fzus61 kbuf 190209
glflo 
expires:202603190900;;928871

open lake forecast for lake ontario
national weather service buffalo ny
1009 pm edt wed mar 18 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 30.4 inch high ridged from the lower ohio valley 
to the lake will slide east to the east coast by this evening. 
following the passage of a weak warm front, a 30.2 inch high will 
build across the great lakes region thursday and thursday evening. a 
29.8 inch low will settle from the upper great lakes to the lower 
lakes friday, with another 29.6 inch low then moving from near james 
bay to the canadian maritimes between saturday and sunday and 
pushing a cold front across the lake. a 30.4 inch high is then 
forecast to build across the great lakes on monday.


loz063>065-190900-
lake ontario open waters from hamlin beach to the saint lawrence
river-
1009 pm edt wed mar 18 2026

.rest of tonight...south winds 15 to 20 knots. scattered flurries
after midnight. waves 1 to 3 feet building to 2 to 4 feet. 
.thursday...south winds 15 to 20 knots becoming southwest 10 to
15 knots. a chance of snow showers in the morning, then a chance
of rain and snow showers early in the afternoon. waves 3 to
5 feet subsiding to 1 to 3 feet. 
.thursday night...west winds 10 knots or less. waves 2 feet or
less. 
.friday...south winds 10 knots or less becoming southeast. a
chance of rain and snow showers in the morning, then rain showers
likely in the afternoon. waves 1 foot or less. 
.friday night...east winds 10 to 15 knots becoming northwest.
rain showers likely in the evening, then a chance of rain showers
overnight. waves 2 feet or less. 
.saturday...west winds 10 to 15 knots becoming southwest 15 to
20 knots. a chance of rain showers during the day, then a chance
of rain and snow showers saturday night. waves 1 to 3 feet
building to 3 to 5 feet. 
.sunday...northwest winds 15 to 25 knots becoming north to
30 knots. a chance of rain and snow showers. waves 3 to 6 feet
building to 5 to 8 feet. waves occasionally around 10 feet. 
.monday...north winds 15 to 25 knots becoming northeast. waves
5 to 8 feet subsiding to 1 to 3 feet. waves occasionally around
10 feet. 

$$

fzus61 kbuf 190209
glflo 
expires:202603190900;;928870

open lake forecast for lake ontario
national weather service buffalo ny
1009 pm edt wed mar 18 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 30.4 inch high ridged from the lower ohio valley 
to the lake will slide east to the east coast by this evening. 
following the passage of a weak warm front, a 30.2 inch high will 
build across the great lakes region thursday and thursday evening. a 
29.8 inch low will settle from the upper great lakes to the lower 
lakes friday, with another 29.6 inch low then moving from near james 
bay to the canadian maritimes between saturday and sunday and 
pushing a cold front across the lake. a 30.4 inch high is then 
forecast to build across the great lakes on monday.


loz062-190900-
lake ontario open waters from the niagara river to hamlin beach-
1009 pm edt wed mar 18 2026

.rest of tonight...south winds 10 to 15 knots. scattered flurries
late this evening, then scattered snow showers after midnight.
waves 1 to 2 feet. 
.thursday...south winds 10 to 15 knots becoming west. a chance of
snow showers in the morning. waves 1 to 2 feet. 
.thursday night...west winds 10 knots or less becoming southwest.
waves 1 foot or less. 
.friday...south winds 5 to 10 knots becoming southeast. a chance
of rain and snow showers in the morning, then rain showers likely
in the afternoon. waves 2 feet or less. 
.friday night...east winds around 10 knots becoming northwest.
rain showers likely in the evening, then a chance of rain showers
overnight. waves 1 to 2 feet. 
.saturday...west winds 10 to 15 knots becoming southwest 15 to
20 knots. a chance of rain and snow showers saturday night. waves
1 to 2 feet building to 2 to 4 feet. 
.sunday...northwest winds 15 to 25 knots becoming north. a chance
of rain and snow showers. waves 3 to 6 feet building to 4 to
7 feet. waves occasionally around 9 feet. 
.monday...north winds 15 to 25 knots becoming east and
diminishing to 10 to 15 knots. waves 3 to 6 feet subsiding to
1 to 3 feet. 

