fzus61 kbuf 150804
glflo 
expires:202603151500;;704261

open lake forecast for lake ontario
national weather service buffalo ny
404 am edt sun mar 15 2026

for waters beyond five nautical miles of shore on lake ontario

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

.synopsis...a 29.5 inch surface low over the mid-mississippi valley 
will track northeastward and deepen to 28.9 inches just to the west 
of the lake monday morning, before pushing northeastward across 
quebec through tuesday. this low will sweep a strong cold front 
across the lake monday afternoon, with a 30.4 inch high building 
across the great lakes and ohio valley tuesday. the high will then 
shift east of the lake wednesday and reach the east coast by 
wednesday evening. a 30.2 inch high will move into the great lakes 
region thursday.


loz062-151500-
lake ontario open waters from the niagara river to hamlin beach-
404 am edt sun mar 15 2026

...gale watch in effect from monday afternoon through tuesday
morning...

.today...east winds 15 to 20 knots increasing to 30 knots. snow
this morning. waves 2 to 4 feet building to 6 to 9 feet. waves
occasionally around 11 feet. 
.tonight...southeast winds to 30 knots. a chance of showers late.
waves 5 to 8 feet. waves occasionally around 10 feet. 
.monday...southeast winds to 30 knots becoming southwest and
increasing to 35 knot gales in the afternoon. rain showers. waves
4 to 7 feet building to 9 to 12 feet. waves occasionally around
15 feet. 
.monday night...southwest gales to 35 knots becoming west. rain
showers with a chance of snow showers in the evening, then a
chance of snow showers overnight. waves 10 to 15 feet. waves
occasionally around 19 feet. 
.tuesday...west gales to 35 knots diminishing to 15 to 20 knots.
a chance of snow showers. waves 10 to 15 feet subsiding to 4 to
7 feet. waves occasionally around 19 feet. 
.wednesday...southwest winds 10 to 15 knots becoming south 15 to
20 knots. a chance of snow showers wednesday night. waves 1 to
3 feet. 
.thursday...south winds 10 to 15 knots becoming west. a chance of
rain and snow showers during the day, then a chance of rain
showers thursday night. waves 1 to 3 feet. 

$$

fzus61 kbuf 150804
glflo 
expires:202603151500;;704262

open lake forecast for lake ontario
national weather service buffalo ny
404 am edt sun mar 15 2026

for waters beyond five nautical miles of shore on lake ontario

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

.synopsis...a 29.5 inch surface low over the mid-mississippi valley 
will track northeastward and deepen to 28.9 inches just to the west 
of the lake monday morning, before pushing northeastward across 
quebec through tuesday. this low will sweep a strong cold front 
across the lake monday afternoon, with a 30.4 inch high building 
across the great lakes and ohio valley tuesday. the high will then 
shift east of the lake wednesday and reach the east coast by 
wednesday evening. a 30.2 inch high will move into the great lakes 
region thursday.


loz063>065-151500-
lake ontario open waters from hamlin beach to the saint lawrence
river-
404 am edt sun mar 15 2026

...gale watch in effect from monday evening through tuesday
evening...

.today...southeast winds 15 to 25 knots. a chance of snow early,
then snow likely late this morning. waves 1 to 3 feet building to
5 to 8 feet. waves occasionally around 10 feet. 
.tonight...southeast winds to 30 knots increasing to 35 knot
gales. a chance of rain showers late. waves 5 to 8 feet building
to 7 to 11 feet. waves occasionally around 14 feet. 
.monday...southeast gales to 35 knots becoming southwest and
diminishing to 30 knots in the afternoon. rain showers likely in
the morning, then rain showers, snow showers with a chance of
thunderstorms in the afternoon. waves 6 to 10 feet. waves
occasionally around 13 feet. 
.monday night...west winds to 30 knots increasing to 40 knot
gales. snow showers, rain showers with a chance of thunderstorms
in the evening, then lake effect snow showers overnight. waves
9 to 13 feet building to 13 to 17 feet. waves occasionally around
22 feet. 
.tuesday...west gales to 40 knots diminishing to 15 to 25 knots.
lake effect snow showers. waves 13 to 18 feet subsiding to 6 to
9 feet. waves occasionally around 23 feet. 
.wednesday...west winds 10 to 15 knots becoming south 15 to
20 knots. waves 3 to 5 feet. 
.thursday...south winds 15 to 20 knots becoming southwest. a
chance of rain showers. waves 3 to 5 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 150827
glfle 
expires:202603151415;;705704

