fzus61 kbuf 271413
glflo 
expires:202603272100;;381674

open lake forecast for lake ontario
national weather service buffalo ny
1013 am edt fri mar 27 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 strong 30.6 inch high will build from the northern 
plains this afternoon to the ohio valley by saturday afternoon, then 
off the mid atlantic coast sunday. a 30.0 inch trough will sag 
southward across eastern canada monday, then move across the eastern 
great lakes monday night, followed by a deeper 29.5 inch low tuesday 
night into early wednesday.


loz062-272100-
lake ontario open waters from the niagara river to hamlin beach-
1013 am edt fri mar 27 2026

.this afternoon...north winds 5 to 15 knots becoming northwest.
waves 2 to 4 feet subsiding to 1 to 3 feet. 
.tonight...northwest winds 5 to 15 knots. waves 1 to 3 feet. 
.saturday...northwest winds 10 to 15 knots becoming west 15 to
20 knots. waves 2 to 4 feet. 
.saturday night...west winds 15 to 20 knots becoming southwest
10 to 15 knots. waves 2 to 4 feet. 
.sunday...southwest winds 15 to 20 knots diminishing to 10 to
15 knots. waves 2 to 4 feet. 
.monday...southwest winds 10 to 15 knots becoming northeast 15 to
20 knots. a chance of rain showers monday night. waves 1 to
3 feet. 
.tuesday...east winds 15 to 25 knots becoming southwest. rain
showers likely. waves 3 to 6 feet building to 4 to 7 feet. waves
occasionally around 9 feet. 

$$

fzus61 kbuf 271413
glflo 
expires:202603272100;;381676

open lake forecast for lake ontario
national weather service buffalo ny
1013 am edt fri mar 27 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 strong 30.6 inch high will build from the northern 
plains this afternoon to the ohio valley by saturday afternoon, then 
off the mid atlantic coast sunday. a 30.0 inch trough will sag 
southward across eastern canada monday, then move across the eastern 
great lakes monday night, followed by a deeper 29.5 inch low tuesday 
night into early wednesday.


loz065-272100-
lake ontario open waters from mexico bay to the saint lawrence
river-
1013 am edt fri mar 27 2026

.this afternoon...north winds 15 to 20 knots diminishing to 10 to
15 knots. waves 2 to 4 feet subsiding to 1 to 3 feet. 
.tonight...north winds around 10 knots. waves 2 feet or less. 
.saturday...north winds 5 to 10 knots becoming west and
increasing to 15 to 20 knots. waves 1 foot or less building to
3 to 5 feet. 
.saturday night...west winds 15 to 20 knots becoming southwest
10 to 15 knots. waves 3 to 5 feet subsiding to 2 to 4 feet. 
.sunday...south winds 10 to 15 knots becoming southwest. waves
1 to 3 feet. 
.monday...southwest winds 5 to 10 knots becoming northeast and
increasing to 15 to 20 knots. a chance of rain showers monday
night. waves 1 to 3 feet. 
.tuesday...east winds 15 to 25 knots becoming south. rain
showers. waves 1 to 3 feet building to 4 to 7 feet. waves
occasionally around 9 feet. 

$$

fzus61 kbuf 271413
glflo 
expires:202603272100;;381675

open lake forecast for lake ontario
national weather service buffalo ny
1013 am edt fri mar 27 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 strong 30.6 inch high will build from the northern 
plains this afternoon to the ohio valley by saturday afternoon, then 
off the mid atlantic coast sunday. a 30.0 inch trough will sag 
southward across eastern canada monday, then move across the eastern 
great lakes monday night, followed by a deeper 29.5 inch low tuesday 
night into early wednesday.


loz063-064-272100-
lake ontario open waters from hamlin beach to mexico bay-
1013 am edt fri mar 27 2026