$$

fzus61 kcle 190131
glfle 
expires:202603190815;;927934

open lake forecast for lake erie
national weather service cleveland oh
931 pm edt wed mar 18 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...
high pressure 30.40 inches will shift east of lake erie tonight,
allowing a weak warm front to move across the lake on thursday.
another warm front will cross the lake on friday, followed by a
weak cold front on sunday. high pressure 30.40 inches will build
southeast across lake erie early next week.


lez061-168-169-190815-
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-
931 pm edt wed mar 18 2026

.overnight...south winds 10 to 15 knots. a slight chance of
snow showers. waves 1 to 3 feet. 
.thursday...south winds 5 to 15 knots becoming west. waves 1 to
2 feet. 
.thursday night...west winds 10 knots or less becoming south.
waves 1 foot or less. 
.friday...south winds 10 to 15 knots becoming southwest 15 to
20 knots. a chance of rain showers in the morning, then rain
showers likely in the afternoon. waves 1 foot or less. 
.friday night...west winds 5 to 15 knots. a chance of rain
showers. waves 1 to 2 feet. 
.saturday...west winds 5 to 15 knots becoming southwest. waves
1 to 2 feet. 
.sunday...west winds 10 to 15 knots becoming northeast 15 to
20 knots. a chance of rain and snow during the day. waves 2 to
4 feet. 
.monday...north winds 15 to 20 knots becoming east 5 to 15 knots.
waves 2 to 4 feet subsiding to 1 foot or less. 

$$

fzus61 kcle 190131
glfle 
expires:202603190815;;927932

open lake forecast for lake erie
national weather service cleveland oh
931 pm edt wed mar 18 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...
high pressure 30.40 inches will shift east of lake erie tonight,
allowing a weak warm front to move across the lake on thursday.
another warm front will cross the lake on friday, followed by a
weak cold front on sunday. high pressure 30.40 inches will build
southeast across lake erie early next week.


lez162>164-190815-
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-
931 pm edt wed mar 18 2026

.overnight...south winds 10 to 15 knots becoming southwest.
waves 1 to 2 feet. 
.thursday...southwest winds 10 knots or less becoming west. a
chance of rain showers with a slight chance of snow showers
early, then a chance of rain showers late in the morning. a
slight chance of rain showers early in the afternoon. waves
2 feet or less. 
.thursday night...northwest winds 10 knots or less becoming
south. waves 1 foot or less. 
.friday...south winds 10 to 15 knots becoming southwest. a chance
of rain showers in the afternoon. waves 1 foot or less. 
.friday night...west winds 5 to 10 knots becoming northwest. a
chance of rain showers in the evening. waves 1 to 2 feet. 
.saturday...northwest winds 5 to 15 knots becoming southwest
15 to 20 knots. waves 2 feet or less. 
.sunday...west winds 15 to 25 knots becoming north. a chance of
rain during the day. waves 1 to 3 feet building to 3 to 6 feet. 
.monday...north winds 15 to 25 knots becoming northeast and
diminishing to 10 to 15 knots. waves 3 to 6 feet subsiding to
1 to 3 feet. 

$$

fzus61 kcle 190131
glfle 
expires:202603190815;;927933

open lake forecast for lake erie
national weather service cleveland oh
931 pm edt wed mar 18 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...
high pressure 30.40 inches will shift east of lake erie tonight,
allowing a weak warm front to move across the lake on thursday.
another warm front will cross the lake on friday, followed by a
weak cold front on sunday. high pressure 30.40 inches will build
southeast across lake erie early next week.


lez165>167-190815-
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-
931 pm edt wed mar 18 2026

.overnight...south winds 10 to 15 knots. a slight chance of
snow showers. waves 1 to 3 feet. 
.thursday...southwest winds 10 knots or less becoming west. a
slight chance of rain and snow showers through early afternoon.
waves 2 feet or less. 
.thursday night...west winds 10 knots or less becoming south.
waves 1 foot or less. 
.friday...south winds 10 to 15 knots becoming southwest. a chance
of rain showers. waves 2 feet or less. 
.friday night...west winds 10 to 15 knots becoming northwest. a
chance of rain showers in the evening. waves 1 to 2 feet. 
.saturday...northwest winds 5 to 15 knots becoming southwest
15 to 20 knots. waves 1 to 3 feet. 
.sunday...west winds 15 to 25 knots becoming north. a chance of
rain during the day. waves 2 to 4 feet building to 4 to 7 feet.
waves occasionally around 9 feet. 
.monday...north winds 15 to 25 knots becoming east. waves 4 to
7 feet subsiding to 1 to 3 feet. waves occasionally around
9 feet. 