open lake forecast for lake erie
national weather service cleveland oh
427 am edt sun mar 15 2026

for waters beyond five nautical miles of shore on lake erie

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

.synopsis...
low pressure 29.20 inches over the central plains this morning 
will deepen to 28.90 inches by monday morning as it lifts into the
northern great lakes. this will lift a warm front across lake erie
this morning followed by a strong cold front monday morning. a
trough averaging 29.80 inches will persist across the lake through
early tuesday before a ridge averaging 30.30 inches builds from 
the upper midwest late tuesday and tuesday night. the ridge will
exit slowly eastward from the lake erie region wednesday through 
thursday as another cold front crosses the lake. 


lez162>164-151415-
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-
427 am edt sun mar 15 2026

...gale watch in effect from monday morning through tuesday
morning...

.today...east winds 15 to 25 knots becoming south. waves 3 to
5 feet. 
.tonight...south winds to 30 knots. a slight chance of showers
after midnight. showers late. waves 3 to 6 feet. 
.monday...southwest winds to 30 knots becoming west and
increasing to 35 knot gales in the afternoon. waves 3 to 6 feet
building to 5 to 9 feet. waves occasionally around 11 feet. 
.monday night...west gales to 35 knots diminishing to 30 knots
overnight. a chance of snow showers. waves 5 to 9 feet. waves
occasionally around 11 feet. 
.tuesday...west winds to 30 knots becoming southwest and
diminishing to 10 to 15 knots. waves 4 to 7 feet subsiding to
1 to 3 feet. waves occasionally around 9 feet. 
.wednesday...south winds 15 to 20 knots. a chance of snow showers
during the day. waves 1 to 3 feet. 
.thursday...south winds 5 to 15 knots becoming southwest. waves
2 feet or less. 

$$

fzus61 kcle 150827
glfle 
expires:202603151415;;705705

open lake forecast for lake erie
national weather service cleveland oh
427 am edt sun mar 15 2026

for waters beyond five nautical miles of shore on lake erie

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

.synopsis...
low pressure 29.20 inches over the central plains this morning 
will deepen to 28.90 inches by monday morning as it lifts into the
northern great lakes. this will lift a warm front across lake erie
this morning followed by a strong cold front monday morning. a
trough averaging 29.80 inches will persist across the lake through
early tuesday before a ridge averaging 30.30 inches builds from 
the upper midwest late tuesday and tuesday night. the ridge will
exit slowly eastward from the lake erie region wednesday through 
thursday as another cold front crosses the lake. 


lez165>167-151415-
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-
427 am edt sun mar 15 2026

...gale watch in effect from monday morning through tuesday
morning...

.today...east winds 15 to 25 knots becoming south. a slight
chance of rain showers early. waves 3 to 5 feet. 
.tonight...south winds to 30 knots. showers late. waves 3 to
6 feet building to 4 to 7 feet. waves occasionally around 9 feet.
.monday...south winds to 30 knots becoming southwest and
increasing to 35 knot gales in the afternoon. rain showers likely
in the morning. waves 4 to 7 feet building to 10 to 13 feet.
waves occasionally around 16 feet. 
.monday night...west gales to 35 knots. a chance of snow showers.
waves 9 to 13 feet. waves occasionally around 16 feet. 
.tuesday...west winds to 30 knots becoming southwest and
diminishing to 15 to 20 knots. a chance of snow showers during
the day. waves 8 to 11 feet subsiding to 3 to 5 feet. waves
occasionally around 14 feet. 
.wednesday...south winds 15 to 20 knots. a chance of snow showers
during the day. waves 2 to 4 feet. 
.thursday...south winds 15 to 20 knots diminishing to 5 to
15 knots. waves 2 to 4 feet subsiding to 1 to 3 feet. 

$$

fzus61 kcle 150827
glfle 
expires:202603151415;;705706

open lake forecast for lake erie
national weather service cleveland oh
427 am edt sun mar 15 2026

for waters beyond five nautical miles of shore on lake erie

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

.synopsis...
low pressure 29.20 inches over the central plains this morning 
will deepen to 28.90 inches by monday morning as it lifts into the
northern great lakes. this will lift a warm front across lake erie
this morning followed by a strong cold front monday morning. a
trough averaging 29.80 inches will persist across the lake through
early tuesday before a ridge averaging 30.30 inches builds from 
the upper midwest late tuesday and tuesday night. the ridge will
exit slowly eastward from the lake erie region wednesday through 
thursday as another cold front crosses the lake. 


lez061-168-169-151415-
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-
427 am edt sun mar 15 2026

...gale watch in effect from monday morning through tuesday
morning...

