• CLASSIC IWINDSURF
    Classic myiWindsurfClassic Wind & Weather maps and graphs
Hello Guest
 • 

Classic iWindsurf
kiter? see iKitesurf.com
Grab the iWindsurf Mobile App & Sign On to the New iWindsurf Website
Hi guest · Get your free membership now · Log In ·
MI - north

Human Forecasts
 > Daily Briefing
 > Forecast Blog
 > Extended Disc.

Real-Time Data
 > Dynamic Map
 > Wind Obs Map
 > Radar + Satellite Map
 > Wind Obs Summary

Computer Forecasts
 > Model Tables
 > Wind Vector Fx Map
 > Wind FlowViz Fx Map

More Maps

Other Resources
Wind Graphs
Meteograms

Watches/Warnings
>None Active

New iWindsurf: Select your region for wind observations & forecasts:
North America | Europe | South America | Australia & Oceania | Asia | Africa

fzus63 kdtx 050751
glflh 
expires:202606051600;;210453

open lake forecast for lake huron
national weather service detroit/pontiac mi
351 am edt fri jun 5 2026

for waters beyond five nautical miles off shore on lake huron

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

.synopsis...a weak trough, 29.70 inches, tracks across the great
lakes today followed by a cold front saturday. this leads to
periods of showers and thunderstorms late this afternoon through
saturday afternoon. high pressure returns sunday and monday.


lhz361-051600-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
351 am edt fri jun 5 2026

.today...south winds 5 to 10 knots. a chance of showers in the
morning...then showers likely in the afternoon. waves 2 feet or
less. 
.tonight...southeast winds 5 to 10 knots early in the evening
becoming light and variable. showers likely in the evening...then
a chance of showers after midnight. waves 2 feet or less. 
.saturday...west winds 5 to 10 knots increasing to 10 to 15 knots
in the late morning and afternoon. a chance of showers in the
morning. waves 1 to 3 feet. 
.saturday night...northwest winds 10 to 15 knots decreasing to
5 to 10 knots after midnight. waves 1 to 3 feet. 
.sunday...north winds 5 to 10 knots in the morning becoming light
and variable...then becoming southeast 5 to 10 knots late in the
evening. waves 2 feet or less. 
.monday...east winds 5 to 10 knots increasing to 10 to 15 knots
in the late morning and early afternoon...then increasing to
15 to 20 knots early in the evening becoming southeast 10 to
15 knots by midnight. waves 2 feet or less building to 3 to
5 feet. 
.tuesday...east winds 10 to 15 knots decreasing to 5 to 10 knots
by midnight. a chance of showers. waves 1 to 3 feet building to
2 to 4 feet. 


$$
fzus63 kdtx 050751
glflh 
expires:202606051600;;210454

open lake forecast for lake huron
national weather service detroit/pontiac mi
351 am edt fri jun 5 2026

for waters beyond five nautical miles off shore on lake huron

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

.synopsis...a weak trough, 29.70 inches, tracks across the great
lakes today followed by a cold front saturday. this leads to
periods of showers and thunderstorms late this afternoon through
saturday afternoon. high pressure returns sunday and monday.


lhz362-363-051600-
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-
351 am edt fri jun 5 2026

.today...south winds 10 to 15 knots. a chance of showers in the
afternoon. waves 1 to 3 feet. 
.tonight...south winds 10 to 15 knots decreasing to 5 to 10 knots
after midnight...then veering to the southwest early in the
morning. showers likely in the evening...then a chance of showers
after midnight. waves 1 to 3 feet. 
.saturday...southwest winds 5 to 10 knots. a chance of showers.
waves 1 to 3 feet. 
.saturday night...northwest winds 5 to 10 knots increasing to
10 to 15 knots in the late evening and overnight. waves 2 to
4 feet. 
.sunday...north winds 5 to 10 knots in the morning becoming light
and variable. waves 2 feet or less. 
.monday...east winds 5 to 10 knots becoming southeast 10 to
15 knots by midnight. waves 2 feet or less. 
.tuesday...southeast winds 10 to 15 knots decreasing to 5 to
10 knots by midnight. a chance of showers by midnight. waves 1 to
3 feet. 


