fzus61 kbuf 052002
glflo 
expires:202605060300;;070482

open lake forecast for lake ontario
national weather service buffalo ny
402 pm edt tue may 5 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 this evening will weaken 
to 29.3 inches as it moves to northern quebec through wednesday. a 
trailing wavy cold front will slowly cross the lake through tonight, 
then drift across new england wednesday and out to sea thursday. a 
30.1 inch high over the tennessee and ohio valleys thursday night 
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>065-060300-
lake ontario open waters from hamlin beach to the saint lawrence
river-
402 pm edt tue may 5 2026

.tonight...west winds 15 to 25 knots becoming southeast and
diminishing to 10 knots or less after midnight. showers likely
with a chance of thunderstorms early, then showers late this
evening. rain after midnight. waves 4 to 7 feet subsiding to 1 to
3 feet. waves occasionally around 9 feet. 
.wednesday...northeast winds 5 to 10 knots becoming west. rain
early, then showers likely late in the morning. waves 2 feet or
less. 
.wednesday night...west winds 5 to 10 knots. waves 2 feet or
less. 
.thursday...west winds 5 to 15 knots. waves 1 to 2 feet. 
.thursday night...west winds 10 to 15 knots. waves 1 to 2 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 becoming southwest. a
chance of showers. waves 1 to 2 feet. 
.sunday...southwest winds 5 to 15 knots becoming northwest. a
chance of showers. waves 1 to 2 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kbuf 052002
glflo 
expires:202605060300;;070481

open lake forecast for lake ontario
national weather service buffalo ny
402 pm edt tue may 5 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 this evening will weaken 
to 29.3 inches as it moves to northern quebec through wednesday. a 
trailing wavy cold front will slowly cross the lake through tonight, 
then drift across new england wednesday and out to sea thursday. a 
30.1 inch high over the tennessee and ohio valleys thursday night 
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.


loz062-060300-
lake ontario open waters from the niagara river to hamlin beach-
402 pm edt tue may 5 2026

.tonight...southwest winds 15 to 25 knots becoming east and
diminishing to 5 to 10 knots after midnight. showers with a
chance of thunderstorms early, then showers from late evening on.
waves 3 to 6 feet subsiding to 1 to 2 feet. 
.wednesday...east winds 10 knots or less becoming southwest.
showers early, then a chance of showers late in the morning.
waves 1 foot or less. 
.wednesday night...west winds 5 to 10 knots becoming northwest.
waves 1 foot or less. 
.thursday...west winds 5 to 10 knots. waves 1 foot or less. 
.thursday night...west winds 5 to 10 knots. waves around 1 foot. 
.friday...west winds 5 to 10 knots becoming southwest. a chance
of showers friday night. waves 1 to 2 feet. 
.saturday...southwest winds 5 to 15 knots. a chance of showers.
waves 1 to 2 feet. 
.sunday...southwest winds 5 to 10 knots becoming northwest. a
chance of showers. waves 1 to 2 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 051944
glfle 
expires:202605060215;;070058

open lake forecast for lake erie
national weather service cleveland oh
344 pm edt tue may 5 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 cold front and low pressure 29.70 inches will move east of lake
erie tonight, allowing high pressure 30.10 inches to slowly 
expand east across the region wednesday through early friday. low
pressure 29.70 inches will move east across the great lakes friday
into saturday, pushing a cold front east across the lake. low 
pressure 29.80 inches accompanied by a cold front will move east 
across lake erie on sunday.


lez162>166-060215-
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-
344 pm edt tue may 5 2026

.tonight...northwest winds 5 to 15 knots becoming north. rain
with a slight chance of thunderstorms early, then rain from late
evening on. waves 2 feet or less. 
.wednesday...north winds 5 to 10 knots becoming west. a chance of
rain early, then a slight chance of showers late in the morning.
a slight chance of showers late. waves 1 foot or less. 
.wednesday night...southwest winds 5 to 15 knots becoming
northwest. waves 2 feet or less. 
.thursday...northwest winds 5 to 10 knots becoming west. waves
2 feet or less. 
.thursday night...west winds around 10 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...southwest winds 5 to 15 knots becoming north. showers
likely during the day, then a chance of showers sunday night.
waves 1 to 2 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 051944
glfle 
expires:202605060215;;070059

open lake forecast for lake erie
national weather service cleveland oh
344 pm edt tue may 5 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 cold front and low pressure 29.70 inches will move east of lake
erie tonight, allowing high pressure 30.10 inches to slowly 
expand east across the region wednesday through early friday. low
pressure 29.70 inches will move east across the great lakes friday
into saturday, pushing a cold front east across the lake. low 
pressure 29.80 inches accompanied by a cold front will move east 
across lake erie on sunday.


