fzus61 kbuf 061402
glflo 
expires:202605062100;;109485

open lake forecast for lake ontario
national weather service buffalo ny
1002 am 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 29.2 inch low over hudson bay will weaken to 29.3 
inches as it moves to northern quebec today. 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.


loz062-062100-
lake ontario open waters from the niagara river to hamlin beach-
1002 am edt wed may 6 2026

.rest of today...northeast winds 5 to 15 knots becoming
northwest. a chance of showers. waves 1 to 2 feet. 
.tonight...west winds 10 knots or less becoming northwest. waves
1 foot or less. 
.thursday...northwest winds 10 knots or less becoming southwest.
waves 1 foot or less. 
.thursday night...southwest winds 5 to 10 knots. waves 1 foot or
less. 
.friday...southwest winds 5 to 15 knots. a chance of showers
friday night. waves 1 to 2 feet. 
.saturday...south winds 5 to 15 knots becoming southwest. a
chance of showers. waves 1 to 3 feet. 
.sunday...west winds 5 to 10 knots becoming northwest. a chance
of showers. waves 1 to 2 feet. 

$$

fzus61 kbuf 061402
glflo 
expires:202605062100;;109486

open lake forecast for lake ontario
national weather service buffalo ny
1002 am 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 29.2 inch low over hudson bay will weaken to 29.3 
inches as it moves to northern quebec today. 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.


loz063>065-062100-
lake ontario open waters from hamlin beach to the saint lawrence
river-
1002 am edt wed may 6 2026

.rest of today...northeast winds 10 to 15 knots becoming
northwest. showers late this morning, then a chance of showers
early this afternoon. waves 1 to 3 feet. 
.tonight...west winds 5 to 15 knots. waves 2 feet or less. 
.thursday...west winds 5 to 10 knots increasing to 15 to
20 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 south. a chance of
showers friday night. waves 2 feet or less. 
.saturday...south winds 5 to 15 knots increasing to 15 to
20 knots. a chance of showers. waves 1 to 3 feet. 
.sunday...southwest winds 5 to 15 knots becoming northwest. a
chance of showers. waves 1 to 3 feet. 

$$

fzus61 kcle 061407
glfle 
expires:202605062015;;109650

open lake forecast for lake erie
national weather service cleveland oh
1007 am 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 today 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>169-062015-
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-
1007 am edt wed may 6 2026

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

$$

fzus61 kcle 061407
glfle 
expires:202605062015;;109649

open lake forecast for lake erie
national weather service cleveland oh
1007 am 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 today 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>166-062015-
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-
1007 am edt wed may 6 2026

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

$$

fzus63 kdtx 061355
glflh 
expires:202605062200;;109226

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


lhz361-362-062200-
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-
955 am edt wed may 6 2026

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


$$

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 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 061354
glfsc 
expires:202605062200;;109164

lake st clair forecast
national weather service detroit/pontiac mi
954 am 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


lcz460-062200-
lake st clair-
954 am edt wed may 6 2026

.rest of today...northwest winds 5 to 10 knots. partly sunny. waves
2 feet or less.
.tonight...northwest winds 10 to 15 knots diminishing to 5 to 10
knots early in the morning. mostly cloudy in the evening then
clearing. waves 2 feet or less.
.thursday...northwest winds 5 to 10 knots backing to the southwest
in the late morning and early afternoon...then becoming west 10 to
15 knots early in the afternoon. sunny until late afternoon becoming
mostly cloudy. 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. waves 2
feet or less.
.friday...southwest winds 5 to 10 knots increasing to 10 to 15 knots
in the afternoon...then diminishing to 5 to 10 knots in the evening.
partly sunny in the morning becoming mostly cloudy. a chance of
light showers in the afternoon and evening. waves 2 feet or less.
.saturday...southwest winds 10 to 15 knots. partly cloudy. a chance
of light showers. waves 2 feet or less.
.sunday...northeast winds 10 to 15 knots. mostly cloudy with a
chance of showers. waves 2 feet or less.

$$

fzus63 kmkx 061331
glflm 
expires:202605062115;;108736

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
831 am 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 slide southward
into the central plains today, bringing light and variable winds 
to lake michigan. south winds should then develop thursday, with 
south to southwest winds continuing through saturday, as high 
pressure around 30.0 inches remains across the central plains. low
pressure around 29.5 inches should move southeast across portions
of the region saturday into saturday night. a passing cold front 
with the low will turn winds northwesterly saturday night into 
sunday. high pressure around 30.2 inches should then build into 
the western great lakes region later sunday into monday.


lmz261-362-364-366-563-565-567-868-062115-
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-
831 am cdt wed may 6 2026

sheboygan wi to pentwater mi north...

