fzus61 kbuf 151410
glflo 
expires:202604152100;;410277

open lake forecast for lake ontario
national weather service buffalo ny
1009 am edt wed apr 15 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 29.6 inch low will weaken to around 29.8 as it slides 
east across the lake early this morning. another 29.6 inch low will 
move into the central great lakes wednesday night before reaching 
southern quebec thursday night, then drift off the new england coast 
by friday night. a 30.0 inch high is then forecast to build from the 
central great lakes friday to the lower great lakes saturday 
morning, then off the east coast saturday night. a 29.3 inch surface 
low to the north of lake superior saturday will deepen to 28.9 
inches by sunday, with a trailing cold front crossing the lake 
saturday night.


loz062-152100-
lake ontario open waters from the niagara river to hamlin beach-
1009 am edt wed apr 15 2026

.rest of today...southwest winds 10 to 15 knots. patchy fog. a
chance of showers and thunderstorms late. waves 1 to 3 feet. 
.tonight...southwest winds 10 to 15 knots becoming south. patchy
fog. a chance of showers and thunderstorms in the evening.
showers likely late. waves 1 to 3 feet. 
.thursday...south winds 10 to 15 knots becoming southwest. patchy
fog. showers likely in the morning, then showers with a chance of
thunderstorms in the afternoon. waves 1 to 3 feet. 
.thursday night...southwest winds 10 to 15 knots becoming west.
patchy fog in the evening. showers in the evening, then showers
likely overnight. waves 1 to 3 feet. 
.friday...northwest winds 10 knots or less becoming southeast. a
chance of showers during the day. waves 1 foot or less. 
.saturday...southeast winds 5 to 10 knots becoming west and
increasing to 15 to 20 knots. showers likely. waves 1 foot or
less building to 3 to 6 feet. 
.sunday...west winds 20 to 25 knots becoming northwest. a chance
of rain showers. waves 5 to 8 feet. waves occasionally around
10 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kbuf 151410
glflo 
expires:202604152100;;410278

open lake forecast for lake ontario
national weather service buffalo ny
1009 am edt wed apr 15 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 29.6 inch low will weaken to around 29.8 as it slides 
east across the lake early this morning. another 29.6 inch low will 
move into the central great lakes wednesday night before reaching 
southern quebec thursday night, then drift off the new england coast 
by friday night. a 30.0 inch high is then forecast to build from the 
central great lakes friday to the lower great lakes saturday 
morning, then off the east coast saturday night. a 29.3 inch surface 
low to the north of lake superior saturday will deepen to 28.9 
inches by sunday, with a trailing cold front crossing the lake 
saturday night.


loz063>065-152100-
lake ontario open waters from hamlin beach to the saint lawrence
river-
1009 am edt wed apr 15 2026

.rest of today...south winds 5 to 10 knots becoming west. a
chance of showers late this morning. patchy fog. waves 2 feet or
less. 
.tonight...south winds 5 to 10 knots. patchy fog. a chance of
showers through the early overnight, then showers likely late.
waves 2 feet or less. 
.thursday...south winds 5 to 10 knots becoming southwest. patchy
fog. showers likely in the morning, then showers with a chance of
thunderstorms in the afternoon. waves 1 to 2 feet. 
.thursday night...southwest winds 5 to 10 knots becoming west.
patchy fog in the evening. showers with a chance of thunderstorms
in the evening, then showers likely overnight. waves 1 to 2 feet.
.friday...northwest winds 10 knots or less becoming southeast. a
chance of showers during the day. waves 1 foot or less. 
.saturday...southeast winds 5 to 15 knots becoming southwest and
increasing to 15 to 25 knots. showers likely. waves 1 foot or
less building to 4 to 7 feet. waves occasionally around 9 feet. 
.sunday...west winds to 30 knots. a chance of rain showers. waves
5 to 9 feet building to 7 to 10 feet. waves occasionally around
13 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 151330
glfle 
expires:202604152015;;408999

open lake forecast for lake erie
national weather service cleveland oh
930 am edt wed apr 15 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...
lake erie resides along the northwestern flank of a high 
pressure ridge averaging 29.80 inches before a cold front sweeps 
southeastward across the lake thursday night. behind the front, a 
separate ridge averaging 30.00 inches builds from the northern great 
lakes through friday. during friday night through saturday morning, 
the ridge should exit eastward and allow a warm front to sweep 
northward across lake erie. a cold front should then sweep eastward 
across lake erie saturday evening through saturday night.
behind the cold front, a trough averaging 29.90 inches should linger 
over lake erie through sunday before a ridge averaging 30.30 inches 
builds from the west by monday.