.this afternoon...north winds 15 to 20 knots diminishing to 10 to
15 knots. waves 3 to 6 feet subsiding to 1 to 3 feet. 
.tonight...northwest winds 5 to 15 knots becoming north. waves
1 to 3 feet. 
.saturday...northwest winds 10 to 15 knots becoming west 15 to
20 knots. a chance of snow showers. waves 1 to 3 feet building to
3 to 6 feet. 
.saturday night...west winds 15 to 20 knots becoming southwest
10 to 15 knots. waves 3 to 6 feet subsiding to 2 to 4 feet. 
.sunday...south winds 10 to 15 knots becoming southwest. waves
1 to 3 feet. 
.monday...southwest winds 5 to 10 knots becoming northeast and
increasing to 15 to 20 knots. a chance of rain showers monday
night. waves 1 to 3 feet. 
.tuesday...east winds 15 to 25 knots becoming south. rain showers
likely. waves 3 to 6 feet building to 4 to 7 feet. waves
occasionally around 9 feet. 

$$

fzus61 kcle 271342
glfle 
expires:202603272015;;380235

open lake forecast for lake erie
national weather service cleveland oh
942 am edt fri mar 27 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 ridge averaging 30.50 inches will build in across the region 
and move eastward off the east coast through this weekend. as the 
ridge exits to the east on monday, a cold front will waver across 
the region and influence lake erie through early next week.


lez162>164-272015-
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-
942 am edt fri mar 27 2026

.this afternoon...northeast winds 15 to 20 knots becoming north
5 to 15 knots. waves 3 to 6 feet subsiding to 1 to 3 feet. 
.tonight...north winds 5 to 10 knots becoming northwest. waves
2 feet or less. 
.saturday...northwest winds 5 to 15 knots becoming southwest.
waves 2 feet or less. 
.saturday night...south winds 5 to 15 knots becoming southwest.
waves 2 feet or less. 
.sunday...southwest winds 15 to 20 knots diminishing to 10 to
15 knots. waves 1 to 2 feet. 
.monday...southwest winds 10 to 15 knots becoming south 15 to
20 knots. a chance of rain monday night. waves 1 to 2 feet
building to 2 to 4 feet. 
.tuesday...south winds 15 to 25 knots becoming southwest. rain
likely during the day, then a chance of rain tuesday night. waves
2 to 4 feet. 

$$

fzus61 kcle 271342
glfle 
expires:202603272015;;380236

open lake forecast for lake erie
national weather service cleveland oh
942 am edt fri mar 27 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 ridge averaging 30.50 inches will build in across the region 
and move eastward off the east coast through this weekend. as the 
ridge exits to the east on monday, a cold front will waver across 
the region and influence lake erie through early next week.


lez165>167-272015-
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-
942 am edt fri mar 27 2026

.this afternoon...northeast winds 15 to 20 knots becoming north
5 to 15 knots. waves 3 to 6 feet subsiding to 1 to 3 feet. 
.tonight...north winds 5 to 15 knots becoming northwest. a slight
chance of snow late. waves 1 to 3 feet. 
.saturday...northwest winds 5 to 15 knots becoming west. waves
1 to 2 feet. 
.saturday night...southwest winds 5 to 15 knots becoming south.
waves 1 to 3 feet. 
.sunday...southwest winds 15 to 20 knots diminishing to 10 to
15 knots. waves 1 to 3 feet. 
.monday...southwest winds 5 to 15 knots becoming south 15 to
20 knots. a chance of rain. waves 2 to 4 feet building to 3 to
5 feet. 
.tuesday...south winds 15 to 25 knots becoming southwest. rain
likely. waves 3 to 6 feet. 

$$

fzus61 kcle 271342
glfle 
expires:202603272015;;380237

open lake forecast for lake erie
national weather service cleveland oh
942 am edt fri mar 27 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 ridge averaging 30.50 inches will build in across the region 
and move eastward off the east coast through this weekend. as the 
ridge exits to the east on monday, a cold front will waver across 
the region and influence lake erie through early next week.