lez061-167>169-060215-
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-
344 pm edt tue may 5 2026

.tonight...west winds 5 to 10 knots becoming north. rain with a
slight chance of thunderstorms early, then rain from late evening
on. waves 2 to 4 feet subsiding to 1 to 3 feet. 
.wednesday...north winds 5 to 10 knots becoming west. rain early,
then a slight chance of showers late in the morning. a slight
chance of showers late. waves 1 foot or less. 
.wednesday night...southwest winds 5 to 10 knots becoming
northwest. waves 1 foot or less. 
.thursday...north winds 5 to 10 knots becoming west. waves 1 foot
or less. 
.thursday night...west winds 5 to 10 knots. waves 1 to 2 feet. 
.friday...southwest winds 5 to 10 knots. a chance of showers
during the day, then showers likely friday night. waves 1 to
2 feet. 
.saturday...southwest winds 5 to 10 knots. a chance of showers
saturday night. waves 1 to 2 feet. 
.sunday...southwest winds 5 to 10 knots becoming north. showers
likely during the day, then a chance of showers sunday night.
waves 1 to 2 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus63 kdtx 051956
glflh 
expires:202605060400;;070218

open lake forecast for lake huron
national weather service detroit/pontiac mi
356 pm edt tue may 5 2026

for waters beyond five nautical miles off shore on lake huron

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

.synopsis...a cold front clear the central great lakes this
evening. broad high pressure then builds into the ohio valley and
southern great lakes thursday into friday.


lhz361-362-060400-
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-
356 pm edt tue may 5 2026

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


$$

fzus63 kdtx 051956
glflh 
expires:202605060400;;070220

open lake forecast for lake huron
national weather service detroit/pontiac mi
356 pm edt tue may 5 2026

for waters beyond five nautical miles off shore on lake huron

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

.synopsis...a cold front clear the central great lakes this
evening. broad high pressure then builds into the ohio valley and
southern great lakes thursday into friday.


lhz462>464-060400-
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-
356 pm edt tue may 5 2026

.tonight...southeast winds 5 to 10 knots backing to the north in
the late evening and overnight. waves 2 feet or less. 
.wednesday...north winds 5 to 10 knots. waves 2 feet or less. 
.wednesday night...northeast winds 5 to 10 knots  becoming light
and variable. waves 2 feet or less. 
.thursday...light and variable winds becoming east 5 to 10 knots
early in the afternoon. waves 2 feet or less. 
.thursday night...east 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 south late
in the afternoon. a chance of showers late in the afternoon.
waves 2 feet or less. 
.saturday...southwest winds 5 to 10 knots becoming south 10 to
15 knots early in the evening...then becoming west 5 to 10 knots
by midnight. a chance of showers. waves 2 feet or less. 
.sunday...west winds 5 to 10 knots veering to the north. a chance
of showers. waves 2 feet or less. 


$$

fzus63 kdtx 051956
glflh 
expires:202605060400;;070219

open lake forecast for lake huron
national weather service detroit/pontiac mi
356 pm edt tue may 5 2026

for waters beyond five nautical miles off shore on lake huron

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

.synopsis...a cold front clear the central great lakes this
evening. broad high pressure then builds into the ohio valley and
southern great lakes thursday into friday.


lhz363-060400-
lake huron from sturgeon point to alabaster mi beyond 5nm off
shore-
356 pm edt tue may 5 2026

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


$$

fzus63 kdtx 051954
glfsc 
expires:202605060400;;070202

lake st clair forecast
national weather service detroit/pontiac mi
354 pm edt tue may 5 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...a cold front clear the central great lakes this
evening. broad high pressure then builds into the ohio valley and
southern great lakes thursday into friday.