.today...east winds 15 to 25 knots becoming south. a chance of
snow showers with a slight chance of rain showers early. waves
1 to 3 feet building to 3 to 5 feet. 
.tonight...south winds to 30 knots. waves 3 to 6 feet building to
4 to 7 feet. waves occasionally around 9 feet. 
.monday...south winds to 30 knots becoming southwest and
increasing to 35 knot gales in the afternoon. rain showers in the
morning, then rain showers likely with a chance of snow showers
in the afternoon. waves 3 to 6 feet building to 10 to 13 feet.
waves occasionally around 16 feet. 
.monday night...west winds to 30 knots increasing to 35 knot
gales overnight. a chance of snow showers. waves 10 to 13 feet.
waves occasionally around 16 feet. 
.tuesday...west winds to 30 knots becoming southwest and
diminishing to 10 to 15 knots. a chance of snow showers. waves
9 to 12 feet subsiding to 3 to 5 feet. waves occasionally around
15 feet. 
.wednesday...southwest winds 10 to 15 knots becoming south. waves
1 to 3 feet. 
.thursday...south winds 5 to 15 knots becoming southwest. waves
2 feet or less. 

$$

fzus63 kdtx 150801
glfsc 
expires:202603151615;;704046

lake st clair forecast
national weather service detroit/pontiac mi
401 am edt sun mar 15 2026

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

.synopsis...a strong low pressure system, 28.90 inches, moves
across southern michigan and lake huron late tonight into monday.
this brings unsettled weather included gust to gales through the
early week period. gale warnings are in effect for the eastern
great lakes.


lcz460-151615-
lake st clair-
401 am edt sun mar 15 2026

...small craft advisory in effect from 11 am edt this morning
through late tonight...
...gale warning in effect from late tonight through tuesday
afternoon...

.today...east winds 20 to 25 knots with gusts to 35 knot gales
becoming southeast 15 to 20 knots early in the afternoon...then
becoming south 20 to 25 knots with gusts to 30 knots late in the
afternoon. mostly cloudy. waves 2 to 4 feet.
.tonight...south winds 20 to 25 knots increasing to 30 knots after
midnight...then diminishing to 20 to 25 knots early in the morning.
gusts to 35 knot gales. rain early in the morning. waves 3 to 5
feet. waves occasionally around 7 feet.
.monday...southwest winds to 30 knots with gusts to 40 knot gales.
mostly cloudy. a chance of light rain early in the morning. waves 3
to 5 feet. waves occasionally around 7 feet.
.monday night...west winds to 30 knots with gusts to 35 knot gales.
mostly cloudy. waves 2 to 4 feet.
.tuesday...west winds 20 to 25 knots with gusts to 30 knots
diminishing to 10 to 15 knots. mostly cloudy becoming partly cloudy.
waves 2 to 4 feet subsiding to 1 to 3 feet in the afternoon and
evening.
.wednesday...south winds 15 to 20 knots. mostly cloudy with a chance
of light snow. waves 1 to 3 feet.
.thursday...southeast winds 10 to 15 knots. mostly cloudy. waves 2
feet or less.

$$

fzus63 kdtx 150800
glflh 
expires:202603151600;;703988

open lake forecast for lake huron
national weather service detroit/pontiac mi
400 am edt sun mar 15 2026

for waters beyond five nautical miles off shore on lake huron

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

.synopsis...a strong low pressure system, 28.90 inches, moves
across southern michigan and lake huron late tonight into monday.
this brings unsettled weather included gust to gales through the
early week period. gale warnings are in effect for the eastern
great lakes.


lhz363-462>464-151600-
lake huron from sturgeon point to alabaster mi beyond 5nm off
shore-
lake huron from port austin to harbor beach beyond 5nm off shore-
lake huron from harbor beach to port sanilac beyond 5nm off shore-
lake huron from port sanilac to port huron beyond 5nm off shore-
400 am edt sun mar 15 2026

...gale warning in effect from this evening through tuesday
afternoon...

