fzus61 kbuf 032010
glflo 
expires:202604040300;;780238

open lake forecast for lake ontario
national weather service buffalo ny
410 pm edt fri apr 3 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 track across southern quebec today, 
pushing a weak cold front across the lake this afternoon. a 29.4 
inch surface low will track through the central great lakes 
saturday, then into quebec saturday night and sunday, while dragging 
a strong cold front across the lake saturday night, with a secondary 
cold front then following sunday night and monday. a 30.5 inch high 
will then build across the great lakes tuesday and tuesday night, 
before sliding east and off the new england coast wednesday.


loz062-040300-
lake ontario open waters from the niagara river to hamlin beach-
410 pm edt fri apr 3 2026

.tonight...west winds 15 to 20 knots becoming north 5 to
15 knots. waves 3 to 5 feet subsiding to 1 to 3 feet. 
.saturday...east winds 10 to 15 knots increasing to 15 to
25 knots. a chance of rain showers from late morning on. waves
1 to 2 feet building to 3 to 6 feet. 
.saturday night...east winds 15 to 20 knots becoming southwest.
showers. waves 3 to 5 feet. 
.sunday...west winds 15 to 25 knots. rain showers likely in the
morning. waves 3 to 6 feet building to 5 to 8 feet. waves
occasionally around 10 feet. 
.sunday night...west winds 15 to 25 knots. waves 5 to 8 feet.
waves occasionally around 10 feet. 
.monday...west winds 15 to 25 knots becoming northwest. a chance
of rain and snow showers monday night. waves 3 to 6 feet
subsiding to 3 to 5 feet. 
.tuesday...northwest winds 15 to 25 knots diminishing to 5 to
15 knots. a chance of snow showers during the day. waves 3 to
6 feet subsiding to 1 to 3 feet. 
.wednesday...south winds 5 to 10 knots increasing to 30 knots.
waves 1 to 3 feet building to 4 to 7 feet. waves occasionally
around 9 feet. 

$$

fzus61 kbuf 032010
glflo 
expires:202604040300;;780239

open lake forecast for lake ontario
national weather service buffalo ny
410 pm edt fri apr 3 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 track across southern quebec today, 
pushing a weak cold front across the lake this afternoon. a 29.4 
inch surface low will track through the central great lakes 
saturday, then into quebec saturday night and sunday, while dragging 
a strong cold front across the lake saturday night, with a secondary 
cold front then following sunday night and monday. a 30.5 inch high 
will then build across the great lakes tuesday and tuesday night, 
before sliding east and off the new england coast wednesday.


loz063>065-040300-
lake ontario open waters from hamlin beach to the saint lawrence
river-
410 pm edt fri apr 3 2026

.tonight...west winds 15 to 20 knots becoming north and
diminishing to 5 to 10 knots. waves 3 to 5 feet subsiding to 1 to
3 feet. 
.saturday...northeast winds 10 to 15 knots becoming east 15 to
20 knots. a chance of rain showers early in the afternoon. rain
showers likely late. waves 1 to 3 feet building to 2 to 4 feet. 
.saturday night...east winds 15 to 25 knots becoming southwest to
30 knots. showers. waves 2 to 4 feet building to 5 to 8 feet.
waves occasionally around 10 feet. 
.sunday...west winds 15 to 25 knots increasing to 30 knots. rain
showers in the morning, then a chance of rain showers in the
afternoon. waves 3 to 6 feet building to 7 to 10 feet. waves
occasionally around 13 feet. 
.sunday night...west winds to 30 knots. waves 6 to 10 feet. waves
occasionally around 13 feet. 
.monday...west winds 15 to 25 knots. a chance of snow and rain
showers monday night. waves 5 to 8 feet subsiding to 3 to 6 feet.
waves occasionally around 10 feet. 
.tuesday...northwest winds 15 to 25 knots diminishing to 10 to
15 knots. a chance of snow showers during the day. waves 4 to
7 feet subsiding to 1 to 3 feet. waves occasionally around
9 feet. 
.wednesday...south winds 5 to 10 knots increasing to 30 knots.
waves 1 to 2 feet building to 6 to 9 feet. waves occasionally
around 11 feet. 

$$

fzus61 kcle 031935
glfle 
expires:202604040215;;778145

open lake forecast for lake erie
national weather service cleveland oh
335 pm edt fri apr 3 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 29.50 inches moving northeast through the upper great 
lakes will first lift a warm front north across the area saturday 
morning, followed by a cold front saturday evening. a trough 
averaging 30.00 inches will linger through monday. high pressure 
30.50 inches will build across the region for tuesday into
wednesday.


lez162>164-040215-
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-
335 pm edt fri apr 3 2026