lez061-166>169-152015-
ripley to buffalo ny extending from 5nm 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-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-
930 am edt wed apr 15 2026

.rest of today...southwest winds 10 to 15 knots becoming west. a
chance of showers late this morning, then a chance of showers and
thunderstorms early this afternoon. showers with a chance of
thunderstorms late. waves 1 to 3 feet. 
.tonight...southwest winds 10 to 15 knots. showers likely with a
chance of thunderstorms in the evening, then showers with a
slight chance of thunderstorms after midnight. waves 1 to 3 feet.
.thursday...southwest winds 10 to 15 knots. showers likely in the
morning, then showers in the afternoon. waves 1 to 3 feet. 
.thursday night...southwest winds 5 to 10 knots becoming west.
showers with a chance of thunderstorms in the evening, then a
chance of showers overnight. waves 1 to 2 feet. 
.friday...west winds 5 to 15 knots becoming southeast. waves
2 feet or less. 
.saturday...south winds 15 to 20 knots becoming west. showers
likely during the day, then a chance of showers saturday night.
waves 2 to 4 feet building to 4 to 7 feet. waves occasionally
around 9 feet. 
.sunday...west winds 15 to 25 knots becoming northwest. a chance
of rain showers during the day. waves 5 to 8 feet subsiding to
3 to 6 feet. waves occasionally around 10 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 151330
glfle 
expires:202604152015;;408998

open lake forecast for lake erie
national weather service cleveland oh
930 am edt wed apr 15 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...
lake erie resides along the northwestern flank of a high 
pressure ridge averaging 29.80 inches before a cold front sweeps 
southeastward across the lake thursday night. behind the front, a 
separate ridge averaging 30.00 inches builds from the northern great 
lakes through friday. during friday night through saturday morning, 
the ridge should exit eastward and allow a warm front to sweep 
northward across lake erie. a cold front should then sweep eastward 
across lake erie saturday evening through saturday night.
behind the cold front, a trough averaging 29.90 inches should linger 
over lake erie through sunday before a ridge averaging 30.30 inches 
builds from the west by monday.


lez162>165-152015-
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-
930 am edt wed apr 15 2026

.rest of today...southwest winds 10 to 15 knots. a chance of
showers with a slight chance of thunderstorms late this morning,
then a chance of showers and thunderstorms early this afternoon.
showers with a chance of thunderstorms late. waves 1 to 3 feet. 
.tonight...southwest winds 10 to 15 knots. a chance of showers
and thunderstorms early, then showers with a chance of
thunderstorms. showers likely with a slight chance of
thunderstorms late. waves 1 to 2 feet. 
.thursday...south winds 10 to 15 knots becoming southwest.
showers. waves 1 to 2 feet. 
.thursday night...southwest winds 5 to 15 knots becoming west. a
chance of showers and thunderstorms in the evening, then a chance
of showers overnight. waves 1 to 2 feet. 
.friday...northwest winds 5 to 15 knots becoming southeast. a
chance of showers friday night. waves 2 feet or less. 
.saturday...south winds 15 to 25 knots becoming west. showers
with a chance of thunderstorms during the day, then a chance of
showers saturday night. waves 2 to 4 feet building to 3 to
6 feet. 
.sunday...west winds 15 to 25 knots becoming northwest. a chance
of rain showers during the day. waves 3 to 6 feet building to
4 to 7 feet, then subsiding to 3 to 6 feet. waves occasionally
around 9 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus63 kdtx 151339
glflh 
expires:202604152145;;409144

open lake forecast for lake huron
national weather service detroit/pontiac mi
939 am edt wed apr 15 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...stalled frontal boundary over the central great lakes
will lead to multiple episodes of showers and thunderstorms over
the next 2 days. a powerful cold front looks to cross the area on
saturday, with will present strong winds ahead and behind the
front.


