fzus61 kbuf 252002
glflo 
expires:202604260300;;514706

open lake forecast for lake ontario
national weather service buffalo ny
402 pm edt sat apr 25 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 30.3 inch high will build across the lower great lakes 
tonight through monday. a 29.4 inch low over the great plains monday 
night will advance northeast into the upper great lakes later monday 
night into tuesday morning, while pushing a warm front across the 
lake. the low will head northeast to james bay tuesday night sending 
a cold front across the lake. an inverted trough averaging 29.7 inch 
inverted trough is expected across the lower great lakes wednesday 
through wednesday night.


loz062-260300-
lake ontario open waters from the niagara river to hamlin beach-
402 pm edt sat apr 25 2026

.tonight...northeast winds to 30 knots diminishing to 10 to
15 knots. rain showers likely early. waves 6 to 10 feet subsiding
to 3 to 5 feet. waves occasionally around 13 feet. 
.sunday...northeast winds 5 to 10 knots becoming east. waves 1 to
3 feet subsiding to 1 foot or less. 
.sunday night...east winds 10 knots or less. waves 1 foot or
less. 
.monday...east winds 10 knots or less increasing to 10 to
15 knots. waves 2 feet or less. 
.monday night...east winds 15 to 20 knots becoming southeast
10 to 15 knots. waves 1 to 3 feet. 
.tuesday...southeast winds 15 to 20 knots becoming southwest and
diminishing to 5 to 10 knots. showers. waves 2 to 4 feet
subsiding to 1 to 3 feet. 
.wednesday...west winds 5 to 15 knots. a chance of showers. waves
2 feet or less building to 2 to 3 feet. 
.thursday...west winds 10 to 15 knots becoming northwest. waves
1 to 3 feet. 

$$

fzus61 kbuf 252002
glflo 
expires:202604260300;;514707

open lake forecast for lake ontario
national weather service buffalo ny
402 pm edt sat apr 25 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 30.3 inch high will build across the lower great lakes 
tonight through monday. a 29.4 inch low over the great plains monday 
night will advance northeast into the upper great lakes later monday 
night into tuesday morning, while pushing a warm front across the 
lake. the low will head northeast to james bay tuesday night sending 
a cold front across the lake. an inverted trough averaging 29.7 inch 
inverted trough is expected across the lower great lakes wednesday 
through wednesday night.


loz063>065-260300-
lake ontario open waters from hamlin beach to the saint lawrence
river-
402 pm edt sat apr 25 2026

.tonight...east winds 15 to 25 knots diminishing to 5 to
15 knots. rain showers this evening. waves 4 to 7 feet subsiding
to 1 to 3 feet. waves occasionally around 9 feet. 
.sunday...northeast winds 10 knots or less becoming northwest.
waves 2 feet or less. 
.sunday night...northwest winds less than 10 knots. waves 1 foot
or less. 
.monday...southeast winds 10 knots or less becoming northeast.
waves 1 foot or less. 
.monday night...east winds 5 to 15 knots becoming southeast 15 to
20 knots. waves 1 to 3 feet. 
.tuesday...southeast winds 15 to 20 knots becoming south.
showers. waves 2 to 4 feet building to 3 to 5 feet, then
subsiding to 2 to 4 feet. 
.wednesday...south winds 10 to 15 knots becoming west. showers
likely. waves 1 to 3 feet. 
.thursday...west winds 15 to 20 knots becoming northwest. waves
2 to 4 feet. 

$$

fzus61 kcle 251947
glfle 
expires:202604260215;;514117

open lake forecast for lake erie
national weather service cleveland oh
347 pm edt sat apr 25 2026

for waters beyond five nautical miles of shore on lake erie

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

.synopsis...
a high pressure ridge averaging 30.00 inches builds gradually 
from the james bay area through tonight. the ridge exits slowly 
eastward on sunday through monday night. during tuesday through 
tuesday night, a warm front sweeps northeastward across lake erie 
and will be followed quickly by the eastward passage of a cold 
front as a low moves from near lake superior to hudson bay and 
deepens to 29.10 inches. behind the cold front, a trough averaging
29.80 inches lingers over lake erie on wednesday before a ridge 
averaging 30.00 inches builds from the north-central united 
states wednesday night through this thursday.


lez165>167-260215-
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-
347 pm edt sat apr 25 2026