lcz460-060400-
lake st clair-
354 pm edt tue may 5 2026

.tonight...southwest winds 5 to 10 knots veering to the northwest
after midnight. mostly cloudy. a chance of light showers . waves 2
feet or less.
.wednesday...north winds 5 to 10 knots backing to the west late in
the afternoon. partly sunny. waves 2 feet or less.
.wednesday night...northwest winds 5 to 10 knots. mostly cloudy
early in the evening becoming partly cloudy. waves 2 feet or less.
.thursday...northwest winds 5 to 10 knots backing to the west in the
late morning and afternoon. mostly sunny until late afternoon
becoming mostly cloudy. waves 2 feet or less.
.thursday night...west winds 10 to 15 knots diminishing to 5 to 10
knots in the late evening and overnight. mostly clear. waves 2 feet
or less.
.friday...southwest winds 10 to 15 knots. 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 showers. waves 2 feet or less.
.sunday...north winds 10 to 15 knots. partly cloudy. showers likely.
waves 2 feet or less.

$$

fzus63 kdtx 051343
glflh 
expires:202605052200;;054843

open lake forecast for lake huron
national weather service detroit/pontiac mi
943 am edt tue may 5 2026

for waters beyond five nautical miles off shore on lake huron

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

.synopsis...a cold front will ease across western lake erie into
the lower great lakes this evening. low pressure will develop
along this front over the ohio valley, causing wind over the
central great lakes to organize out of the northeast on
wednesday. broad high pressure then builds into the ohio valley
and southern great lakes thursday into friday.


lhz361-052200-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
943 am edt tue may 5 2026

.rest of today...west winds 10 to 15 knots. waves 2 to 4 feet. 
.tonight...west winds 10 to 15 knots becoming northwest 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...west winds 5 to 10 knots increasing to 10 to
15 knots in the late morning and afternoon. waves 1 to 3 feet. 
.wednesday night...west winds 10 to 15 knots becoming northwest
5 to 10 knots in the late evening and overnight. waves 1 to
3 feet. 
.thursday...west winds 5 to 10 knots. waves 2 feet or less. 
.friday...southwest winds 5 to 10 knots backing to the east early
in the evening...then veering to the south by midnight. waves
2 feet or less. 
.saturday...west winds 5 to 10 knots becoming southwest 10 to
15 knots early in the evening...then decreasing to 5 to 10 knots
by midnight. waves 2 feet or less. 


$$

fzus63 kdtx 051343
glflh 
expires:202605052200;;054844

open lake forecast for lake huron
national weather service detroit/pontiac mi
943 am edt tue may 5 2026

for waters beyond five nautical miles off shore on lake huron

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

.synopsis...a cold front will ease across western lake erie into
the lower great lakes this evening. low pressure will develop
along this front over the ohio valley, causing wind over the
central great lakes to organize out of the northeast on
wednesday. broad high pressure then builds into the ohio valley
and southern great lakes thursday into friday.


lhz362-363-052200-
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-
943 am edt tue may 5 2026

.rest of today...southwest winds 5 to 10 knots. waves 2 to
4 feet. 
.tonight...north winds 5 to 10 knots. waves 2 to 4 feet subsiding
to 1 to 3 feet in the late evening and overnight. 
.wednesday...north winds 5 to 10 knots. waves 2 feet or less. 
.wednesday night...north winds 5 to 10 knots backing to the
northwest after midnight. waves 1 to 3 feet. 
.thursday...west winds 5 to 10 knots backing to the southwest
late in the morning...then backing to the southeast late in the
afternoon veering to the southwest late in the evening. waves
2 feet or less. 
.friday...southwest winds 5 to 10 knots backing to the southeast
early in the evening...then veering to the south by midnight.
waves 2 feet or less. 
.saturday...southwest winds 5 to 10 knots. waves 1 to 3 feet. 


$$

fzus63 kmkx 051909
glflm 
expires:202605060315;;068728

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
209 pm cdt tue may 5 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 29.9 inches continues to slide southward
into the central plains today, bringing light and variable winds
to lake michigan throughout today and wednesday. thursday, weak
low pressure around 29.7 inches slides southeastward through
wisconsin, bringing southerly breezes to the lake. south-
southwest winds continue through the end of the week as high
pressure remains across the central plains and multiple weak low
pressure systems move eastward through northern canada. a cold
front will turn winds northwesterly saturday night into sunday
as strong high pressure builds into the western great lakes
region.


lmz080-669-671-673-675-777-779-870-872-874-876-878-060315-
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-
209 pm cdt tue may 5 2026

sheboygan wi to pentwater mi south...

