fzus61 kbuf 171502
glflo 
expires:202602172200;;788094

open lake forecast for lake ontario
national weather service buffalo ny
1002 am est tue feb 17 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 30.1 inch ridge will build over the lower great lakes 
today. an elongated 29.4 inch low will stretch from minnesota to the 
central great lakes wednesday, with one piece of this low passing 
just south of the lake wednesday night. a 29.3 inch low will develop 
over the central plains thursday, then move to the central great 
lakes by friday night, weakening to 29.7 inches as it moves just 
north of lake ontario saturday. a 30.4 inch high will then slowly 
build east across the great lakes through early next week.


loz062-063-172200-
lake ontario open waters from the niagara river to sodus bay-
1002 am est tue feb 17 2026

.this afternoon...west winds 5 to 10 knots. widespread dense fog.
waves 1 to 3 feet. 
.tonight...west winds 10 knots or less becoming east and
increasing to 15 to 20 knots after midnight. widespread dense
fog. a chance of rain and snow late. waves 1 to 3 feet. 
.wednesday...east winds 15 to 25 knots becoming northeast to
30 knots. rain, snow, sleet and freezing rain. waves 3 to 5 feet
building to 5 to 9 feet. waves occasionally around 11 feet. 
.wednesday night...northeast winds 15 to 20 knots. snow, freezing
rain and rain in the evening, then a chance of snow and freezing
rain overnight. waves 5 to 8 feet subsiding to 3 to 5 feet. waves
occasionally around 10 feet. 
.thursday...east winds 15 to 25 knots. a chance of rain and
freezing rain thursday night. waves 2 to 4 feet building to 5 to
8 feet. waves occasionally around 10 feet. 
.friday...east winds to 30 knots becoming west and diminishing to
15 to 20 knots. rain with a chance of freezing rain during the
day, then rain with a chance of snow friday night. waves 6 to
9 feet subsiding to 3 to 6 feet. waves occasionally around
11 feet. 
.saturday...west winds 15 to 20 knots becoming north 10 to
15 knots. a chance of snow showers. waves 3 to 5 feet subsiding
to 2 to 4 feet. 

$$

fzus61 kbuf 171502
glflo 
expires:202602172200;;788095

open lake forecast for lake ontario
national weather service buffalo ny
1002 am est tue feb 17 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 30.1 inch ridge will build over the lower great lakes 
today. an elongated 29.4 inch low will stretch from minnesota to the 
central great lakes wednesday, with one piece of this low passing 
just south of the lake wednesday night. a 29.3 inch low will develop 
over the central plains thursday, then move to the central great 
lakes by friday night, weakening to 29.7 inches as it moves just 
north of lake ontario saturday. a 30.4 inch high will then slowly 
build east across the great lakes through early next week.


loz064-065-172200-
lake ontario open waters from sodus bay to the saint lawrence
river-
1002 am est tue feb 17 2026

.this afternoon...west winds 5 to 10 knots. widespread dense fog.
waves 1 to 3 feet. 
.tonight...west winds 10 knots or less becoming northeast.
widespread dense fog. waves 2 feet or less. 
.wednesday...northeast winds 10 to 15 knots increasing to 15 to
20 knots. snow and rain. waves 1 to 3 feet building to 3 to
5 feet. 
.wednesday night...northeast winds 15 to 20 knots. snow with a
chance of freezing rain in the evening, then a chance of freezing
rain and snow overnight. waves 3 to 5 feet subsiding to 2 to
4 feet. 
.thursday...northeast winds 15 to 20 knots becoming east. a
chance of freezing rain thursday night. waves 1 to 3 feet. 
.friday...east winds 15 to 25 knots becoming southwest. rain,
snow with a chance of freezing rain during the day, then snow and
rain friday night. waves 2 to 4 feet building to 3 to 5 feet. 
.saturday...northeast winds 15 to 20 knots becoming north 10 to
15 knots. a chance of snow showers and freezing rain during the
day, then a chance of snow showers saturday night. waves 3 to
5 feet subsiding to 1 to 3 feet. 

$$

fzus63 kdtx 171447
glfsc 
expires:202602172300;;787386

lake st clair forecast
national weather service detroit/pontiac mi
947 am est tue feb 17 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 weak cold front stalls across the southern great
lakes and awaits the next large low pressure system developing in
the plains today. dense fog holds across most of the central
great lakes today into wednesday. plains system deepens to 29.40
inches as it moves into the midwest resulting in easterly gales
over northern lake huron by wednesday, and a gale warning is now
in effect. a heavy wintry mix of precipitation is also expected
with the system wednesday and thursday.


lcz460-172300-
lake st clair-
947 am est tue feb 17 2026

...dense fog advisory in effect until 10 am est wednesday...

