fzus61 kbuf 282002
glflo 
expires:202604290300;;688709

open lake forecast for lake ontario
national weather service buffalo ny
402 pm edt tue apr 28 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 29.4 inch low over southern ontario this afternoon 
will continue to track across ontario this evening, while pushing a 
warm front across the lake. the low will then continue northeast to 
james bay tonight sending a cold front across the lake. an inverted 
trough averaging 29.7 inches is expected across the lower great 
lakes wednesday through wednesday night. the trough/low will track 
to the canadian maritimes, while also elongating south along the 
coast of new england thursday through friday. the remnants of the 
sfc low will then retrograde northwest to near james bay as a 29.5 
inch low tracks across the se u.s. and out to sea from the delmarva 
on saturday. a 29.8 inch surface high will ridge over the lake 
sunday.


loz063>065-290300-
lake ontario open waters from hamlin beach to the saint lawrence
river-
402 pm edt tue apr 28 2026

.tonight...south winds 15 to 25 knots becoming west and
diminishing to 5 to 15 knots. a chance of showers early. waves
3 to 5 feet subsiding to 2 feet or less. 
.wednesday...west winds 10 knots or less becoming north. rain in
the afternoon. waves 2 feet or less. 
.wednesday night...north winds 5 to 15 knots becoming west 15 to
20 knots. rain. waves 1 to 3 feet building to 2 to 4 feet. 
.thursday...west winds 15 to 20 knots. a chance of showers. waves
3 to 6 feet. 
.thursday night...west winds 15 to 20 knots diminishing to 10 to
15 knots. waves 3 to 6 feet subsiding to 2 to 4 feet. 
.friday...west winds 10 to 15 knots increasing to 15 to 20 knots.
waves 2 to 4 feet building to 3 to 5 feet, then subsiding to 2 to
4 feet. 
.saturday...west winds 15 to 20 knots diminishing to 10 to
15 knots. waves 2 to 4 feet subsiding to 1 to 3 feet. 
.sunday...west winds 15 to 20 knots becoming southwest 10 to
15 knots. waves 2 to 4 feet building to 3 to 5 feet, then
subsiding to 1 to 3 feet. 

$$

fzus61 kbuf 282002
glflo 
expires:202604290300;;688708

open lake forecast for lake ontario
national weather service buffalo ny
402 pm edt tue apr 28 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 29.4 inch low over southern ontario this afternoon 
will continue to track across ontario this evening, while pushing a 
warm front across the lake. the low will then continue northeast to 
james bay tonight sending a cold front across the lake. an inverted 
trough averaging 29.7 inches is expected across the lower great 
lakes wednesday through wednesday night. the trough/low will track 
to the canadian maritimes, while also elongating south along the 
coast of new england thursday through friday. the remnants of the 
sfc low will then retrograde northwest to near james bay as a 29.5 
inch low tracks across the se u.s. and out to sea from the delmarva 
on saturday. a 29.8 inch surface high will ridge over the lake 
sunday.


loz062-290300-
lake ontario open waters from the niagara river to hamlin beach-
402 pm edt tue apr 28 2026

.tonight...south winds 15 to 20 knots becoming northwest and
diminishing to less than 10 knots after midnight. a chance of
showers early. waves 1 to 3 feet subsiding to 1 foot or less. 
.wednesday...north winds 10 knots or less. rain in the afternoon.
waves 1 foot or less. 
.wednesday night...northwest winds 10 to 15 knots becoming west.
rain. waves 1 to 3 feet. 
.thursday...west winds 15 to 20 knots. waves 2 to 4 feet. 
.thursday night...west winds 10 to 15 knots. waves 2 to 3 feet. 
.friday...west winds 10 to 15 knots. waves 2 to 3 feet. 
.saturday...west winds 10 to 15 knots. waves 2 to 3 feet. 
.sunday...west winds 15 to 20 knots diminishing to 10 to
15 knots. waves 2 to 3 feet. 