.tonight...northwest winds 5 to 15 knots becoming east. a chance
of showers and thunderstorms. showers with a slight chance of
thunderstorms late. waves 1 to 3 feet. 
.saturday...east winds 10 to 15 knots becoming southwest 15 to
20 knots. a chance of showers with a slight chance of
thunderstorms in the morning, then showers with a chance of
thunderstorms in the afternoon. waves 1 to 3 feet. 
.saturday night...southwest winds 15 to 20 knots becoming west.
showers with a chance of thunderstorms in the evening, then
showers likely overnight. waves 1 to 3 feet building to 2 to
4 feet. 
.sunday...west winds 15 to 20 knots. waves 2 to 4 feet. 
.sunday night...west winds 15 to 20 knots diminishing to 10 to
15 knots. waves 2 to 4 feet subsiding to 1 to 3 feet. 
.monday...west winds 10 to 15 knots becoming northwest and
increasing to 15 to 25 knots. waves 1 to 3 feet building to 3 to
5 feet. 
.tuesday...northwest winds 15 to 20 knots becoming southeast 5 to
15 knots. waves 3 to 5 feet subsiding to 1 to 3 feet. 
.wednesday...southeast winds 15 to 25 knots becoming south. waves
1 to 3 feet building to 2 to 4 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 031935
glfle 
expires:202604040215;;778146

open lake forecast for lake erie
national weather service cleveland oh
335 pm edt fri apr 3 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 29.50 inches moving northeast through the upper great 
lakes will first lift a warm front north across the area saturday 
morning, followed by a cold front saturday evening. a trough 
averaging 30.00 inches will linger through monday. high pressure 
30.50 inches will build across the region for tuesday into
wednesday.


lez165>167-040215-
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-
335 pm edt fri apr 3 2026

.tonight...west winds 5 to 15 knots becoming east. a chance of
rain showers with a slight chance of thunderstorms after
midnight. rain showers likely with a slight chance of
thunderstorms late. waves 1 to 3 feet. 
.saturday...east winds 10 to 15 knots becoming south 15 to
20 knots. a chance of rain showers with a slight chance of
thunderstorms in the morning, then a chance of rain showers and
thunderstorms in the afternoon. waves 1 to 3 feet. 
.saturday night...southwest winds 15 to 20 knots becoming west.
showers with a chance of thunderstorms in the evening, then
showers overnight. waves 2 to 4 feet building to 3 to 5 feet. 
.sunday...west winds 15 to 20 knots. a chance of rain showers in
the morning. waves 3 to 6 feet. 
.sunday night...west winds 15 to 20 knots diminishing to 10 to
15 knots. waves 3 to 5 feet subsiding to 2 to 4 feet. 
.monday...west winds 10 to 15 knots becoming northwest and
increasing to 15 to 25 knots. a chance of rain showers during the
day. waves 1 to 3 feet building to 3 to 6 feet. 
.tuesday...northwest winds 15 to 25 knots becoming southeast and
diminishing to 5 to 15 knots. waves 3 to 6 feet subsiding to
2 feet or less. 
.wednesday...southeast winds 5 to 15 knots becoming south and
increasing to 15 to 25 knots. waves 1 to 3 feet building to 3 to
6 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 031935
glfle 
expires:202604040215;;778147

open lake forecast for lake erie
national weather service cleveland oh
335 pm edt fri apr 3 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 29.50 inches moving northeast through the upper great 
lakes will first lift a warm front north across the area saturday 
morning, followed by a cold front saturday evening. a trough 
averaging 30.00 inches will linger through monday. high pressure 
30.50 inches will build across the region for tuesday into
wednesday.


lez061-168-169-040215-
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-
335 pm edt fri apr 3 2026

.tonight...west winds 5 to 15 knots becoming northeast. a chance
of rain showers with a slight chance of thunderstorms late. waves
2 to 4 feet subsiding to 1 to 3 feet. 
.saturday...east winds 5 to 15 knots. a chance of rain showers
with a slight chance of thunderstorms in the morning, then a
slight chance of rain showers and thunderstorms early in the
afternoon. a chance of thunderstorms with a slight chance of rain
showers late. waves 2 feet or less. 
.saturday night...southwest winds 10 to 15 knots becoming west.
rain showers with a chance of thunderstorms in the evening, then
rain showers overnight. waves 1 to 3 feet building to 2 to
4 feet. 
.sunday...west winds 15 to 20 knots. rain showers likely in the
morning. waves 2 to 4 feet building to 3 to 6 feet. 
.sunday night...west winds 15 to 20 knots diminishing to 10 to
15 knots. waves 3 to 6 feet subsiding to 1 to 3 feet. 
.monday...west winds 10 to 15 knots becoming northwest 15 to
20 knots. a chance of rain showers during the day, then a chance
of snow and rain showers monday night. waves 1 to 2 feet building
to 2 to 4 feet. 
.tuesday...northwest winds 15 to 20 knots becoming southeast and
diminishing to less than 10 knots. waves 2 to 4 feet subsiding to
2 feet or less. 
.wednesday...southeast winds 5 to 10 knots becoming south and
increasing to 15 to 25 knots. waves 2 feet or less building to
3 to 5 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus63 kdtx 031958
glfsc 
expires:202604040400;;778803

lake st clair forecast
national weather service detroit/pontiac mi
358 pm edt fri apr 3 2026

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

.synopsis...a ridge of high pressure passes across the central
great lakes before the next low pressure system tracks from the
mid-mississippi valley tonight into the straits by saturday
evening. cooler westerly flow follows this system sunday, with a
series of weak clipper systems expected to track through monday
into tuesday.


