fzus61 kbuf 120802
glflo 
expires:202506121500;;106572

open lake forecast for lake ontario
national weather service buffalo ny
402 am edt thu jun 12 2025

for waters beyond five nautical miles of shore on lake ontario

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

.synopsis...

a 30.3 inch canadian high will ridge southeast across the lake today 
through saturday. a weak 29.9 inch area of low pressure will then 
slowly slide east from the ohio valley to near the delmarva by late 
monday.


loz062-121500-
lake ontario open waters from the niagara river to hamlin beach-
402 am edt thu jun 12 2025

.today...west winds 5 to 15 knots. waves 1 to 3 feet. 
.tonight...northwest winds 5 to 15 knots becoming northeast.
waves 2 feet or less. 
.friday...east winds 10 to 15 knots. waves 1 to 3 feet. 
.friday night...east winds 10 to 15 knots. waves 1 to 3 feet. 
.saturday...east winds 10 to 15 knots. a chance of showers
saturday night. waves 1 to 3 feet. 
.sunday...northeast winds 5 to 10 knots. a chance of showers
during the day. waves around 1 foot. 
.monday...northeast winds 5 to 10 knots becoming south. waves
1 foot or less. 

$$

fzus61 kbuf 120802
glflo 
expires:202506121500;;106573

open lake forecast for lake ontario
national weather service buffalo ny
402 am edt thu jun 12 2025

for waters beyond five nautical miles of shore on lake ontario

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

.synopsis...

a 30.3 inch canadian high will ridge southeast across the lake today 
through saturday. a weak 29.9 inch area of low pressure will then 
slowly slide east from the ohio valley to near the delmarva by late 
monday.


loz063>065-121500-
lake ontario open waters from hamlin beach to the saint lawrence
river-
402 am edt thu jun 12 2025

.today...west winds 10 to 15 knots increasing to 15 to 20 knots.
waves 2 to 4 feet subsiding to 1 to 3 feet. 
.tonight...west winds 5 to 15 knots becoming northeast. waves
1 to 3 feet. 
.friday...northeast winds 5 to 15 knots. waves 1 to 3 feet. 
.friday night...northeast winds 10 to 15 knots. a chance of
showers overnight. waves 2 feet or less. 
.saturday...northeast winds 5 to 15 knots. a chance of showers.
waves 2 feet or less. 
.sunday...northeast winds 5 to 10 knots becoming east. a chance
of showers during the day. waves 1 foot or less. 
.monday...east winds 5 to 10 knots becoming south. waves 1 foot
or less. 

$$

fzus61 kcle 120734
glfle 
expires:202506121415;;105496

open lake forecast for lake erie
national weather service cleveland oh
334 am edt thu jun 12 2025

for waters beyond five nautical miles of shore on lake erie

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

.synopsis...
a cold front will move south across lake erie late this thursday 
morning. the front will settle as a stationary front south of lake
erie through the weekend and into early next week.


lez164>167-121415-
the islands to vermilion oh beyond 5 nm off shoreline to us-
canadian border-
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-
334 am edt thu jun 12 2025

.today...east winds 5 to 15 knots becoming northeast. waves 1 to
3 feet. 
.tonight...northeast winds 10 to 15 knots becoming east. isolated
showers and thunderstorms early. waves 1 to 3 feet. 
.friday...east winds 15 to 20 knots becoming northeast. waves
2 to 4 feet building to 3 to 5 feet. 
.friday night...east winds 15 to 20 knots diminishing to 10 to
15 knots. a chance of showers. waves 2 to 4 feet. 
.saturday...east winds 10 to 15 knots. a chance of showers. waves
2 to 4 feet. 
.sunday...northeast winds 10 to 15 knots. a chance of showers
during the day. waves 1 to 3 feet. 
.monday...northeast winds 5 to 10 knots becoming southeast. waves
1 to 2 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 120734
glfle 
expires:202506121415;;105497

open lake forecast for lake erie
national weather service cleveland oh
334 am edt thu jun 12 2025

for waters beyond five nautical miles of shore on lake erie

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

.synopsis...
a cold front will move south across lake erie late this thursday 
morning. the front will settle as a stationary front south of lake
erie through the weekend and into early next week.


lez061-168-169-121415-
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-
334 am edt thu jun 12 2025