.today...east winds 20 to 25 knots increasing to 30 knots late in
the morning...then decreasing to 20 to 25 knots in the afternoon.
gusts to 40 knot gales decreasing to 30 knots late in the
afternoon. snow in the morning...then a chance of snow in the
afternoon. snow may be heavy at times in the morning. waves 8 to
12 feet. waves occasionally around 15 feet. 
.tonight...southeast winds 20 to 25 knots becoming south to
30 knots by midnight...then decreasing to 20 to 25 knots early in
the morning. gusts to 40 knot gales. a chance of rain. waves
10 to 14 feet. waves occasionally around 18 feet. 
.monday...south winds 20 to 25 knots becoming southwest to
30 knots in the late morning and afternoon. gusts to 40 knot
gales. a chance of rain in the morning. waves 10 to 14 feet.
waves occasionally around 18 feet. 
.monday night...southwest winds to 30 knots becoming west at
35 knot gales in the late evening and overnight. gusts to 40 knot
gales. a chance of snow. heavy freezing spray. waves 12 to
16 feet. waves occasionally around 20 feet. a gale warning may be
needed. 
.tuesday...west winds to 30 knots with gusts to 35 knot gales
decreasing to 10 to 15 knots. heavy freezing spray. waves 12 to
16 feet subsiding to 3 to 5 feet. waves occasionally around
20 feet. 
.wednesday...southwest winds 15 to 20 knots becoming south 20 to
25 knots with gusts to around 30 knots in the late morning and
early afternoon...then decreasing to 15 to 20 knots . waves 4 to
6 feet. 
.thursday...south winds 10 to 15 knots decreasing to 5 to
10 knots early in the evening...then becoming south 5 to 10 knots
by midnight. waves 3 to 5 feet subsiding to 1 to 3 feet early in
the evening...then building to 2 to 4 feet by midnight. waves
occasionally around 8 feet. 


$$

fzus63 kdtx 150800
glflh 
expires:202603151600;;703987

open lake forecast for lake huron
national weather service detroit/pontiac mi
400 am edt sun mar 15 2026

for waters beyond five nautical miles off shore on lake huron

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

.synopsis...a strong low pressure system, 28.90 inches, moves
across southern michigan and lake huron late tonight into monday.
this brings unsettled weather included gust to gales through the
early week period. gale warnings are in effect for the eastern
great lakes.


lhz361-362-151600-
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-
400 am edt sun mar 15 2026

...gale warning in effect from 8 am edt this morning through
tuesday afternoon...

.today...east winds 20 to 25 knots increasing to 35 knot gales
with gusts to 45 knot gales. snow in the morning...then snow and
a chance of rain in the afternoon. snow may be heavy at times.
waves 5 to 7 feet building to 12 to 16 feet. waves occasionally
around 20 feet. 
.tonight...northeast winds to 30 knots with gusts to 45 knot
gales decreasing to 20 to 25 knots with gusts to 35 knot gales
early in the morning. rain...sleet and freezing rain in the
evening...then rain and freezing rain after midnight.
precipitation may be heavy at times. waves 12 to 16 feet. waves
occasionally around 20 feet. 
.monday...south winds 20 to 25 knots increasing to 30 knots in
the late morning and afternoon. gusts to 40 knot gales. a chance
of rain in the morning...then a chance of snow in the afternoon.
freezing spray in the afternoon. waves 10 to 14 feet. waves
occasionally around 18 feet. 
.monday night...west at 35 knot gales veering to the northwest in
the late evening and overnight. gusts to 40 knot gales. a chance
of snow. heavy freezing spray. waves 12 to 16 feet. waves
occasionally around 19 feet. a gale warning may be needed. 
.tuesday...northwest winds to 30 knots with gusts to 35 knot
gales decreasing to 20 to 25 knots with gusts to around 30 knots
late in the morning...then becoming west 15 to 20 knots late in
the afternoon decreasing to 10 to 15 knots late in the evening.
heavy freezing spray. waves 12 to 16 feet subsiding to 4 to
6 feet. waves occasionally around 20 feet. 
.wednesday...south winds 15 to 20 knots increasing to 20 to
25 knots with gusts to around 30 knots in the late morning and
early afternoon...then decreasing to 15 to 20 knots . a chance of
snow. freezing spray in the late morning and early afternoon.
waves 3 to 5 feet building to 6 to 9 feet. waves occasionally
around 12 feet. 
.thursday...southwest winds 10 to 15 knots veering to the west by
midnight. waves 3 to 5 feet. 


$$

fzus63 kmqt 150801
glfls 
expires:202603152000;;704013

open lake forecast for lake superior
national weather service marquette mi
400 am edt sun mar 15 2026