lcz460-040400-
lake st clair-
358 pm edt fri apr 3 2026

.tonight...north winds 10 to 15 knots veering to the northeast after
midnight. partly cloudy...then mostly cloudy with rain likely 
early in the morning. waves 2 feet or less.
.saturday...southeast winds 10 to 15 knots becoming south 15 to 20
knots late in the afternoon. rain likely until late afternoon. a
chance of thunderstorms in the afternoon. rain late in the
afternoon. waves 1 to 3 feet.
.saturday night...west winds 15 to 20 knots. rain and a chance of
thunderstorms early in the evening...then a chance of light rain by
midnight. waves 1 to 3 feet.
.sunday...west winds 15 to 20 knots. mostly cloudy. waves 1 to 3
feet.
.sunday night...west winds 15 to 20 knots diminishing to 5 to 10
knots. mostly cloudy early in the evening becoming partly cloudy.
waves 2 feet or less.
.monday...west winds 10 to 15 knots becoming northwest 20 to 25
knots in the evening. partly sunny in the morning...then a chance of
light rain in the afternoon. partly cloudy in the evening. waves 2
feet or less.
.tuesday...east winds 20 to 25 knots. mostly clear. waves 2 feet or
less.
.wednesday...south winds 20 to 25 knots. partly cloudy. waves 1 to 3
feet.

$$

fzus63 kdtx 031957
glflh 
expires:202604040400;;778753

open lake forecast for lake huron
national weather service detroit/pontiac mi
357 pm edt fri apr 3 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 ridge of high pressure passes across the central
great lakes before the next low pressure system tracks from the
mid-mississippi valley tonight into the straits by saturday
evening. cooler westerly flow follows this system sunday, with a
series of weak clipper systems expected to track through monday
into tuesday.


lhz462>464-040400-
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-
357 pm edt fri apr 3 2026

.tonight...northwest winds 10 to 15 knots veering to the
northeast early in the morning. waves 1 to 3 feet building to
2 to 4 feet early in the morning. 
.saturday...east winds 10 to 15 knots increasing to 15 to
20 knots in the late morning and early afternoon...then veering
to the southeast late in the afternoon. rain. waves 3 to 5 feet. 
.saturday night...south winds 10 to 15 knots veering to the
southwest by midnight...then becoming west 15 to 20 knots after
midnight. rain in the evening. waves 4 to 6 feet. 
.sunday...west winds 15 to 20 knots. waves 5 to 7 feet. waves
occasionally around 10 feet. 
.sunday night...west winds 15 to 20 knots decreasing to 5 to
10 knots. waves 4 to 6 feet. 
.monday...west winds 5 to 10 knots becoming northwest 10 to
15 knots late in the afternoon...then increasing to 30 knots late
in the evening. a chance of rain and snow late in the morning. a
chance of snow late in the evening. waves 3 to 5 feet subsiding
to 1 to 3 feet late in the morning...then building to 8 to
12 feet late in the evening. waves occasionally around 15 feet. 
.tuesday...northwest winds to 30 knots becoming north 10 to
15 knots in the late morning and early afternoon...then
decreasing to 5 to 10 knots early in the evening becoming
southeast 10 to 15 knots by midnight. waves 8 to 12 feet
subsiding to 2 to 4 feet. waves occasionally around 15 feet. 
.wednesday...south winds 15 to 20 knots increasing to 30 knots
with gusts to 35 knot gales. waves 5 to 7 feet building to 6 to 9
feet by midnight. waves occasionally around 12 feet. 


$$

fzus63 kdtx 031957
glflh 
expires:202604040400;;778752

open lake forecast for lake huron
national weather service detroit/pontiac mi
357 pm edt fri apr 3 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 ridge of high pressure passes across the central
great lakes before the next low pressure system tracks from the
mid-mississippi valley tonight into the straits by saturday
evening. cooler westerly flow follows this system sunday, with a
series of weak clipper systems expected to track through monday
into tuesday.


lhz362-363-040400-
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-
357 pm edt fri apr 3 2026

.tonight...northwest winds 10 to 15 knots veering to the north by
midnight...then becoming east 15 to 20 knots early in the
morning. waves 3 to 5 feet building to 4 to 6 feet early in the
morning. waves occasionally around 8 feet. 
.saturday...east winds 15 to 20 knots. gusts to 30 knots until
late afternoon. rain. waves 8 to 12 feet. waves occasionally
around 15 feet. 
.saturday night...southeast winds 10 to 15 knots becoming
southwest 15 to 20 knots with gusts to around 30 knots in the
late evening and overnight. waves 5 to 7 feet. waves occasionally
around 10 feet. 
.sunday...west winds 20 to 25 knots with gusts to around
30 knots. waves 8 to 12 feet. waves occasionally around 15 feet. 
.sunday night...west winds 20 to 25 knots with gusts to around
30 knots decreasing to 10 to 15 knots. waves 6 to 9 feet. waves
occasionally around 11 feet. 
.monday...west winds 10 to 15 knots decreasing to 5 to 10 knots
late in the morning...then becoming northwest 15 to 20 knots late
in the afternoon increasing to 30 knots late in the evening. a
chance of snow and rain late in the morning. a chance of snow
late in the evening. waves 3 to 5 feet subsiding to 1 to 3 feet
late in the morning...then building to 3 to 5 feet late in the
afternoon building to 8 to 12 feet late in the evening. waves
occasionally around 15 feet. 
.tuesday...north winds 20 to 25 knots with gusts to around
30 knots decreasing to 10 to 15 knots in the late morning and
early afternoon...then decreasing to 5 to 10 knots early in the
evening becoming south 10 to 15 knots by midnight. waves 8 to
12 feet subsiding to 3 to 5 feet. waves occasionally around 15 
feet. 
.wednesday...south winds 20 to 25 knots increasing to 30 knots.
gusts to 35 knot gales. a chance of snow until early evening. a
chance of rain. waves 8 to 12 feet. waves occasionally around 15 
feet. 