$$
fzus63 kdtx 050751
glflh 
expires:202606051600;;210455

open lake forecast for lake huron
national weather service detroit/pontiac mi
351 am edt fri jun 5 2026

for waters beyond five nautical miles off shore on lake huron

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

.synopsis...a weak trough, 29.70 inches, tracks across the great
lakes today followed by a cold front saturday. this leads to
periods of showers and thunderstorms late this afternoon through
saturday afternoon. high pressure returns sunday and monday.


lhz462>464-051600-
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-
351 am edt fri jun 5 2026

.today...south winds 10 to 15 knots. a chance of showers in the
afternoon. waves 1 to 3 feet. 
.tonight...south winds 5 to 10 knots becoming southwest 10 to
15 knots. showers and a chance of thunderstorms in the evening...
then a chance of showers after midnight. waves 1 to 3 feet. 
.saturday...west winds 5 to 10 knots. a chance of showers in the
morning...then a chance of showers and thunderstorms in the
afternoon. waves 2 feet or less. 
.saturday night...light and variable winds becoming north 5 to
10 knots after midnight. waves 2 feet or less. 
.sunday...north winds 5 to 10 knots. waves 2 feet or less. 
.monday...east winds 5 to 10 knots increasing to 10 to 15 knots
by midnight. waves 2 feet or less. 
.tuesday...southeast winds 5 to 10 knots increasing to 10 to
15 knots in the late morning and early afternoon...then
decreasing to 5 to 10 knots early in the evening becoming south
10 to 15 knots by midnight. a chance of until afternoon. a chance
of showers. waves 1 to 3 feet. 


$$
fzus63 kmkx 050801
glflm 
expires:202606051530;;210746

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
301 am cdt fri jun 5 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...

low pressure of 29.6 inches over the central plains will connect
with another low of 29.7 inches over southwest ontario. the 
canadian low will track across the northern great lakes today,  
bringing prevailing southwesterly winds to lake michigan along 
with shower and thunderstorm chances ahead of a cold front. then 
expect the cold front to push through the region this evening 
into saturday, bringing additional shower and thunderstorm 
chances along with a more northwest to westerly wind shift behind 
it into saturday. then winds weaken and become more variable as 
high pressure around 30.0 inches builds across the region later 
saturday into sunday. looking ahead, the start of next week will 
bring an additional low pressure system to develop over the plains
and bring a return of southerly winds to the upper great lakes.


lmz080-669-671-673-675-777-779-870-872-874-876-878-051530-
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-
301 am cdt fri jun 5 2026

sheboygan wi to pentwater mi south...

.today...south winds 10 to 20 kt increasing to 15 to 25 kt.
showers and slight chance of thunderstorms this morning, then
showers likely with a chance of thunderstorms this afternoon.
waves 2 to 4 ft. 
.tonight...southwest winds 10 to 20 kt diminishing to 10 to
15 kt. chance of showers and thunderstorms. waves 2 to 4 ft.
.saturday...southwest winds 10 to 20 kt diminishing to 10 to
15 kt late in the morning, then becoming southwest 10 to 15 kt
early in the afternoon backing to east 5 to 10 kt late. waves
1 to 3 ft. 
.saturday night...northeast winds 5 to 10 kt. waves 1 to 2 ft. 
.sunday...northeast winds 5 to 10 kt increasing to 10 to 15 kt.
waves 1 ft or less. 
.sunday night...northeast winds 10 to 15 kt becoming east 10 to
20 kt. waves 1 to 3 ft building to 2 to 4 ft. 
.monday...southeast winds 10 to 20 kt. waves 3 to 5 ft. 
.tuesday...south winds 10 to 20 kt. chance of showers. waves 2 to
4 ft.  

$$
fzus63 kmkx 050801
glflm 
expires:202606051530;;210745

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
301 am cdt fri jun 5 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...

low pressure of 29.6 inches over the central plains will connect
with another low of 29.7 inches over southwest ontario. the 
canadian low will track across the northern great lakes today,  
bringing prevailing southwesterly winds to lake michigan along 
with shower and thunderstorm chances ahead of a cold front. then 
expect the cold front to push through the region this evening 
into saturday, bringing additional shower and thunderstorm 
chances along with a more northwest to westerly wind shift behind 
it into saturday. then winds weaken and become more variable as 
high pressure around 30.0 inches builds across the region later 
saturday into sunday. looking ahead, the start of next week will 
bring an additional low pressure system to develop over the plains
and bring a return of southerly winds to the upper great lakes.


lmz261-362-364-366-563-565-567-868-051530-
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-
301 am cdt fri jun 5 2026

sheboygan wi to pentwater mi north...