lhz361-362-152145-
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-
939 am edt wed apr 15 2026

.rest of today...northeast winds 5 to 10 knots. waves 1 to
3 feet. 
.tonight...northeast winds 5 to 10 knots. a chance of showers
after midnight. waves 1 to 3 feet. 
.thursday...north winds 5 to 10 knots. a chance of showers. waves
1 to 3 feet. 
.thursday night...northwest winds 5 to 10 knots. waves 1 to
3 feet. 
.friday...north winds 5 to 10 knots veering to the east late in
the morning...then increasing to 10 to 15 knots late in the
afternoon becoming southeast 15 to 20 knots late in the evening.
a chance of showers late in the evening. waves 1 to 3 feet
building to 3 to 5 feet late in the afternoon. 
.saturday...southeast winds 15 to 20 knots becoming south 20 to
25 knots early in the evening...then becoming west to 30 knots by
midnight. a chance of showers...then a chance of rain and snow
showers by midnight. waves 6 to 9 feet. waves occasionally around
12 feet. 
.sunday...west winds to 30 knots veering to the northwest by
midnight. a chance of snow showers and showers early in the
morning. waves 10 to 14 feet. waves occasionally around 18 feet. 


$$

fzus63 kdtx 151339
glfsc 
expires:202604152145;;409147

lake st clair forecast
national weather service detroit/pontiac mi
939 am edt wed apr 15 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...stalled frontal boundary over the central great lakes
will lead to multiple episodes of showers and thunderstorms over
the next 2 days. a powerful cold front looks to cross the area on
saturday, with will present strong winds ahead and behind the
front.


lcz460-152145-
lake st clair-
939 am edt wed apr 15 2026

.rest of today...southwest winds 10 to 15 knots. a chance of light
showers late in the morning...then light showers and a chance of
thunderstorms in the afternoon. waves 2 feet or less.
.tonight...southwest winds 10 to 15 knots. light showers likely in
the evening. a chance of thunderstorms. rain showers after midnight.
waves 2 feet or less.
.thursday...southwest winds 10 to 15 knots. light showers until late
afternoon...then light showers and a chance of thunderstorms early
in the afternoon. waves 2 feet or less.
.thursday night...west winds 10 to 15 knots becoming northwest 5 to
10 knots in the late evening and overnight. light showers and a
chance of thunderstorms early in the evening...then a chance of
light showers by midnight. waves 2 feet or less.
.friday...north winds 5 to 10 knots veering to the south in the
afternoon and evening. partly sunny becoming mostly sunny in the
afternoon becoming partly cloudy. waves 2 feet or less.
.saturday...west winds 20 to 25 knots. light showers and a chance of
thunderstorms. waves 2 to 4 feet.
.sunday...west winds 20 to 25 knots. partly cloudy. a chance of
light rain and snow showers. waves 1 to 3 feet.

$$

fzus63 kdtx 151339
glflh 
expires:202604152145;;409145

open lake forecast for lake huron
national weather service detroit/pontiac mi
939 am edt wed apr 15 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...stalled frontal boundary over the central great lakes
will lead to multiple episodes of showers and thunderstorms over
the next 2 days. a powerful cold front looks to cross the area on
saturday, with will present strong winds ahead and behind the
front.


lhz363-462>464-152145-
lake huron from sturgeon point to alabaster mi beyond 5nm off
shore-
lake huron from port austin to harbor beach beyond 5nm off shore-
lake huron from harbor beach to port sanilac beyond 5nm off shore-
lake huron from port sanilac to port huron beyond 5nm off shore-
939 am edt wed apr 15 2026

.rest of today...southwest winds 5 to 10 knots backing to the
southeast in the afternoon. a chance of showers. waves 1 to
3 feet. 
.tonight...east winds 5 to 10 knots backing to the north after
midnight. showers likely in the evening...then a chance of
showers after midnight. waves 1 to 3 feet. 
.thursday...north winds 5 to 10 knots. showers likely. waves 1 to
3 feet. 
.thursday night...north winds 5 to 10 knots. waves 2 feet or
less. 
.friday...north winds 5 to 10 knots veering to the southeast late
in the afternoon...then increasing to 10 to 15 knots late in the
evening. a chance of showers late in the evening. waves 2 feet or
less building to 3 to 5 feet late in the evening. 
.saturday...south winds 15 to 20 knots becoming west 20 to
25 knots with gusts to around 30 knots by midnight. a chance of
showers. waves 5 to 7 feet. waves occasionally around 10 feet. 
.sunday...west winds 20 to 25 knots with gusts to around 30 knots
veering to the northwest by midnight. a chance of showers early
in the morning. waves 8 to 12 feet. waves occasionally around
15 feet. 