.today...north winds 10 knots or less becoming northeast. waves
1 to 2 feet. 
.tonight...east winds 5 to 15 knots becoming northeast. waves
2 feet or less. 
.friday...northeast winds 10 to 15 knots increasing to 15 to
20 knots. waves 1 to 3 feet building to 2 to 4 feet. 
.friday night...northeast winds 15 to 20 knots diminishing to
10 to 15 knots. a chance of showers. waves 1 to 3 feet. 
.saturday...northeast winds 10 to 15 knots. a chance of showers
during the day. waves 1 to 3 feet. 
.sunday...northeast winds 5 to 15 knots. waves 2 feet or less. 
.monday...northeast winds 5 to 10 knots becoming south. waves
1 foot or less. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 120734
glfle 
expires:202506121415;;105495

open lake forecast for lake erie
national weather service cleveland oh
334 am edt thu jun 12 2025

for waters beyond five nautical miles of shore on lake erie

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

.synopsis...
a cold front will move south across lake erie late this thursday 
morning. the front will settle as a stationary front south of lake
erie through the weekend and into early next week.


lez162-163-121415-
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-
334 am edt thu jun 12 2025

.today...east winds 10 to 15 knots. isolated showers and
thunderstorms late. waves 2 feet or less. 
.tonight...east winds 10 to 15 knots. isolated showers and
thunderstorms early. waves 1 to 3 feet. 
.friday...east winds 10 to 15 knots. a chance of showers and
thunderstorms in the afternoon. waves 1 to 3 feet building to
2 to 4 feet. 
.friday night...east winds 10 to 15 knots. a chance of showers.
waves 2 to 4 feet subsiding to 1 to 3 feet. 
.saturday...east winds 10 to 15 knots becoming northeast. showers
likely with a chance of thunderstorms during the day, then a
chance of showers saturday night. waves 1 to 3 feet. 
.sunday...northeast winds around 10 knots. a chance of showers
during the day. waves 2 feet or less. 
.monday...northeast winds 5 to 10 knots becoming southeast. waves
2 feet or less. 

winds and waves higher in and near thunderstorms.

$$

fzus63 kdtx 120733
glfsc 
expires:202506121545;;105308

lake st clair forecast
national weather service detroit/pontiac mi
333 am edt thu jun 12 2025

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 frontal boundary settles into lower michigan today
bringing periodic showers and storms friday and saturday. weak
high pressure, 30.10 inches, then follows for sunday.


lcz460-121545-
lake st clair-
333 am edt thu jun 12 2025

.today...northeast winds 5 to 10 knots. partly sunny. waves 2 feet
or less.
.tonight...northeast winds 10 to 15 knots. partly cloudy this
evening becoming mostly cloudy. waves 2 feet or less.
.friday...east winds 10 to 15 knots diminishing to 5 to 10 knots in
the late morning and afternoon. mostly cloudy. waves 2 feet or less.
.friday night...east winds 5 to 10 knots. mostly cloudy with a
chance of light showers. waves 2 feet or less.
.saturday...east winds 5 to 10 knots. mostly cloudy becoming partly
cloudy. a chance of light showers. waves 2 feet or less.
.sunday...northeast winds 5 to 10 knots. partly cloudy. waves 2 feet
or less.
.monday...east winds 5 to 10 knots. partly cloudy. waves 2 feet or
less.

$$

fzus63 kdtx 120733
glflh 
expires:202506121545;;105304

open lake forecast for lake huron
national weather service detroit/pontiac mi
333 am edt thu jun 12 2025

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 frontal boundary settles into lower michigan today
bringing periodic showers and storms friday and saturday. weak
high pressure, 30.10 inches, then follows for sunday.


lhz361-121545-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
333 am edt thu jun 12 2025

.today...northwest winds 5 to 10 knots. waves 2 feet or less. 
.tonight...north winds 5 to 10 knots. waves 2 feet or less. 
.friday...east winds 5 to 10 knots. a chance of showers. waves
1 to 3 feet. 
.friday night...east winds 5 to 10 knots. a chance of showers.
waves 1 to 3 feet. 
.saturday...east winds 10 to 15 knots becoming light and
variable. a chance of showers. waves 2 feet or less. 
.sunday...light and variable winds. waves 2 feet or less. 
.monday...light and variable winds becoming east 5 to 10 knots
until early morning. waves 2 feet or less. 