$$

fzus63 kdtx 190111
glfsc 
expires:202603190915;;927644

lake st clair forecast
national weather service detroit/pontiac mi
911 pm edt wed mar 18 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 weakening cold front and diffuse pressure pattern
dominate the great lakes thursday, followed by a compact clipper
that tracks through on friday. weak high pressure this weekend
before a strong cold front sinks across the region with gusty
northeast wind on sunday.


lcz460-190915-
lake st clair-
911 pm edt wed mar 18 2026

.rest of tonight...south winds 10 to 15 knots becoming southwest 5
to 10 knots early in the morning. mostly cloudy. waves 2 feet or
less.
.thursday...west winds 5 to 10 knots early in the morning becoming
light and variable. partly sunny. waves 2 feet or less.
.thursday night...light and variable winds becoming southeast 5 to
10 knots in the late evening and overnight. partly cloudy becoming
mostly cloudy. waves 2 feet or less.
.friday...south winds 5 to 10 knots becoming southwest 10 to 15
knots in the late morning and afternoon. mostly cloudy with a chance
of light rain. waves 2 feet or less.
.friday night...northwest winds 5 to 10 knots. mostly cloudy early
in the evening becoming partly cloudy. a chance of light rain early
in the evening. waves 2 feet or less.
.saturday...northwest winds 5 to 10 knots backing to the southwest
in the afternoon...then becoming south 10 to 15 knots in the
evening. mostly cloudy in the morning becoming partly cloudy. waves
2 feet or less.
.sunday...north winds 15 to 20 knots. mostly cloudy with a chance of
light rain. waves 1 to 3 feet.
.monday...northeast winds 15 to 20 knots. partly cloudy. waves 1 to
3 feet.

$$

fzus63 kdtx 190111
glflh 
expires:202603190915;;927641

open lake forecast for lake huron
national weather service detroit/pontiac mi
911 pm edt wed mar 18 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 weakening cold front and diffuse pressure pattern
dominate the great lakes thursday, followed by a compact clipper
that tracks through on friday. weak high pressure this weekend
before a strong cold front sinks across the region with gusty
northeast wind on sunday.


lhz361-362-190915-
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-
911 pm edt wed mar 18 2026

.rest of tonight...south winds 15 to 20 knots becoming southwest
10 to 15 knots after midnight. waves 5 to 7 feet. waves
occasionally around 10 feet. 
.thursday...west winds 10 to 15 knots decreasing to 5 to 10 knots
late in the morning...then becoming northwest 10 to 15 knots
early in the afternoon decreasing to 5 to 10 knots late in the
afternoon. waves 3 to 5 feet subsiding to 2 to 4 feet in the late
morning and afternoon. 
.thursday night...west winds 5 to 10 knots backing to the south
after midnight. a chance of snow after midnight. waves 2 feet or
less. 
.friday...south winds 10 to 15 knots veering to the southwest
early in the afternoon. a chance of rain and snow in the morning.
waves 1 to 3 feet. 
.friday night...west winds 10 to 15 knots. waves 1 to 3 feet
building to 2 to 4 feet after midnight. 
.saturday...west winds 10 to 15 knots becoming south 15 to
20 knots late in the afternoon...then becoming north 20 to
25 knots late in the evening. a chance of rain and snow late in
the afternoon. waves 3 to 5 feet. 
.sunday...northeast winds 20 to 25 knots. a chance of snow and
rain early in the morning. waves 6 to 9 feet. waves occasionally
around 12 feet. 
.monday...north winds 15 to 20 knots decreasing to 10 to 15 knots
until early evening...then veering to the east by midnight. waves
6 to 9 feet subsiding to 2 to 4 feet. waves occasionally around
12 feet. 

wave heights are for ice free areas.

$$

fzus63 kdtx 190111
glflh 
expires:202603190915;;927642

open lake forecast for lake huron
national weather service detroit/pontiac mi
911 pm edt wed mar 18 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 weakening cold front and diffuse pressure pattern
dominate the great lakes thursday, followed by a compact clipper
that tracks through on friday. weak high pressure this weekend
before a strong cold front sinks across the region with gusty
northeast wind on sunday.