$$

fzus63 kdtx 031957
glflh 
expires:202604040400;;778751

open lake forecast for lake huron
national weather service detroit/pontiac mi
357 pm edt fri apr 3 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 ridge of high pressure passes across the central
great lakes before the next low pressure system tracks from the
mid-mississippi valley tonight into the straits by saturday
evening. cooler westerly flow follows this system sunday, with a
series of weak clipper systems expected to track through monday
into tuesday.


lhz361-040400-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
357 pm edt fri apr 3 2026

.tonight...northwest winds 10 to 15 knots decreasing to 5 to
10 knots late in the evening...then becoming east 15 to 20 knots
after midnight increasing to 20 to 25 knots with gusts to around
30 knots early in the morning. a chance of rain after midnight.
waves 3 to 5 feet subsiding to 2 to 4 feet by midnight...then
building to 5 to 7 feet early in the morning. waves occasionally
around 10 feet. 
.saturday...east winds 20 to 25 knots increasing to 30 knots late
in the morning...then decreasing to 20 to 25 knots early in the
afternoon decreasing to 15 to 20 knots late in the afternoon.
brief gusts to 35 knot gales possible. rain. waves 8 to 12 feet. 
waves occasionally around 15 feet. 
.saturday night...southeast winds 10 to 15 knots becoming
southwest 15 to 20 knots with gusts to around 30 knots in the
late evening and overnight. waves 6 to 9 feet. waves occasionally
around 12 feet. 
.sunday...west winds 20 to 25 knots increasing to 30 knots in the
late morning and early afternoon...then decreasing to 20 to
25 knots early in the afternoon. brief gusts to 35 knot gales
possible. waves 8 to 12 feet. waves occasionally around 15 feet. 
.sunday night...west winds 20 to 25 knots with gusts to around
30 knots decreasing to 5 to 10 knots. waves 6 to 9 feet subsiding
to 3 to 5 feet after midnight. waves occasionally around 12 feet.
.monday...west winds 5 to 10 knots increasing to 10 to 15 knots
late in the morning...then becoming northwest 20 to 25 knots with
gusts to around 30 knots late in the afternoon. a chance of snow.
waves 1 to 3 feet building to 6 to 9 feet. waves occasionally
around 12 feet. 
.tuesday...north winds 15 to 20 knots becoming northwest 10 to
15 knots in the late morning and early afternoon...then backing
to the southwest. waves 4 to 6 feet subsiding to 1 to 3 feet. 
waves occasionally around 8 feet. 
.wednesday...south winds 15 to 20 knots increasing to 20 to
25 knots in the late morning and early afternoon...then
decreasing to 15 to 20 knots early in the evening increasing to
30 knots with gusts to 35 knot gales by midnight. a chance of
snow. a chance of rain in the late morning and early afternoon...
then rain likely. waves 6 to 9 feet. waves occasionally around 12
feet. 


$$

fzus63 kmkx 031943
glflm 
expires:202604040315;;778448

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
243 pm cdt fri apr 3 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...

northeast winds accelerate later today into tonight as low
pressure around 29.7 inches tracks northeastward across iowa.
showers and thunderstorms overspread the lake into tonight as
the low approaches and occludes, with winds turning due east. a
few gusts to gale force will be possible tonight, especially
towards the northern tip of the lake. the low crosses central 
portions of lake michigan through the daytime hours saturday with
winds veering southwest behind it.

west to northwest winds persist through the rest of the weekend. 
these winds will be breezy with speeds up to 30 kt and a few gusts
to gale force possible at times saturday night into sunday 
morning, followed by slower winds sunday afternoon and night. a 
weak low pressure trough around 30.0 inches crossing lake superior
and northern lake michigan will drag a cold front down the lake 
monday afternoon. a brief period of brisk northerly winds is 
expected behind it, diminishing after dawn tuesday morning. high 
pressure of 30.6 inches crosses the lake through the daytime hours
of tuesday with light and variable winds in the afternoon. gusty 
south winds expected tuesday night as the high pushes east of the
region. southerly gales will be possible mid week. 


lmz261-362-364-366-563-565-567-868-040315-
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-
243 pm cdt fri apr 3 2026

sheboygan wi to pentwater mi north...

.tonight...north winds 10 to 20 kt becoming northeast 15 to 25 kt
late this evening, then becoming east to 30 kt overnight. chance
of rain showers and slight chance of light freezing rain this
evening, then rain showers likely, chance of thunderstorms and
freezing rain likely overnight. waves 2 to 4 ft building to 4 to
7 ft occasionally to 9 ft. 
.saturday...east winds to 30 kt with a few gusts to gale force
possible early in the morning over the northern tip of the lake.
winds veer southwest through the afternoon. rain showers and 
freezing rain in the morning, then slight chance of rain showers 
in the afternoon. waves 5 to 8 ft occasionally to 10 ft subsiding 
to 4 to 6 ft occasionally to 8 ft.
.saturday night...southwest winds to 30 kt becoming west. waves
4 to 7 ft occasionally to 9 ft building to 6 to 9 ft occasionally
to 12 ft. 
.sunday...northwest winds to 30 kt. waves 7 to 10 ft occasionally
to 13 ft subsiding to 5 to 8 ft occasionally to 10 ft. 
.sunday night...northwest winds 10 to 20 kt becoming west 10 to
15 kt. waves 2 to 4 ft. 
.monday...northwest winds 10 to 20 kt increasing to 30 kt in the
afternoon. waves 2 to 4 ft building to 4 to 7 ft occasionally to
9 ft. 
.monday night...north gales to 35 kt diminishing to 30 kt. waves
8 to 12 ft occasionally to 16 ft. 
.tuesday...northwest winds 15 to 25 kt backing to southwest 10 to
15 kt. waves 7 to 10 ft occasionally to 13 ft subsiding to 3 to
5 ft. 
.wednesday...south gales to 40 kt. chance of rain and snow
showers. waves 12 to 16 ft occasionally to 21 ft.  