.today...south winds 10 to 20 kt. chance of showers this morning,
then slight chance of showers this afternoon. waves 2 to 4 ft. 
.tonight...south winds 10 to 20 kt becoming west 10 to 15 kt.
chance of showers and slight chance of thunderstorms. waves 2 to
4 ft subsiding to 1 to 3 ft. 
.saturday...west winds 5 to 10 kt becoming southwest 10 to 15 kt.
waves 1 to 3 ft. 
.saturday night...northeast winds 10 to 15 kt diminishing to 5 to
10 kt. waves 1 to 2 ft. 
.sunday...northeast winds 5 to 10 kt increasing to 10 to 20 kt in
the afternoon. waves 1 ft or less. 
.sunday night...east winds 10 to 20 kt becoming southeast. waves
1 to 2 ft building to 2 to 4 ft. 
.monday...southeast winds 10 to 20 kt becoming east. waves 2 to
4 ft. 
.tuesday...southeast winds 10 to 20 kt becoming south. chance of
showers. waves 2 to 4 ft.  

$$
fzus63 kmqt 050801
glfls 
expires:202606052000;;210677

open lake forecast for lake superior
national weather service marquette mi
400 am edt fri jun 5 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 29.7 inch low over northwest ontario is extending 29.8 inch 
troughing over lake superior this morning. the low moves slowly east 
along the northern shores of the lake today while deepening to 29.6 
inches. by early saturday morning, the low moves into quebec, 
shifting southeastwards towards the st. lawrence seaway through the 
day as weak 29.9 inch ridging moves over lake superior late. in the 
meantime, a 29.3 inch low pressure forms in the lee of the rockies. 
ridging over lake superior builds to 30.1 inches by sunday as the 
low weakens to 29.4 inches and moves into the western dakotas. by 
monday afternoon, expect lake superior to be between a 29.8 inch 
trough over minnesota and 30.2 inch high pressure over new england. 
the troughing weakens to 29.9 inches before moving over lake 
superior on tuesday. 




lsz264-052000-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
400 am edt fri jun 5 2026

.early this morning...south winds 5 to 15 knots. a chance of rain
showers. waves calm to 2 feet. 
.today...southwest winds 5 to 15 knots diminishing to less than
10 knots in the afternoon, then backing south late. waves calm to
2 feet. 
.tonight...southwest winds less than 10 knots veering west after
midnight, then becoming northwest 5 to 15 knots late. a slight
chance of rain showers after midnight. waves calm to 2 feet. 
.saturday...northwest winds 5 to 15 knots backing west in the
afternoon. waves calm to 2 feet. 
.saturday night...west winds less than 10 knots backing east
after midnight. waves calm to 2 feet. 
.sunday...east winds 5 to 15 knots. waves calm to 2 feet. 
.sunday night...southeast winds 10 to 20 knots diminishing to
5 to 15 knots after midnight. waves calm to 2 feet. 
.monday...southeast winds 10 to 20 knots. a chance of showers.
waves building to 3 to 5 feet occasionally to 7 feet, then
subsiding to 2 to 4 feet. 
.tuesday...southeast winds 5 to 15 knots veering south. a chance
of rain showers. waves subsiding to calm to 2 feet. 

