fzus61 kbuf 290202
glflo 
expires:202604290900;;703433

open lake forecast for lake ontario
national weather service buffalo ny
1002 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>065-290900-
lake ontario open waters from hamlin beach to the saint lawrence
river-
1002 pm edt tue apr 28 2026

.overnight...south winds 15 to 20 knots becoming west 5 to
15 knots. 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 290202
glflo 
expires:202604290900;;703432

open lake forecast for lake ontario
national weather service buffalo ny
1002 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.


loz062-290900-
lake ontario open waters from the niagara river to hamlin beach-
1002 pm edt tue apr 28 2026

.overnight...southwest winds 10 knots or less becoming
northwest. waves 2 feet 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 290148
glfle 
expires:202604290815;;703047

open lake forecast for lake erie
national weather service cleveland oh
948 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>167-290815-
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-
948 pm edt tue apr 28 2026

.overnight...west winds 10 knots or less becoming north.
waves 1 to 2 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 290148
glfle 
expires:202604290815;;703048

open lake forecast for lake erie
national weather service cleveland oh
948 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.


lez061-168-169-290815-
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-
948 pm edt tue apr 28 2026

.overnight...southwest winds 10 knots or less becoming
northwest. waves 1 to 2 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.

$$

fzus61 kcle 290148
glfle 
expires:202604290815;;703046

open lake forecast for lake erie
national weather service cleveland oh
948 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>164-290815-
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-
948 pm edt tue apr 28 2026

.overnight...northwest winds 5 to 10 knots becoming north.
a slight chance of showers late. waves 1 foot 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. 

$$

fzus63 kdtx 290237
glfsc 
expires:202604291045;;704674

lake st clair forecast
national weather service detroit/pontiac mi
1037 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.


lcz460-291045-
lake st clair-
1037 pm edt tue apr 28 2026

.rest of tonight...northwest winds 5 to 10 knots. partly cloudy this
evening 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 290235
glflh 
expires:202604291045;;704610

open lake forecast for lake huron
national weather service detroit/pontiac mi
1035 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>464-291045-
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-
1035 pm edt tue apr 28 2026

.rest of tonight...northwest winds 5 to 10 knots. waves 2 feet or
less. 
.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 290235
glflh 
expires:202604291045;;704608

open lake forecast for lake huron
national weather service detroit/pontiac mi
1035 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.


lhz361-291045-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
1035 pm edt tue apr 28 2026

.rest of tonight...west winds 10 to 15 knots decreasing to 5 to
10 knots after midnight. waves 2 to 4 feet subsiding to 1 to
3 feet early in the morning. 
.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 290235
glflh 
expires:202604291045;;704609

open lake forecast for lake huron
national weather service detroit/pontiac mi
1035 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.


lhz362-363-291045-
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-
1035 pm edt tue apr 28 2026

.rest of tonight...northwest winds 5 to 10 knots. waves 2 to
4 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 kmkx 290159
glflm 
expires:202604290915;;703299

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
859 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 around 30.3 inches over the canadian prairies will 
gradually shift southeastward into the western great lakes by the 
end of the week. winds will shift to the north northeast tonight,
as a backdoor cold front moves southward across the lake. these
winds should linger into wednesday morning, before weakening in
the afternoon. 

as the high pressure system approaches and moves into the region 
by the end of the week, winds will generally remain light. light 
showers will be possible at times through the rest of the week, as
weak low pressure areas move through. 


lmz080-669-671-673-675-777-779-870-872-874-876-878-290915-
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-
859 pm cdt tue apr 28 2026

sheboygan wi to pentwater mi south...

.rest of tonight...southwest winds 5 to 10 kt veering to north
10 to 15 kt. slight chance of rain showers. waves 1 to 2 ft.
.wednesday...north winds 10 to 15 kt increasing to 10 to 20 kt.
slight chance of rain showers in the morning, then slight chance
of rain showers and thunderstorms in the afternoon. 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 290159
glflm 
expires:202604290915;;703298

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
859 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 around 30.3 inches over the canadian prairies will 
gradually shift southeastward into the western great lakes by the 
end of the week. winds will shift to the north northeast tonight,
as a backdoor cold front moves southward across the lake. these
winds should linger into wednesday morning, before weakening in
the afternoon. 

as the high pressure system approaches and moves into the region 
by the end of the week, winds will generally remain light. light 
showers will be possible at times through the rest of the week, as
weak low pressure areas move through. 


lmz261-362-364-366-563-565-567-868-290915-
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-
859 pm cdt tue apr 28 2026

sheboygan wi to pentwater mi north...