$$

fzus61 kcle 281956
glfle 
expires:202604290215;;688470

open lake forecast for lake erie
national weather service cleveland oh
356 pm edt tue apr 28 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...
low pressure 29.80 inches will track south and east of lake erie 
tomorrow morning through the afternoon. troughing averaging 30.00 
inches will linger over the lake through the end of the week. high
pressure 30.10 inches will build south of the region on saturday.



lez162>164-290215-
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-
356 pm edt tue apr 28 2026

.tonight...west winds 5 to 15 knots becoming north. a slight
chance of showers late. waves 2 feet or less. 
.wednesday...northeast winds 5 to 10 knots becoming north.
showers likely early, then a chance of showers late in the
morning. a slight chance of showers in the afternoon. waves 1 to
3 feet. 
.wednesday night...north winds 5 to 10 knots. a chance of showers
in the evening. waves 1 to 3 feet. 
.thursday...northwest winds 5 to 10 knots becoming west. waves
1 to 2 feet. 
.thursday night...northwest winds around 10 knots. waves around
1 foot. 
.friday...northwest winds 10 to 15 knots. waves 1 to 2 feet. 
.saturday...northwest winds 10 to 15 knots becoming west. waves
1 to 2 feet. 
.sunday...west winds 10 to 15 knots increasing to 15 to 20 knots.
waves 1 to 3 feet. 

$$

fzus61 kcle 281956
glfle 
expires:202604290215;;688471

open lake forecast for lake erie
national weather service cleveland oh
356 pm edt tue apr 28 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...
low pressure 29.80 inches will track south and east of lake erie 
tomorrow morning through the afternoon. troughing averaging 30.00 
inches will linger over the lake through the end of the week. high
pressure 30.10 inches will build south of the region on saturday.



lez165>167-290215-
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-willowick to geneva-on-the-
lake oh beyond 5nm off shoreline to us-canadian border-
356 pm edt tue apr 28 2026

.tonight...west winds 5 to 15 knots becoming north less than
10 knots. waves 1 to 3 feet. 
.wednesday...northeast winds 5 to 10 knots becoming north. a
chance of showers early, then showers likely. a slight chance of
showers late. waves 1 to 3 feet. 
.wednesday night...north winds 10 to 15 knots becoming northwest.
waves 2 to 4 feet. 
.thursday...northwest winds around 10 knots becoming west. waves
1 to 3 feet. 
.thursday night...west winds 5 to 10 knots becoming north. waves
around 1 foot. 
.friday...northwest winds 10 to 15 knots. waves 1 to 2 feet. 
.saturday...northwest winds 10 to 15 knots becoming west. waves
1 to 2 feet. 
.sunday...west winds 10 to 15 knots. a chance of showers sunday
night. waves 1 to 3 feet. 

$$

fzus61 kcle 281956
glfle 
expires:202604290215;;688472

open lake forecast for lake erie
national weather service cleveland oh
356 pm edt tue apr 28 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...
low pressure 29.80 inches will track south and east of lake erie 
tomorrow morning through the afternoon. troughing averaging 30.00 
inches will linger over the lake through the end of the week. high
pressure 30.10 inches will build south of the region on saturday.



lez061-168-169-290215-
ripley to buffalo ny extending from 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-
356 pm edt tue apr 28 2026

.tonight...southwest winds 5 to 15 knots becoming northwest less
than 10 knots. a slight chance of showers early. waves 1 to
3 feet. 
.wednesday...northeast winds 10 knots or less becoming north. a
chance of showers late in the morning. showers with a slight
chance of thunderstorms early in the afternoon, then a chance of
showers with a slight chance of thunderstorms late. waves 1 to
3 feet. 
.wednesday night...north winds around 10 knots becoming
northwest. a chance of rain showers in the evening. waves 1 to
3 feet. 
.thursday...northwest winds 10 to 15 knots becoming west. waves
1 to 3 feet. 
.thursday night...west winds 5 to 15 knots becoming northwest.
waves 1 to 2 feet. 
.friday...northwest winds 5 to 10 knots. waves 1 to 2 feet. 
.saturday...northwest winds 10 to 15 knots becoming west. waves
1 to 2 feet. 
.sunday...west winds 10 to 15 knots. a chance of rain showers
sunday night. waves 1 to 3 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus63 kdtx 281959
glfsc 
expires:202604290400;;688519