$$
fzus63 kmqt 050801
glfls 
expires:202606052000;;210678

open lake forecast for lake superior
national weather service marquette mi
400 am edt fri jun 5 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 29.7 inch low over northwest ontario is extending 29.8 inch 
troughing over lake superior this morning. the low moves slowly east 
along the northern shores of the lake today while deepening to 29.6 
inches. by early saturday morning, the low moves into quebec, 
shifting southeastwards towards the st. lawrence seaway through the 
day as weak 29.9 inch ridging moves over lake superior late. in the 
meantime, a 29.3 inch low pressure forms in the lee of the rockies. 
ridging over lake superior builds to 30.1 inches by sunday as the 
low weakens to 29.4 inches and moves into the western dakotas. by 
monday afternoon, expect lake superior to be between a 29.8 inch 
trough over minnesota and 30.2 inch high pressure over new england. 
the troughing weakens to 29.9 inches before moving over lake 
superior on tuesday. 




lsz265-052000-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
400 am edt fri jun 5 2026

.early this morning...south winds 10 to 20 knots. a chance of
showers. waves calm to 2 feet. 
.today...southwest winds 5 to 15 knots backing east in the
afternoon. a slight chance of showers. a slight chance of
thunderstorms by mid afternoon. waves calm to 2 feet. 
.tonight...south winds 5 to 15 knots veering west after midnight.
a slight chance of thunderstorms through midnight. a slight
chance of showers. waves calm to 2 feet. 
.saturday...northwest winds 5 to 15 knots veering north late.
waves calm to 2 feet. 
.saturday night...northwest winds less than 10 knots becoming
east 5 to 15 knots after midnight. waves calm to 2 feet. 
.sunday...east winds 5 to 15 knots increasing to 10 to 20 knots
by mid afternoon. waves calm to 2 feet. 
.sunday night...southeast winds 10 to 20 knots. waves building to
1 to 3 feet. 
.monday...southeast winds 15 to 25 knots. waves building to 3 to
6 feet occasionally to 8 feet, then subsiding to 2 to 4 feet. 
.tuesday...southeast winds 10 to 20 knots becoming south 5 to
15 knots. a chance of showers. waves subsiding to calm to 2 feet.

$$
fzus63 kmqt 050801
glfls 
expires:202606052000;;210679

open lake forecast for lake superior
national weather service marquette mi
400 am edt fri jun 5 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 29.7 inch low over northwest ontario is extending 29.8 inch 
troughing over lake superior this morning. the low moves slowly east 
along the northern shores of the lake today while deepening to 29.6 
inches. by early saturday morning, the low moves into quebec, 
shifting southeastwards towards the st. lawrence seaway through the 
day as weak 29.9 inch ridging moves over lake superior late. in the 
meantime, a 29.3 inch low pressure forms in the lee of the rockies. 
ridging over lake superior builds to 30.1 inches by sunday as the 
low weakens to 29.4 inches and moves into the western dakotas. by 
monday afternoon, expect lake superior to be between a 29.8 inch 
trough over minnesota and 30.2 inch high pressure over new england. 
the troughing weakens to 29.9 inches before moving over lake 
superior on tuesday. 




lsz266-052000-
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 fri jun 5 2026

.early this morning...south winds 10 to 20 knots. a chance of
showers. waves 1 to 3 feet subsiding to calm to 2 feet. 
.today...south winds 5 to 15 knots veering southwest in the
afternoon, then backing east late. a chance of showers. a slight
chance of thunderstorms by mid afternoon. waves calm to 2 feet. 
.tonight...south winds 5 to 15 knots veering west after midnight.
a slight chance of showers and thunderstorms. waves calm to
2 feet. 
.saturday...northwest winds 5 to 15 knots increasing to 10 to
20 knots in the afternoon, then diminishing to 5 to 15 knots
late. waves calm to 2 feet. 
.saturday night...northwest winds 5 to 15 knots veering east
after midnight. waves calm to 2 feet. 
.sunday...east winds 5 to 15 knots. waves calm to 2 feet. 
.sunday night...southeast winds 10 to 20 knots. waves building to
1 to 3 feet. 
.monday...southeast winds 15 to 25 knots. a chance of showers.
waves building to 3 to 5 feet occasionally to 7 feet, then
subsiding to 2 to 4 feet. 
.tuesday...southeast winds 10 to 20 knots veering south. a chance
of showers. waves subsiding to calm to 2 feet. 