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

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

.synopsis...

throughout today, a 29.3 inch low deepens to 29.1 inches as it moves 
from over eastern kansas to over the michigan lower peninsula. the 
low then slowly shifts over northern lake huron by monday afternoon, 
maintaining near 29.1 inches. by monday night, lake superior will be 
between the low as it shifts into quebec and a 30.3 inch high over 
the northern plains. this low shifts south of the great lakes basin 
through tuesday, extending weak 30.0 inch ridging over lake 
superior. wednesday morning, 29.5 inch low pressure over the 
canadian prairie will begin to push towards the lake, weakening to 
29.8 inches over the western end of the lake wednesday night. weak 
ridging of around 30.1 inches will be over the lake thursday evening 
ahead of the next clipper low moving over northern ontario by friday 
afternoon at around 29.6 inches.



lsz263-152000-
lake superior from saxon harbor wi to upper entrance to portage
canal mi 5nm off shore to the us/canadian border including isle
royale national park-
400 am edt sun mar 15 2026

...gale warning in effect from 8 am edt this morning through this
evening...
...heavy freezing spray warning in effect from 2 pm edt this
afternoon through tuesday afternoon...
...storm warning in effect from this evening through monday
afternoon...

.early this morning...east winds 15 to 25 knots. a slight chance
of snow. waves 1 to 3 feet building to 3 to 5 feet occasionally
to 7 feet. 
.today...northeast gales to 45 knots. freezing spray. snow. waves
building to 15 to 20 feet occasionally to 25 feet. 
.tonight...northeast gales to 45 knots becoming north storm force
winds to 55 knots after midnight. heavy freezing spray. a chance
of snow. waves building to 20 to 25 feet occasionally to 31 feet.
.monday...north storm force winds to 55 knots diminishing to
gales to 45 knots in the afternoon. heavy freezing spray. a
chance of snow. waves subsiding to 12 to 17 feet occasionally to
21 feet. 
.monday night...north gales to 45 knots. heavy freezing spray.
waves subsiding to 5 to 8 feet occasionally to 10 feet. 
.tuesday...northwest winds 15 to 25 knots becoming southwest 5 to
15 knots by mid afternoon. waves subsiding to calm to 2 feet. 
.tuesday night...south winds 15 to 25 knots. a chance of snow
showers. waves building to 3 to 5 feet occasionally to 7 feet. 
.wednesday...southwest winds 10 to 20 knots diminishing to 5 to
15 knots. a chance of snow showers. waves subsiding to calm to
2 feet, then building to 2 to 4 feet. 
.thursday...southwest winds 5 to 15 knots becoming south 15 to
25 knots. waves subsiding to calm to 2 feet, then building to
3 to 6 feet occasionally to 8 feet. 

$$

fzus63 kmqt 150801
glfls 
expires:202603152000;;704015

open lake forecast for lake superior
national weather service marquette mi
400 am edt sun mar 15 2026

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

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

.synopsis...

throughout today, a 29.3 inch low deepens to 29.1 inches as it moves 
from over eastern kansas to over the michigan lower peninsula. the 
low then slowly shifts over northern lake huron by monday afternoon, 
maintaining near 29.1 inches. by monday night, lake superior will be 
between the low as it shifts into quebec and a 30.3 inch high over 
the northern plains. this low shifts south of the great lakes basin 
through tuesday, extending weak 30.0 inch ridging over lake 
superior. wednesday morning, 29.5 inch low pressure over the 
canadian prairie will begin to push towards the lake, weakening to 
29.8 inches over the western end of the lake wednesday night. weak 
ridging of around 30.1 inches will be over the lake thursday evening 
ahead of the next clipper low moving over northern ontario by friday 
afternoon at around 29.6 inches.



lsz265-152000-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
400 am edt sun mar 15 2026

...gale warning in effect from 11 am edt this morning through
this evening...
...heavy freezing spray warning in effect from 2 pm edt this
afternoon through tuesday afternoon...
...storm warning in effect from this evening through late monday
night...