$$

fzus63 kdtx 120733
glflh 
expires:202506121545;;105305

open lake forecast for lake huron
national weather service detroit/pontiac mi
333 am edt thu jun 12 2025

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 frontal boundary settles into lower michigan today
bringing periodic showers and storms friday and saturday. weak
high pressure, 30.10 inches, then follows for sunday.


lhz362-363-462-121545-
lake huron from presque isle light to sturgeon point mi beyond
5nm off shore-
lake huron from sturgeon point to alabaster mi beyond 5nm off
shore-
lake huron from port austin to harbor beach beyond 5nm off shore-
333 am edt thu jun 12 2025

.today...northwest winds 5 to 10 knots. waves 2 feet or less. 
.tonight...north winds 5 to 10 knots. waves 2 feet or less. 
.friday...northeast winds 10 to 15 knots. a chance of showers.
waves 1 to 3 feet. 
.friday night...northeast winds 10 to 15 knots. a chance of
showers. waves 2 to 4 feet. 
.saturday...northeast winds 10 to 15 knots decreasing to 5 to
10 knots late in the afternoon. a chance of showers. waves 1 to
3 feet. 
.sunday...north winds 5 to 10 knots becoming light and variable.
waves 2 feet or less. 
.monday...light and variable winds becoming north 5 to 10 knots
until early evening...then veering to the east in the late
evening and early morning. waves 2 feet or less. 


$$

fzus63 kdtx 120733
glflh 
expires:202506121545;;105306

open lake forecast for lake huron
national weather service detroit/pontiac mi
333 am edt thu jun 12 2025

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 frontal boundary settles into lower michigan today
bringing periodic showers and storms friday and saturday. weak
high pressure, 30.10 inches, then follows for sunday.


lhz463-464-121545-
lake huron from harbor beach to port sanilac beyond 5nm off shore-
lake huron from port sanilac to port huron beyond 5nm off shore-
333 am edt thu jun 12 2025

.today...light and variable winds becoming north 5 to 10 knots in
the afternoon. waves 2 feet or less. 
.tonight...northeast winds 5 to 10 knots. waves 2 feet or less. 
.friday...northeast winds 5 to 10 knots. waves 2 feet or less. 
.friday night...northeast winds 10 to 15 knots becoming east 5 to
10 knots in the late evening and overnight. a chance of showers
after midnight. waves 1 to 3 feet. 
.saturday...east winds 5 to 10 knots. a chance of showers. waves
1 to 3 feet. 
.sunday...north winds 5 to 10 knots. waves 2 feet or less. 
.monday...light and variable winds becoming north 5 to 10 knots
until early evening...then veering to the east in the late
evening and early morning. waves 2 feet or less. 


$$

fzus63 kmkx 120748
glflm 
expires:202506121515;;105920

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
248 am cdt thu jun 12 2025

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... 

low pressure of 29.8 inches continues east into the northern new 
england states today as stationary front sits across the far 
southern lake. this stationary front will remain over the far 
southern portions of the lake through saturday. light to moderate 
northeast to east winds are expected for areas north of this frontal 
boundary. areas south of the front can expect light southeast winds. 

this front will drift southward and clear the lake early saturday as 
low pressure around 29.7 inches moves into the southern great lakes 
region from the rockies. light to north to northeast winds are 
expected across the entire lake saturday and sunday once the 
front has cleared. 

there will be multiple rounds/chances for rain and storms across the 
lake today through saturday. a round a rain is moving through 
central and southern lake earlier this morning with additional 
chances for rain across mid lake this evening into tonight. the best 
chance for rain/storms is friday into saturday morning across the 
northern half of the lake. there will be lulls in the rainfall.


lmz080-669-671-673-675-777-779-870-872-874-876-878-121515-
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-
248 am cdt thu jun 12 2025

sheboygan wi to pentwater mi south...