lhz363-462>464-190915-
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-
911 pm edt wed mar 18 2026

.rest of tonight...south winds 15 to 20 knots decreasing to 10 to
15 knots after midnight. waves 4 to 6 feet. waves occasionally
around 8 feet. 
.thursday...southwest winds 5 to 10 knots. waves 2 to 4 feet
subsiding to 1 to 3 feet in the late morning and afternoon. 
.thursday night...north winds 5 to 10 knots veering to the
northeast by midnight...then veering to the south after midnight.
waves 2 feet or less. 
.friday...south winds 10 to 15 knots. a chance of rain. waves
1 to 3 feet. 
.friday night...northwest winds 5 to 10 knots becoming west 10 to
15 knots after midnight. waves 1 to 3 feet. 
.saturday...west winds 10 to 15 knots backing to the south late
in the afternoon...then becoming west 15 to 20 knots late in the
evening. a chance of rain and snow late in the evening. waves
3 to 5 feet. 
.sunday...north winds 20 to 25 knots. a chance of rain and snow
early in the morning. waves 6 to 9 feet building to 8 to 12 feet
by midnight. waves occasionally around 15 feet. 
.monday...north winds 20 to 25 knots decreasing to 15 to 20 knots
in the late morning and early afternoon...then decreasing to
10 to 15 knots early in the evening veering to the northeast by
midnight. waves 6 to 9 feet subsiding to 3 to 5 feet . waves
occasionally around 12 feet. 


$$

fzus63 kmkx 190155
glflm 
expires:202603190915;;928291

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
855 pm cdt wed mar 18 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...

29.8 inch low pressure is positioned over ontario this evening, 
resulting in generally southwest winds across the open waters of 
lake michigan. said low will advance toward the southern hudson 
bay through daybreak as 30.1 inch high pressure builds into 
wisconsin from the northern great plains. thus anticipate that the
current southwest winds will trend light and variable by 
daybreak, with variable winds continuing through thursday morning.
some light rain is possible over the southern half of the open 
waters through sunrise. a new area of 29.7 inch low pressure is 
forecast to develop in the canadian great plains thursday 
afternoon, allowing winds to turn east-southeasterly across lake 
michigan. winds will veer south to southwesterly across the waters
thursday night as the surface low progresses over or just north 
of the northern half of lake michigan. some rain or snow is 
possible over northern lake michigan during the low's passage, 
with wind gusts expected to remain below gale thresholds. winds 
will turn west- northwesterly on friday as a cold front moves 
across the waters.

winds will become light friday night through saturday morning as 
30.0 inch high pressure moves across lake michigan. increasing 
southerly winds are expected saturday afternoon as a cold front 
approaches from the north. the front is expected to cross lake 
michigan saturday night into sunday morning, bringing gusty 
northerly winds into monday morning. rain and snow showers will 
accompany the passing cold front. widespread gales are not 
anticipated at this time, though trends will be monitored over 
coming forecasts. winds will decrease monday night, ultimately 
turning southerly and increasing once again during the day on 
tuesday.


lmz080-669-671-673-675-777-779-870-872-874-876-878-190915-
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-
855 pm cdt wed mar 18 2026

sheboygan wi to pentwater mi south...

.rest of tonight...south winds 10 to 15 kt becoming west. chance
of rain overnight. waves 3 to 5 ft subsiding to 2 to 4 ft. 
.thursday...northwest winds 5 to 10 kt veering to east. slight
chance of rain in the morning. waves 1 to 2 ft. 
.thursday night...east winds 5 to 10 kt becoming southeast late
in the evening, then becoming south 10 to 15 kt after midnight
increasing to 10 to 20 kt late. waves 1 to 3 ft. 
.friday...southwest winds 10 to 20 kt becoming northwest 10 to
15 kt. waves 2 to 4 ft. 
.friday night...northwest winds 5 to 10 kt becoming north 10 to
15 kt. waves 1 to 3 ft. 
.saturday...southwest winds 10 to 15 kt becoming south. waves
2 to 4 ft. 
.saturday night...southwest winds 10 to 20 kt veering to
northwest to 30 kt. waves 3 to 5 ft building to 6 to 9 ft
occasionally to 12 ft. 
.sunday...north winds to 30 kt. waves 8 to 12 ft occasionally to
16 ft. 
.monday...northeast winds 15 to 25 kt becoming north 10 to 20 kt.
waves 7 to 10 ft occasionally to 13 ft subsiding to 4 to 7 ft
occasionally to 9 ft.  

$$

fzus63 kmkx 190155
glflm 
expires:202603190915;;928290

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
855 pm cdt wed mar 18 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...