.rest of tonight...northwest winds 10 to 20 kt becoming north
10 to 15 kt after midnight, then diminishing to 5 to 10 kt late.
waves 1 to 3 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 290201
glfls 
expires:202604290800;;703399

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

weak ridging of 30.0 inches this evening builds over lake superior 
to 30.1 inches by wednesday as a 30.3 inch high pressure sets up 
shop over the canadian prairies and a deepening 29.6 inch low lifts 
through west virginia and pennsylvania. high pressure ridging 
gradually strengthens to 30.2 inches over the lake into friday as 
the canadian high shifts east into northwestern 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 the parent 
low pressure deepens to 29.6 inches over northern ontario and 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-
1001 pm edt tue apr 28 2026

.rest of tonight...northwest winds 15 to 25 knots diminishing to
10 to 20 knots late. waves 5 to 8 feet occasionally to 10 feet
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 building to 3 to 5 feet occasionally to 7 feet,
then subsiding to 1 to 3 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. 

$$

fzus63 kmqt 290201
glfls 
expires:202604290800;;703400

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

weak ridging of 30.0 inches this evening builds over lake superior 
to 30.1 inches by wednesday as a 30.3 inch high pressure sets up 
shop over the canadian prairies and a deepening 29.6 inch low lifts 
through west virginia and pennsylvania. high pressure ridging 
gradually strengthens to 30.2 inches over the lake into friday as 
the canadian high shifts east into northwestern 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 the parent 
low pressure deepens to 29.6 inches over northern ontario and james 
bay.



lsz267-290800-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
1001 pm edt tue apr 28 2026

.rest of tonight...northwest winds 20 to 30 knots diminishing to
10 to 20 knots. waves 6 to 9 feet occasionally to 11 feet
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 6 feet
occasionally to 8 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 building to 3 to 5 feet occasionally to 7 feet,
then subsiding to 1 to 3 feet. 
.sunday...northwest winds 10 to 20 knots. waves 1 to 3 feet. 

$$

fzus63 kmqt 290201
glfls 
expires:202604290800;;703395

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

weak ridging of 30.0 inches this evening builds over lake superior 
to 30.1 inches by wednesday as a 30.3 inch high pressure sets up 
shop over the canadian prairies and a deepening 29.6 inch low lifts 
through west virginia and pennsylvania. high pressure ridging 
gradually strengthens to 30.2 inches over the lake into friday as 
the canadian high shifts east into northwestern 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 the parent 
low pressure deepens to 29.6 inches over northern ontario and james 
bay.



lsz162-290800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1001 pm edt tue apr 28 2026 /901 pm cdt tue apr 28 2026/

.rest of tonight...northwest winds 10 to 20 knots diminishing to
5 to 15 knots after midnight. waves 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 290201
glfls 
expires:202604290800;;703397

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

weak ridging of 30.0 inches this evening builds over lake superior 
to 30.1 inches by wednesday as a 30.3 inch high pressure sets up 
shop over the canadian prairies and a deepening 29.6 inch low lifts 
through west virginia and pennsylvania. high pressure ridging 
gradually strengthens to 30.2 inches over the lake into friday as 
the canadian high shifts east into northwestern 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 the parent 
low pressure deepens to 29.6 inches over northern ontario and james 
bay.



lsz264-290800-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
1001 pm edt tue apr 28 2026

.rest of tonight...northwest winds 5 to 15 knots. a chance of
rain showers by midnight. waves 2 to 4 feet 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 building to 1 to 3 feet, then
subsiding to 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 290201
glfls 
expires:202604290800;;703396

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

weak ridging of 30.0 inches this evening builds over lake superior 
to 30.1 inches by wednesday as a 30.3 inch high pressure sets up 
shop over the canadian prairies and a deepening 29.6 inch low lifts 
through west virginia and pennsylvania. high pressure ridging 
gradually strengthens to 30.2 inches over the lake into friday as 
the canadian high shifts east into northwestern 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 the parent 
low pressure deepens to 29.6 inches over northern ontario and 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-
1001 pm edt tue apr 28 2026

.rest of tonight...northwest winds 5 to 15 knots. a chance of
rain showers. waves 2 to 4 feet 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 290201
glfls 
expires:202604290800;;703398

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

weak ridging of 30.0 inches this evening builds over lake superior 
to 30.1 inches by wednesday as a 30.3 inch high pressure sets up 
shop over the canadian prairies and a deepening 29.6 inch low lifts 
through west virginia and pennsylvania. high pressure ridging 
gradually strengthens to 30.2 inches over the lake into friday as 
the canadian high shifts east into northwestern 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 the parent 
low pressure deepens to 29.6 inches over northern ontario and james 
bay.



lsz265-290800-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
1001 pm edt tue apr 28 2026

.rest of tonight...northwest winds 15 to 25 knots diminishing to
10 to 20 knots after midnight. waves 1 to 3 feet 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 1 to 3 feet. 
.saturday...northwest winds 10 to 20 knots. waves building to
2 to 4 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. 

$$