.today...northeast winds 10 to 15 kt becoming north 15 to 25 kt.
waves 1 to 3 ft building to 2 to 4 ft. 
.tonight...northeast winds 15 to 25 kt becoming east 10 to 20 kt.
slight chance of showers overnight. waves 2 to 4 ft. 
.friday...east winds 10 to 20 kt diminishing to 10 to 15 kt.
chance of showers in the afternoon. waves 2 to 4 ft. 
.friday night...east winds 10 to 15 kt. chance of showers. waves
1 to 3 ft. 
.saturday...east winds 10 to 15 kt becoming north. chance of
showers in the morning. waves 1 to 3 ft. 
.saturday night...north winds 10 to 15 kt. waves 1 to 3 ft. 
.sunday...north winds 5 to 10 kt increasing to 10 to 15 kt. waves
1 to 2 ft. 
.monday...east winds 5 to 10 kt becoming south 10 to 15 kt. waves
1 to 2 ft.  

$$

fzus63 kmkx 120748
glflm 
expires:202506121515;;105919

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
248 am cdt thu jun 12 2025

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... 

low pressure of 29.8 inches continues east into the northern new 
england states today as stationary front sits across the far 
southern lake. this stationary front will remain over the far 
southern portions of the lake through saturday. light to moderate 
northeast to east winds are expected for areas north of this frontal 
boundary. areas south of the front can expect light southeast winds. 

this front will drift southward and clear the lake early saturday as 
low pressure around 29.7 inches moves into the southern great lakes 
region from the rockies. light to north to northeast winds are 
expected across the entire lake saturday and sunday once the 
front has cleared. 

there will be multiple rounds/chances for rain and storms across the 
lake today through saturday. a round a rain is moving through 
central and southern lake earlier this morning with additional 
chances for rain across mid lake this evening into tonight. the best 
chance for rain/storms is friday into saturday morning across the 
northern half of the lake. there will be lulls in the rainfall.


lmz261-362-364-366-563-565-567-868-121515-
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-
248 am cdt thu jun 12 2025

sheboygan wi to pentwater mi north...

.today...northeast winds 10 to 15 kt increasing to 15 to 25 kt.
slight chance of showers this morning. waves 2 to 4 ft. 
.tonight...northeast winds 15 to 25 kt diminishing to 10 to
20 kt. slight chance of showers in the evening, then chance of
showers overnight. waves 2 to 4 ft. 
.friday...northeast winds 10 to 20 kt. chance of showers. waves
2 to 4 ft. 
.friday night...northeast winds 10 to 20 kt becoming east. chance
of showers. waves 1 to 3 ft. 
.saturday...east winds 10 to 20 kt becoming northeast. chance of
showers. waves 1 to 3 ft. 
.saturday night...northeast winds 10 to 20 kt diminishing to
10 to 15 kt. waves 1 to 2 ft. 
.sunday...northeast winds 10 to 15 kt. waves 1 to 2 ft. 
.monday...south winds 5 to 10 kt increasing to 10 to 15 kt. waves
1 ft or less.  

$$

fzus63 kmqt 120801
glfls 
expires:202506122000;;106538

open lake forecast for lake superior
national weather service marquette mi
401 am edt thu jun 12 2025

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 this morning, a 30.3 inch high over northern manitoba 
shifts to northern ontario, extending 30.2 inch ridging over lake 
superior. the high reaches james bay by friday afternoon, 
maintaining strength with 30.2 ridging remaining over the lake 
through the weekend. monday, high pressure shifts east of the great 
lakes while a broad low pressure of 29.7 inches moves over the 
plains, with the low arriving over the great lakes late monday into 
early tuesday morning.



lsz162-122000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
401 am edt thu jun 12 2025 /301 am cdt thu jun 12 2025/

.early this morning...northeast winds 10 to 20 knots. waves calm
to 2 feet. 
.today...northeast winds 10 to 20 knots. waves building to 2 to
4 feet. 
.tonight...northeast winds 10 to 20 knots veering east late. a
chance of showers. waves 2 to 4 feet. 
.friday...east winds 10 to 20 knots becoming northeast 15 to
25 knots in the afternoon. showers likely through early
afternoon, then a chance of showers by mid afternoon. waves
building to 3 to 6 feet occasionally to 8 feet. 
.friday night...northeast winds 15 to 25 knots diminishing to
10 to 20 knots after midnight. a chance of showers. waves
subsiding to 1 to 3 feet. 
.saturday...northeast winds 10 to 20 knots. a chance of showers.
waves subsiding to calm to 2 feet. 
.saturday night...northeast winds 5 to 15 knots. waves calm to
2 feet. 
.sunday...east winds 5 to 15 knots. a chance of showers. waves
calm to 2 feet. 
.monday...east winds 5 to 15 knots. a chance of showers and
thunderstorms. waves calm to 2 feet. 

$$

fzus63 kmqt 120801
glfls 
expires:202506122000;;106539

open lake forecast for lake superior
national weather service marquette mi
401 am edt thu jun 12 2025