lake st clair forecast
national weather service detroit/pontiac mi
359 pm edt tue apr 28 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...exiting surface low pressure continues across james
bay into northern quebec tonight. a weak surface low lifts
through the ohio valley on wednesday leading to periods of light
showers. high pressure then attempts to build in from central
canada/conus over the weekend.


lcz460-290400-
lake st clair-
359 pm edt tue apr 28 2026

...small craft advisory in effect until 4 pm edt this afternoon...

.tonight...west winds 10 to 15 knots becoming northwest 5 to 10
knots by midnight...then veering to the north early in the morning.
partly cloudy becoming mostly cloudy. waves 2 feet or less.
.wednesday...north winds 5 to 10 knots increasing to 10 to 15 knots
in the afternoon. mostly cloudy. a chance of light showers until
late afternoon. waves 2 feet or less.
.wednesday night...north winds 10 to 15 knots becoming northwest 5
to 10 knots after midnight. partly cloudy. waves 2 feet or less.
.thursday...northwest winds 5 to 10 knots. mostly sunny. waves 2
feet or less.
.thursday night...north winds 5 to 10 knots. partly cloudy. waves 2
feet or less.
.friday...northwest winds 10 to 15 knots. partly cloudy. waves 2
feet or less.
.saturday...northwest winds 10 to 15 knots. partly cloudy. waves 2
feet or less.
.sunday...west winds 10 to 15 knots. partly cloudy. waves 2 feet or
less.

$$

fzus63 kdtx 281958
glflh 
expires:202604290400;;688505

open lake forecast for lake huron
national weather service detroit/pontiac mi
358 pm edt tue apr 28 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...exiting surface low pressure continues across james
bay into northern quebec tonight. a weak surface low lifts
through the ohio valley on wednesday leading to periods of light
showers. high pressure then attempts to build in from central
canada/conus over the weekend.


lhz361-290400-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
358 pm edt tue apr 28 2026

.tonight...west winds 15 to 20 knots decreasing to 5 to 10 knots.
waves 4 to 6 feet subsiding to 1 to 3 feet. waves occasionally
around 8 feet. 
.wednesday...west winds 5 to 10 knots increasing to 10 to
15 knots late in the afternoon. waves 1 to 3 feet. 
.wednesday night...northwest winds 10 to 15 knots. waves 2 to
4 feet. 
.thursday...northwest winds 10 to 15 knots. waves 2 to 4 feet
subsiding to 1 to 3 feet in the late morning and afternoon. 
.thursday night...northwest winds 15 to 20 knots decreasing to
10 to 15 knots after midnight. waves 3 to 5 feet. 
.friday...northwest winds 10 to 15 knots increasing to 15 to
20 knots late in the afternoon...then decreasing to 10 to
15 knots late in the evening. waves 3 to 5 feet. 
.saturday...northwest winds 10 to 15 knots increasing to 15 to
20 knots until early evening...then decreasing to 10 to 15 knots
by midnight. waves 3 to 5 feet. 
.sunday...west winds 10 to 15 knots. waves 2 to 4 feet. 


$$

fzus63 kdtx 281958
glflh 
expires:202604290400;;688506

open lake forecast for lake huron
national weather service detroit/pontiac mi
358 pm edt tue apr 28 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...exiting surface low pressure continues across james
bay into northern quebec tonight. a weak surface low lifts
through the ohio valley on wednesday leading to periods of light
showers. high pressure then attempts to build in from central
canada/conus over the weekend.


lhz362-363-290400-
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-
358 pm edt tue apr 28 2026

