(1/10)
Latest Great Lakes Marine Forecast by KDTX
Issued 4/22/2026 9:27 AM America/New_York.
Valid through 4/22/2026 5:30 PM America/New_York.
fzus63 kdtx 221327
glflh
expires:202604222130;;799502
open lake forecast for lake huron
national weather service detroit/pontiac mi
927 am edt wed apr 22 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 cold front settles south of lake erie wednesday
morning with high pressure filling in behind it. a warm front
then slowly lifts into the area late thursday into friday as the
parent low pressure stalls over the northern plains. a secondary
low will develop along the front and track across the southern
great lakes friday night.
lhz361>363-222130-
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-
lake huron from sturgeon point to alabaster mi beyond 5nm off
shore-
927 am edt wed apr 22 2026
.rest of today...north winds 5 to 10 knots in the late morning
and early afternoon becoming light and variable. waves 2 feet or
less.
.tonight...light and variable winds. waves 2 feet or less.
.thursday...east winds 5 to 10 knots increasing to 10 to 15 knots
in the late morning and afternoon. waves 1 to 3 feet building to
3 to 5 feet in the late morning and afternoon.
.thursday night...east winds 10 to 15 knots increasing to 15 to
20 knots in the late evening and overnight. waves 4 to 6 feet.
.friday...east winds 15 to 20 knots. a chance of showers late in
the afternoon. showers likely late in the evening. waves 6 to
9 feet. waves occasionally around 12 feet.
.saturday...northeast winds 10 to 15 knots backing to the north
early in the evening...then decreasing to 5 to 10 knots by
midnight. a chance of showers early in the morning. waves 4 to
6 feet subsiding to 2 to 4 feet by midnight. waves occasionally
around 8 feet.
.sunday...north winds 5 to 10 knots. waves 2 to 4 feet subsiding
to 1 to 3 feet.
$$
(2/10)
Latest Great Lakes Marine Forecast by KDTX
Issued 4/22/2026 9:27 AM America/New_York.
Valid through 4/22/2026 5:30 PM America/New_York.
fzus63 kdtx 221327
glflh
expires:202604222130;;799503
open lake forecast for lake huron
national weather service detroit/pontiac mi
927 am edt wed apr 22 2026
for waters beyond five nautical miles off shore on lake huron
waves are the significant wave height - the average of the highest
1/3 of the wave spectrum. occasional wave height is the average of
the highest 1/10 of the wave spectrum.
.synopsis...a cold front settles south of lake erie wednesday
morning with high pressure filling in behind it. a warm front
then slowly lifts into the area late thursday into friday as the
parent low pressure stalls over the northern plains. a secondary
low will develop along the front and track across the southern
great lakes friday night.
lhz462>464-222130-
lake huron from port austin to harbor beach beyond 5nm off shore-
lake huron from harbor beach to port sanilac beyond 5nm off shore-
lake huron from port sanilac to port huron beyond 5nm off shore-
927 am edt wed apr 22 2026
.rest of today...north winds 5 to 10 knots. waves 2 feet or less.
.tonight...north winds 5 to 10 knots early in the evening
becoming light and variable. waves 2 feet or less.
.thursday...east winds 5 to 10 knots. waves 2 feet or less.
.thursday night...east winds 5 to 10 knots becoming southeast
10 to 15 knots after midnight. waves 1 to 3 feet.
.friday...southeast winds 10 to 15 knots increasing to 15 to
20 knots late in the evening. showers likely late in the evening.
waves 1 to 3 feet building to 3 to 5 feet late in the afternoon.
.saturday...east winds 10 to 15 knots backing to the north until
early evening...then decreasing to 5 to 10 knots by midnight.
showers likely early in the morning...then a chance of showers in
the late morning and early afternoon. waves 3 to 5 feet subsiding
to 1 to 3 feet .
.sunday...north winds 5 to 10 knots. waves 1 to 3 feet.
$$
(3/10)
Latest Great Lakes Marine Forecast by KMKX
Issued 4/22/2026 9:06 AM US/Central.