lez061-168-169-272015-
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-
942 am edt fri mar 27 2026

.this afternoon...northeast winds 15 to 20 knots becoming north
5 to 15 knots. waves 3 to 5 feet subsiding to 1 to 3 feet. 
.tonight...north winds 5 to 10 knots becoming northwest. a slight
chance of snow late. waves 2 feet or less. 
.saturday...northwest winds 5 to 15 knots becoming west. waves
1 to 3 feet. 
.saturday night...southwest winds 5 to 15 knots becoming south.
waves 1 to 3 feet. 
.sunday...southwest winds 10 to 15 knots. waves 1 to 3 feet. 
.monday...southwest winds 5 to 15 knots becoming southeast. a
chance of rain monday night. waves 1 to 2 feet. 
.tuesday...southeast winds 10 to 15 knots becoming southwest
15 to 20 knots. rain likely. waves 1 to 3 feet building to 2 to
4 feet. 

$$

fzus63 kdtx 271352
glfsc 
expires:202603272200;;380583

lake st clair forecast
national weather service detroit/pontiac mi
952 am edt fri mar 27 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...moderate northerly winds hold through friday as cold
air returns. becoming milder and breezy at times through the
weekend, and mainly dry.


lcz460-272200-
lake st clair-
952 am edt fri mar 27 2026

.rest of today...north winds 15 to 20 knots diminishing to 10 to 15
knots in the afternoon. partly sunny. waves 1 to 3 feet.
.tonight...north winds 10 to 15 knots becoming northwest 5 to 10
knots after midnight. partly cloudy. waves 2 feet or less.
.saturday...northwest winds 5 to 10 knots backing to the southwest
early in the afternoon. mostly sunny. waves 2 feet or less.
.saturday night...southwest winds 10 to 15 knots. partly cloudy
early in the evening becoming mostly cloudy. waves 2 feet or less.
.sunday...southwest winds 10 to 15 knots. mostly cloudy becoming
partly cloudy. waves 1 to 3 feet.
.monday...east winds 10 to 15 knots. partly cloudy. a chance of
light rain. waves 2 feet or less.
.tuesday...southwest winds 20 to 25 knots. mostly cloudy with light
rain likely. waves 1 to 3 feet.

$$

fzus63 kdtx 271348
glflh 
expires:202603272200;;380454

open lake forecast for lake huron
national weather service detroit/pontiac mi
948 am edt fri mar 27 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...moderate northerly winds hold through friday as cold
air returns. becoming milder and breezy at times through the
weekend, and mainly dry.


lhz462>464-272200-
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-
948 am edt fri mar 27 2026

.rest of today...north winds 15 to 20 knots decreasing to 10 to
15 knots in the afternoon. freezing spray. waves 4 to 6 feet.
waves occasionally around 8 feet. 
.tonight...north winds 5 to 10 knots becoming west 10 to 15 knots
after midnight...then becoming northwest 15 to 20 knots early in
the morning. waves 2 to 4 feet subsiding to 1 to 3 feet after
midnight...then building to 3 to 5 feet early in the morning. 
.saturday...northwest winds 15 to 20 knots becoming west 10 to
15 knots in the late morning and afternoon. waves 3 to 5 feet. 
.saturday night...southwest winds 10 to 15 knots becoming south
15 to 20 knots after midnight. waves 1 to 3 feet building to 2 to
4 feet in the late evening and overnight. 
.sunday...south winds 15 to 20 knots becoming southwest 10 to
15 knots. waves 3 to 5 feet subsiding to 1 to 3 feet late in the
afternoon. 
.monday...southwest winds 5 to 10 knots becoming northeast by
midnight. a chance of rain by midnight. waves 1 to 3 feet
building to 2 to 4 feet by midnight. 
.tuesday...southeast winds 15 to 20 knots becoming south 20 to
25 knots by midnight. a chance of rain early in the morning...
then rain likely. waves 5 to 7 feet. waves occasionally around
10 feet. 


