.thursday...west winds 5 to 15 knots. waves calm to 2 feet. 
.thursday night...west winds 5 to 15 knots backing southwest
after midnight. waves calm to 2 feet. 
.friday...west winds 10 to 20 knots becoming southwest 5 to
15 knots by mid afternoon. waves calm to 2 feet. 
.friday night...south winds 5 to 15 knots increasing to 10 to
20 knots after midnight. waves building to 1 to 3 feet. 
.saturday...southwest winds 10 to 20 knots veering west by mid
afternoon. waves 1 to 3 feet. 
.saturday night...northwest winds 10 to 20 knots diminishing to
5 to 15 knots after midnight. waves subsiding to calm to 2 feet. 
.sunday...northwest winds 10 to 20 knots. waves building to 2 to
4 feet, then subsiding to 1 to 3 feet. 
.monday...northwest winds 5 to 15 knots. waves subsiding to calm
to 2 feet. 

$$