.tonight...west winds 10 to 15 knots becoming northwest 5 to
10 knots in the late evening and overnight. waves 3 to 5 feet
subsiding to 1 to 3 feet early in the morning. 
.wednesday...northwest winds 5 to 10 knots increasing to 10 to
15 knots early in the afternoon...then veering to the northwest
10 to 15 knots late in the afternoon. waves 1 to 3 feet. 
.wednesday night...northwest winds 10 to 15 knots increasing to
15 to 20 knots in the late evening and overnight. waves 3 to
5 feet. 
.thursday...northwest winds 10 to 15 knots. waves 2 to 4 feet. 
.thursday night...northwest winds 10 to 15 knots. waves 3 to
5 feet. 
.friday...northwest winds 10 to 15 knots increasing to 15 to
20 knots late in the evening. waves 3 to 5 feet. 
.saturday...northwest winds 10 to 15 knots decreasing to 5 to
10 knots early in the evening...then increasing to 10 to 15 knots
by midnight. waves 3 to 5 feet. 
.sunday...west winds 10 to 15 knots. waves 2 to 4 feet. 


$$

fzus63 kdtx 281958
glflh 
expires:202604290400;;688507

open lake forecast for lake huron
national weather service detroit/pontiac mi
358 pm edt tue apr 28 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...exiting surface low pressure continues across james
bay into northern quebec tonight. a weak surface low lifts
through the ohio valley on wednesday leading to periods of light
showers. high pressure then attempts to build in from central
canada/conus over the weekend.


lhz462>464-290400-
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-
358 pm edt tue apr 28 2026

.tonight...west winds 5 to 10 knots. waves 2 to 4 feet subsiding
to 2 feet or less in the late evening and overnight. 
.wednesday...north winds 5 to 10 knots increasing to 10 to
15 knots in the afternoon. waves 1 to 3 feet building to 2 to
4 feet late in the afternoon. 
.wednesday night...north winds 10 to 15 knots. waves 2 to 4 feet.
.thursday...northwest winds 10 to 15 knots decreasing to 5 to
10 knots early in the afternoon. waves 3 to 5 feet subsiding to
2 to 4 feet early in the afternoon. 
.thursday night...north winds 5 to 10 knots backing to the
northwest by midnight...then increasing to 10 to 15 knots after
midnight. waves 1 to 3 feet building to 2 to 4 feet after
midnight. 
.friday...northwest winds 10 to 15 knots decreasing to 5 to
10 knots late in the afternoon...then increasing to 10 to
15 knots late in the evening. waves 2 to 4 feet. 
.saturday...northwest winds 10 to 15 knots decreasing to 5 to
10 knots in the late morning and early afternoon...then veering
to the northwest 5 to 10 knots early in the evening backing to
the west by midnight. waves 2 to 4 feet subsiding to 1 to 3 feet
. 
.sunday...west winds 10 to 15 knots decreasing to 5 to 10 knots .
waves 1 to 3 feet. 


$$

fzus63 kdtx 281350
glflh 
expires:202604282200;;672199

open lake forecast for lake huron
national weather service detroit/pontiac mi
950 am edt tue apr 28 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 low pressure system, 29.30 inches, exits lake
superior and moves into central ontario this morning as its
expansive low-level wind field migrates across the central great
lakes. showers and embedded thunderstorms are expected before the
cold front passes through midday.


lhz361>363-282200-
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-
lake huron from sturgeon point to alabaster mi beyond 5nm off
shore-
950 am edt tue apr 28 2026

.rest of today...southwest winds 15 to 20 knots decreasing to
10 to 15 knots late in the afternoon. waves 8 to 12 feet. waves
occasionally around 15 feet. 
.tonight...southwest winds 10 to 15 knots becoming west 5 to
10 knots in the late evening and overnight. waves 3 to 5 feet
subsiding to 1 to 3 feet early in the morning. 
.wednesday...north winds 5 to 10 knots backing to the northwest
in the late morning and early afternoon...then becoming northwest
5 to 10 knots early in the afternoon. waves 1 to 3 feet. 
.wednesday night...northwest winds 10 to 15 knots increasing to
15 to 20 knots by midnight...then decreasing to 10 to 15 knots
after midnight. waves 3 to 5 feet. 
.thursday...northwest winds 10 to 15 knots. waves 3 to 5 feet. 
.friday...northwest winds 10 to 15 knots. waves 3 to 5 feet. 
.saturday...northwest winds 10 to 15 knots. waves 3 to 5 feet. 