$$

fzus63 kmkx 151433
glflm 
expires:202604152115;;410854

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
933 am cdt wed apr 15 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...

a stationary front will remain parked over the middle third of
the lake into this afternoon, slowly sinking south to the 
southern end of the lake by thursday morning. winds will remain 
southerly south of the front and modestly breezy, while winds 
north of the front will remain light and variable to northerly 
during this time. the front will clear the lake as a cold front 
friday, before low pressure of 29.6 inches approaches from the 
west. a marine dense fog advisory continues until thursday
morning. 

additional thunderstorms are forecast over the southern third of
lake michigan today. a few storms could be severe with large hail
being the primary concern. additional storms are possible friday
into saturday, with a few stronger storms possible.


lmz080-669-671-673-675-777-779-870-872-874-876-878-152115-
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-
933 am cdt wed apr 15 2026

sheboygan wi to pentwater mi south...

...dense fog advisory in effect until 7 am cdt thursday...

.rest of today...southwest winds 10 to 20 kt becoming south.
areas of dense fog. rain showers likely with a chance of
thunderstorms late this morning, then chance of rain showers and
thunderstorms this afternoon. waves 2 to 4 ft. 
.tonight...southeast winds 10 to 15 kt. widespread dense fog.
rain showers with a chance of thunderstorms in the evening, then
rain showers likely with slight chance of thunderstorms
overnight. waves 1 to 3 ft. 
.thursday...south winds 10 to 20 kt veering to northwest 10 to
15 kt. patchy dense fog in the morning, then patchy fog in the
afternoon. rain showers likely. waves 1 to 3 ft. 
.thursday night...north winds 5 to 10 kt. waves 1 to 2 ft. 
.friday...southeast winds 5 to 10 kt increasing to 10 to 20 kt in
the afternoon. waves 1 to 2 ft building to 3 to 5 ft. 
.friday night...southeast winds 15 to 25 kt becoming south to
30 kt. rain showers with a chance of thunderstorms. waves 4 to
7 ft occasionally to 9 ft. 
.saturday...south winds to 30 kt becoming west. chance of rain
showers. waves 4 to 7 ft occasionally to 9 ft. 
.sunday...west winds to 30 kt becoming northwest. waves 8 to
11 ft occasionally to 14 ft.  

$$

fzus63 kmkx 151433
glflm 
expires:202604152115;;410853

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
933 am cdt wed apr 15 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...

a stationary front will remain parked over the middle third of
the lake into this afternoon, slowly sinking south to the 
southern end of the lake by thursday morning. winds will remain 
southerly south of the front and modestly breezy, while winds 
north of the front will remain light and variable to northerly 
during this time. the front will clear the lake as a cold front 
friday, before low pressure of 29.6 inches approaches from the 
west. a marine dense fog advisory continues until thursday
morning. 

additional thunderstorms are forecast over the southern third of
lake michigan today. a few storms could be severe with large hail
being the primary concern. additional storms are possible friday
into saturday, with a few stronger storms possible.


lmz261-362-364-366-563-565-567-868-152115-
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-
933 am cdt wed apr 15 2026

sheboygan wi to pentwater mi north...

...dense fog advisory in effect until 7 am cdt thursday...