$$

fzus63 kmkx 031943
glflm 
expires:202604040315;;778449

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
243 pm cdt fri apr 3 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...

northeast winds accelerate later today into tonight as low
pressure around 29.7 inches tracks northeastward across iowa.
showers and thunderstorms overspread the lake into tonight as
the low approaches and occludes, with winds turning due east. a
few gusts to gale force will be possible tonight, especially
towards the northern tip of the lake. the low crosses central 
portions of lake michigan through the daytime hours saturday with
winds veering southwest behind it.

west to northwest winds persist through the rest of the weekend. 
these winds will be breezy with speeds up to 30 kt and a few gusts
to gale force possible at times saturday night into sunday 
morning, followed by slower winds sunday afternoon and night. a 
weak low pressure trough around 30.0 inches crossing lake superior
and northern lake michigan will drag a cold front down the lake 
monday afternoon. a brief period of brisk northerly winds is 
expected behind it, diminishing after dawn tuesday morning. high 
pressure of 30.6 inches crosses the lake through the daytime hours
of tuesday with light and variable winds in the afternoon. gusty 
south winds expected tuesday night as the high pushes east of the
region. southerly gales will be possible mid week. 


lmz080-669-671-673-675-777-779-870-872-874-876-878-040315-
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-
243 pm cdt fri apr 3 2026

sheboygan wi to pentwater mi south...

.tonight...northeast winds 15 to 25 kt becoming east to 30 kt.
chance of rain showers and thunderstorms this evening, then rain
showers with a chance of thunderstorms overnight. waves 2 to 4 ft
building to 4 to 7 ft occasionally to 9 ft. 
.saturday...southeast winds to 30 kt veering to west 15 to 25 kt.
chance of rain showers and slight chance of thunderstorms in the
morning, then slight chance of rain showers in the afternoon.
waves 4 to 7 ft occasionally to 9 ft subsiding to 4 to 6 ft
occasionally to 8 ft. 
.saturday night...west winds 15 to 25 kt increasing to 30 kt.
waves 4 to 6 ft occasionally to 8 ft building to 7 to 10 ft
occasionally to 13 ft. 
.sunday...northwest winds to 30 kt. waves 8 to 11 ft occasionally
to 14 ft subsiding to 7 to 10 ft occasionally to 13 ft. 
.sunday night...west winds 10 to 15 kt. waves 3 to 5 ft. 
.monday...northwest winds 10 to 20 kt increasing to 15 to 25 kt.
waves 3 to 5 ft building to 4 to 7 ft occasionally to 9 ft. 
.monday night...north winds to 30 kt. waves 10 to 14 ft
occasionally to 18 ft. 
.tuesday...north winds 15 to 25 kt becoming northeast 5 to 10 kt.
waves 8 to 12 ft occasionally to 16 ft subsiding to 5 to 8 ft
occasionally to 10 ft. 
.wednesday...south gales to 35 kt increasing to gales to 40 kt.
chance of snow showers. waves 10 to 14 ft occasionally to 18 ft. 

$$

fzus63 kmqt 031956
glfls 
expires:202604040800;;778728

open lake forecast for lake superior
national weather service marquette mi
356 pm edt fri apr 3 2026

for waters beyond 5 nautical miles of shore on lake superior.

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

.synopsis...

30.5 inch high pressure near hudson bay is extending 30.2 inch 
ridging over the lake this afternoon. this gives way to falling 
heights tonight into saturday as low pressure moves out of the 
plains and towards southern lake michigan by saturday morning. the 
low moves into far eastern lake superior around 29.6 inches late 
saturday. by sunday, lake superior is looking to be between the low 
at 29.3 inches over northern quebec and a 30.3 inch high over the 
great plains. pressure rises on lake superior early next week as the 
high builds to 30.6 inches over the red river valley (of the north) 
on monday before moving into the western great lakes by tuesday.



lsz264-040800-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
356 pm edt fri apr 3 2026

...gale warning in effect from 2 am edt saturday through saturday
afternoon...

.late this afternoon...northeast winds 10 to 20 knots. waves 3 to
6 feet occasionally to 8 feet. 
.tonight...northeast winds 15 to 25 knots becoming east 20 to
30 knots after midnight. a chance of snow, possibly mixed with
sleet after midnight. waves building to 7 to 10 feet occasionally
to 13 feet. 
.saturday...east gales to 35 knots diminishing to 20 to 30 knots
in the afternoon. snow through early afternoon. a slight chance
of sleet. snow showers by mid afternoon. waves building to 9 to
12 feet occasionally to 15 feet, then subsiding to 7 to 10 feet
occasionally to 13 feet. 
.saturday night...northeast winds 15 to 25 knots becoming
northwest gales to 40 knots after midnight. snow showers through
midnight, then a slight chance of snow showers after midnight.
waves subsiding to 5 to 8 feet occasionally to 10 feet, then
building to 8 to 11 feet occasionally to 14 feet. 
.sunday...northwest gales to 40 knots becoming west 15 to
25 knots by mid afternoon. waves subsiding to 1 to 3 feet. 
.sunday night...west winds 5 to 15 knots becoming north 15 to
25 knots after midnight. waves subsiding to calm to 2 feet, then
building to 2 to 4 feet. 
.monday...north winds 20 to 30 knots. freezing spray. a chance of
snow showers. waves building to 4 to 8 feet occasionally to
10 feet. 
.monday night...north winds 15 to 25 knots becoming northwest
10 to 20 knots after midnight. freezing spray through midnight.
waves subsiding to 2 to 4 feet. 
.tuesday...west winds 5 to 15 knots becoming south gales to
35 knots. a chance of snow showers. waves subsiding to 1 to
3 feet, then building to 6 to 9 feet occasionally to 11 feet. 
.wednesday...south gales to 35 knots veering west. a chance of
rain and snow showers. waves building to 8 to 11 feet
occasionally to 14 feet, then subsiding to 6 to 9 feet
occasionally to 11 feet. 