$$

fzus63 kmkx 281945
glflm 
expires:202604290315;;688254

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
245 pm cdt tue apr 28 2026

for waters beyond five nautical miles of shore on lake michigan.

waves are provided as a range of significant wave heights, which
is the average of the highest 1/3 of the wave, along with the
average height of the highest 10% of the waves which will
occasionally be encountered.

.synopsis...

high pressure of 30.2 inches over the canadian prairies will 
gradually shift southeastward into the western great lakes by the
end of the week. breezy westerly winds today will transition to 
light (5-15 kt) northerly winds for tonight through the remainder 
of the week as this high approaches. light showers will be 
possible at times through the rest of the week as weak low
pressure areas roll through. 



lmz080-669-671-673-675-777-779-870-872-874-876-878-290315-
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-
245 pm cdt tue apr 28 2026

sheboygan wi to pentwater mi south...

.tonight...southwest winds 10 to 15 kt veering to north. slight
chance of rain showers overnight. waves 1 to 3 ft. 
.wednesday...north winds 10 to 15 kt increasing to 10 to 20 kt.
slight chance of rain showers. waves 2 to 4 ft. 
.wednesday night...north winds 10 to 20 kt becoming northwest
5 to 10 kt from late evening on. waves 1 to 3 ft subsiding to
1 to 2 ft. 
.thursday...northwest winds 10 to 15 kt becoming north 10 to
20 kt. waves 1 to 2 ft. 
.thursday night...north winds 10 to 15 kt diminishing to 5 to
10 kt. waves 1 to 3 ft. 
.friday...north winds 10 to 20 kt. waves 2 to 4 ft. 
.friday night...north winds 10 to 15 kt diminishing to 5 to
10 kt. waves 1 to 3 ft subsiding to 1 to 2 ft. 
.saturday...north winds 10 to 15 kt becoming northwest 10 to
20 kt. waves 1 to 3 ft. 
.sunday...west winds 10 to 20 kt. waves 2 to 4 ft.  

$$

fzus63 kmkx 281945
glflm 
expires:202604290315;;688253

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
245 pm cdt tue apr 28 2026

for waters beyond five nautical miles of shore on lake michigan.

waves are provided as a range of significant wave heights, which
is the average of the highest 1/3 of the wave, along with the
average height of the highest 10% of the waves which will
occasionally be encountered.

.synopsis...

high pressure of 30.2 inches over the canadian prairies will 
gradually shift southeastward into the western great lakes by the
end of the week. breezy westerly winds today will transition to 
light (5-15 kt) northerly winds for tonight through the remainder 
of the week as this high approaches. light showers will be 
possible at times through the rest of the week as weak low
pressure areas roll through. 



lmz261-362-364-366-563-565-567-868-290315-
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-
245 pm cdt tue apr 28 2026

sheboygan wi to pentwater mi north...

.tonight...northwest winds 15 to 25 kt diminishing to 10 to 20 kt
late this evening, then becoming north 10 to 15 kt overnight.
waves 2 to 4 ft subsiding to 1 to 2 ft. 
.wednesday...north winds 5 to 10 kt increasing to 10 to 20 kt.
waves 1 to 2 ft. 
.wednesday night...north winds 10 to 15 kt becoming northwest
5 to 10 kt. waves 1 to 2 ft. 
.thursday...northwest winds 10 to 15 kt becoming north 10 to
20 kt. waves 1 to 3 ft. 
.thursday night...north winds 10 to 20 kt. waves 1 to 3 ft. 
.friday...northwest winds 10 to 20 kt becoming north. waves 1 to
3 ft. 
.friday night...northwest winds 10 to 20 kt. waves 1 to 3 ft. 
.saturday...northwest winds 10 to 20 kt becoming west. waves 1 to
3 ft. 
.sunday...west winds 10 to 20 kt. waves 1 to 3 ft.  