.early this morning...southeast winds 10 to 20 knots. a chance of
snow. waves calm to 2 feet building to 2 to 4 feet. 
.today...east winds 20 to 30 knots increasing to gales to
45 knots in the afternoon, then becoming northeast storm force
winds to 50 knots late. freezing spray. snow. waves building to
15 to 20 feet occasionally to 25 feet. 
.tonight...northeast storm force winds to 60 knots backing north
late. heavy freezing spray. snow. waves building to 25 to 30 feet
occasionally to 38 feet. 
.monday...north storm force winds to 60 knots. heavy freezing
spray. snow through early afternoon. snow likely by mid
afternoon. waves building to over 30 feet, then subsiding to
22 to 27 feet occasionally to 34 feet. 
.monday night...north gales to 45 knots. a chance of snow through
midnight. heavy freezing spray. waves subsiding to 10 to 14 feet
occasionally to 18 feet. 
.tuesday...northwest winds 20 to 30 knots becoming west 10 to
20 knots by mid afternoon. heavy freezing spray through early
afternoon. waves subsiding to 1 to 3 feet. 
.tuesday night...south winds 10 to 20 knots increasing to 20 to
30 knots after midnight. waves subsiding to calm to 2 feet, then
building to 2 to 4 feet. 
.wednesday...southwest winds 15 to 25 knots diminishing to 10 to
20 knots. a chance of snow showers. a chance of rain showers.
waves subsiding to calm to 2 feet, then building to 1 to 3 feet. 
.thursday...northwest winds 10 to 20 knots becoming south 15 to
25 knots. a chance of rain and snow showers. waves subsiding to
calm to 2 feet, then building to 3 to 6 feet occasionally to
8 feet. 

$$

fzus63 kmqt 150801
glfls 
expires:202603152000;;704017

open lake forecast for lake superior
national weather service marquette mi
400 am edt sun mar 15 2026

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

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

.synopsis...

throughout today, a 29.3 inch low deepens to 29.1 inches as it moves 
from over eastern kansas to over the michigan lower peninsula. the 
low then slowly shifts over northern lake huron by monday afternoon, 
maintaining near 29.1 inches. by monday night, lake superior will be 
between the low as it shifts into quebec and a 30.3 inch high over 
the northern plains. this low shifts south of the great lakes basin 
through tuesday, extending weak 30.0 inch ridging over lake 
superior. wednesday morning, 29.5 inch low pressure over the 
canadian prairie will begin to push towards the lake, weakening to 
29.8 inches over the western end of the lake wednesday night. weak 
ridging of around 30.1 inches will be over the lake thursday evening 
ahead of the next clipper low moving over northern ontario by friday 
afternoon at around 29.6 inches.



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

...gale warning in effect from 11 am edt this morning through
this evening...
...storm warning in effect from this evening through late monday
night...
...heavy freezing spray warning in effect from this evening
through tuesday afternoon...

.early this morning...southeast winds 15 to 25 knots. a slight
chance of snow. waves 1 to 3 feet building to 2 to 4 feet. 
.today...east winds 20 to 30 knots increasing to gales to
40 knots in the afternoon, then becoming northeast gales to
45 knots late. freezing spray. snow. waves building to 10 to
14 feet occasionally to 18 feet. 
.tonight...northeast storm force winds to 60 knots. heavy
freezing spray. snow. a slight chance of sleet after midnight.
waves building to 17 to 22 feet occasionally to 28 feet. 
.monday...north storm force winds to 60 knots. heavy freezing
spray. a slight chance of sleet through early afternoon. snow.
waves building to 20 to 25 feet occasionally to 31 feet. 
.monday night...north gales to 45 knots. heavy freezing spray. a
chance of snow. waves subsiding to 11 to 15 feet occasionally to
19 feet. 
.tuesday...north gales to 35 knots becoming northwest 10 to
20 knots by mid afternoon. heavy freezing spray. waves subsiding
to 3 to 5 feet occasionally to 7 feet. 
.tuesday night...southwest winds 10 to 20 knots becoming south
15 to 25 knots after midnight. a chance of snow showers after
midnight. waves subsiding to 2 to 4 feet, then building to 3 to
6 feet occasionally to 8 feet. 
.wednesday...south winds 20 to 30 knots becoming southwest 10 to
20 knots. freezing spray. a chance of snow showers. waves
subsiding to 2 to 4 feet, then building to 3 to 6 feet
occasionally to 8 feet. 
.thursday...northwest winds 10 to 20 knots becoming south 15 to
25 knots. a chance of rain and snow showers. waves subsiding to
2 to 4 feet, then building to 5 to 8 feet occasionally to
10 feet. 

$$

fzus63 kmqt 150801
glfls 
expires:202603152000;;704016

open lake forecast for lake superior
national weather service marquette mi
400 am edt sun mar 15 2026