.tonight...northeast winds 10 to 15 knots. patchy fog. waves 1 to
2 feet. 
.sunday...northeast winds 10 to 15 knots. patchy fog in the
morning. waves 2 to 3 feet. 
.sunday night...northeast winds 5 to 15 knots becoming east.
waves 1 to 3 feet. 
.monday...southeast winds 5 to 15 knots becoming east. waves 1 to
2 feet. 
.monday night...east winds 10 to 15 knots becoming south and
increasing to 15 to 25 knots. showers likely with a chance of
thunderstorms overnight. waves 1 to 3 feet building to 3 to
5 feet. 
.tuesday...south winds 15 to 20 knots becoming west and
diminishing to 5 to 10 knots. showers likely during the day, then
a chance of showers tuesday night. waves 3 to 5 feet subsiding to
1 to 3 feet. 
.wednesday...north winds 5 to 15 knots becoming northwest. a
chance of showers during the day. waves 1 to 2 feet. 
.thursday...northwest winds 5 to 10 knots. waves 1 to 2 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 251947
glfle 
expires:202604260215;;514118

open lake forecast for lake erie
national weather service cleveland oh
347 pm edt sat apr 25 2026

for waters beyond five nautical miles of shore on lake erie

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

.synopsis...
a high pressure ridge averaging 30.00 inches builds gradually 
from the james bay area through tonight. the ridge exits slowly 
eastward on sunday through monday night. during tuesday through 
tuesday night, a warm front sweeps northeastward across lake erie 
and will be followed quickly by the eastward passage of a cold 
front as a low moves from near lake superior to hudson bay and 
deepens to 29.10 inches. behind the cold front, a trough averaging
29.80 inches lingers over lake erie on wednesday before a ridge 
averaging 30.00 inches builds from the north-central united 
states wednesday night through this thursday.


lez061-168-169-260215-
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-
347 pm edt sat apr 25 2026

.tonight...north winds 5 to 15 knots becoming northeast. patchy
fog. waves 1 to 3 feet. 
.sunday...northeast winds 5 to 10 knots. patchy fog in the
morning. waves 2 feet or less. 
.sunday night...northeast winds 5 to 10 knots becoming east.
waves 2 feet or less. 
.monday...east winds 5 to 10 knots. waves 1 foot or less. 
.monday night...east winds 5 to 15 knots becoming southeast and
increasing to 15 to 25 knots. a chance of showers overnight.
waves 1 to 3 feet building to 2 to 4 feet. 
.tuesday...south winds 15 to 20 knots becoming southwest 5 to
15 knots. showers with a chance of thunderstorms during the day,
then a chance of showers tuesday night. waves 2 to 4 feet
subsiding to 1 to 3 feet. 
.wednesday...northwest winds 5 to 10 knots. a chance of showers
during the day. waves 1 to 2 feet. 
.thursday...northwest winds 5 to 10 knots. waves 1 to 2 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 251947
glfle 
expires:202604260215;;514116

open lake forecast for lake erie
national weather service cleveland oh
347 pm edt sat apr 25 2026

for waters beyond five nautical miles of shore on lake erie

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

.synopsis...
a high pressure ridge averaging 30.00 inches builds gradually 
from the james bay area through tonight. the ridge exits slowly 
eastward on sunday through monday night. during tuesday through 
tuesday night, a warm front sweeps northeastward across lake erie 
and will be followed quickly by the eastward passage of a cold 
front as a low moves from near lake superior to hudson bay and 
deepens to 29.10 inches. behind the cold front, a trough averaging
29.80 inches lingers over lake erie on wednesday before a ridge 
averaging 30.00 inches builds from the north-central united 
states wednesday night through this thursday.


lez162>164-260215-
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-
347 pm edt sat apr 25 2026

.tonight...northeast winds 10 to 15 knots. waves 1 to 2 feet. 
.sunday...northeast winds 10 to 15 knots becoming east. waves
1 to 3 feet. 
.sunday night...east winds 10 to 15 knots. waves 1 to 3 feet. 
.monday...southeast winds 10 to 15 knots becoming east. waves
1 to 3 feet. 
.monday night...southeast winds 15 to 20 knots becoming south. a
chance of showers in the evening, then showers with a chance of
thunderstorms overnight. waves 1 to 3 feet building to 2 to
4 feet. 
.tuesday...south winds 15 to 20 knots becoming northwest 5 to
15 knots. a chance of showers. waves 2 to 4 feet subsiding to
1 foot or less. 
.wednesday...north winds 10 to 15 knots. a chance of showers
during the day. waves 1 to 2 feet. 
.thursday...northwest winds 10 to 15 knots. waves 1 to 2 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus63 kdtx 251940
glfsc 
expires:202604260345;;513963

lake st clair forecast
national weather service detroit/pontiac mi
340 pm edt sat apr 25 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...broad high pressure, 30.20 inches, expands over the
great lakes from the north tonight through sunday. the next low,
29.30 inches, lifts into the northern great lakes late monday-
tuesday bringing stronger southerly winds and the next storm
chances.