.rest of today...light and variable winds becoming east 5 to 10
knots late in the afternoon. mostly cloudy. widespread dense fog.
.tonight...east winds 5 to 10 knots becoming southeast 10 to 15
knots after midnight. widespread dense fog. a chance of light rain
late in the evening. light rain after midnight.
.wednesday...southeast winds 15 to 20 knots becoming southwest 10 to
15 knots in the late morning and afternoon. widespread dense fog
until late afternoon. rain until late afternoon. a chance of light
rain early in the afternoon.
.wednesday night...southwest winds 10 to 15 knots becoming southeast
5 to 10 knots in the late evening and overnight. partly cloudy.
.thursday...east winds 5 to 10 knots increasing to 15 to 20 knots.
mostly cloudy. light rain likely in the evening.
.friday...west winds 15 to 20 knots. mostly cloudy. light rain
likely.
.saturday...northwest winds 15 to 20 knots. mostly cloudy.

waves omitted due to ice coverage.

$$

fzus63 kdtx 171447
glflh 
expires:202602172300;;787382

open lake forecast for lake huron
national weather service detroit/pontiac mi
947 am est tue feb 17 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 weak cold front stalls across the southern great
lakes and awaits the next large low pressure system developing in
the plains today. dense fog holds across most of the central
great lakes today into wednesday. plains system deepens to 29.40
inches as it moves into the midwest resulting in easterly gales
over northern lake huron by wednesday, and a gale warning is now
in effect. a heavy wintry mix of precipitation is also expected
with the system wednesday and thursday.


lhz361-362-172300-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
lake huron from presque isle light to sturgeon point mi beyond
5nm off shore-
947 am est tue feb 17 2026

...dense fog advisory in effect until 10 pm est this evening...
...gale warning in effect from late tonight through wednesday
afternoon...

.rest of today...light and variable winds. widespread dense fog.
waves 2 feet or less. 
.tonight...northeast winds 5 to 10 knots becoming east to
30 knots with gusts to 35 knot gales. a chance of snow in the
evening...then snow and rain after midnight. widespread dense fog
in the evening...then areas of fog after midnight. waves 2 feet
or less building to 8 to 12 feet. waves occasionally around
15 feet. 
.wednesday...east at 35 knot gales decreasing to 30 knots in the
late morning and afternoon. gusts to 40 knot gales. patchy dense
fog in the morning. snow and rain in the morning...then snow and
rain likely in the afternoon. waves 12 to 16 feet. waves
occasionally around 20 feet. a gale warning may be needed. 
.wednesday night...east winds 20 to 25 knots. gusts to 30 knots .
a chance of snow in the evening. waves 8 to 12 feet. waves
occasionally around 15 feet. 
.thursday...east winds 20 to 25 knots decreasing to 15 to
20 knots late in the morning...then increasing to 20 to 25 knots
with gusts to 35 knot gales late in the afternoon. a chance of
rain late in the evening. waves 8 to 12 feet. waves occasionally
around 15 feet. 
.friday...east winds to 30 knots with gusts to 35 knot gales
decreasing to 15 to 20 knots. snow and rain likely early in the
morning...then a chance of snow and rain early in the evening.
waves 10 to 14 feet. waves occasionally around 18 feet. 
.saturday...north winds 15 to 20 knots becoming northwest 10 to
15 knots early in the evening...then increasing to 15 to 20 knots
by midnight. waves 5 to 7 feet. waves occasionally around
10 feet. 

wave heights are for ice free areas.

$$

fzus63 kdtx 171447
glflh 
expires:202602172300;;787383

open lake forecast for lake huron
national weather service detroit/pontiac mi
947 am est tue feb 17 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 weak cold front stalls across the southern great
lakes and awaits the next large low pressure system developing in
the plains today. dense fog holds across most of the central
great lakes today into wednesday. plains system deepens to 29.40
inches as it moves into the midwest resulting in easterly gales
over northern lake huron by wednesday, and a gale warning is now
in effect. a heavy wintry mix of precipitation is also expected
with the system wednesday and thursday.


lhz363-172300-
lake huron from sturgeon point to alabaster mi beyond 5nm off
shore-
947 am est tue feb 17 2026

...dense fog advisory in effect until 10 pm est this evening...