.rest of today...northwest winds 10 to 15 kt backing to southwest
10 to 20 kt. waves 1 to 3 ft. 
.tonight...southwest winds 10 to 15 kt becoming west late in the
evening, then becoming southwest after midnight becoming west
late. 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. waves 1 to 3 ft. 
.thursday night...southwest winds 10 to 20 kt diminishing to 5 to
10 kt overnight. 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 2 to 4 ft. 
.saturday...southwest winds 15 to 25 kt. chance of rain showers.
waves 3 to 5 ft. 
.sunday...northwest winds 10 to 15 kt increasing to 10 to 20 kt.
waves 1 to 3 ft.  

$$

fzus63 kmkx 061331
glflm 
expires:202605062115;;108737

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
831 am 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 slide southward
into the central plains today, bringing light and variable winds 
to lake michigan. south winds should then develop thursday, with 
south to southwest winds continuing through saturday, as high 
pressure around 30.0 inches remains across the central plains. low
pressure around 29.5 inches should move southeast across portions
of the region saturday into saturday night. a passing cold front 
with the low will turn winds northwesterly saturday night into 
sunday. high pressure around 30.2 inches should then build into 
the western great lakes region later sunday into monday.


lmz080-669-671-673-675-777-779-870-872-874-876-878-062115-
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-
831 am cdt wed may 6 2026

sheboygan wi to pentwater mi south...

.rest of today...northwest winds 5 to 10 kt backing to south
10 to 15 kt. waves 1 to 2 ft. 
.tonight...southwest winds 10 to 15 kt becoming west 5 to 10 kt.
waves 1 to 2 ft. 
.thursday...west winds 5 to 10 kt backing to south 10 to 15 kt.
waves 1 to 2 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. chance of
rain showers. 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 3 to 5 ft. 
.sunday...north winds 10 to 20 kt. waves 2 to 4 ft.  

$$

fzus63 kmqt 061402
glfls 
expires:202605062000;;109477

open lake forecast for lake superior
national weather service marquette mi
1001 am 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... 

30.2 inch ridging over the canadian prairies splits today and moves 
to the canadian four corners and the southern plains at 30.0 inches 
and 30.2 inches, respectively. as this happens, expect weak high 
pressure ridging of 29.9 inches to settle over lake superior. 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.



lsz162-062000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1001 am edt wed may 6 2026 /901 am cdt wed may 6 2026/

.rest of today...west winds 10 to 20 knots backing southwest
late. a chance of rain and snow showers. waves calm to 2 feet
building to 1 to 3 feet. 
.tonight...west winds 5 to 15 knots. sprinkles through midnight.
waves subsiding to calm to 2 feet. 
.thursday...west winds 5 to 15 knots backing southwest in the
afternoon. waves building to 1 to 3 feet, then subsiding to calm
to 2 feet. 
.thursday night...west winds 5 to 15 knots. waves calm to 2 feet.
.friday...southwest winds 5 to 15 knots. waves calm to 2 feet. 
.friday night...west winds 5 to 15 knots veering northwest after
midnight. waves calm to 2 feet. 
.saturday...west winds 10 to 20 knots veering northwest. waves
calm to 2 feet. 
.sunday...west winds 5 to 15 knots veering northwest. waves calm
to 2 feet. 

$$

fzus63 kmqt 061402
glfls 
expires:202605062000;;109478

open lake forecast for lake superior
national weather service marquette mi
1001 am 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... 

30.2 inch ridging over the canadian prairies splits today and moves 
to the canadian four corners and the southern plains at 30.0 inches 
and 30.2 inches, respectively. as this happens, expect weak high 
pressure ridging of 29.9 inches to settle over lake superior. 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.



lsz263-062000-
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-
1001 am edt wed may 6 2026

.rest of today...west winds 5 to 15 knots increasing to 10 to
20 knots in the afternoon. a chance of rain and snow showers.
waves 1 to 3 feet building to 2 to 4 feet. 
.tonight...west winds 5 to 15 knots. a chance of rain showers
through midnight. waves subsiding to calm to 2 feet. 
.thursday...west winds 5 to 15 knots becoming southwest 10 to
20 knots in the afternoon. 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...west winds 5 to 15 knots becoming southwest 10 to
20 knots by mid afternoon. waves building 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 veering northwest. waves
building to 1 to 3 feet. 
.sunday...west winds 5 to 15 knots veering northwest. waves
subsiding to calm to 2 feet. 

$$

fzus63 kmqt 061402
glfls 
expires:202605062000;;109479

open lake forecast for lake superior
national weather service marquette mi
1001 am 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... 