lcz460-260345-
lake st clair-
340 pm edt sat apr 25 2026

.tonight...northeast winds 10 to 15 knots diminishing to 5 to 10
knots after midnight. partly cloudy becoming mostly cloudy late this
evening becoming partly cloudy. waves 2 feet or less.
.sunday...northeast winds 5 to 10 knots veering to the southeast
late in the afternoon. partly sunny. waves 2 feet or less.
.sunday night...southeast winds 5 to 10 knots becoming east 10 to 15
knots in the late evening and overnight. mostly clear. waves 2 feet
or less.
.monday...southeast winds 10 to 15 knots increasing to 15 to 20
knots early in the afternoon. partly sunny. waves 1 to 3 feet.
.monday night...southeast winds 15 to 20 knots increasing to 20 to
25 knots in the late evening and overnight. partly cloudy early in
the evening. a chance of light showers. rain showers and a chance of
thunderstorms after midnight. waves 2 to 4 feet.
.tuesday...south winds 20 to 25 knots becoming southwest 15 to 20
knots in the afternoon...then becoming west 10 to 15 knots in the
evening. mostly cloudy with light showers in the morning.. then
partly cloudy in the afternoon and evening. waves 2 to 4 feet
subsiding to 2 feet or less in the evening.
.wednesday...north winds 10 to 15 knots. partly cloudy. a chance of
light showers. waves 2 feet or less.
.thursday...north winds 10 to 15 knots. partly cloudy. waves 2 feet
or less.

$$

fzus63 kdtx 251940
glflh 
expires:202604260345;;513959

open lake forecast for lake huron
national weather service detroit/pontiac mi
340 pm edt sat apr 25 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...broad high pressure, 30.20 inches, expands over the
great lakes from the north tonight through sunday. the next low,
29.30 inches, lifts into the northern great lakes late monday-
tuesday bringing stronger southerly winds and the next storm
chances.


lhz361-260345-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
340 pm edt sat apr 25 2026

.tonight...light and variable winds. waves 2 feet or less. 
.sunday...light and variable winds becoming east 5 to 10 knots in
the late morning and afternoon. patchy fog in the morning. waves
2 feet or less. 
.sunday night...east winds 5 to 10 knots increasing to 10 to
15 knots after midnight. waves 1 to 3 feet. 
.monday...east winds 10 to 15 knots increasing to 20 to 25 knots
with gusts to around 30 knots. waves 2 to 4 feet building to 6 to
9 feet in the late morning and afternoon. waves occasionally
around 12 feet. 
.monday night...east winds 20 to 25 knots becoming southeast to
30 knots in the late evening and overnight. a chance of showers
in the evening...then showers after midnight. waves 10 to 14 feet
building to 12 to 16 feet after midnight. waves occasionally
around 20 feet. 
.tuesday...southeast winds 20 to 25 knots with gusts to around
30 knots becoming south 15 to 20 knots late in the morning...then
becoming west 10 to 15 knots late in the afternoon becoming
northwest 5 to 10 knots late in the evening. a chance of showers.
waves 12 to 16 feet subsiding to 3 to 5 feet. waves occasionally
around 20 feet. 
.wednesday...northwest winds 5 to 10 knots increasing to 10 to
15 knots. waves 1 to 3 feet building to 2 to 4 feet . 
.thursday...northwest winds 10 to 15 knots increasing to 15 to
20 knots . waves 2 to 4 feet subsiding to 1 to 3 feet in the late
morning and early afternoon...then building to 3 to 5 feet . 


$$

fzus63 kdtx 251940
glflh 
expires:202604260345;;513960

open lake forecast for lake huron
national weather service detroit/pontiac mi
340 pm edt sat apr 25 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...broad high pressure, 30.20 inches, expands over the
great lakes from the north tonight through sunday. the next low,
29.30 inches, lifts into the northern great lakes late monday-
tuesday bringing stronger southerly winds and the next storm
chances.