.rest of today...light and variable winds. widespread dense fog. 
.tonight...east winds 5 to 10 knots increasing to 15 to 20 knots.
a chance of snow in the evening...then rain with freezing rain
and snow likely after midnight. widespread dense fog in the
evening...then areas of dense fog after midnight. 
.wednesday...east winds 20 to 25 knots with gusts to around
30 knots decreasing to 15 to 20 knots early in the afternoon.
widespread dense fog in the morning. rain and snow in the
morning...then rain with snow likely in the afternoon. 
.wednesday night...east winds 15 to 20 knots decreasing to 10 to
15 knots in the late evening and overnight. 
.thursday...east winds 10 to 15 knots increasing to 15 to
20 knots late in the afternoon. a chance of rain...freezing rain
and snow late in the evening. 
.friday...east winds 20 to 25 knots with gusts to around 30 knots
becoming southwest 15 to 20 knots . a chance of freezing rain
early in the morning. rain likely early in the morning. a chance
of rain early in the evening. 
.saturday...west winds 15 to 20 knots becoming northwest 10 to
15 knots early in the evening...then increasing to 15 to 20 knots
by midnight. 

waves omitted due to ice coverage.

$$

fzus63 kdtx 171447
glflh 
expires:202602172300;;787384

open lake forecast for lake huron
national weather service detroit/pontiac mi
947 am est tue feb 17 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 weak cold front stalls across the southern great
lakes and awaits the next large low pressure system developing in
the plains today. dense fog holds across most of the central
great lakes today into wednesday. plains system deepens to 29.40
inches as it moves into the midwest resulting in easterly gales
over northern lake huron by wednesday, and a gale warning is now
in effect. a heavy wintry mix of precipitation is also expected
with the system wednesday and thursday.


lhz462>464-172300-
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-
947 am est tue feb 17 2026

...dense fog advisory in effect until 10 am est wednesday...

.rest of today...light and variable winds. widespread dense fog. 
.tonight...east winds 5 to 10 knots increasing to 15 to 20 knots.
a chance of rain in the evening...then rain with freezing rain
likely after midnight. widespread dense fog. 
.wednesday...east winds 15 to 20 knots becoming southeast 10 to
15 knots early in the afternoon. widespread dense fog in the
morning. rain.
.wednesday night...southeast winds 10 to 15 knots becoming east
5 to 10 knots in the late evening and overnight. 
.thursday...southeast winds 10 to 15 knots becoming east 15 to
20 knots late in the evening. a chance of rain and snow late in
the evening. 
.friday...east winds 20 to 25 knots with gusts to around 30 knots
becoming southeast 15 to 20 knots in the late morning and early
afternoon...then veering to the southwest . rain likely early in
the morning...then a chance of rain early in the evening. 
.saturday...west winds 15 to 20 knots decreasing to 10 to
15 knots until early evening...then veering to the northwest by
midnight. 

waves omitted due to ice coverage.

$$

fzus63 kmkx 171442
glflm 
expires:202602172215;;787289

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
842 am cst tue feb 17 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...

east to southeast winds will increase today into tonight as 
strong, compact low pressure of 29.1 inches approaches from the
dakotas. high-end, easterly gales are expected from midnight into
wednesday afternoon over the northern third of the lake, where a 
gale warning remains in effect. the warmer airmass over the chilly
lake waters should limit the mixing down of higher gusts 
elsewhere across the lake.

winds will ease later wednesday into thursday and become southerly
as that low occludes and weakens to 29.5 inches over northern
minnesota. winds will increase thursday night into friday night 
as another strong low pressure system around 29.2 inches tracks
from iowa into central wisconsin. that low will cross northern or
central lake michigan friday morning and gradually weaken through
saturday. gusty northerly winds are expected sunday into monday.


lmz261-362-364-563-172215-
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 rock island passage to sturgeon bay wi-
842 am cst tue feb 17 2026

sturgeon bay wi to point betsie mi north...

...gale warning in effect from late tonight through wednesday
afternoon...