$$

fzus63 kmqt 282002
glfls 
expires:202604290800;;688672

open lake forecast for lake superior
national weather service marquette mi
401 pm edt tue apr 28 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 29.4 inch low over far northeastern ontario this afternoon reaches 
james bay by this evening, then continues into northern quebec on 
wednesday. weak ridging of 30.1 inches builds over the lake on 
wednesday between 30.3 inch high pressure over the canadian prairie 
and 29.7 inch troughing over the eastern seaboard. high pressure 
gradually strengthens to 30.2 inches over the lake through friday as 
the canadian high shifts east to northern ontario and hudson bay. 
weak troughing of 29.9 inches moves over the lake late on saturday 
and strengthens to 29.7 inches through sunday as low pressure 
deepens to 29.6 inches over james bay.



lsz162-290800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
401 pm edt tue apr 28 2026 /301 pm cdt tue apr 28 2026/

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

$$

fzus63 kmqt 282002
glfls 
expires:202604290800;;688673

open lake forecast for lake superior
national weather service marquette mi
401 pm edt tue apr 28 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 29.4 inch low over far northeastern ontario this afternoon reaches 
james bay by this evening, then continues into northern quebec on 
wednesday. weak ridging of 30.1 inches builds over the lake on 
wednesday between 30.3 inch high pressure over the canadian prairie 
and 29.7 inch troughing over the eastern seaboard. high pressure 
gradually strengthens to 30.2 inches over the lake through friday as 
the canadian high shifts east to northern ontario and hudson bay. 
weak troughing of 29.9 inches moves over the lake late on saturday 
and strengthens to 29.7 inches through sunday as low pressure 
deepens to 29.6 inches over james bay.



lsz263-290800-
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 apr 28 2026

.late this afternoon...west winds 15 to 25 knots. waves 4 to
7 feet occasionally to 9 feet subsiding to 3 to 6 feet
occasionally to 8 feet. 
.tonight...northwest winds 10 to 20 knots diminishing to 5 to
15 knots after midnight. waves subsiding to calm to 2 feet. 
.wednesday...northwest winds 5 to 15 knots backing west in the
afternoon. a slight chance of snow showers by mid afternoon.
waves calm to 2 feet. 
.wednesday night...northwest winds 5 to 15 knots veering north
after midnight. a slight chance of rain and snow showers through
midnight. waves calm to 2 feet. 
.thursday...north winds 5 to 15 knots backing west by mid
afternoon. waves calm to 2 feet. 
.thursday night...northwest winds 5 to 15 knots veering north
after midnight. waves calm to 2 feet. 
.friday...north winds 5 to 15 knots backing west by mid
afternoon. waves calm to 2 feet. 
.friday night...west winds 5 to 15 knots veering north after
midnight. waves calm to 2 feet. 
.saturday...southwest winds 5 to 15 knots veering west. waves
calm to 2 feet. 
.sunday...west winds 5 to 15 knots veering northwest. waves calm
to 2 feet. 

$$

fzus63 kmqt 282002
glfls 
expires:202604290800;;688674

open lake forecast for lake superior
national weather service marquette mi
401 pm edt tue apr 28 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 29.4 inch low over far northeastern ontario this afternoon reaches 
james bay by this evening, then continues into northern quebec on 
wednesday. weak ridging of 30.1 inches builds over the lake on 
wednesday between 30.3 inch high pressure over the canadian prairie 
and 29.7 inch troughing over the eastern seaboard. high pressure 
gradually strengthens to 30.2 inches over the lake through friday as 
the canadian high shifts east to northern ontario and hudson bay. 
weak troughing of 29.9 inches moves over the lake late on saturday 
and strengthens to 29.7 inches through sunday as low pressure 
deepens to 29.6 inches over james bay.



lsz264-290800-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
401 pm edt tue apr 28 2026

...gale warning in effect until 5 pm edt this afternoon...