$$

fzus63 kdtx 271348
glflh 
expires:202603272200;;380452

open lake forecast for lake huron
national weather service detroit/pontiac mi
948 am edt fri mar 27 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...moderate northerly winds hold through friday as cold
air returns. becoming milder and breezy at times through the
weekend, and mainly dry.


lhz361-272200-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
948 am edt fri mar 27 2026

.rest of today...light and variable winds becoming north 5 to
10 knots early in the afternoon...then backing to the west late
in the afternoon. waves 2 feet or less. 
.tonight...northwest winds 10 to 15 knots increasing to 15 to
20 knots after midnight...then decreasing to 10 to 15 knots early
in the morning. waves 1 to 3 feet building to 3 to 5 feet after
midnight. 
.saturday...west winds 10 to 15 knots increasing to 15 to
20 knots in the late morning and afternoon. waves 2 to 4 feet. 
.saturday night...southwest winds 10 to 15 knots. waves 2 to
4 feet subsiding to 1 to 3 feet in the late evening and
overnight. 
.sunday...south winds 10 to 15 knots becoming southwest 5 to
10 knots. waves 1 to 3 feet. 
.monday...west winds 5 to 10 knots veering to the north until
early evening...then becoming east 10 to 15 knots by midnight. a
chance of rain by midnight. waves 2 feet or less building to 2 to
4 feet by midnight. 
.tuesday...east winds 15 to 20 knots increasing to 20 to 25 knots
by midnight. a chance of rain early in the morning...then rain
likely. waves 6 to 9 feet. waves occasionally around 12 feet. 

wave heights are for ice free areas.

$$

fzus63 kdtx 271348
glflh 
expires:202603272200;;380453

open lake forecast for lake huron
national weather service detroit/pontiac mi
948 am edt fri mar 27 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...moderate northerly winds hold through friday as cold
air returns. becoming milder and breezy at times through the
weekend, and mainly dry.


lhz362-363-272200-
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-
948 am edt fri mar 27 2026

.rest of today...north winds 10 to 15 knots decreasing to 5 to
10 knots in the afternoon. freezing spray late in the morning.
waves 3 to 5 feet. 
.tonight...north winds 5 to 10 knots backing to the west late in
the evening...then becoming northwest 15 to 20 knots after
midnight. waves 1 to 3 feet building to 4 to 6 feet after
midnight. waves occasionally around 8 feet. 
.saturday...northwest winds 15 to 20 knots becoming west 10 to
15 knots in the late morning and early afternoon...then backing
to the southwest early in the afternoon. waves 4 to 6 feet. waves
occasionally around 8 feet. 
.saturday night...southwest winds 10 to 15 knots becoming south
15 to 20 knots after midnight. waves 3 to 5 feet. 
.sunday...south winds 15 to 20 knots becoming southwest 10 to
15 knots. waves 3 to 5 feet subsiding to 2 to 4 feet late in the
evening. 
.monday...southwest winds 10 to 15 knots becoming west 5 to
10 knots until early evening...then becoming east 15 to 20 knots
by midnight. a chance of. waves 1 to 3 feet building to 3 to
5 feet by midnight. 
.tuesday...east 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 20 to 25 knots
with gusts to around 30 knots by midnight. a chance of rain until
afternoon...then rain likely . waves 6 to 9 feet. waves
occasionally around 12 feet. 

wave heights are for ice free areas.

$$

fzus63 kmkx 271917
glflm 
expires:202603280330;;394667

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
217 pm cdt fri mar 27 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...

lighter winds expected this evening as the high pressure around 
30.8 inches slowly builds into the upper midwest from the plains
overnight into saturday. winds will gradually back to southerly 
into saturday afternoon, as high pressure skirts southeast of 
lake michigan while low pressure around 29.7 inches develops in 
the lee of the colorado rockies. winds may shift to the north and 
northeast on monday as a warm front sets up to the south of the 
region, but expecting to increase and turn more southerly for 
tuesday. thunderstorm chances increase for tuesday as well. 


lmz080-669-671-673-675-777-779-870-872-874-876-878-280330-
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-
217 pm cdt fri mar 27 2026

sheboygan wi to pentwater mi south...