lhz362-363-260345-
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-
340 pm edt sat apr 25 2026

.tonight...north winds 5 to 10 knots. waves 2 to 4 feet subsiding
to 1 to 3 feet in the late evening and overnight. 
.sunday...north winds 5 to 10 knots veering to the northeast in
the afternoon. patchy dense fog in the morning. waves 2 feet or
less. 
.sunday night...north winds 5 to 10 knots veering to the east in
the late evening and overnight. waves 2 feet or less. 
.monday...southeast winds 10 to 15 knots increasing to 15 to
20 knots early in the afternoon. waves 1 to 3 feet building to
3 to 5 feet in the late morning and afternoon. 
.monday night...east winds 15 to 20 knots becoming southeast to
30 knots with gusts to 35 knot gales. a chance of showers in the
evening...then showers after midnight. waves 5 to 7 feet building
to 10 to 14 feet in the late evening and overnight. waves
occasionally around 18 feet. 
.tuesday...southeast winds to 30 knots with gusts to 35 knot
gales becoming south 15 to 20 knots with gusts to around 30 knots
late in the morning...then becoming southwest 10 to 15 knots late
in the afternoon becoming west 5 to 10 knots late in the evening.
showers in the morning...then a chance of showers late in the
morning. waves 12 to 16 feet subsiding to 3 to 5 feet. waves
occasionally around 20 feet. 
.wednesday...northwest winds 5 to 10 knots increasing to 10 to
15 knots. waves 1 to 3 feet building to 3 to 5 feet . 
.thursday...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. 


$$

fzus63 kdtx 251940
glflh 
expires:202604260345;;513961

open lake forecast for lake huron
national weather service detroit/pontiac mi
340 pm edt sat apr 25 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...broad high pressure, 30.20 inches, expands over the
great lakes from the north tonight through sunday. the next low,
29.30 inches, lifts into the northern great lakes late monday-
tuesday bringing stronger southerly winds and the next storm
chances.


lhz462>464-260345-
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-
340 pm edt sat apr 25 2026

.tonight...north winds 10 to 15 knots becoming northeast 5 to
10 knots after midnight. waves 2 to 4 feet subsiding to 1 to
3 feet in the late evening and overnight. 
.sunday...northeast winds 5 to 10 knots. waves 2 feet or less. 
.sunday night...northeast winds 5 to 10 knots veering to the
southeast after midnight. waves 2 feet or less. 
.monday...southeast winds 10 to 15 knots. waves 2 to 4 feet
building to 3 to 5 feet early in the afternoon. 
.monday night...southeast winds 15 to 20 knots increasing to
30 knots. showers after midnight. waves 6 to 9 feet building to
8 to 12 feet after midnight. waves occasionally around 15 feet. 
.tuesday...southeast winds to 30 knots becoming south 15 to
20 knots late in the morning...then becoming west 10 to 15 knots
late in the afternoon decreasing to 5 to 10 knots late in the
evening. showers in the morning...then a chance of showers late
in the morning. waves 8 to 12 feet subsiding to 1 to 3 feet.
waves occasionally around 15 feet. 
.wednesday...north winds 5 to 10 knots increasing to 10 to
15 knots. waves 1 to 3 feet building to 2 to 4 feet. 
.thursday...northwest winds 10 to 15 knots becoming north 5 to
10 knots . waves 2 to 4 feet subsiding to 1 to 3 feet . 


$$

fzus63 kmkx 251942
glflm 
expires:202604260315;;514045

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
242 pm cdt sat apr 25 2026

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

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

.synopsis...

high pressure of 30.0 inches over the northern great lakes will
result in northerly winds of 10-20 knots continuing into this
evening. a few webcams are showing some fog under the low clouds 
in southern portions of the lake. patchy dense fog will be 
possible through late afternoon into early evening. short term
models are showing this fog potential decreasing over the next few
hours, so will hold off on a dense fog advisory for now. 

east to northeast winds of 10 to 15 knots are then expected to 
develop tonight into sunday as the high shifts eastward ahead of 
an approaching low pressure system. the 29.4 inch low is expected 
to lift from around the iowa/missouri border early monday to lake 
superior by early tuesday morning. winds will increase monday into
monday night out of the south to southeast ahead of this low. the
cooler lake temps should dampen the threat for gales across the 
lake. breezy west to northwest winds will then develop behind the
departing low by later tuesday. 


lmz080-669-671-673-675-777-779-870-872-874-876-878-260315-
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-
242 pm cdt sat apr 25 2026

sheboygan wi to pentwater mi south...