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

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

.synopsis...

throughout today, a 29.3 inch low deepens to 29.1 inches as it moves 
from over eastern kansas to over the michigan lower peninsula. the 
low then slowly shifts over northern lake huron by monday afternoon, 
maintaining near 29.1 inches. by monday night, lake superior will be 
between the low as it shifts into quebec and a 30.3 inch high over 
the northern plains. this low shifts south of the great lakes basin 
through tuesday, extending weak 30.0 inch ridging over lake 
superior. wednesday morning, 29.5 inch low pressure over the 
canadian prairie will begin to push towards the lake, weakening to 
29.8 inches over the western end of the lake wednesday night. weak 
ridging of around 30.1 inches will be over the lake thursday evening 
ahead of the next clipper low moving over northern ontario by friday 
afternoon at around 29.6 inches.



lsz266-152000-
lake superior east of a line from manitou island to marquette mi
and west of a line from grand marais mi to the us/canadian border
beyond 5nm from shore-
400 am edt sun mar 15 2026

...gale warning in effect from 11 am edt this morning through
this evening...
...storm warning in effect from this evening through late monday
night...
...heavy freezing spray warning in effect from this evening
through tuesday afternoon...

.early this morning...southeast winds 10 to 20 knots. a chance of
snow. waves 1 to 3 feet building to 2 to 4 feet. 
.today...east winds 20 to 30 knots increasing to gales to
40 knots in the afternoon, then becoming northeast gales to
45 knots late. freezing spray. snow. waves building to 15 to
20 feet occasionally to 25 feet. 
.tonight...northeast storm force winds to 60 knots. heavy
freezing spray. snow. a slight chance of sleet after midnight.
waves building to 25 to 30 feet occasionally to 38 feet. 
.monday...north storm force winds to 60 knots with a few
hurricane force gusts to 65 knots possible diminishing to storm
force winds to 60 knots in the afternoon. heavy freezing spray.
snow. waves building to over 30 feet, then subsiding to 25 to
30 feet occasionally to 38 feet. 
.monday night...north storm force winds to 55 knots diminishing
to gales to 40 knots after midnight. heavy freezing spray. a
chance of snow. waves subsiding to 12 to 17 feet occasionally to
21 feet. 
.tuesday...north gales to 35 knots becoming northwest 10 to
20 knots by mid afternoon. heavy freezing spray. waves subsiding
to 3 to 5 feet occasionally to 7 feet. 
.tuesday night...south winds 15 to 25 knots increasing to 20 to
30 knots after midnight. freezing spray after midnight. a chance
of snow showers after midnight. waves subsiding to 1 to 3 feet,
then building to 4 to 7 feet occasionally to 9 feet. 
.wednesday...south winds 20 to 30 knots becoming southwest 10 to
20 knots. freezing spray. a chance of snow showers. a chance of
rain showers. waves subsiding to 2 to 4 feet, then building to
3 to 6 feet occasionally to 8 feet. 
.thursday...northwest winds 10 to 20 knots becoming south 15 to
25 knots. waves subsiding to 2 to 4 feet, then building to 5 to
8 feet occasionally to 10 feet. 

$$

fzus63 kmqt 150801
glfls 
expires:202603152000;;704012

open lake forecast for lake superior
national weather service marquette mi
400 am edt sun mar 15 2026

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

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

.synopsis...

throughout today, a 29.3 inch low deepens to 29.1 inches as it moves 
from over eastern kansas to over the michigan lower peninsula. the 
low then slowly shifts over northern lake huron by monday afternoon, 
maintaining near 29.1 inches. by monday night, lake superior will be 
between the low as it shifts into quebec and a 30.3 inch high over 
the northern plains. this low shifts south of the great lakes basin 
through tuesday, extending weak 30.0 inch ridging over lake 
superior. wednesday morning, 29.5 inch low pressure over the 
canadian prairie will begin to push towards the lake, weakening to 
29.8 inches over the western end of the lake wednesday night. weak 
ridging of around 30.1 inches will be over the lake thursday evening 
ahead of the next clipper low moving over northern ontario by friday 
afternoon at around 29.6 inches.



lsz162-152000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
400 am edt sun mar 15 2026 /300 am cdt sun mar 15 2026/

...gale warning in effect from 8 am edt /7 am cdt/ this morning
through this evening...
...heavy freezing spray warning in effect from 8 am edt /7 am
cdt/ this morning through late monday night...
...storm warning in effect from this evening through monday
morning...