$$

fzus63 kmqt 031956
glfls 
expires:202604040800;;778729

open lake forecast for lake superior
national weather service marquette mi
356 pm edt fri apr 3 2026

for waters beyond 5 nautical miles of shore on lake superior.

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

.synopsis...

30.5 inch high pressure near hudson bay is extending 30.2 inch 
ridging over the lake this afternoon. this gives way to falling 
heights tonight into saturday as low pressure moves out of the 
plains and towards southern lake michigan by saturday morning. the 
low moves into far eastern lake superior around 29.6 inches late 
saturday. by sunday, lake superior is looking to be between the low 
at 29.3 inches over northern quebec and a 30.3 inch high over the 
great plains. pressure rises on lake superior early next week as the 
high builds to 30.6 inches over the red river valley (of the north) 
on monday before moving into the western great lakes by tuesday.



lsz265-040800-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
356 pm edt fri apr 3 2026

...gale warning in effect from 2 am edt saturday through saturday
afternoon...

.late this afternoon...northeast winds 15 to 25 knots. waves 3 to
6 feet occasionally to 8 feet. 
.tonight...northeast winds 15 to 25 knots becoming east gales to
35 knots after midnight. sleet, possibly mixed with snow and rain
after midnight. waves subsiding to 3 to 5 feet occasionally to
7 feet, then building to 7 to 10 feet occasionally to 13 feet. 
.saturday...east gales to 35 knots diminishing to 15 to 25 knots.
freezing rain through early afternoon. sleet, possibly mixed with
rain and snow. waves building to 8 to 11 feet occasionally to
14 feet, then subsiding to 4 to 7 feet occasionally to 9 feet. 
.saturday night...northwest winds 20 to 30 knots increasing to
gales to 40 knots after midnight. snow showers, possibly mixed
with rain through midnight, then a slight chance of snow showers
after midnight. waves subsiding to 3 to 5 feet occasionally to
7 feet, then building to 8 to 11 feet occasionally to 14 feet. 
.sunday...northwest gales to 40 knots becoming west 20 to
30 knots by mid afternoon. waves subsiding to 2 to 4 feet. 
.sunday night...west winds 10 to 20 knots becoming northwest
15 to 25 knots after midnight. waves subsiding to calm to 2 feet,
then building to 1 to 3 feet. 
.monday...north gales to 40 knots. snow showers likely through
early afternoon, then a chance of snow showers by mid afternoon.
freezing spray by mid afternoon. waves building to 8 to 11 feet
occasionally to 14 feet. 
.monday night...north winds 20 to 30 knots becoming northwest
15 to 25 knots after midnight. freezing spray. waves subsiding to
3 to 5 feet occasionally to 7 feet. 
.tuesday...west winds 10 to 20 knots becoming south gales to
35 knots. a chance of snow showers, possibly mixed with rain.
waves subsiding to calm to 2 feet, then building to 6 to 9 feet
occasionally to 11 feet. 
.wednesday...south gales to 40 knots becoming west gales to
35 knots. a chance of rain showers, possibly mixed with snow.
waves building to 7 to 10 feet occasionally to 13 feet, then
subsiding to 5 to 8 feet occasionally to 10 feet. 

$$

fzus63 kmqt 031956
glfls 
expires:202604040800;;778726

open lake forecast for lake superior
national weather service marquette mi
356 pm edt fri apr 3 2026

for waters beyond 5 nautical miles of shore on lake superior.

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

.synopsis...

30.5 inch high pressure near hudson bay is extending 30.2 inch 
ridging over the lake this afternoon. this gives way to falling 
heights tonight into saturday as low pressure moves out of the 
plains and towards southern lake michigan by saturday morning. the 
low moves into far eastern lake superior around 29.6 inches late 
saturday. by sunday, lake superior is looking to be between the low 
at 29.3 inches over northern quebec and a 30.3 inch high over the 
great plains. pressure rises on lake superior early next week as the 
high builds to 30.6 inches over the red river valley (of the north) 
on monday before moving into the western great lakes by tuesday.



lsz162-040800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
356 pm edt fri apr 3 2026 /256 pm cdt fri apr 3 2026/

...gale warning in effect from 2 am edt /1 am cdt/ saturday
through saturday afternoon...