.rest of today...east winds 5 to 10 kt becoming northeast 10 to
20 kt. waves 2 to 4 ft. 
.tonight...east winds 15 to 25 kt increasing to gales to 45 kt.
chance of snow and slight chance of rain in the evening, then
rain and snow overnight. waves 3 to 5 ft building to 8 to 11 ft
occasionally to 14 ft. 
.wednesday...east gales to 45 kt becoming southeast gales to
35 kt. rain and snow in the morning, then rain likely with snow
in the afternoon. waves 8 to 12 ft occasionally to 16 ft
subsiding to 7 to 10 ft occasionally to 13 ft. 
.wednesday night...southeast gales to 35 kt diminishing to 30 kt.
chance of snow in the evening. waves 5 to 8 ft occasionally to
10 ft subsiding to 4 to 6 ft occasionally to 8 ft. 
.thursday...east winds to 30 kt. waves 4 to 6 ft occasionally to
8 ft. 
.thursday night...east winds to 30 kt increasing to gales to
35 kt. chance of rain and snow. waves 4 to 6 ft occasionally to
8 ft building to 5 to 8 ft occasionally to 10 ft. 
.friday...east gales to 35 kt diminishing to 30 kt. snow likely.
waves 7 to 10 ft occasionally to 13 ft. 
.saturday...northwest winds 15 to 25 kt diminishing to 10 to
20 kt. waves 4 to 6 ft occasionally to 8 ft subsiding to 3 to
5 ft.  

$$

fzus63 kmkx 171442
glflm 
expires:202602172215;;787290

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
842 am cst tue feb 17 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...

east to southeast winds will increase today into tonight as 
strong, compact low pressure of 29.1 inches approaches from the
dakotas. high-end, easterly gales are expected from midnight into
wednesday afternoon over the northern third of the lake, where a 
gale warning remains in effect. the warmer airmass over the chilly
lake waters should limit the mixing down of higher gusts 
elsewhere across the lake.

winds will ease later wednesday into thursday and become southerly
as that low occludes and weakens to 29.5 inches over northern
minnesota. winds will increase thursday night into friday night 
as another strong low pressure system around 29.2 inches tracks
from iowa into central wisconsin. that low will cross northern or
central lake michigan friday morning and gradually weaken through
saturday. gusty northerly winds are expected sunday into monday.


lmz080-366-565-567-669-671-673-675-777-779-868-870-872-874-876-
878-172215-
lake michigan from michigan city in to st. joseph mi 5 nm
offshore to mid lake-
lake michigan from point betsie to manistee mi 5 nm offshore to
mid lake-
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 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 pentwater to manistee mi 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-
842 am cst tue feb 17 2026

sturgeon bay wi to point betsie mi south...

.rest of today...east winds 10 to 20 kt. waves 2 to 4 ft. 
.tonight...east winds 15 to 25 kt becoming south to 30 kt. rain
likely in the evening, then rain overnight. waves 3 to 5 ft
building to 6 to 9 ft occasionally to 12 ft. 
.wednesday...south winds to 30 kt becoming southwest 15 to 25 kt.
chance of rain in the morning. waves 6 to 9 ft occasionally to
12 ft subsiding to 4 to 7 ft occasionally to 9 ft. 
.wednesday night...southwest winds 10 to 15 kt becoming south.
waves 4 to 6 ft occasionally to 8 ft subsiding to 2 to 4 ft. 
.thursday...southeast winds 10 to 15 kt becoming east 10 to
20 kt. chance of rain in the afternoon. waves 1 to 3 ft building
to 2 to 4 ft. 
.thursday night...east winds 15 to 25 kt becoming southeast to
30 kt. rain likely. waves 4 to 7 ft occasionally to 9 ft building
to 5 to 8 ft occasionally to 10 ft. 
.friday...southwest winds to 30 kt becoming west. chance of rain
and snow. waves 8 to 11 ft occasionally to 14 ft. 
.saturday...northwest winds 15 to 25 kt. waves 7 to 10 ft
occasionally to 13 ft.  

$$

fzus63 kmqt 171501
glfls 
expires:202602172100;;787959

open lake forecast for lake superior
national weather service marquette mi
1000 am est tue feb 17 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...

high pressure of 30.1 inches remains over lake superior this morning 
through the afternoon as a 30.4 inch ridge crosses northern ontario 
today. pressure will gradually fall through tonight to 29.6 inches 
over the lake by wednesday morning as a 29.1 inch low moves from the 
rockies to the northern plains. 29.8 inch troughing then persists 
over the lake through thursday, deepening back to 29.5 inches by 
friday morning as a 29.3 inch low approaches upper michigan from the 
south.



lsz162-172100-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1000 am est tue feb 17 2026 /900 am cst tue feb 17 2026/

...gale warning in effect from 4 pm est /3 pm cst/ this afternoon
to 10 pm est /9 pm cst/ this evening...
...storm warning in effect from 10 pm est /9 pm cst/ this evening
through wednesday evening...