.tonight...south winds 10 to 15 kt veering to northwest 5 to
10 kt. waves 1 to 2 ft. 
.wednesday...northwest winds 5 to 10 kt veering to east 10 to
15 kt. waves 1 to 2 ft. 
.wednesday night...south winds 5 to 10 kt veering to west. waves
1 to 2 ft. 
.thursday...west winds 5 to 10 kt becoming southwest 10 to 15 kt.
waves 1 to 2 ft. 
.thursday night...south winds 10 to 15 kt becoming southwest.
waves 1 to 3 ft. 
.friday...southwest winds 10 to 20 kt becoming south. waves 1 to
3 ft. 
.friday night...southwest winds 10 to 15 kt. waves 1 to 3 ft. 
.saturday...southwest winds 10 to 20 kt. waves 1 to 3 ft. 
.sunday...north winds 10 to 15 kt increasing to 10 to 20 kt.
chance of rain showers. waves 1 to 3 ft.  

$$

fzus63 kmkx 051909
glflm 
expires:202605060315;;068727

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
209 pm cdt tue may 5 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 29.9 inches continues to slide southward
into the central plains today, bringing light and variable winds
to lake michigan throughout today and wednesday. thursday, weak
low pressure around 29.7 inches slides southeastward through
wisconsin, bringing southerly breezes to the lake. south-
southwest winds continue through the end of the week as high
pressure remains across the central plains and multiple weak low
pressure systems move eastward through northern canada. a cold
front will turn winds northwesterly saturday night into sunday
as strong high pressure builds into the western great lakes
region.


lmz261-362-364-366-563-565-567-868-060315-
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-
209 pm cdt tue may 5 2026

sheboygan wi to pentwater mi north...

.tonight...west winds 10 to 20 kt becoming north 10 to 15 kt late
this evening, then becoming northeast after midnight becoming
northwest 5 to 10 kt late. waves 1 to 3 ft. 
.wednesday...northwest winds 5 to 10 kt backing to southwest
10 to 15 kt. waves 1 to 2 ft. 
.wednesday night...southwest winds 10 to 15 kt becoming west 5 to
10 kt. waves 1 to 2 ft. 
.thursday...southwest winds 10 to 15 kt. waves 1 to 2 ft. 
.thursday night...south winds 10 to 15 kt diminishing to 5 to
10 kt. waves 1 to 2 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. waves
1 to 3 ft. 
.saturday...southwest winds 10 to 20 kt. waves 1 to 2 ft. 
.sunday...northwest winds 10 to 15 kt increasing to 10 to 20 kt.
waves 1 to 3 ft.  

$$

fzus63 kmqt 052001
glfls 
expires:202605060800;;070434

open lake forecast for lake superior
national weather service marquette mi
401 pm edt tue may 5 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...

a 29.3 inch low over james bay lifts into northern quebec this 
evening and tonight as 30.2 inch ridging builds east of the canadian 
rockies. wednesday, the high pressure over the canadian prairie 
splits and moves to the canadian four corners and the southern 
plains at 30.0 inches and 30.2 inches respectively. by thursday 
afternoon, lake superior is projected to be between a 29.5 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 29.8 inch trough over lake superior thursday night into 
friday, with the lows consolidating over quebec by saturday, leaving 
remnant 29.7 inch troughing over lake superior. high pressure toi 
30.1 inches builds back over the plains by sunday.



lsz162-060800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
401 pm edt tue may 5 2026 /301 pm cdt tue may 5 2026/

.late this afternoon...west winds 10 to 20 knots. sprinkles.
waves 1 to 3 feet. 
.tonight...northwest winds 10 to 20 knots. sprinkles through
midnight. waves subsiding to calm to 2 feet. 
.wednesday...west winds 10 to 20 knots diminishing to 5 to
15 knots in the afternoon, then backing southwest late. flurries
through early afternoon. sprinkles. waves building to 1 to
3 feet. 
.wednesday night...west winds 5 to 15 knots. waves subsiding to
calm to 2 feet. 
.thursday...west winds 5 to 15 knots backing southwest by mid
afternoon. waves calm to 2 feet. 
.thursday night...southwest winds 5 to 15 knots veering northwest
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...west winds 5 to 15 knots. waves calm to 2 feet. 
.saturday...west winds 5 to 15 knots veering northwest. waves
calm to 2 feet. 
.sunday...west winds 5 to 15 knots. waves calm to 2 feet. 

$$

fzus63 kmqt 052001
glfls 
expires:202605060800;;070435

open lake forecast for lake superior
national weather service marquette mi
401 pm edt tue may 5 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...