.tonight...north winds 10 to 20 kt veering to east 10 to 15 kt.
patchy dense fog into early evening. waves 3 to 5 ft subsiding to
1 to 3 ft. 
.sunday...east winds 10 to 15 kt becoming northeast. waves 1 to
3 ft. 
.sunday night...northeast winds 10 to 15 kt becoming east 10 to
20 kt late in the evening, then becoming southeast after midnight
increasing to 15 to 25 kt late. waves 1 to 3 ft building to 4 to
6 ft occasionally to 8 ft. 
.monday...southeast winds to 30 kt. rain showers likely in the
afternoon. waves 6 to 9 ft occasionally to 12 ft. 
.monday night...southeast winds to 30 kt becoming south. showers
with a chance of thunderstorms in the evening, then showers
overnight. waves 6 to 9 ft occasionally to 12 ft. 
.tuesday...southwest winds 15 to 25 kt becoming west. waves 5 to
8 ft occasionally to 10 ft subsiding to 4 to 6 ft occasionally to
8 ft. 
.tuesday night...northwest winds 10 to 15 kt becoming north.
waves 2 to 4 ft subsiding to 1 to 2 ft. 
.wednesday...north winds 10 to 20 kt. waves 2 to 4 ft. 
.thursday...north winds 10 to 15 kt increasing to 10 to 20 kt.
waves 1 to 2 ft.  

$$

fzus63 kmkx 251942
glflm 
expires:202604260315;;514044

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
242 pm cdt sat apr 25 2026

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

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

.synopsis...

high pressure of 30.0 inches over the northern great lakes will
result in northerly winds of 10-20 knots continuing into this
evening. a few webcams are showing some fog under the low clouds 
in southern portions of the lake. patchy dense fog will be 
possible through late afternoon into early evening. short term
models are showing this fog potential decreasing over the next few
hours, so will hold off on a dense fog advisory for now. 

east to northeast winds of 10 to 15 knots are then expected to 
develop tonight into sunday as the high shifts eastward ahead of 
an approaching low pressure system. the 29.4 inch low is expected 
to lift from around the iowa/missouri border early monday to lake 
superior by early tuesday morning. winds will increase monday into
monday night out of the south to southeast ahead of this low. the
cooler lake temps should dampen the threat for gales across the 
lake. breezy west to northwest winds will then develop behind the
departing low by later tuesday. 


lmz261-362-364-366-563-565-567-868-260315-
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-
242 pm cdt sat apr 25 2026

sheboygan wi to pentwater mi north...

.tonight...northeast winds 10 to 20 kt diminishing to 10 to 15 kt
late this evening, then becoming east 5 to 10 kt overnight. waves
1 to 3 ft subsiding to 1 to 2 ft. 
.sunday...east winds 5 to 10 kt becoming northeast 10 to 15 kt.
waves 1 to 2 ft. 
.sunday night...northeast winds 10 to 20 kt becoming southeast.
waves 2 to 4 ft building to 3 to 5 ft. 
.monday...southeast winds to 30 kt. waves 6 to 9 ft occasionally
to 12 ft. 
.monday night...southeast winds to 30 kt becoming south. rain
showers with a chance of thunderstorms in the evening, then rain
showers overnight. waves 7 to 10 ft occasionally to 13 ft. 
.tuesday...southwest winds to 30 kt becoming west. waves 6 to
9 ft occasionally to 12 ft. 
.tuesday night...northwest winds 10 to 20 kt becoming north 10 to
15 kt. waves 3 to 5 ft subsiding to 1 to 2 ft. 
.wednesday...north winds 10 to 15 kt increasing to 10 to 20 kt.
waves 1 to 2 ft. 
.thursday...northwest winds 10 to 15 kt increasing to 10 to
20 kt. waves 1 to 2 ft.  

$$

fzus63 kmqt 252001
glfls 
expires:202604260800;;514675

open lake forecast for lake superior
national weather service marquette mi
401 pm edt sat apr 25 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...