.rest of today...east winds 10 to 20 knots increasing to gales to
40 knots. a slight chance of snow showers in the afternoon. waves
calm to 2 feet building to 4 to 7 feet occasionally to 9 feet. 
.tonight...east gales to 45 knots increasing to storm force winds
to 55 knots late. a chance of snow, possibly mixed with freezing
rain in the evening, then snow after midnight. waves building to
7 to 10 feet occasionally to 13 feet. 
.wednesday...east storm force winds to 55 knots diminishing to
gales to 45 knots by mid afternoon. snow. waves subsiding to 6 to
9 feet occasionally to 11 feet, then building to 7 to 10 feet
occasionally to 13 feet. 
.wednesday night...east gales to 45 knots. snow showers likely in
the evening, then a chance of snow showers after midnight. waves
subsiding to 5 to 8 feet occasionally to 10 feet. 
.thursday...east gales to 35 knots becoming northeast 20 to
30 knots in the afternoon. a chance of snow showers. waves
subsiding to 3 to 6 feet occasionally to 8 feet. 
.thursday night...northeast winds 20 to 30 knots. a chance of
snow showers. waves subsiding to 3 to 5 feet occasionally to
7 feet. 
.friday...northeast winds 20 to 30 knots becoming north 15 to
25 knots. a chance of snow. waves subsiding to 2 to 4 feet, then
building to 3 to 6 feet occasionally to 8 feet. 
.saturday...northwest winds 10 to 20 knots. waves subsiding to
calm to 2 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 171501
glfls 
expires:202602172100;;787960

open lake forecast for lake superior
national weather service marquette mi
1000 am est tue feb 17 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...

high pressure of 30.1 inches remains over lake superior this morning 
through the afternoon as a 30.4 inch ridge crosses northern ontario 
today. pressure will gradually fall through tonight to 29.6 inches 
over the lake by wednesday morning as a 29.1 inch low moves from the 
rockies to the northern plains. 29.8 inch troughing then persists 
over the lake through thursday, deepening back to 29.5 inches by 
friday morning as a 29.3 inch low approaches upper michigan from the 
south.



lsz263-172100-
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 est tue feb 17 2026

...gale warning in effect from late tonight through late
wednesday night...

.rest of today...northeast winds 5 to 15 knots increasing to
15 to 25 knots by late morning, then becoming east 20 to 30 knots
by mid afternoon. waves calm to 2 feet building to 3 to 6 feet
occasionally to 8 feet. 
.tonight...east gales to 45 knots. a chance of snow, possibly
mixed with freezing rain in the evening, then snow after
midnight. waves building to 12 to 17 feet occasionally to
21 feet. 
.wednesday...east gales to 45 knots with a few storm force gusts
to 55 knots possible diminishing to gales to 45 knots. snow.
rain, possibly mixed with freezing rain in the afternoon. waves
building to 15 to 20 feet occasionally to 25 feet. 
.wednesday night...east gales to 45 knots. a chance of snow
showers. waves subsiding to 10 to 14 feet occasionally to
18 feet. 
.thursday...east gales to 35 knots diminishing to 20 to 30 knots
in the afternoon. a chance of snow showers. waves subsiding to
6 to 9 feet occasionally to 11 feet. 
.thursday night...east winds 20 to 30 knots becoming northeast
gales to 35 knots after midnight. a chance of snow showers. waves
building to 8 to 11 feet occasionally to 14 feet. 
.friday...northeast winds 20 to 30 knots becoming north 15 to
25 knots. a chance of snow. waves subsiding to 3 to 6 feet
occasionally to 8 feet. 
.saturday...northwest winds 10 to 20 knots. waves subsiding to
calm to 2 feet, then building to 1 to 3 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 171501
glfls 
expires:202602172100;;787961

open lake forecast for lake superior
national weather service marquette mi
1000 am est tue feb 17 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...

high pressure of 30.1 inches remains over lake superior this morning 
through the afternoon as a 30.4 inch ridge crosses northern ontario 
today. pressure will gradually fall through tonight to 29.6 inches 
over the lake by wednesday morning as a 29.1 inch low moves from the 
rockies to the northern plains. 29.8 inch troughing then persists 
over the lake through thursday, deepening back to 29.5 inches by 
friday morning as a 29.3 inch low approaches upper michigan from the 
south.



lsz264-172100-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
1000 am est tue feb 17 2026

...gale warning in effect from late tonight through late
wednesday night...