.late this afternoon...east winds 15 to 25 knots. a slight chance
of snow. waves 2 to 4 feet building to 3 to 5 feet occasionally
to 7 feet. 
.tonight...east winds 20 to 30 knots increasing to gales to
35 knots late. a slight chance of snow through midnight. a slight
chance of sleet. snow after midnight. waves building to 10 to
14 feet occasionally to 18 feet. 
.saturday...east gales to 35 knots becoming northeast 20 to
30 knots in the afternoon. snow, possibly mixed with sleet
through early afternoon, then snow showers by mid afternoon.
waves subsiding to 6 to 9 feet occasionally to 11 feet. 
.saturday night...north winds 15 to 25 knots becoming northwest
20 to 30 knots after midnight, then diminishing to 15 to 25 knots
late. a chance of snow showers through midnight. waves subsiding
to 3 to 5 feet occasionally to 7 feet. 
.sunday...west winds 15 to 25 knots diminishing to 10 to 20 knots
by mid afternoon. a slight chance of rain and snow showers by mid
afternoon. waves subsiding to calm to 2 feet. 
.sunday night...west winds 10 to 20 knots becoming northwest
15 to 25 knots after midnight. a chance of snow showers after
midnight. waves building to 1 to 3 feet. 
.monday...northwest winds 20 to 30 knots becoming north 15 to
25 knots by mid afternoon. a chance of snow showers. waves
building to 2 to 4 feet. 
.monday night...northwest winds 10 to 20 knots diminishing to
5 to 15 knots after midnight. waves subsiding to calm to 2 feet. 
.tuesday...southwest winds 5 to 15 knots becoming south 20 to
30 knots. a chance of snow showers, possibly mixed with rain.
waves building to 4 to 7 feet occasionally to 9 feet. 
.wednesday...south winds 20 to 30 knots becoming west gales to
35 knots. a chance of rain showers, possibly mixed with snow.
waves subsiding to 3 to 6 feet occasionally to 8 feet, then
building to 4 to 7 feet occasionally to 9 feet. 

$$

fzus63 kmqt 031956
glfls 
expires:202604040800;;778731

open lake forecast for lake superior
national weather service marquette mi
356 pm edt fri apr 3 2026

for waters beyond 5 nautical miles of shore on lake superior.

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

.synopsis...

30.5 inch high pressure near hudson bay is extending 30.2 inch 
ridging over the lake this afternoon. this gives way to falling 
heights tonight into saturday as low pressure moves out of the 
plains and towards southern lake michigan by saturday morning. the 
low moves into far eastern lake superior around 29.6 inches late 
saturday. by sunday, lake superior is looking to be between the low 
at 29.3 inches over northern quebec and a 30.3 inch high over the 
great plains. pressure rises on lake superior early next week as the 
high builds to 30.6 inches over the red river valley (of the north) 
on monday before moving into the western great lakes by tuesday.



lsz267-040800-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
356 pm edt fri apr 3 2026

.late this afternoon...north winds 15 to 25 knots. waves 2 to
4 feet. 
.tonight...northeast winds 15 to 25 knots becoming east 20 to
30 knots after midnight. a chance of sleet, possibly mixed with
snow after midnight. waves building to 3 to 6 feet occasionally
to 8 feet. 
.saturday...east winds to 30 knots with a few gale force gusts to
35 knots possible becoming southeast 15 to 25 knots late. sleet,
possibly mixed with freezing rain and snow through early
afternoon. rain. a slight chance of sleet by mid afternoon. waves
building to 6 to 9 feet occasionally to 11 feet, then subsiding
to 3 to 5 feet occasionally to 7 feet. 
.saturday night...southeast winds 15 to 25 knots becoming west to
30 knots with a few gale force gusts to 35 knots possible after
midnight, then becoming northwest to 30 knots with a few gale
force gusts to 40 knots possible late. a chance of rain and snow
showers. waves subsiding to 2 to 4 feet, then building to 10 to
14 feet occasionally to 18 feet. 
.sunday...northwest gales to 40 knots. waves building to 11 to
15 feet occasionally to 19 feet, then subsiding to 6 to 9 feet
occasionally to 11 feet. 
.sunday night...northwest winds 10 to 20 knots diminishing to
5 to 15 knots after midnight. waves subsiding to 1 to 3 feet. 
.monday...north winds 15 to 25 knots increasing to gales to
35 knots by mid afternoon. a chance of snow showers. waves
building to 7 to 10 feet occasionally to 13 feet. 
.monday night...north winds 20 to 30 knots diminishing to 15 to
25 knots after midnight. freezing spray. waves subsiding to 3 to
6 feet occasionally to 8 feet. 
.tuesday...west winds 10 to 20 knots becoming south gales to
35 knots. waves subsiding to 1 to 3 feet, then building to 6 to
9 feet occasionally to 11 feet. 
.wednesday...south gales to 40 knots veering southwest. snow
showers likely. rain showers likely. a chance of snow showers.
waves building to 9 to 12 feet occasionally to 15 feet, then
subsiding to 7 to 10 feet occasionally to 13 feet. 

$$

fzus63 kmqt 031956
glfls 
expires:202604040800;;778730

open lake forecast for lake superior
national weather service marquette mi
356 pm edt fri apr 3 2026

for waters beyond 5 nautical miles of shore on lake superior.

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

.synopsis...

30.5 inch high pressure near hudson bay is extending 30.2 inch 
ridging over the lake this afternoon. this gives way to falling 
heights tonight into saturday as low pressure moves out of the 
plains and towards southern lake michigan by saturday morning. the 
low moves into far eastern lake superior around 29.6 inches late 
saturday. by sunday, lake superior is looking to be between the low 
at 29.3 inches over northern quebec and a 30.3 inch high over the 
great plains. pressure rises on lake superior early next week as the 
high builds to 30.6 inches over the red river valley (of the north) 
on monday before moving into the western great lakes by tuesday.



lsz266-040800-
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-
356 pm edt fri apr 3 2026

...gale warning in effect from 2 am edt saturday through saturday
afternoon...