.tonight...northwest winds 15 to 25 kt diminishing to 10 to
20 kt. isolated snow showers this evening. waves 3 to 5 ft
building to 5 to 8 ft occasionally to 10 ft. 
.saturday...northwest winds 10 to 15 kt becoming west late in the
morning, then becoming southwest 10 to 20 kt early in the
afternoon becoming south 15 to 25 kt late. waves 4 to 7 ft
occasionally to 9 ft subsiding to 4 to 6 ft occasionally to 8 ft.
.saturday night...south winds 15 to 25 kt becoming southwest.
waves 4 to 7 ft occasionally to 9 ft. 
.sunday...southwest winds 15 to 25 kt becoming south 10 to 20 kt.
waves 4 to 7 ft occasionally to 9 ft subsiding to 4 to 6 ft
occasionally to 8 ft. 
.sunday night...south winds 10 to 20 kt diminishing to 10 to
15 kt. waves 3 to 5 ft. 
.monday...south winds 10 to 15 kt backing to northeast. waves
2 to 4 ft. 
.monday night...south winds 15 to 25 kt increasing to 30 kt.
chance of rain and thunderstorms. waves 4 to 6 ft occasionally to
8 ft building to 5 to 8 ft occasionally to 10 ft. 
.tuesday...southwest winds to 30 kt. rain likely with a chance of
thunderstorms. waves 6 to 9 ft occasionally to 12 ft. 
.wednesday...north winds to 30 kt. waves 10 to 14 ft occasionally
to 18 ft.  

$$

fzus63 kmkx 271917
glflm 
expires:202603280330;;394666

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
217 pm cdt fri mar 27 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...

lighter winds expected this evening as the high pressure around 
30.8 inches slowly builds into the upper midwest from the plains
overnight into saturday. winds will gradually back to southerly 
into saturday afternoon, as high pressure skirts southeast of 
lake michigan while low pressure around 29.7 inches develops in 
the lee of the colorado rockies. winds may shift to the north and 
northeast on monday as a warm front sets up to the south of the 
region, but expecting to increase and turn more southerly for 
tuesday. thunderstorm chances increase for tuesday as well. 


lmz261-362-364-366-563-565-567-868-280330-
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-
217 pm cdt fri mar 27 2026

sheboygan wi to pentwater mi north...

.tonight...northwest winds 15 to 25 kt diminishing to 10 to
20 kt. scattered snow showers this evening. waves 3 to 5 ft
building to 5 to 8 ft occasionally to 10 ft, then subsiding to
4 to 6 ft occasionally to 8 ft. 
.saturday...west winds 10 to 20 kt becoming southwest 15 to 25 kt
early in the afternoon, then increasing to 30 kt late. waves 3 to
5 ft building to 4 to 7 ft occasionally to 9 ft. 
.saturday night...south winds to 30 kt becoming southwest. waves
6 to 9 ft occasionally to 12 ft. 
.sunday...southwest winds 15 to 25 kt becoming south 10 to 20 kt.
waves 4 to 7 ft occasionally to 9 ft subsiding to 4 to 6 ft
occasionally to 8 ft. 
.sunday night...south winds 10 to 15 kt becoming west. waves 3 to
5 ft. 
.monday...northeast winds 10 to 15 kt. waves 2 to 4 ft. 
.monday night...east winds 15 to 25 kt becoming southeast. chance
of rain and thunderstorms. waves 3 to 5 ft building to 4 to 7 ft
occasionally to 9 ft. 
.tuesday...southeast winds 15 to 25 kt backing to north. chance
of rain and thunderstorms. waves 7 to 10 ft occasionally to
13 ft. 
.wednesday...north winds to 30 kt. waves 8 to 11 ft occasionally
to 14 ft.  

$$

fzus63 kmqt 271401
glfls 
expires:202603272000;;380887

open lake forecast for lake superior
national weather service marquette mi
1000 am edt fri mar 27 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...