.rest of today...north winds 5 to 15 knots becoming northeast
10 to 20 knots by late morning, then veering east by mid
afternoon. patchy fog late in the morning. waves calm to 2 feet
building to 2 to 4 feet. 
.tonight...east winds 20 to 30 knots increasing to gales to
40 knots by midnight. a chance of snow. freezing spray after
midnight. waves building to 12 to 17 feet occasionally to
21 feet. 
.wednesday...east gales to 45 knots with a few storm force gusts
to 50 knots possible diminishing to gales to 45 knots. freezing
spray. snow. a slight chance of freezing rain in the afternoon.
waves building to 15 to 20 feet occasionally to 25 feet. 
.wednesday night...east gales to 40 knots. freezing spray. a
chance of snow showers. waves subsiding to 10 to 14 feet
occasionally to 18 feet. 
.thursday...east gales to 35 knots. freezing spray in the
morning. a chance of snow showers. waves subsiding to 7 to
10 feet occasionally to 13 feet. 
.thursday night...east winds 20 to 30 knots increasing to gales
to 35 knots after midnight. a chance of snow showers. freezing
spray after midnight. waves building to 8 to 11 feet occasionally
to 14 feet. 
.friday...northeast gales to 35 knots diminishing to 15 to
25 knots. freezing spray. a chance of snow. waves subsiding to
3 to 6 feet occasionally to 8 feet. 
.saturday...north winds 10 to 20 knots increasing to 15 to
25 knots. waves subsiding to 2 to 4 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 171501
glfls 
expires:202602172100;;787962

open lake forecast for lake superior
national weather service marquette mi
1000 am est tue feb 17 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...

high pressure of 30.1 inches remains over lake superior this morning 
through the afternoon as a 30.4 inch ridge crosses northern ontario 
today. pressure will gradually fall through tonight to 29.6 inches 
over the lake by wednesday morning as a 29.1 inch low moves from the 
rockies to the northern plains. 29.8 inch troughing then persists 
over the lake through thursday, deepening back to 29.5 inches by 
friday morning as a 29.3 inch low approaches upper michigan from the 
south.



lsz265-172100-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
1000 am est tue feb 17 2026

...gale warning in effect from late tonight through late
wednesday night...

.rest of today...north winds 5 to 15 knots veering northeast by
late morning, then becoming east 10 to 20 knots by mid afternoon.
patchy dense fog. waves calm to 2 feet. 
.tonight...east winds 20 to 30 knots increasing to gales to
40 knots by midnight. patchy fog in the evening. a slight chance
of snow in the evening, then snow after midnight. waves building
to 11 to 15 feet occasionally to 19 feet. 
.wednesday...east gales to 45 knots. snow. a slight chance of
freezing rain in the afternoon. waves building to 15 to 20 feet
occasionally to 25 feet, then subsiding to 12 to 17 feet
occasionally to 21 feet. 
.wednesday night...east gales to 40 knots. a chance of snow
showers. waves subsiding to 8 to 11 feet occasionally to 14 feet.
.thursday...east gales to 35 knots diminishing to 20 to 30 knots
in the afternoon. a chance of snow showers. waves subsiding to
5 to 8 feet occasionally to 10 feet. 
.thursday night...east winds 20 to 30 knots increasing to gales
to 35 knots after midnight. a chance of snow showers. waves
building to 7 to 10 feet occasionally to 13 feet. 
.friday...east gales to 35 knots becoming north 20 to 30 knots.
snow likely, then a chance of snow showers. waves subsiding to
3 to 6 feet occasionally to 8 feet. 
.saturday...northwest winds 20 to 30 knots. waves subsiding to
2 to 4 feet, then building to 3 to 5 feet occasionally to 7 feet.