.early this morning...northeast winds 20 to 30 knots. a chance of
snow. waves 3 to 5 feet occasionally to 7 feet building to 5 to
8 feet occasionally to 10 feet. 
.today...northeast gales to 45 knots. freezing spray. snow. waves
building to 15 to 20 feet occasionally to 25 feet. 
.tonight...north gales to 45 knots increasing to storm force
winds to 50 knots late. heavy freezing spray. a chance of snow.
waves 15 to 20 feet occasionally to 25 feet. 
.monday...north storm force winds to 50 knots diminishing to
gales to 45 knots in the afternoon. heavy freezing spray. a
slight chance of snow. waves subsiding to 7 to 10 feet
occasionally to 13 feet. 
.monday night...north gales to 35 knots diminishing to 15 to
25 knots after midnight. heavy freezing spray through midnight.
waves subsiding to 2 to 4 feet. 
.tuesday...northwest winds 5 to 15 knots becoming southwest 10 to
20 knots by mid afternoon. waves subsiding to calm to 2 feet. 
.tuesday night...south winds 15 to 25 knots veering southwest
after midnight. snow showers likely through midnight, then a
chance of snow showers after midnight. waves building to 2 to
4 feet. 
.wednesday...southwest winds 10 to 20 knots veering west. a
chance of rain and snow showers. waves subsiding to calm to
2 feet. 
.thursday...south winds 5 to 15 knots veering southwest. a chance
of rain and snow showers. waves building to 1 to 3 feet. 

$$

fzus63 kmqt 150801
glfls 
expires:202603152000;;704014

open lake forecast for lake superior
national weather service marquette mi
400 am edt sun mar 15 2026

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

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

.synopsis...

throughout today, a 29.3 inch low deepens to 29.1 inches as it moves 
from over eastern kansas to over the michigan lower peninsula. the 
low then slowly shifts over northern lake huron by monday afternoon, 
maintaining near 29.1 inches. by monday night, lake superior will be 
between the low as it shifts into quebec and a 30.3 inch high over 
the northern plains. this low shifts south of the great lakes basin 
through tuesday, extending weak 30.0 inch ridging over lake 
superior. wednesday morning, 29.5 inch low pressure over the 
canadian prairie will begin to push towards the lake, weakening to 
29.8 inches over the western end of the lake wednesday night. weak 
ridging of around 30.1 inches will be over the lake thursday evening 
ahead of the next clipper low moving over northern ontario by friday 
afternoon at around 29.6 inches.



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

...gale warning in effect from 11 am edt this morning through
this evening...
...heavy freezing spray warning in effect from 2 pm edt this
afternoon through tuesday afternoon...
...storm warning in effect from this evening through late monday
night...

.early this morning...east winds 10 to 20 knots. waves calm to
2 feet building to 1 to 3 feet. 
.today...east winds 15 to 25 knots increasing to gales to
35 knots in the afternoon, then becoming northeast gales to
45 knots late. freezing spray. a chance of snow through early
afternoon. snow likely by mid afternoon. waves building to 12 to
17 feet occasionally to 21 feet. 
.tonight...northeast storm force winds to 60 knots backing north
late. heavy freezing spray. a chance of snow through midnight.
snow likely after midnight. waves building to 22 to 27 feet
occasionally to 34 feet. 
.monday...north storm force winds to 60 knots. heavy freezing
spray. snow likely through early afternoon. a chance of snow by
mid afternoon. waves subsiding to 17 to 22 feet occasionally to
28 feet. 
.monday night...north gales to 45 knots. heavy freezing spray.
waves subsiding to 8 to 11 feet occasionally to 14 feet. 
.tuesday...northwest winds 20 to 30 knots becoming west 5 to
15 knots by mid afternoon. heavy freezing spray through early
afternoon. waves subsiding to calm to 2 feet. 
.tuesday night...south winds 10 to 20 knots increasing to 15 to
25 knots after midnight. waves building to 3 to 5 feet
occasionally to 7 feet. 
.wednesday...southwest winds 10 to 20 knots. a chance of snow
showers. waves subsiding to 1 to 3 feet, then building to 2 to
4 feet. 
.thursday...northwest winds 10 to 20 knots becoming south 15 to
25 knots. waves subsiding to 1 to 3 feet, then building to 3 to
6 feet occasionally to 8 feet. 

$$