Valid through 4/22/2026 4:30 PM US/Central.
fzus63 kmkx 221406
glflm
expires:202604222130;;800558
open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
906 am cdt wed apr 22 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...
high pressure will shift from the northern great lakes to the
lower great lakes today. light northerly winds are expected with
areas of fog over far southern lake michigan.
winds veer southeast and accelerate tonight through friday
morning as 29.2 inch low pressure develops over the northern great
plains and slowly tracks eastward. some 30 kt easterly winds may
occur over the northern tip of the lake due to a surface ridge of
high pressure in southeastern ontario sharpening the pressure
gradient.
the low will pull a cold front across lake michigan friday
afternoon and evening, resulting in a breezy north-northwest wind
shift. showers and thunderstorms are expected late thursday night
through friday, both ahead of and along the front. severe weather
is not anticipated at this time.
northerly winds will continue through the weekend across lake
michigan. 29.4 inch low pressure is forecast to track
northeastward from the central great plains (sunday night) near or
over lake michigan (monday night), with gusty east to southeast
winds ahead of its arrival and gusty west or northwest winds
behind it (into tuesday). not seeing widespread gale potential
with this system, though trends will be monitored.
lmz080-669-671-673-675-777-779-870-872-874-876-878-222130-
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-
906 am cdt wed apr 22 2026
sheboygan wi to pentwater mi south...
.rest of today...north winds 10 to 20 kt diminishing to 5 to
10 kt. patchy fog. waves 1 to 3 ft.
.tonight...northeast winds 5 to 10 kt veering to southeast.
patchy fog. waves 1 to 2 ft.
.thursday...south winds 10 to 20 kt. waves 2 to 4 ft.
.thursday night...south winds 10 to 20 kt. waves 4 to 6 ft
occasionally to 8 ft.
.friday...south winds 10 to 20 kt. rain showers likely. waves
4 to 6 ft occasionally to 8 ft.
.friday night...west winds 10 to 15 kt becoming northwest 10 to
20 kt. chance of rain showers. waves 3 to 5 ft.
.saturday...north winds 10 to 20 kt. waves 2 to 4 ft.
.sunday...east winds 5 to 10 kt becoming northeast 10 to 15 kt.
waves 1 to 2 ft.
$$
(4/10)
Latest Great Lakes Marine Forecast by KMKX
Issued 4/22/2026 9:06 AM US/Central.
Valid through 4/22/2026 4:30 PM US/Central.
fzus63 kmkx 221406
glflm
expires:202604222130;;800557
open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
906 am cdt wed apr 22 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...
high pressure will shift from the northern great lakes to the
lower great lakes today. light northerly winds are expected with
areas of fog over far southern lake michigan.
winds veer southeast and accelerate tonight through friday
morning as 29.2 inch low pressure develops over the northern great
plains and slowly tracks eastward. some 30 kt easterly winds may
occur over the northern tip of the lake due to a surface ridge of
high pressure in southeastern ontario sharpening the pressure
gradient.
the low will pull a cold front across lake michigan friday
afternoon and evening, resulting in a breezy north-northwest wind
shift. showers and thunderstorms are expected late thursday night
through friday, both ahead of and along the front. severe weather
is not anticipated at this time.
northerly winds will continue through the weekend across lake
michigan. 29.4 inch low pressure is forecast to track
northeastward from the central great plains (sunday night) near or
over lake michigan (monday night), with gusty east to southeast
winds ahead of its arrival and gusty west or northwest winds
behind it (into tuesday). not seeing widespread gale potential
with this system, though trends will be monitored.
lmz261-362-364-366-563-565-567-868-222130-
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-
906 am cdt wed apr 22 2026
sheboygan wi to pentwater mi north...
.rest of today...northeast winds 10 to 20 kt diminishing to 5 to
10 kt. waves 1 to 3 ft.
.tonight...east winds 5 to 10 kt becoming southeast 10 to 15 kt.
waves 1 to 2 ft.