.late this afternoon...northwest winds 20 to 30 knots. waves 4 to
8 feet occasionally to 10 feet. 
.tonight...northwest winds 10 to 20 knots diminishing to 5 to
15 knots after midnight. waves subsiding to calm to 2 feet. 
.wednesday...north winds 5 to 15 knots backing west late. waves
calm to 2 feet. 
.wednesday night...northwest winds 5 to 15 knots veering north
after midnight. a slight chance of snow showers through midnight.
waves calm to 2 feet. 
.thursday...north winds 5 to 15 knots backing northwest by mid
afternoon. waves calm to 2 feet. 
.thursday night...northwest winds 5 to 15 knots veering north
after midnight. waves calm to 2 feet. 
.friday...north winds 5 to 15 knots backing northwest by mid
afternoon. waves calm to 2 feet. 
.friday night...northwest winds 10 to 20 knots becoming north
5 to 15 knots after midnight. waves calm to 2 feet. 
.saturday...northwest winds 5 to 15 knots. waves calm to 2 feet. 
.sunday...northwest winds 10 to 20 knots diminishing to 5 to
15 knots. waves calm to 2 feet. 

$$

fzus63 kmqt 282002
glfls 
expires:202604290800;;688675

open lake forecast for lake superior
national weather service marquette mi
401 pm edt tue apr 28 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 29.4 inch low over far northeastern ontario this afternoon reaches 
james bay by this evening, then continues into northern quebec on 
wednesday. weak ridging of 30.1 inches builds over the lake on 
wednesday between 30.3 inch high pressure over the canadian prairie 
and 29.7 inch troughing over the eastern seaboard. high pressure 
gradually strengthens to 30.2 inches over the lake through friday as 
the canadian high shifts east to northern ontario and hudson bay. 
weak troughing of 29.9 inches moves over the lake late on saturday 
and strengthens to 29.7 inches through sunday as low pressure 
deepens to 29.6 inches over james bay.



lsz265-290800-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
401 pm edt tue apr 28 2026

...gale warning in effect until 5 pm edt this afternoon...

.late this afternoon...west winds to 30 knots with a few gale
force gusts to 35 knots possible. waves 4 to 7 feet occasionally
to 9 feet subsiding to 3 to 5 feet occasionally to 7 feet. 
.tonight...northwest winds 15 to 25 knots diminishing to 10 to
20 knots after midnight. waves subsiding to calm to 2 feet. 
.wednesday...northwest winds 10 to 20 knots veering north in the
afternoon. waves calm to 2 feet. 
.wednesday night...north winds 5 to 15 knots backing northwest
after midnight, then increasing to 10 to 20 knots late. waves
calm to 2 feet. 
.thursday...north winds 10 to 20 knots increasing to 15 to
25 knots by mid afternoon. waves building to 1 to 3 feet. 
.thursday night...northwest winds 10 to 20 knots veering north
after midnight. waves subsiding to calm to 2 feet, then building
to 1 to 3 feet. 
.friday...north winds 15 to 25 knots backing northwest by mid
afternoon. waves building to 2 to 4 feet, then subsiding to 1 to
3 feet. 
.friday night...northwest winds 10 to 20 knots increasing to
15 to 25 knots after midnight. waves subsiding to calm to 2 feet,
then building to 1 to 3 feet. 
.saturday...northwest winds 10 to 20 knots. waves subsiding to
calm to 2 feet. 
.sunday...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. 

$$

fzus63 kmqt 282002
glfls 
expires:202604290800;;688676

open lake forecast for lake superior
national weather service marquette mi
401 pm edt tue apr 28 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 29.4 inch low over far northeastern ontario this afternoon reaches 
james bay by this evening, then continues into northern quebec on 
wednesday. weak ridging of 30.1 inches builds over the lake on 
wednesday between 30.3 inch high pressure over the canadian prairie 
and 29.7 inch troughing over the eastern seaboard. high pressure 
gradually strengthens to 30.2 inches over the lake through friday as 
the canadian high shifts east to northern ontario and hudson bay. 
weak troughing of 29.9 inches moves over the lake late on saturday 
and strengthens to 29.7 inches through sunday as low pressure 
deepens to 29.6 inches over james bay.



lsz266-290800-
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 apr 28 2026

...gale warning in effect until 6 pm edt this evening...