ridging slowly rises over lake superior to 30.1 inches by sunday 
morning as 30.4 inch high pressure over northern quebec builds. the 
pattern remains stable over lake superior on sunday while a 29.3 
inch colorado low develops. throughout monday, this low moves 
northeast, arriving in wisconsin monday night. the low then crosses 
lake superior tuesday morning, reaching james bay tuesday night. in 
the wake of the low, 30.2 inch high pressure builds over the 
canadian prairie, sending 30.1 inch high pressure over the lake 
wednesday. this high approaches the great lakes slowly thursday.



lsz162-260800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
401 pm edt sat apr 25 2026 /301 pm cdt sat apr 25 2026/

.late this afternoon...east winds 5 to 15 knots. waves calm to
2 feet. 
.tonight...northeast winds 5 to 15 knots. patchy fog. a chance of
rain showers. waves calm to 2 feet. 
.sunday...northeast winds 5 to 15 knots increasing to 10 to
20 knots in the afternoon. patchy fog through early afternoon. a
chance of rain showers. waves calm to 2 feet. 
.sunday night...northeast winds 10 to 20 knots. a slight chance
of rain showers after midnight. waves building to 2 to 4 feet. 
.monday...northeast winds 15 to 25 knots veering east by mid
afternoon. a chance of rain showers through early afternoon, then
rain showers and a slight chance of thunderstorms by mid
afternoon. waves building to 3 to 6 feet occasionally to 8 feet. 
.monday night...northeast 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, then subsiding to 3 to 6 feet
occasionally to 8 feet. 
.tuesday...northwest winds 20 to 30 knots backing west by mid
afternoon. a chance of rain showers through early afternoon.
waves subsiding to 2 to 4 feet. 
.tuesday night...northwest winds 10 to 20 knots diminishing to
5 to 15 knots after midnight. waves subsiding to calm to 2 feet. 
.wednesday...west winds 5 to 15 knots veering northwest. waves
calm to 2 feet. 
.thursday...northwest winds 5 to 15 knots veering north. waves
calm to 2 feet. 

$$

fzus63 kmqt 252001
glfls 
expires:202604260800;;514676

open lake forecast for lake superior
national weather service marquette mi
401 pm edt sat apr 25 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...

ridging slowly rises over lake superior to 30.1 inches by sunday 
morning as 30.4 inch high pressure over northern quebec builds. the 
pattern remains stable over lake superior on sunday while a 29.3 
inch colorado low develops. throughout monday, this low moves 
northeast, arriving in wisconsin monday night. the low then crosses 
lake superior tuesday morning, reaching james bay tuesday night. in 
the wake of the low, 30.2 inch high pressure builds over the 
canadian prairie, sending 30.1 inch high pressure over the lake 
wednesday. this high approaches the great lakes slowly thursday.



lsz263-260800-
lake superior from saxon harbor wi to upper entrance to portage
canal mi 5nm off shore to the us/canadian border including isle
royale national park-
401 pm edt sat apr 25 2026

.late this afternoon...east winds 5 to 15 knots. waves calm to
2 feet. 
.tonight...east winds 5 to 15 knots. a slight chance of rain
showers. patchy fog after midnight. waves calm to 2 feet. 
.sunday...northeast winds 5 to 15 knots. patchy fog through early
afternoon. a chance of rain showers. waves calm to 2 feet. 
.sunday night...northeast winds 5 to 15 knots veering east after
midnight. waves building to 1 to 3 feet. 
.monday...east winds 15 to 25 knots increasing to 20 to 30 knots
by mid afternoon. a chance of rain showers through early
afternoon, then rain showers likely and a slight chance of
thunderstorms by mid afternoon. waves building to 5 to 8 feet
occasionally to 10 feet. 
.monday night...east winds 20 to 30 knots becoming north 15 to
25 knots after midnight. rain showers. waves building to 7 to
10 feet occasionally to 13 feet, then subsiding to 5 to 8 feet
occasionally to 10 feet. 
.tuesday...west winds 20 to 30 knots. a chance of rain showers
through early afternoon. waves subsiding to 4 to 8 feet
occasionally to 10 feet. 
.tuesday night...northwest winds 10 to 20 knots diminishing to
5 to 15 knots after midnight. waves subsiding to 1 to 3 feet. 
.wednesday...west winds 5 to 15 knots veering northwest. waves
subsiding to calm to 2 feet. 
.thursday...north winds 5 to 15 knots. waves calm to 2 feet. 

$$

fzus63 kmqt 252001
glfls 
expires:202604260800;;514677

open lake forecast for lake superior
national weather service marquette mi
401 pm edt sat apr 25 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...