a 29.3 inch low over james bay lifts into northern quebec this 
evening and tonight as 30.2 inch ridging builds east of the canadian 
rockies. wednesday, the high pressure over the canadian prairie 
splits and moves to the canadian four corners and the southern 
plains at 30.0 inches and 30.2 inches respectively. by thursday 
afternoon, lake superior is projected to be between a 29.5 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 29.8 inch trough over lake superior thursday night into 
friday, with the lows consolidating over quebec by saturday, leaving 
remnant 29.7 inch troughing over lake superior. high pressure toi 
30.1 inches builds back over the plains by sunday.



lsz263-060800-
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 tue may 5 2026

.late this afternoon...west winds 10 to 20 knots. sprinkles.
waves 3 to 6 feet occasionally to 8 feet. 
.tonight...west winds 5 to 15 knots veering northwest after
midnight. sprinkles and flurries through midnight. waves
subsiding to calm to 2 feet. 
.wednesday...northwest winds 5 to 15 knots becoming west 10 to
20 knots in the afternoon. flurries through early afternoon.
sprinkles. a slight chance of snow showers by mid afternoon.
waves building to 2 to 4 feet, then subsiding to 1 to 3 feet. 
.wednesday night...west winds 5 to 15 knots. waves subsiding to
calm to 2 feet. 
.thursday...west winds 5 to 15 knots backing southwest 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 calm to 2 feet. 
.friday night...southwest winds 5 to 15 knots veering west after
midnight. waves calm to 2 feet. 
.saturday...west winds 5 to 15 knots veering northwest. waves
calm to 2 feet. 
.sunday...west winds 5 to 15 knots. waves calm to 2 feet. 

$$

fzus63 kmqt 052001
glfls 
expires:202605060800;;070436

open lake forecast for lake superior
national weather service marquette mi
401 pm edt tue may 5 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...

a 29.3 inch low over james bay lifts into northern quebec this 
evening and tonight as 30.2 inch ridging builds east of the canadian 
rockies. wednesday, the high pressure over the canadian prairie 
splits and moves to the canadian four corners and the southern 
plains at 30.0 inches and 30.2 inches respectively. by thursday 
afternoon, lake superior is projected to be between a 29.5 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 29.8 inch trough over lake superior thursday night into 
friday, with the lows consolidating over quebec by saturday, leaving 
remnant 29.7 inch troughing over lake superior. high pressure toi 
30.1 inches builds back over the plains by sunday.



lsz264-060800-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
401 pm edt tue may 5 2026

.late this afternoon...west winds 15 to 25 knots. sprinkles and
flurries. waves 3 to 6 feet occasionally to 8 feet. 
.tonight...west winds 10 to 20 knots becoming northwest 5 to
15 knots after midnight. sprinkles and flurries through midnight.
waves subsiding to 1 to 3 feet. 
.wednesday...northwest winds 5 to 15 knots becoming west 10 to
20 knots in the afternoon. sprinkles and flurries by mid
afternoon. waves building to 2 to 4 feet, then subsiding to 1 to
3 feet. 
.wednesday night...west winds 5 to 15 knots. waves subsiding to
calm to 2 feet. 
.thursday...west winds 5 to 15 knots backing southwest 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 calm to 2 feet. 
.friday night...south winds 5 to 15 knots veering west after
midnight. waves calm to 2 feet. 
.saturday...west winds 5 to 15 knots veering northwest. waves
calm to 2 feet. 
.sunday...west winds 5 to 15 knots. waves calm to 2 feet. 

$$

fzus63 kmqt 052001
glfls 
expires:202605060800;;070437

open lake forecast for lake superior
national weather service marquette mi
401 pm edt tue may 5 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...

a 29.3 inch low over james bay lifts into northern quebec this 
evening and tonight as 30.2 inch ridging builds east of the canadian 
rockies. wednesday, the high pressure over the canadian prairie 
splits and moves to the canadian four corners and the southern 
plains at 30.0 inches and 30.2 inches respectively. by thursday 
afternoon, lake superior is projected to be between a 29.5 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 29.8 inch trough over lake superior thursday night into 
friday, with the lows consolidating over quebec by saturday, leaving 
remnant 29.7 inch troughing over lake superior. high pressure toi 
30.1 inches builds back over the plains by sunday.



lsz265-060800-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
401 pm edt tue may 5 2026