29.8 inch low pressure is positioned over ontario this evening, 
resulting in generally southwest winds across the open waters of 
lake michigan. said low will advance toward the southern hudson 
bay through daybreak as 30.1 inch high pressure builds into 
wisconsin from the northern great plains. thus anticipate that the
current southwest winds will trend light and variable by 
daybreak, with variable winds continuing through thursday morning.
some light rain is possible over the southern half of the open 
waters through sunrise. a new area of 29.7 inch low pressure is 
forecast to develop in the canadian great plains thursday 
afternoon, allowing winds to turn east-southeasterly across lake 
michigan. winds will veer south to southwesterly across the waters
thursday night as the surface low progresses over or just north 
of the northern half of lake michigan. some rain or snow is 
possible over northern lake michigan during the low's passage, 
with wind gusts expected to remain below gale thresholds. winds 
will turn west- northwesterly on friday as a cold front moves 
across the waters.

winds will become light friday night through saturday morning as 
30.0 inch high pressure moves across lake michigan. increasing 
southerly winds are expected saturday afternoon as a cold front 
approaches from the north. the front is expected to cross lake 
michigan saturday night into sunday morning, bringing gusty 
northerly winds into monday morning. rain and snow showers will 
accompany the passing cold front. widespread gales are not 
anticipated at this time, though trends will be monitored over 
coming forecasts. winds will decrease monday night, ultimately 
turning southerly and increasing once again during the day on 
tuesday.


lmz261-362-364-366-563-565-567-868-190915-
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-
855 pm cdt wed mar 18 2026

sheboygan wi to pentwater mi north...

.rest of tonight...southwest winds 10 to 20 kt becoming west
10 to 15 kt. chance of snow through early evening, then chance of
rain and slight chance of very light freezing drizzle overnight.
waves 4 to 6 ft occasionally to 8 ft subsiding to 2 to 4 ft. 
.thursday...northwest winds 5 to 10 kt backing to southeast.
waves 1 to 3 ft subsiding to 1 to 2 ft. 
.thursday night...southeast winds 5 to 10 kt becoming south 10 to
15 kt late in the evening, then increasing to 10 to 20 kt after
midnight becoming south 10 to 20 kt late. chance of light
freezing rain in the evening, then chance of rain and light
freezing rain likely overnight. waves 1 ft or less building to
1 to 3 ft. 
.friday...southwest winds 10 to 20 kt becoming west 10 to 15 kt.
light freezing rain likely in the morning. waves 2 to 4 ft. 
.friday night...northwest winds 10 to 15 kt. waves 1 to 2 ft. 
.saturday...southwest winds 10 to 15 kt increasing to 10 to
20 kt. waves 2 to 4 ft. 
.saturday night...north winds 15 to 25 kt increasing to 30 kt.
chance of rain and snow. waves 4 to 6 ft occasionally to 8 ft
building to 6 to 9 ft occasionally to 12 ft. 
.sunday...northeast winds to 30 kt. waves 7 to 10 ft occasionally
to 13 ft. 
.monday...northeast winds 10 to 20 kt becoming north. waves 4 to
7 ft occasionally to 9 ft subsiding to 3 to 5 ft.  

$$

fzus63 kmqt 190201
glfls 
expires:202603190800;;928444

open lake forecast for lake superior
national weather service marquette mi
1000 pm edt wed mar 18 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...

a 29.8 inch clipper low over northern ontario lifts towards james 
bay this evening. behind this low, weak ridging of around 30.1 
inches returns over lake superior on thursday ahead of another 
clipper low moving through the lake thursday night into early friday 
at around 29.7 inches. while a subsequent low moves through northern 
ontario towards james bay late friday/friday night, yet another low 
stretches into the northern plains around the same time. together, 
these lows are expected to bring about troughing of around around 
29.7 inch over lake superior on saturday. behind the troughing, 30.4 
inch ridging builds into the great lakes and northern plains to 
begin next week.



lsz264-190800-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
1000 pm edt wed mar 18 2026