.late this afternoon...north winds 15 to 25 knots. waves 3 to
6 feet occasionally to 8 feet. 
.tonight...northeast winds 15 to 25 knots becoming east 20 to
30 knots after midnight. sleet likely, possibly mixed with rain
and snow after midnight. waves subsiding to 3 to 5 feet
occasionally to 7 feet, then building to 6 to 9 feet occasionally
to 11 feet. 
.saturday...east gales to 35 knots diminishing to 15 to 25 knots
late. freezing rain through early afternoon. snow and sleet,
possibly mixed with rain. waves building to 9 to 12 feet
occasionally to 15 feet, then subsiding to 5 to 8 feet
occasionally to 10 feet. 
.saturday night...west winds 20 to 30 knots becoming northwest
gales to 45 knots after midnight. snow showers likely, possibly
mixed with rain showers through midnight, then a slight chance of
snow showers after midnight. waves subsiding to 4 to 7 feet
occasionally to 9 feet, then building to 10 to 14 feet
occasionally to 18 feet. 
.sunday...northwest gales to 40 knots. waves building to 11 to
15 feet occasionally to 19 feet, then subsiding to 6 to 9 feet
occasionally to 11 feet. 
.sunday night...west winds 10 to 20 knots veering northwest after
midnight. waves subsiding to 1 to 3 feet. 
.monday...north gales to 40 knots. a chance of snow showers.
freezing spray by mid afternoon. waves building to 9 to 12 feet
occasionally to 15 feet. 
.monday night...north winds 20 to 30 knots becoming northwest
15 to 25 knots after midnight. freezing spray. waves building to
10 to 14 feet occasionally to 18 feet, then subsiding to 4 to
7 feet occasionally to 9 feet. 
.tuesday...west winds 10 to 20 knots becoming south gales to
40 knots. a chance of snow showers. waves subsiding to 1 to
3 feet, then building to 8 to 11 feet occasionally to 14 feet. 
.wednesday...south gales to 45 knots. rain showers, possibly
mixed with snow, then a chance of rain showers, possibly mixed
with snow. waves building to 10 to 14 feet occasionally to
18 feet, then subsiding to 8 to 11 feet occasionally to 14 feet. 

$$

fzus63 kmqt 031956
glfls 
expires:202604040800;;778727

open lake forecast for lake superior
national weather service marquette mi
356 pm edt fri apr 3 2026

for waters beyond 5 nautical miles of shore on lake superior.

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

.synopsis...

30.5 inch high pressure near hudson bay is extending 30.2 inch 
ridging over the lake this afternoon. this gives way to falling 
heights tonight into saturday as low pressure moves out of the 
plains and towards southern lake michigan by saturday morning. the 
low moves into far eastern lake superior around 29.6 inches late 
saturday. by sunday, lake superior is looking to be between the low 
at 29.3 inches over northern quebec and a 30.3 inch high over the 
great plains. pressure rises on lake superior early next week as the 
high builds to 30.6 inches over the red river valley (of the north) 
on monday before moving into the western great lakes by tuesday.



lsz263-040800-
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-
356 pm edt fri apr 3 2026

...gale warning in effect from 2 am edt saturday through saturday
afternoon...

.late this afternoon...northeast winds 10 to 20 knots. waves 3 to
5 feet occasionally to 7 feet. 
.tonight...east winds 20 to 30 knots increasing to gales to
35 knots late. a chance of snow. sleet, possibly mixed with rain
after midnight. waves building to 9 to 12 feet occasionally to
15 feet. 
.saturday...east gales to 35 knots diminishing to 20 to 30 knots
in the afternoon, then becoming northeast 15 to 25 knots late.
snow, possibly mixed with sleet through early afternoon. a slight
chance of rain. snow showers, possibly mixed with sleet by mid
afternoon. waves subsiding to 7 to 10 feet occasionally to
13 feet. 
.saturday night...north winds 20 to 30 knots backing northwest
after midnight. snow showers likely through midnight. waves
subsiding to 5 to 8 feet occasionally to 10 feet, then building
to 6 to 9 feet occasionally to 11 feet. 
.sunday...northwest winds 15 to 25 knots becoming west 10 to
20 knots by mid afternoon. waves subsiding to 1 to 3 feet. 
.sunday night...west winds 5 to 15 knots becoming northwest 15 to
25 knots after midnight. waves subsiding to calm to 2 feet, then
building to 2 to 4 feet. 
.monday...north winds 15 to 25 knots. a chance of snow showers.
waves building to 4 to 7 feet occasionally to 9 feet, then
subsiding to 3 to 6 feet occasionally to 8 feet. 
.monday night...north winds 10 to 20 knots becoming northwest
5 to 15 knots after midnight. waves subsiding to 1 to 3 feet. 
.tuesday...west winds 5 to 15 knots becoming south 20 to
30 knots. a chance of snow showers, possibly mixed with rain.
waves subsiding to calm to 2 feet, then building to 5 to 8 feet
occasionally to 10 feet. 
.wednesday...south winds 20 to 30 knots becoming west gales to
35 knots. a chance of rain showers, possibly mixed with snow.
waves subsiding to 3 to 6 feet occasionally to 8 feet, then
building to 9 to 12 feet occasionally to 15 feet. 

$$