.rest of today...north winds 5 to 10 kt increasing to 10 to
15 kt. areas of dense fog. chance of rain showers late this
morning, then slight chance of rain showers and thunderstorms
this afternoon. waves 1 to 3 ft. 
.tonight...northeast winds 5 to 10 kt increasing to 10 to 15 kt.
areas of dense fog in the evening, then widespread dense fog
overnight. chance of rain showers and slight chance of
thunderstorms. waves 1 to 2 ft. 
.thursday...northeast winds 10 to 20 kt becoming north 10 to
15 kt. widespread dense fog in the morning, then patchy fog in
the afternoon. chance of rain showers. waves 1 to 2 ft. 
.thursday night...north winds 5 to 10 kt becoming northeast.
waves 1 to 2 ft. 
.friday...southeast winds 10 to 15 kt increasing to 10 to 20 kt.
waves 1 to 2 ft building to 3 to 5 ft. 
.friday night...southeast winds 15 to 25 kt becoming south to
30 kt. rain showers. waves 4 to 7 ft occasionally to 9 ft.
.saturday...south winds to 30 kt becoming southwest. chance of
rain showers. waves 4 to 7 ft occasionally to 9 ft. 
.sunday...northwest winds to 30 kt. waves 7 to 10 ft occasionally
to 13 ft.  

$$

fzus63 kmqt 151426
glfls 
expires:202604152000;;410753

open lake forecast for lake superior
national weather service marquette mi
1026 am edt wed apr 15 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 around 29.8 to 29.9 inches settles over the lake 
today before another low from the central plains lifts through lower 
michigan or closer to the straits at around 29.7 inches. ridging 
increases to 29.8 inches over lake superior later in the day 
thursday before troughing of 29.4 to 29.6 inches moves across the 
lake friday through saturday. this deepens further to 29.0 inches 
over far northern quebec by sunday morning. 30.2 inch ridging builds 
in over lake superior for sunday night.



lsz264-152000-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
1026 am edt wed apr 15 2026

...dense fog advisory in effect until 11 am edt this morning...

.rest of today...north winds less than 10 knots. patchy fog by
late morning. waves calm to 2 feet. 
.tonight...northeast winds less than 10 knots veering south after
midnight. patchy fog. waves calm to 2 feet. 
.thursday...northeast winds less than 10 knots veering south in
the afternoon, then becoming east 5 to 15 knots late. patchy
dense fog through early afternoon. waves calm to 2 feet. 
.thursday night...southeast winds 5 to 15 knots backing east
after midnight. waves calm to 2 feet. 
.friday...southeast winds 10 to 20 knots increasing to 15 to
25 knots by mid afternoon. a slight chance of rain showers by mid
afternoon. waves building to 3 to 6 feet occasionally to 8 feet. 
.friday night...southeast winds 15 to 25 knots becoming north
20 to 30 knots after midnight. rain showers. waves building to
4 to 7 feet occasionally to 9 feet. 
.saturday...northwest gales to 40 knots. a chance of rain
showers. a chance of snow showers. waves building to 9 to 12 feet
occasionally to 15 feet. 
.sunday...northwest gales to 40 knots diminishing to 10 to
20 knots. waves subsiding to 2 to 4 feet. 

$$

fzus63 kmqt 151426
glfls 
expires:202604152000;;410754

open lake forecast for lake superior
national weather service marquette mi
1026 am edt wed apr 15 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 around 29.8 to 29.9 inches settles over the lake 
today before another low from the central plains lifts through lower 
michigan or closer to the straits at around 29.7 inches. ridging 
increases to 29.8 inches over lake superior later in the day 
thursday before troughing of 29.4 to 29.6 inches moves across the 
lake friday through saturday. this deepens further to 29.0 inches 
over far northern quebec by sunday morning. 30.2 inch ridging builds 
in over lake superior for sunday night.



lsz265-152000-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
1026 am edt wed apr 15 2026

...dense fog advisory in effect until 11 am edt this morning...

.rest of today...northwest winds 5 to 15 knots veering north
late. areas of dense fog by late morning, then patchy fog by mid
afternoon. waves calm to 2 feet. 
.tonight...northeast winds 5 to 15 knots veering southeast after
midnight, then backing north late. areas of fog. waves calm to
2 feet. 
.thursday...northeast winds 5 to 15 knots veering east in the
afternoon, then increasing to 10 to 20 knots late. patchy fog
through early afternoon. waves calm to 2 feet. 
.thursday night...southeast winds 10 to 20 knots. waves calm to
2 feet. 
.friday...southeast winds 15 to 25 knots increasing to 20 to
30 knots by mid afternoon. a slight chance of rain showers by mid
afternoon. waves building to 3 to 6 feet occasionally to 8 feet. 
.friday night...south gales to 35 knots. rain showers. waves
building to 4 to 7 feet occasionally to 9 feet, then subsiding to
3 to 6 feet occasionally to 8 feet. 
.saturday...west gales to 40 knots veering northwest. a chance of
rain showers. a chance of snow showers. waves building to 9 to
12 feet occasionally to 15 feet. 
.sunday...northwest gales to 40 knots diminishing to 15 to
25 knots. waves subsiding to 2 to 4 feet. 