.late this afternoon...west winds 15 to 25 knots. waves 2 to
4 feet subsiding to 1 to 3 feet. 
.tonight...west winds 10 to 20 knots. waves subsiding to calm to
2 feet. 
.wednesday...west winds 10 to 20 knots. waves calm to 2 feet. 
.wednesday night...west winds 10 to 20 knots. waves calm to
2 feet. 
.thursday...west winds 10 to 20 knots. waves calm to 2 feet. 
.thursday night...south winds 10 to 20 knots veering southwest
after midnight. waves calm to 2 feet. 
.friday...west winds 10 to 20 knots backing east 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...northwest winds 15 to 25 knots becoming west 10 to
20 knots. waves building to 1 to 3 feet, then subsiding to calm
to 2 feet. 
.sunday...northwest winds 10 to 20 knots backing west. waves calm
to 2 feet. 

$$

fzus63 kmqt 052001
glfls 
expires:202605060800;;070438

open lake forecast for lake superior
national weather service marquette mi
401 pm edt tue may 5 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...

a 29.3 inch low over james bay lifts into northern quebec this 
evening and tonight as 30.2 inch ridging builds east of the canadian 
rockies. wednesday, the high pressure over the canadian prairie 
splits and moves to the canadian four corners and the southern 
plains at 30.0 inches and 30.2 inches respectively. by thursday 
afternoon, lake superior is projected to be between a 29.5 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 29.8 inch trough over lake superior thursday night into 
friday, with the lows consolidating over quebec by saturday, leaving 
remnant 29.7 inch troughing over lake superior. high pressure toi 
30.1 inches builds back over the plains by sunday.



lsz266-060800-
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 tue may 5 2026

.late this afternoon...west winds 15 to 25 knots. waves 3 to
6 feet occasionally to 8 feet. 
.tonight...west winds 10 to 20 knots. waves subsiding to 1 to
3 feet. 
.wednesday...northwest winds 10 to 20 knots diminishing to 5 to
15 knots late. waves 1 to 3 feet. 
.wednesday night...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 increasing to 10 to
20 knots after midnight. waves calm to 2 feet. 
.friday...southwest winds 5 to 15 knots. waves calm to 2 feet. 
.friday night...south winds 5 to 15 knots becoming southwest
10 to 20 knots after midnight. waves building to 1 to 3 feet. 
.saturday...west winds 10 to 20 knots veering northwest. waves
subsiding to 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. 

$$

fzus63 kmqt 052001
glfls 
expires:202605060800;;070439

open lake forecast for lake superior
national weather service marquette mi
401 pm edt tue may 5 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...

a 29.3 inch low over james bay lifts into northern quebec this 
evening and tonight as 30.2 inch ridging builds east of the canadian 
rockies. wednesday, the high pressure over the canadian prairie 
splits and moves to the canadian four corners and the southern 
plains at 30.0 inches and 30.2 inches respectively. by thursday 
afternoon, lake superior is projected to be between a 29.5 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 29.8 inch trough over lake superior thursday night into 
friday, with the lows consolidating over quebec by saturday, leaving 
remnant 29.7 inch troughing over lake superior. high pressure toi 
30.1 inches builds back over the plains by sunday.



lsz267-060800-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
401 pm edt tue may 5 2026

.late this afternoon...northwest winds 15 to 25 knots. waves 3 to
6 feet occasionally to 8 feet. 
.tonight...west winds 10 to 20 knots. sprinkles and flurries
after midnight. waves subsiding to 1 to 3 feet. 
.wednesday...west winds 10 to 20 knots veering northwest late.
sprinkles and flurries through early afternoon. waves 1 to
3 feet. 
.wednesday night...west winds 10 to 20 knots backing southwest
after midnight. waves subsiding to calm to 2 feet. 
.thursday...west winds 10 to 20 knots diminishing to 5 to
15 knots by mid afternoon. waves calm to 2 feet. 
.thursday night...southwest winds 5 to 15 knots backing south
after midnight. waves calm to 2 feet. 
.friday...south winds 10 to 20 knots becoming west 5 to 15 knots
by mid afternoon. waves calm to 2 feet. 
.friday night...south winds 5 to 15 knots. waves calm to 2 feet. 
.saturday...west winds 10 to 20 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 10 to 20 knots diminishing to 5 to
15 knots. waves building to 1 to 3 feet, then subsiding to calm
to 2 feet. 

$$