30.6 inch high pressure slides from the northern plains into the 
ohio river valley today through saturday. the high weakens to 30.5 
inches as it continues eastward, moving offshore into the atlantic 
sunday. upstream on sunday, a 29.6 inch low will organize over the 
central plains, lifting a 30.0 inch trough over lake superior by 
sunday night. this trough will linger over the great lakes, followed 
by the low around tuesday. as the low lifts into canada, 30.3 inch 
high pressure builds over the northern plains, gradually building 
pressure over the upper great lakes by wednesday as the high presses 
east through ontario near 30.5 inches.



lsz267-272000-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
1000 am edt fri mar 27 2026

.rest of today...southwest winds 15 to 25 knots veering northwest
in the afternoon, then increasing to 20 to 30 knots late. a
chance of snow showers. waves 1 to 3 feet building to 5 to 8 feet
occasionally to 10 feet. 
.tonight...northwest winds 20 to 30 knots diminishing to 15 to
25 knots late. freezing spray. a chance of snow showers. waves
building to 5 to 9 feet occasionally to 11 feet. 
.saturday...west winds 15 to 25 knots backing southwest late.
freezing spray through early afternoon. a chance of snow showers.
waves subsiding to 2 to 4 feet, then building to 3 to 5 feet
occasionally to 7 feet. 
.saturday night...south winds 15 to 25 knots diminishing to 10 to
20 knots after midnight. waves building to 3 to 6 feet
occasionally to 8 feet, then subsiding to calm to 2 feet. 
.sunday...east winds 10 to 20 knots backing north by mid
afternoon. waves calm to 2 feet. 
.sunday night...west winds 10 to 20 knots becoming northwest 5 to
15 knots after midnight. waves calm to 2 feet. 
.monday...north winds 5 to 15 knots becoming east 15 to 25 knots.
a chance of rain showers, possibly mixed with snow. waves
building to 3 to 6 feet occasionally to 8 feet. 
.tuesday...east winds 20 to 30 knots. a chance of rain showers.
waves building to 4 to 7 feet occasionally to 9 feet, then
subsiding to 3 to 6 feet occasionally to 8 feet. 

$$

fzus63 kmqt 271401
glfls 
expires:202603272000;;380885

open lake forecast for lake superior
national weather service marquette mi
1000 am edt fri mar 27 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...

30.6 inch high pressure slides from the northern plains into the 
ohio river valley today through saturday. the high weakens to 30.5 
inches as it continues eastward, moving offshore into the atlantic 
sunday. upstream on sunday, a 29.6 inch low will organize over the 
central plains, lifting a 30.0 inch trough over lake superior by 
sunday night. this trough will linger over the great lakes, followed 
by the low around tuesday. as the low lifts into canada, 30.3 inch 
high pressure builds over the northern plains, gradually building 
pressure over the upper great lakes by wednesday as the high presses 
east through ontario near 30.5 inches.



lsz265-272000-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
1000 am edt fri mar 27 2026

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

$$

fzus63 kmqt 271401
glfls 
expires:202603272000;;380884

open lake forecast for lake superior
national weather service marquette mi
1000 am edt fri mar 27 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...

30.6 inch high pressure slides from the northern plains into the 
ohio river valley today through saturday. the high weakens to 30.5 
inches as it continues eastward, moving offshore into the atlantic 
sunday. upstream on sunday, a 29.6 inch low will organize over the 
central plains, lifting a 30.0 inch trough over lake superior by 
sunday night. this trough will linger over the great lakes, followed 
by the low around tuesday. as the low lifts into canada, 30.3 inch 
high pressure builds over the northern plains, gradually building 
pressure over the upper great lakes by wednesday as the high presses 
east through ontario near 30.5 inches.



lsz264-272000-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
1000 am edt fri mar 27 2026

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

$$

fzus63 kmqt 271401
glfls 
expires:202603272000;;380883

open lake forecast for lake superior
national weather service marquette mi
1000 am edt fri mar 27 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...