30.2 inch ridging over the canadian prairies splits today and moves 
to the canadian four corners and the southern plains at 30.0 inches 
and 30.2 inches, respectively. as this happens, expect weak high 
pressure ridging of 29.9 inches to settle over lake superior. 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.



lsz264-062000-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
1001 am edt wed may 6 2026

.rest of today...west winds 5 to 15 knots increasing to 10 to
20 knots in the afternoon. sprinkles and flurries by mid
afternoon. waves 1 to 3 feet building to 2 to 4 feet. 
.tonight...west winds 5 to 15 knots diminishing to less than
10 knots late. sprinkles and flurries through midnight. waves
subsiding to calm to 2 feet. 
.thursday...west winds 5 to 15 knots backing southwest in the
afternoon. a slight chance of snow showers by mid afternoon.
waves calm to 2 feet. 
.thursday night...southwest winds 5 to 15 knots. waves calm to
2 feet. 
.friday...west winds 5 to 15 knots backing southwest by mid
afternoon. waves building to 1 to 3 feet. 
.friday night...south winds 5 to 15 knots veering southwest after
midnight. waves subsiding to calm to 2 feet. 
.saturday...west winds 5 to 15 knots veering northwest. waves
building to 1 to 3 feet. 
.sunday...west winds 5 to 15 knots veering northwest. waves
subsiding to calm to 2 feet. 

$$

fzus63 kmqt 061402
glfls 
expires:202605062000;;109480

open lake forecast for lake superior
national weather service marquette mi
1001 am 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... 

30.2 inch ridging over the canadian prairies splits today and moves 
to the canadian four corners and the southern plains at 30.0 inches 
and 30.2 inches, respectively. as this happens, expect weak high 
pressure ridging of 29.9 inches to settle over lake superior. 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.



lsz265-062000-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
1001 am edt wed may 6 2026

.rest of today...west winds 10 to 20 knots increasing to 15 to
25 knots in the afternoon. 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 in the afternoon. 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 veering southwest
after midnight. waves calm to 2 feet. 
.saturday...west winds 15 to 25 knots veering northwest. a chance
of rain showers. waves building to 1 to 3 feet, then subsiding to
calm to 2 feet. 
.sunday...northwest winds 15 to 25 knots becoming west 10 to
20 knots. waves building to 2 to 4 feet, then subsiding to calm
to 2 feet. 

$$

fzus63 kmqt 061402
glfls 
expires:202605062000;;109481

open lake forecast for lake superior
national weather service marquette mi
1001 am 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... 

30.2 inch ridging over the canadian prairies splits today and moves 
to the canadian four corners and the southern plains at 30.0 inches 
and 30.2 inches, respectively. as this happens, expect weak high 
pressure ridging of 29.9 inches to settle over lake superior. 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.



lsz266-062000-
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-
1001 am edt wed may 6 2026

.rest of today...west winds 10 to 20 knots increasing to 15 to
25 knots in the afternoon, then diminishing to 10 to 20 knots
late. waves 1 to 3 feet. 
.tonight...west winds 5 to 15 knots increasing to 10 to 20 knots
after midnight, then diminishing to 5 to 15 knots late. waves
subsiding to calm to 2 feet. 
.thursday...west winds 5 to 15 knots. 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 5 to 15 knots backing southwest by mid
afternoon. waves calm to 2 feet. 
.friday night...south winds 10 to 20 knots veering southwest
after midnight. waves building to 1 to 3 feet. 
.saturday...west winds 10 to 20 knots becoming northwest 15 to
25 knots. a chance of rain showers. waves building to 2 to
4 feet, then subsiding to 1 to 3 feet. 
.sunday...northwest winds 15 to 25 knots diminishing to 10 to
20 knots. waves subsiding to calm to 2 feet. 

$$

fzus63 kmqt 061402
glfls 
expires:202605062000;;109482

open lake forecast for lake superior
national weather service marquette mi
1001 am 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... 

30.2 inch ridging over the canadian prairies splits today and moves 
to the canadian four corners and the southern plains at 30.0 inches 
and 30.2 inches, respectively. as this happens, expect weak high 
pressure ridging of 29.9 inches to settle over lake superior. 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.



lsz267-062000-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
1001 am edt wed may 6 2026

.rest of today...west winds 10 to 20 knots. waves 1 to 3 feet. 
.tonight...west winds 10 to 20 knots. waves subsiding to 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...southwest winds 5 to 15 knots backing south
after midnight. waves calm to 2 feet. 
.friday...southwest winds 5 to 15 knots veering west 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...west winds 10 to 20 knots veering northwest. a chance
of rain showers. waves building to 2 to 4 feet. 
.sunday...northwest winds 15 to 25 knots diminishing to 10 to
20 knots. waves building to 3 to 5 feet occasionally to 7 feet,
then subsiding to 1 to 3 feet. 

$$