$$

fzus63 kmqt 151426
glfls 
expires:202604152000;;410755

open lake forecast for lake superior
national weather service marquette mi
1026 am edt wed apr 15 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 around 29.8 to 29.9 inches settles over the lake 
today before another low from the central plains lifts through lower 
michigan or closer to the straits at around 29.7 inches. ridging 
increases to 29.8 inches over lake superior later in the day 
thursday before troughing of 29.4 to 29.6 inches moves across the 
lake friday through saturday. this deepens further to 29.0 inches 
over far northern quebec by sunday morning. 30.2 inch ridging builds 
in over lake superior for sunday night.



lsz266-152000-
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-
1026 am edt wed apr 15 2026

...dense fog advisory in effect until 11 am edt this morning...

.rest of today...northwest winds 5 to 15 knots veering north in
the afternoon. areas of dense fog by late morning, then patchy
fog by mid afternoon. waves calm to 2 feet. 
.tonight...north winds 5 to 15 knots. patchy fog. waves calm to
2 feet. 
.thursday...northeast winds 5 to 15 knots backing north in the
afternoon, then veering east late. patchy fog through early
afternoon. waves calm to 2 feet. 
.thursday night...southeast winds 5 to 15 knots increasing to
10 to 20 knots after midnight. waves calm to 2 feet. 
.friday...southeast winds 15 to 25 knots increasing to 20 to
30 knots by mid afternoon. waves building to 3 to 6 feet
occasionally to 8 feet. 
.friday night...south gales to 35 knots. rain showers. waves
building to 4 to 8 feet occasionally to 10 feet. 
.saturday...northwest gales to 40 knots. a chance of rain
showers. a chance of snow showers. waves building to 12 to
17 feet occasionally to 21 feet. 
.sunday...northwest gales to 40 knots diminishing to 15 to
25 knots. waves subsiding to 4 to 7 feet occasionally to 9 feet. 

$$

fzus63 kmqt 151426
glfls 
expires:202604152000;;410756

open lake forecast for lake superior
national weather service marquette mi
1026 am edt wed apr 15 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 around 29.8 to 29.9 inches settles over the lake 
today before another low from the central plains lifts through lower 
michigan or closer to the straits at around 29.7 inches. ridging 
increases to 29.8 inches over lake superior later in the day 
thursday before troughing of 29.4 to 29.6 inches moves across the 
lake friday through saturday. this deepens further to 29.0 inches 
over far northern quebec by sunday morning. 30.2 inch ridging builds 
in over lake superior for sunday night.



lsz267-152000-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
1026 am edt wed apr 15 2026

...dense fog advisory in effect until 11 am edt this morning...

.rest of today...northwest winds 5 to 15 knots. areas of dense
fog. waves calm to 2 feet. 
.tonight...northwest winds 5 to 15 knots backing southwest after
midnight, then veering north late. areas of dense fog. a slight
chance of rain showers. waves calm to 2 feet. 
.thursday...north winds 5 to 15 knots backing northwest in the
afternoon. areas of dense fog through early afternoon. waves calm
to 2 feet. 
.thursday night...north winds 5 to 15 knots veering southeast
after midnight. waves calm to 2 feet. 
.friday...southeast winds 10 to 20 knots increasing to 15 to
25 knots by mid afternoon. waves building to 2 to 4 feet. 
.friday night...southeast winds 20 to 30 knots. a chance of rain
showers through midnight. rain showers after midnight. waves
building to 3 to 6 feet occasionally to 8 feet. 
.saturday...west gales to 35 knots. rain showers likely. a chance
of snow showers. waves building to 12 to 17 feet occasionally to
21 feet. 
.sunday...northwest gales to 35 knots diminishing to 15 to
25 knots. a chance of snow showers. waves subsiding to 4 to
7 feet occasionally to 9 feet. 