30.6 inch high pressure slides from the northern plains into the 
ohio river valley today through saturday. the high weakens to 30.5 
inches as it continues eastward, moving offshore into the atlantic 
sunday. upstream on sunday, a 29.6 inch low will organize over the 
central plains, lifting a 30.0 inch trough over lake superior by 
sunday night. this trough will linger over the great lakes, followed 
by the low around tuesday. as the low lifts into canada, 30.3 inch 
high pressure builds over the northern plains, gradually building 
pressure over the upper great lakes by wednesday as the high presses 
east through ontario near 30.5 inches.



lsz263-272000-
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-
1000 am edt fri mar 27 2026

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

$$

fzus63 kmqt 271401
glfls 
expires:202603272000;;380882

open lake forecast for lake superior
national weather service marquette mi
1000 am edt fri mar 27 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...

30.6 inch high pressure slides from the northern plains into the 
ohio river valley today through saturday. the high weakens to 30.5 
inches as it continues eastward, moving offshore into the atlantic 
sunday. upstream on sunday, a 29.6 inch low will organize over the 
central plains, lifting a 30.0 inch trough over lake superior by 
sunday night. this trough will linger over the great lakes, followed 
by the low around tuesday. as the low lifts into canada, 30.3 inch 
high pressure builds over the northern plains, gradually building 
pressure over the upper great lakes by wednesday as the high presses 
east through ontario near 30.5 inches.



lsz162-272000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1000 am edt fri mar 27 2026 /900 am cdt fri mar 27 2026/

.rest of today...northwest winds 10 to 20 knots increasing to
20 to 30 knots. waves calm to 2 feet building to 3 to 5 feet
occasionally to 7 feet. 
.tonight...northwest winds 15 to 25 knots backing west after
midnight, then diminishing to 10 to 20 knots late. waves
subsiding to calm to 2 feet. 
.saturday...southwest winds 10 to 20 knots increasing to 15 to
25 knots in the afternoon, then becoming south 10 to 20 knots
late. a slight chance of snow showers. waves building to 1 to
3 feet. 
.saturday night...east winds 10 to 20 knots backing northeast
after midnight. waves subsiding to calm to 2 feet. 
.sunday...northeast winds 10 to 20 knots diminishing to 5 to
15 knots by mid afternoon. waves calm to 2 feet. 
.sunday night...north winds 5 to 15 knots veering northeast after
midnight. waves calm to 2 feet. 
.monday...northeast winds 10 to 20 knots becoming east 15 to
25 knots. waves building to 3 to 6 feet occasionally to 8 feet. 
.tuesday...east winds 15 to 25 knots backing north. a chance of
rain showers. waves building to 4 to 8 feet occasionally to
10 feet. 

$$

fzus63 kmqt 271401
glfls 
expires:202603272000;;380886

open lake forecast for lake superior
national weather service marquette mi
1000 am edt fri mar 27 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...

30.6 inch high pressure slides from the northern plains into the 
ohio river valley today through saturday. the high weakens to 30.5 
inches as it continues eastward, moving offshore into the atlantic 
sunday. upstream on sunday, a 29.6 inch low will organize over the 
central plains, lifting a 30.0 inch trough over lake superior by 
sunday night. this trough will linger over the great lakes, followed 
by the low around tuesday. as the low lifts into canada, 30.3 inch 
high pressure builds over the northern plains, gradually building 
pressure over the upper great lakes by wednesday as the high presses 
east through ontario near 30.5 inches.



lsz266-272000-
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-
1000 am edt fri mar 27 2026

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

$$