$$
fzus63 kmqt 050801
glfls 
expires:202606052000;;210680

open lake forecast for lake superior
national weather service marquette mi
400 am edt fri jun 5 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 29.7 inch low over northwest ontario is extending 29.8 inch 
troughing over lake superior this morning. the low moves slowly east 
along the northern shores of the lake today while deepening to 29.6 
inches. by early saturday morning, the low moves into quebec, 
shifting southeastwards towards the st. lawrence seaway through the 
day as weak 29.9 inch ridging moves over lake superior late. in the 
meantime, a 29.3 inch low pressure forms in the lee of the rockies. 
ridging over lake superior builds to 30.1 inches by sunday as the 
low weakens to 29.4 inches and moves into the western dakotas. by 
monday afternoon, expect lake superior to be between a 29.8 inch 
trough over minnesota and 30.2 inch high pressure over new england. 
the troughing weakens to 29.9 inches before moving over lake 
superior on tuesday. 




lsz267-052000-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
400 am edt fri jun 5 2026

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

$$
fzus63 kmqt 050801
glfls 
expires:202606052000;;210675

open lake forecast for lake superior
national weather service marquette mi
400 am edt fri jun 5 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 29.7 inch low over northwest ontario is extending 29.8 inch 
troughing over lake superior this morning. the low moves slowly east 
along the northern shores of the lake today while deepening to 29.6 
inches. by early saturday morning, the low moves into quebec, 
shifting southeastwards towards the st. lawrence seaway through the 
day as weak 29.9 inch ridging moves over lake superior late. in the 
meantime, a 29.3 inch low pressure forms in the lee of the rockies. 
ridging over lake superior builds to 30.1 inches by sunday as the 
low weakens to 29.4 inches and moves into the western dakotas. by 
monday afternoon, expect lake superior to be between a 29.8 inch 
trough over minnesota and 30.2 inch high pressure over new england. 
the troughing weakens to 29.9 inches before moving over lake 
superior on tuesday. 




lsz162-052000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
400 am edt fri jun 5 2026 /300 am cdt fri jun 5 2026/

.early this morning...southwest winds less than 10 knots. a
slight chance of rain showers. waves calm to 2 feet. 
.today...southwest winds 5 to 15 knots. a slight chance of
showers and thunderstorms by mid afternoon. waves calm to 2 feet.
.tonight...west winds 5 to 15 knots veering northwest late. a
slight chance of showers and thunderstorms through midnight.
waves calm to 2 feet. 
.saturday...west winds 5 to 15 knots backing south in the
afternoon, then backing east late. waves calm to 2 feet. 
.saturday night...east winds 5 to 15 knots backing northeast
after midnight. waves calm to 2 feet. 
.sunday...northeast winds 10 to 20 knots. waves building to 2 to
4 feet. 
.sunday night...northeast winds 10 to 20 knots diminishing to
5 to 15 knots after midnight. waves subsiding to calm to 2 feet. 
.monday...northeast winds 10 to 20 knots diminishing to 5 to
15 knots. a chance of showers. showers likely. waves calm to
2 feet. 
.tuesday...northeast winds 5 to 15 knots. waves calm to 2 feet. 

$$
fzus63 kmqt 050801
glfls 
expires:202606052000;;210676

open lake forecast for lake superior
national weather service marquette mi
400 am edt fri jun 5 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 29.7 inch low over northwest ontario is extending 29.8 inch 
troughing over lake superior this morning. the low moves slowly east 
along the northern shores of the lake today while deepening to 29.6 
inches. by early saturday morning, the low moves into quebec, 
shifting southeastwards towards the st. lawrence seaway through the 
day as weak 29.9 inch ridging moves over lake superior late. in the 
meantime, a 29.3 inch low pressure forms in the lee of the rockies. 
ridging over lake superior builds to 30.1 inches by sunday as the 
low weakens to 29.4 inches and moves into the western dakotas. by 
monday afternoon, expect lake superior to be between a 29.8 inch 
trough over minnesota and 30.2 inch high pressure over new england. 
the troughing weakens to 29.9 inches before moving over lake 
superior on tuesday. 




lsz263-052000-
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 fri jun 5 2026

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

$$
© Copyright 2026 WeatherFlow, Inc · Contact Us ·