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 this morning, a 30.3 inch high over northern manitoba 
shifts to northern ontario, extending 30.2 inch ridging over lake 
superior. the high reaches james bay by friday afternoon, 
maintaining strength with 30.2 ridging remaining over the lake 
through the weekend. monday, high pressure shifts east of the great 
lakes while a broad low pressure of 29.7 inches moves over the 
plains, with the low arriving over the great lakes late monday into 
early tuesday morning.



lsz263-122000-
lake superior from saxon harbor wi to upper entrance to portage
canal mi 5nm off shore to the us/canadian border including isle
royale national park-
401 am edt thu jun 12 2025

.early this morning...northeast winds 5 to 15 knots. waves calm
to 2 feet. 
.today...northeast winds 5 to 15 knots veering east late. waves
building to 2 to 4 feet, then subsiding to 1 to 3 feet. 
.tonight...east winds 5 to 15 knots. a chance of showers. waves
subsiding to calm to 2 feet. 
.friday...east winds 5 to 15 knots backing northeast in the
afternoon, then increasing to 10 to 20 knots late. a chance of
showers. waves building to 1 to 3 feet. 
.friday night...east winds 10 to 20 knots diminishing to 5 to
15 knots after midnight. a chance of showers. waves subsiding to
calm to 2 feet. 
.saturday...northeast winds 5 to 15 knots. a chance of showers.
waves calm to 2 feet. 
.saturday night...northeast winds 5 to 15 knots becoming east
less than 10 knots after midnight. waves calm to 2 feet. 
.sunday...east winds 5 to 15 knots veering southwest. waves calm
to 2 feet. 
.monday...south winds 5 to 15 knots veering southwest. a chance
of showers and thunderstorms. waves calm to 2 feet. 

$$

fzus63 kmqt 120801
glfls 
expires:202506122000;;106540

open lake forecast for lake superior
national weather service marquette mi
401 am edt thu jun 12 2025

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 this morning, a 30.3 inch high over northern manitoba 
shifts to northern ontario, extending 30.2 inch ridging over lake 
superior. the high reaches james bay by friday afternoon, 
maintaining strength with 30.2 ridging remaining over the lake 
through the weekend. monday, high pressure shifts east of the great 
lakes while a broad low pressure of 29.7 inches moves over the 
plains, with the low arriving over the great lakes late monday into 
early tuesday morning.



lsz264-122000-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
401 am edt thu jun 12 2025

.early this morning...north winds 5 to 15 knots. waves calm to
2 feet. 
.today...north winds 5 to 15 knots veering northeast in the
afternoon, then veering south late. waves calm to 2 feet. 
.tonight...east winds 5 to 15 knots diminishing to less than
10 knots after midnight. a slight chance of rain showers after
midnight. waves calm to 2 feet. 
.friday...east winds less than 10 knots increasing to 5 to
15 knots in the afternoon. a chance of showers. waves calm to
2 feet. 
.friday night...east winds 5 to 15 knots. a slight chance of rain
showers. waves calm to 2 feet. 
.saturday...east winds 5 to 15 knots. waves calm to 2 feet. 
.saturday night...east winds 5 to 15 knots becoming west less
than 10 knots after midnight. waves calm to 2 feet. 
.sunday...southeast winds 5 to 15 knots veering south. waves calm
to 2 feet. 
.monday...south winds 5 to 15 knots backing southeast. a chance
of showers. waves calm to 2 feet. 

$$

fzus63 kmqt 120801
glfls 
expires:202506122000;;106541

open lake forecast for lake superior
national weather service marquette mi
401 am edt thu jun 12 2025

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 this morning, a 30.3 inch high over northern manitoba 
shifts to northern ontario, extending 30.2 inch ridging over lake 
superior. the high reaches james bay by friday afternoon, 
maintaining strength with 30.2 ridging remaining over the lake 
through the weekend. monday, high pressure shifts east of the great 
lakes while a broad low pressure of 29.7 inches moves over the 
plains, with the low arriving over the great lakes late monday into 
early tuesday morning.



lsz265-122000-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
401 am edt thu jun 12 2025