.rest of tonight...west winds 5 to 15 knots veering north late. a
slight chance of freezing rain by midnight. waves 2 to 4 feet
subsiding to calm to 2 feet. 
.thursday...north winds 5 to 15 knots becoming northwest less
than 10 knots in the afternoon, then becoming southwest 5 to
15 knots late. a chance of snow showers by mid afternoon. waves
calm to 2 feet. 
.thursday night...south winds 5 to 15 knots increasing to 10 to
20 knots after midnight, then veering southwest late. snow
showers, possibly mixed with rain and freezing rain likely
through midnight, then a chance of rain showers, possibly mixed
with snow after midnight. waves building to 2 to 4 feet. 
.friday...north winds 5 to 15 knots backing west by mid
afternoon. waves subsiding to calm to 2 feet. 
.friday night...west winds 10 to 20 knots. waves building to 2 to
4 feet. 
.saturday...north winds 10 to 20 knots becoming northeast 15 to
25 knots by mid afternoon. a chance of rain showers through early
afternoon. a chance of snow showers. waves building to 3 to
5 feet occasionally to 7 feet. 
.saturday night...northeast winds 20 to 30 knots. a chance of
snow showers. freezing spray after midnight. waves building to
7 to 10 feet occasionally to 13 feet. 
.sunday...northeast winds 20 to 30 knots becoming north 5 to
15 knots. freezing spray. waves subsiding to 1 to 3 feet, then
building to 2 to 4 feet. 
.monday...southwest winds 5 to 15 knots increasing to gales to
35 knots. waves subsiding to 1 to 3 feet, then building to 8 to
11 feet occasionally to 14 feet. 

$$

fzus63 kmqt 190201
glfls 
expires:202603190800;;928445

open lake forecast for lake superior
national weather service marquette mi
1000 pm edt wed mar 18 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...

a 29.8 inch clipper low over northern ontario lifts towards james 
bay this evening. behind this low, weak ridging of around 30.1 
inches returns over lake superior on thursday ahead of another 
clipper low moving through the lake thursday night into early friday 
at around 29.7 inches. while a subsequent low moves through northern 
ontario towards james bay late friday/friday night, yet another low 
stretches into the northern plains around the same time. together, 
these lows are expected to bring about troughing of around around 
29.7 inch over lake superior on saturday. behind the troughing, 30.4 
inch ridging builds into the great lakes and northern plains to 
begin next week.



lsz265-190800-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
1000 pm edt wed mar 18 2026

.rest of tonight...west winds 10 to 20 knots veering northwest
after midnight. a slight chance of freezing rain. waves calm to
2 feet. 
.thursday...north winds 5 to 15 knots backing northwest in the
afternoon, then backing south late. a chance of snow showers by
mid afternoon. waves calm to 2 feet. 
.thursday night...southeast winds 10 to 20 knots becoming south
15 to 25 knots after midnight, then veering southwest late. a
chance of snow showers through midnight. a chance of rain
showers. waves building to 1 to 3 feet. 
.friday...northwest winds 10 to 20 knots. waves subsiding to calm
to 2 feet. 
.friday night...west winds 10 to 20 knots increasing to 15 to
25 knots after midnight. waves building to 1 to 3 feet. 
.saturday...northwest winds 15 to 25 knots becoming northeast
20 to 30 knots by mid afternoon. a chance of snow showers. waves
building to 3 to 5 feet occasionally to 7 feet. 
.saturday night...northeast 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 9 to 12 feet
occasionally to 15 feet. 
.sunday...northeast winds 20 to 30 knots becoming north 15 to
25 knots. freezing spray. waves subsiding to 3 to 6 feet
occasionally to 8 feet. 
.monday...northwest winds 15 to 25 knots becoming southwest gales
to 35 knots. waves subsiding to 1 to 3 feet, then building to
4 to 7 feet occasionally to 9 feet. 

$$

fzus63 kmqt 190201
glfls 
expires:202603190800;;928442

open lake forecast for lake superior
national weather service marquette mi
1000 pm edt wed mar 18 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...

a 29.8 inch clipper low over northern ontario lifts towards james 
bay this evening. behind this low, weak ridging of around 30.1 
inches returns over lake superior on thursday ahead of another 
clipper low moving through the lake thursday night into early friday 
at around 29.7 inches. while a subsequent low moves through northern 
ontario towards james bay late friday/friday night, yet another low 
stretches into the northern plains around the same time. together, 
these lows are expected to bring about troughing of around around 
29.7 inch over lake superior on saturday. behind the troughing, 30.4 
inch ridging builds into the great lakes and northern plains to 
begin next week.