.late this afternoon...west gales to 35 knots. waves 10 to
14 feet occasionally to 18 feet subsiding to 8 to 11 feet
occasionally to 14 feet. 
.tonight...northwest winds 20 to 30 knots diminishing to 10 to
20 knots. waves subsiding to 2 to 4 feet. 
.wednesday...northwest winds 10 to 20 knots. waves subsiding to
calm to 2 feet. 
.wednesday night...northwest winds 10 to 20 knots veering north
late. waves calm to 2 feet. 
.thursday...north winds 10 to 20 knots backing northwest by mid
afternoon. waves building to 2 to 4 feet. 
.thursday night...northwest winds 15 to 25 knots veering north
after midnight. waves 2 to 4 feet. 
.friday...north winds 15 to 25 knots backing northwest by mid
afternoon. waves building to 3 to 5 feet occasionally to 7 feet. 
.friday night...northwest winds 15 to 25 knots veering north
after midnight. waves subsiding to 2 to 4 feet. 
.saturday...northwest winds 15 to 25 knots diminishing to 10 to
20 knots. waves subsiding to 1 to 3 feet. 
.sunday...northwest winds 15 to 25 knots diminishing to 10 to
20 knots. waves building to 2 to 4 feet, then subsiding to 1 to
3 feet. 

$$

fzus63 kmqt 282002
glfls 
expires:202604290800;;688677

open lake forecast for lake superior
national weather service marquette mi
401 pm edt tue apr 28 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 29.4 inch low over far northeastern ontario this afternoon reaches 
james bay by this evening, then continues into northern quebec on 
wednesday. weak ridging of 30.1 inches builds over the lake on 
wednesday between 30.3 inch high pressure over the canadian prairie 
and 29.7 inch troughing over the eastern seaboard. high pressure 
gradually strengthens to 30.2 inches over the lake through friday as 
the canadian high shifts east to northern ontario and hudson bay. 
weak troughing of 29.9 inches moves over the lake late on saturday 
and strengthens to 29.7 inches through sunday as low pressure 
deepens to 29.6 inches over james bay.



lsz267-290800-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
401 pm edt tue apr 28 2026

...gale warning in effect until 6 pm edt this evening...

.late this afternoon...west gales to 40 knots. waves 10 to
14 feet occasionally to 18 feet subsiding to 9 to 12 feet
occasionally to 15 feet. 
.tonight...northwest gales to 35 knots diminishing to 10 to
20 knots. waves subsiding to 2 to 4 feet. 
.wednesday...northwest winds 10 to 20 knots. waves subsiding to
calm to 2 feet. 
.wednesday night...northwest winds 10 to 20 knots veering north
late. waves calm to 2 feet. 
.thursday...north winds 10 to 20 knots becoming northwest 15 to
25 knots by mid afternoon. waves building to 2 to 4 feet. 
.thursday night...northwest winds 15 to 25 knots becoming north
10 to 20 knots after midnight. waves 2 to 4 feet. 
.friday...north winds 15 to 25 knots becoming northwest 20 to
30 knots by mid afternoon. waves building to 3 to 5 feet
occasionally to 7 feet. 
.friday night...northwest winds 15 to 25 knots becoming north
10 to 20 knots after midnight. waves subsiding to 2 to 4 feet. 
.saturday...northwest winds 15 to 25 knots diminishing to 10 to
20 knots. waves subsiding to 1 to 3 feet. 
.sunday...northwest winds 10 to 20 knots. waves building to 2 to
4 feet, then subsiding to 1 to 3 feet. 

$$