$$

fzus63 kmqt 151426
glfls 
expires:202604152000;;410751

open lake forecast for lake superior
national weather service marquette mi
1026 am edt wed apr 15 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 around 29.8 to 29.9 inches settles over the lake 
today before another low from the central plains lifts through lower 
michigan or closer to the straits at around 29.7 inches. ridging 
increases to 29.8 inches over lake superior later in the day 
thursday before troughing of 29.4 to 29.6 inches moves across the 
lake friday through saturday. this deepens further to 29.0 inches 
over far northern quebec by sunday morning. 30.2 inch ridging builds 
in over lake superior for sunday night.



lsz162-152000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1026 am edt wed apr 15 2026 /926 am cdt wed apr 15 2026/

...dense fog advisory in effect until 11 am edt /10 am cdt/ this
morning...

.rest of today...northwest winds 5 to 15 knots veering northeast
in the afternoon. waves calm to 2 feet. 
.tonight...east winds 5 to 15 knots backing northeast late.
patchy fog through midnight, then areas of dense fog after
midnight. waves calm to 2 feet. 
.thursday...northeast winds 5 to 15 knots veering east in the
afternoon. areas of dense fog through early afternoon. waves calm
to 2 feet. 
.thursday night...northeast winds 10 to 20 knots. waves calm to
2 feet. 
.friday...northeast winds 15 to 25 knots. a chance of rain
showers. a chance of thunderstorms by mid afternoon. waves
building to 2 to 4 feet. 
.friday night...north winds 15 to 25 knots becoming northwest
20 to 30 knots after midnight. rain showers through midnight,
then a chance of rain showers, possibly mixed with snow after
midnight. waves building to 3 to 5 feet occasionally to 7 feet,
then subsiding to 2 to 4 feet. 
.saturday...west winds 20 to 30 knots veering northwest. a chance
of snow showers. waves building to 3 to 6 feet occasionally to
8 feet. 
.sunday...northwest winds 20 to 30 knots diminishing to 5 to
15 knots. waves subsiding to calm to 2 feet. 

$$

fzus63 kmqt 151426
glfls 
expires:202604152000;;410752

open lake forecast for lake superior
national weather service marquette mi
1026 am edt wed apr 15 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 around 29.8 to 29.9 inches settles over the lake 
today before another low from the central plains lifts through lower 
michigan or closer to the straits at around 29.7 inches. ridging 
increases to 29.8 inches over lake superior later in the day 
thursday before troughing of 29.4 to 29.6 inches moves across the 
lake friday through saturday. this deepens further to 29.0 inches 
over far northern quebec by sunday morning. 30.2 inch ridging builds 
in over lake superior for sunday night.



lsz263-152000-
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-
1026 am edt wed apr 15 2026

...dense fog advisory in effect until 11 am edt this morning...

.rest of today...north winds less than 10 knots veering northeast
late. patchy fog by late morning. waves calm to 2 feet. 
.tonight...east winds less than 10 knots. patchy fog through
midnight, then areas of dense fog after midnight. waves calm to
2 feet. 
.thursday...northeast winds less than 10 knots increasing to 5 to
15 knots in the afternoon, then veering east late. areas of dense
fog through early afternoon. waves calm to 2 feet. 
.thursday night...east winds 5 to 15 knots. waves calm to 2 feet.
.friday...east winds 10 to 20 knots increasing to 15 to 25 knots
by mid afternoon. a chance of rain showers and a slight chance of
thunderstorms by mid afternoon. waves building to 2 to 4 feet. 
.friday night...northeast winds 20 to 30 knots backing northwest
after midnight. rain showers through midnight, then a chance of
rain showers, possibly mixed with snow after midnight. waves
building to 4 to 7 feet occasionally to 9 feet. 
.saturday...west gales to 35 knots veering northwest. a chance of
snow showers. waves building to 8 to 11 feet occasionally to
14 feet. 
.sunday...northwest winds 20 to 30 knots diminishing to 10 to
20 knots. waves subsiding to 1 to 3 feet. 

$$