.early this morning...north winds 5 to 15 knots. waves calm to
2 feet. 
.today...north winds 5 to 15 knots veering east late. waves calm
to 2 feet. 
.tonight...southeast winds 5 to 15 knots backing east after
midnight, then veering southeast late. a chance of rain showers
after midnight. waves calm to 2 feet. 
.friday...east winds 5 to 15 knots increasing to 10 to 20 knots
late. showers likely through early afternoon, then a chance of
showers by mid afternoon. waves calm to 2 feet. 
.friday night...east winds 10 to 20 knots. a chance of showers.
waves calm to 2 feet. 
.saturday...east winds 10 to 20 knots. a chance of showers. waves
calm to 2 feet. 
.saturday night...northeast winds 5 to 15 knots backing north
after midnight. waves calm to 2 feet. 
.sunday...east winds 5 to 15 knots veering south. waves calm to
2 feet. 
.monday...southeast winds 5 to 15 knots becoming south 10 to
20 knots. a chance of showers. waves calm to 2 feet. 

$$

fzus63 kmqt 120801
glfls 
expires:202506122000;;106542

open lake forecast for lake superior
national weather service marquette mi
401 am edt thu jun 12 2025

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 this morning, a 30.3 inch high over northern manitoba 
shifts to northern ontario, extending 30.2 inch ridging over lake 
superior. the high reaches james bay by friday afternoon, 
maintaining strength with 30.2 ridging remaining over the lake 
through the weekend. monday, high pressure shifts east of the great 
lakes while a broad low pressure of 29.7 inches moves over the 
plains, with the low arriving over the great lakes late monday into 
early tuesday morning.



lsz266-122000-
lake superior east of a line from manitou island to marquette mi
and west of a line from grand marais mi to the us/canadian border
beyond 5nm from shore-
401 am edt thu jun 12 2025

.early this morning...north winds 5 to 15 knots. waves calm to
2 feet. 
.today...north winds 5 to 15 knots backing northwest late. waves
calm to 2 feet. 
.tonight...northwest winds 5 to 15 knots veering northeast after
midnight, then veering east late. a chance of rain showers after
midnight. waves calm to 2 feet. 
.friday...east winds 5 to 15 knots. a chance of rain showers.
waves calm to 2 feet. 
.friday night...east winds 5 to 15 knots. a chance of showers.
waves calm to 2 feet. 
.saturday...east winds 10 to 20 knots. a chance of showers. waves
calm to 2 feet. 
.saturday night...northeast winds 5 to 15 knots backing north
after midnight. waves calm to 2 feet. 
.sunday...north winds 5 to 15 knots veering south. waves calm to
2 feet. 
.monday...south winds 5 to 15 knots increasing to 10 to 20 knots.
a chance of showers. waves calm to 2 feet. 

$$

fzus63 kmqt 120801
glfls 
expires:202506122000;;106543

open lake forecast for lake superior
national weather service marquette mi
401 am edt thu jun 12 2025

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 this morning, a 30.3 inch high over northern manitoba 
shifts to northern ontario, extending 30.2 inch ridging over lake 
superior. the high reaches james bay by friday afternoon, 
maintaining strength with 30.2 ridging remaining over the lake 
through the weekend. monday, high pressure shifts east of the great 
lakes while a broad low pressure of 29.7 inches moves over the 
plains, with the low arriving over the great lakes late monday into 
early tuesday morning.



lsz267-122000-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
401 am edt thu jun 12 2025

.early this morning...north winds 10 to 20 knots. waves calm to
2 feet. 
.today...north winds 10 to 20 knots becoming northwest 5 to
15 knots in the afternoon. waves calm to 2 feet. 
.tonight...northwest winds 5 to 15 knots veering north after
midnight, then veering east late. a chance of rain showers after
midnight. waves calm to 2 feet. 
.friday...east winds 5 to 15 knots increasing to 10 to 20 knots
in the afternoon. a chance of showers. waves calm to 2 feet. 
.friday night...east winds 10 to 20 knots. a chance of showers.
waves calm to 2 feet. 
.saturday...east winds 10 to 20 knots backing northeast by mid
afternoon. a chance of showers. waves calm to 2 feet. 
.saturday night...northeast winds 10 to 20 knots diminishing to
5 to 15 knots after midnight. waves calm to 2 feet. 
.sunday...north winds 5 to 15 knots veering south. waves calm to
2 feet. 
.monday...east winds 5 to 15 knots becoming south 10 to 20 knots.
a chance of showers. waves calm to 2 feet. 

$$