lsz162-190800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1000 pm edt wed mar 18 2026 /900 pm cdt wed mar 18 2026/

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

$$

fzus63 kmqt 190201
glfls 
expires:202603190800;;928447

open lake forecast for lake superior
national weather service marquette mi
1000 pm edt wed mar 18 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...

a 29.8 inch clipper low over northern ontario lifts towards james 
bay this evening. behind this low, weak ridging of around 30.1 
inches returns over lake superior on thursday ahead of another 
clipper low moving through the lake thursday night into early friday 
at around 29.7 inches. while a subsequent low moves through northern 
ontario towards james bay late friday/friday night, yet another low 
stretches into the northern plains around the same time. together, 
these lows are expected to bring about troughing of around around 
29.7 inch over lake superior on saturday. behind the troughing, 30.4 
inch ridging builds into the great lakes and northern plains to 
begin next week.



lsz267-190800-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
1000 pm edt wed mar 18 2026

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

$$

fzus63 kmqt 190201
glfls 
expires:202603190800;;928446

open lake forecast for lake superior
national weather service marquette mi
1000 pm edt wed mar 18 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...

a 29.8 inch clipper low over northern ontario lifts towards james 
bay this evening. behind this low, weak ridging of around 30.1 
inches returns over lake superior on thursday ahead of another 
clipper low moving through the lake thursday night into early friday 
at around 29.7 inches. while a subsequent low moves through northern 
ontario towards james bay late friday/friday night, yet another low 
stretches into the northern plains around the same time. together, 
these lows are expected to bring about troughing of around around 
29.7 inch over lake superior on saturday. behind the troughing, 30.4 
inch ridging builds into the great lakes and northern plains to 
begin next week.



lsz266-190800-
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 pm edt wed mar 18 2026

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

$$

fzus63 kmqt 190201
glfls 
expires:202603190800;;928443

open lake forecast for lake superior
national weather service marquette mi
1000 pm edt wed mar 18 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...

a 29.8 inch clipper low over northern ontario lifts towards james 
bay this evening. behind this low, weak ridging of around 30.1 
inches returns over lake superior on thursday ahead of another 
clipper low moving through the lake thursday night into early friday 
at around 29.7 inches. while a subsequent low moves through northern 
ontario towards james bay late friday/friday night, yet another low 
stretches into the northern plains around the same time. together, 
these lows are expected to bring about troughing of around around 
29.7 inch over lake superior on saturday. behind the troughing, 30.4 
inch ridging builds into the great lakes and northern plains to 
begin next week.



lsz263-190800-
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 pm edt wed mar 18 2026

.rest of tonight...west winds 5 to 15 knots veering north late. a
slight chance of rain showers and freezing rain by midnight.
waves 1 to 3 feet subsiding to calm to 2 feet. 
.thursday...north winds 5 to 15 knots becoming south less than
10 knots in the afternoon, then increasing to 5 to 15 knots late.
a chance of rain and snow showers by mid afternoon. waves calm to
2 feet. 
.thursday night...southeast winds 5 to 15 knots becoming south
10 to 20 knots after midnight, then becoming west 5 to 15 knots
late. a chance of rain and snow showers. waves building to 1 to
3 feet, then subsiding to calm to 2 feet. 
.friday...northwest winds 5 to 15 knots backing west by mid
afternoon. waves calm to 2 feet. 
.friday night...west winds 5 to 15 knots. waves calm to 2 feet. 
.saturday...north winds 10 to 20 knots becoming northeast 15 to
25 knots by mid afternoon. a chance of snow showers. waves
building to 3 to 5 feet occasionally to 7 feet. 
.saturday night...northeast winds 20 to 30 knots. a chance of
snow showers. waves building to 7 to 10 feet occasionally to
13 feet. 
.sunday...northeast winds 15 to 25 knots diminishing to 10 to
20 knots. waves subsiding to 1 to 3 feet, then building to 2 to
4 feet. 
.monday...southwest winds 10 to 20 knots increasing to gales to
35 knots. waves subsiding to 1 to 3 feet, then building to 6 to
9 feet occasionally to 11 feet. 

$$