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 171501
glfls 
expires:202602172100;;787963

open lake forecast for lake superior
national weather service marquette mi
1000 am est tue feb 17 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...

high pressure of 30.1 inches remains over lake superior this morning 
through the afternoon as a 30.4 inch ridge crosses northern ontario 
today. pressure will gradually fall through tonight to 29.6 inches 
over the lake by wednesday morning as a 29.1 inch low moves from the 
rockies to the northern plains. 29.8 inch troughing then persists 
over the lake through thursday, deepening back to 29.5 inches by 
friday morning as a 29.3 inch low approaches upper michigan from the 
south.



lsz266-172100-
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 est tue feb 17 2026

...gale warning in effect from late tonight through late
wednesday night...

.rest of today...north winds 5 to 15 knots veering northeast by
late morning, then becoming east 10 to 20 knots by mid afternoon.
patchy dense fog. waves calm to 2 feet. 
.tonight...east winds 20 to 30 knots increasing to gales to
40 knots by midnight. a chance of snow. freezing spray after
midnight. waves building to 11 to 15 feet occasionally to
19 feet. 
.wednesday...east gales to 45 knots with a few storm force gusts
to 50 knots possible diminishing to gales to 45 knots. freezing
spray. a slight chance of sleet in the morning. snow. a slight
chance of freezing rain in the afternoon. waves building to 15 to
20 feet occasionally to 25 feet, then subsiding to 12 to 17 feet
occasionally to 21 feet. 
.wednesday night...east gales to 40 knots. a chance of snow
showers. freezing spray after midnight. waves subsiding to 10 to
14 feet occasionally to 18 feet. 
.thursday...east gales to 40 knots. freezing spray in the
morning. a chance of snow showers. waves subsiding to 6 to 9 feet
occasionally to 11 feet. 
.thursday night...east gales to 40 knots. a chance of snow
showers. waves building to 7 to 10 feet occasionally to 13 feet. 
.friday...east gales to 40 knots becoming northeast 20 to
30 knots. a chance of snow. waves building to 8 to 11 feet
occasionally to 14 feet, then subsiding to 3 to 6 feet
occasionally to 8 feet. 
.saturday...northwest winds 20 to 30 knots. waves subsiding to
3 to 6 feet occasionally to 8 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 171501
glfls 
expires:202602172100;;787964

open lake forecast for lake superior
national weather service marquette mi
1000 am est tue feb 17 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...

high pressure of 30.1 inches remains over lake superior this morning 
through the afternoon as a 30.4 inch ridge crosses northern ontario 
today. pressure will gradually fall through tonight to 29.6 inches 
over the lake by wednesday morning as a 29.1 inch low moves from the 
rockies to the northern plains. 29.8 inch troughing then persists 
over the lake through thursday, deepening back to 29.5 inches by 
friday morning as a 29.3 inch low approaches upper michigan from the 
south.



lsz267-172100-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
1000 am est tue feb 17 2026

...gale warning in effect from wednesday morning through
wednesday evening...

.rest of today...west winds 5 to 15 knots veering north by late
morning, then veering east by mid afternoon. patchy dense
freezing fog late in the morning. patchy dense fog. waves calm to
2 feet. 
.tonight...east winds 15 to 25 knots increasing to gales to
35 knots. a chance of snow after midnight. waves building to 6 to
9 feet occasionally to 11 feet. 
.wednesday...east gales to 40 knots. freezing spray in the
morning. a slight chance of sleet in the morning. snow. a slight
chance of freezing rain in the afternoon. waves building to 7 to
11 feet occasionally to 14 feet. 
.wednesday night...east gales to 35 knots. a chance of snow
showers in the evening. freezing spray after midnight. waves
subsiding to 4 to 7 feet occasionally to 9 feet. 
.thursday...east gales to 35 knots becoming southeast 20 to
30 knots in the afternoon. a slight chance of snow showers in the
morning. waves subsiding to 3 to 6 feet occasionally to 8 feet. 
.thursday night...east gales to 35 knots. waves building to 4 to
7 feet occasionally to 9 feet. 
.friday...east gales to 35 knots diminishing to 15 to 25 knots.
snow likely, then a chance of snow showers. waves subsiding to
2 to 4 feet. 
.saturday...north winds 15 to 25 knots diminishing to 10 to
20 knots. waves building to 3 to 5 feet occasionally to 7 feet. 

note, wave height forecasts are for ice free areas.

$$