ridging slowly rises over lake superior to 30.1 inches by sunday 
morning as 30.4 inch high pressure over northern quebec builds. the 
pattern remains stable over lake superior on sunday while a 29.3 
inch colorado low develops. throughout monday, this low moves 
northeast, arriving in wisconsin monday night. the low then crosses 
lake superior tuesday morning, reaching james bay tuesday night. in 
the wake of the low, 30.2 inch high pressure builds over the 
canadian prairie, sending 30.1 inch high pressure over the lake 
wednesday. this high approaches the great lakes slowly thursday.



lsz264-260800-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
401 pm edt sat apr 25 2026

.late this afternoon...south winds less than 10 knots. waves calm
to 2 feet. 
.tonight...southeast winds 5 to 15 knots backing east late.
patchy fog after midnight. waves calm to 2 feet. 
.sunday...east winds 5 to 15 knots. a slight chance of rain
showers through early afternoon. patchy fog. waves calm to
2 feet. 
.sunday night...east winds 5 to 15 knots increasing to 10 to
20 knots late. waves building to 1 to 3 feet. 
.monday...east winds 15 to 25 knots increasing to 20 to 30 knots
by mid afternoon. a chance of rain showers by mid afternoon.
waves building to 7 to 10 feet occasionally to 13 feet. 
.monday night...southeast gales to 35 knots. rain showers. waves
building to 8 to 12 feet occasionally to 15 feet. 
.tuesday...northwest gales to 40 knots backing west by mid
afternoon. a chance of rain showers. waves subsiding to 4 to
7 feet occasionally to 9 feet. 
.tuesday night...northwest winds 15 to 25 knots diminishing to
5 to 15 knots after midnight. waves subsiding to 1 to 3 feet. 
.wednesday...west winds 5 to 15 knots veering northwest. waves
subsiding to calm to 2 feet. 
.thursday...northwest winds 5 to 15 knots veering north. waves
calm to 2 feet. 

$$

fzus63 kmqt 252001
glfls 
expires:202604260800;;514678

open lake forecast for lake superior
national weather service marquette mi
401 pm edt sat apr 25 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...

ridging slowly rises over lake superior to 30.1 inches by sunday 
morning as 30.4 inch high pressure over northern quebec builds. the 
pattern remains stable over lake superior on sunday while a 29.3 
inch colorado low develops. throughout monday, this low moves 
northeast, arriving in wisconsin monday night. the low then crosses 
lake superior tuesday morning, reaching james bay tuesday night. in 
the wake of the low, 30.2 inch high pressure builds over the 
canadian prairie, sending 30.1 inch high pressure over the lake 
wednesday. this high approaches the great lakes slowly thursday.



lsz265-260800-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
401 pm edt sat apr 25 2026

.late this afternoon...east winds 5 to 15 knots. waves calm to
2 feet. 
.tonight...southeast winds 5 to 15 knots. patchy fog after
midnight. waves calm to 2 feet. 
.sunday...southeast winds 10 to 20 knots backing east late. waves
calm to 2 feet. 
.sunday night...east winds 10 to 20 knots becoming southeast
15 to 25 knots late. waves building to 1 to 3 feet. 
.monday...southeast winds 20 to 30 knots increasing to gales to
35 knots by mid afternoon. a chance of rain showers by mid
afternoon. waves building to 6 to 9 feet occasionally to 11 feet.
.monday night...southeast gales to 35 knots. rain showers. waves
building to 8 to 11 feet occasionally to 14 feet, then subsiding
to 6 to 9 feet occasionally to 11 feet. 
.tuesday...west gales to 40 knots. a chance of rain showers.
waves subsiding to 4 to 7 feet occasionally to 9 feet. 
.tuesday night...northwest winds 20 to 30 knots diminishing to
10 to 20 knots after midnight. waves subsiding to 1 to 3 feet. 
.wednesday...northwest winds 10 to 20 knots. waves subsiding to
calm to 2 feet. 
.thursday...northwest winds 10 to 20 knots. waves building to
1 to 3 feet, then subsiding to calm to 2 feet. 

$$

fzus63 kmqt 252001
glfls 
expires:202604260800;;514679

open lake forecast for lake superior
national weather service marquette mi
401 pm edt sat apr 25 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...

ridging slowly rises over lake superior to 30.1 inches by sunday 
morning as 30.4 inch high pressure over northern quebec builds. the 
pattern remains stable over lake superior on sunday while a 29.3 
inch colorado low develops. throughout monday, this low moves 
northeast, arriving in wisconsin monday night. the low then crosses 
lake superior tuesday morning, reaching james bay tuesday night. in 
the wake of the low, 30.2 inch high pressure builds over the 
canadian prairie, sending 30.1 inch high pressure over the lake 
wednesday. this high approaches the great lakes slowly thursday.



lsz266-260800-
lake superior east of a line from manitou island to marquette mi
and west of a line from grand marais mi to the us/canadian border
beyond 5nm from shore-
401 pm edt sat apr 25 2026

.late this afternoon...north winds 5 to 15 knots. waves calm to
2 feet. 
.tonight...east winds 5 to 15 knots veering south after midnight,
then backing southeast late. patchy fog after midnight. waves
calm to 2 feet. 
.sunday...southeast winds 10 to 20 knots backing east late.
patchy fog through early afternoon. waves calm to 2 feet. 
.sunday night...east winds 10 to 20 knots veering southeast after
midnight, then increasing to 15 to 25 knots late. waves building
to 2 to 4 feet. 
.monday...southeast winds 20 to 30 knots increasing to gales to
40 knots by mid afternoon. a chance of rain showers by mid
afternoon. waves building to 8 to 11 feet occasionally to
14 feet. 
.monday night...southeast gales to 40 knots. rain showers. waves
building to 8 to 12 feet occasionally to 15 feet. 
.tuesday...west gales to 40 knots. a chance of rain showers.
waves subsiding to 7 to 10 feet occasionally to 13 feet, then
building to 8 to 11 feet occasionally to 14 feet. 
.tuesday night...northwest gales to 35 knots diminishing to 10 to
20 knots after midnight. waves subsiding to 3 to 5 feet
occasionally to 7 feet. 
.wednesday...northwest winds 10 to 20 knots. waves subsiding to
1 to 3 feet. 
.thursday...northwest winds 10 to 20 knots veering north. waves
subsiding to calm to 2 feet. 

$$

fzus63 kmqt 252001
glfls 
expires:202604260800;;514680

open lake forecast for lake superior
national weather service marquette mi
401 pm edt sat apr 25 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...

ridging slowly rises over lake superior to 30.1 inches by sunday 
morning as 30.4 inch high pressure over northern quebec builds. the 
pattern remains stable over lake superior on sunday while a 29.3 
inch colorado low develops. throughout monday, this low moves 
northeast, arriving in wisconsin monday night. the low then crosses 
lake superior tuesday morning, reaching james bay tuesday night. in 
the wake of the low, 30.2 inch high pressure builds over the 
canadian prairie, sending 30.1 inch high pressure over the lake 
wednesday. this high approaches the great lakes slowly thursday.



lsz267-260800-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
401 pm edt sat apr 25 2026

.late this afternoon...northwest winds 5 to 15 knots. waves calm
to 2 feet. 
.tonight...east winds 5 to 15 knots veering southeast after
midnight. patchy fog after midnight. waves calm to 2 feet. 
.sunday...southeast winds 5 to 15 knots increasing to 10 to
20 knots in the afternoon, then backing east late. patchy fog
through early afternoon. waves calm to 2 feet. 
.sunday night...southeast winds 10 to 20 knots increasing to
15 to 25 knots late. waves building to 1 to 3 feet. 
.monday...southeast winds 20 to 30 knots increasing to gales to
40 knots by mid afternoon. waves building to 7 to 10 feet
occasionally to 13 feet. 
.monday night...southeast gales to 45 knots. rain showers. waves
building to 9 to 12 feet occasionally to 15 feet, then subsiding
to 7 to 10 feet occasionally to 13 feet. 
.tuesday...south gales to 35 knots veering west by mid afternoon.
rain showers likely through early afternoon, then a chance of
rain showers by mid afternoon. waves subsiding to 5 to 8 feet
occasionally to 10 feet, then building to 9 to 12 feet
occasionally to 15 feet. 
.tuesday night...northwest gales to 35 knots diminishing to 10 to
20 knots after midnight. waves subsiding to 3 to 5 feet
occasionally to 7 feet. 
.wednesday...northwest winds 10 to 20 knots. waves subsiding to
1 to 3 feet. 
.thursday...northwest winds 10 to 20 knots veering north. waves
subsiding to calm to 2 feet, then building to 1 to 3 feet. 

$$