.thursday...southeast winds 10 to 20 kt increasing to 15 to
25 kt. waves 2 to 4 ft.
.thursday night...southeast winds to 30 kt. waves 4 to 6 ft
occasionally to 8 ft.
.friday...southeast winds to 30 kt. chance of rain showers in the
morning, then rain showers likely in the afternoon. waves 4 to
7 ft occasionally to 9 ft.
.friday night...north winds to 30 kt diminishing to 15 to 25 kt.
chance of rain showers. waves 4 to 6 ft occasionally to 8 ft
subsiding to 3 to 5 ft.
.saturday...north winds 10 to 20 kt. waves 2 to 4 ft.
.sunday...east winds 5 to 10 kt becoming northeast 10 to 15 kt.
waves 1 ft or less.
$$
(5/10)
Latest Great Lakes Marine Forecast by KMQT
Issued 4/22/2026 10:01 AM America/New_York.
Valid through 4/22/2026 4:00 PM America/New_York.
fzus63 kmqt 221401
glfls
expires:202604222000;;800342
open lake forecast for lake superior
national weather service marquette mi
1000 am edt wed apr 22 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...
30.0 inch high pressure remains over lake superior today. meanwhile,
a 29.4 inch low over montana deepens to 29.1 inches by this evening
before moving into southern manitoba by thursday evening. this sends
29.6 in troughing over lake superior thursday night into friday. as
the parent low weakens to 29.9 inches saturday and remnant troughing
moves south of the lower great lakes at 29.7 inches, 30.0 inch
ridging will build over lake superior. by late sunday, this ridge
builds to 30.1 inches. meanwhile, a 29.3 inch colorado low develops,
moving towards the upper midwest by early monday, causing pressure
over lake superior to begin to fall rapidly toward 29.5 by mid-
monday.
lsz264-222000-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
1000 am edt wed apr 22 2026
.rest of today...southeast winds less than 10 knots increasing to
5 to 15 knots in the afternoon. waves calm to 2 feet.
.tonight...east winds 15 to 25 knots veering southeast after
midnight. a chance of rain showers after midnight. waves building
to 3 to 5 feet occasionally to 7 feet.
.thursday...southeast winds 20 to 30 knots becoming east to
30 knots with a few gale force gusts to 35 knots possible late.
waves building to 7 to 10 feet occasionally to 13 feet.
.thursday night...southeast gales to 35 knots. a chance of rain
showers and a slight chance of thunderstorms. waves building to
9 to 12 feet occasionally to 15 feet.
.friday...southeast gales to 35 knots diminishing to 20 to
30 knots by mid afternoon. rain showers likely and a slight
chance of thunderstorms. waves subsiding to 6 to 9 feet
occasionally to 11 feet.
.friday night...south winds 15 to 25 knots becoming west 10 to
20 knots after midnight. a chance of rain showers. waves
subsiding to 2 to 4 feet.
.saturday...west winds 5 to 15 knots. waves subsiding to calm to
2 feet.
.sunday...southeast winds 5 to 15 knots. waves calm to 2 feet.
$$
(6/10)
Latest Great Lakes Marine Forecast by KMQT
Issued 4/22/2026 10:01 AM America/New_York.
Valid through 4/22/2026 4:00 PM America/New_York.
fzus63 kmqt 221401
glfls
expires:202604222000;;800343
open lake forecast for lake superior
national weather service marquette mi
1000 am edt wed apr 22 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...
30.0 inch high pressure remains over lake superior today. meanwhile,
a 29.4 inch low over montana deepens to 29.1 inches by this evening
before moving into southern manitoba by thursday evening. this sends
29.6 in troughing over lake superior thursday night into friday. as
the parent low weakens to 29.9 inches saturday and remnant troughing
moves south of the lower great lakes at 29.7 inches, 30.0 inch
ridging will build over lake superior. by late sunday, this ridge
builds to 30.1 inches. meanwhile, a 29.3 inch colorado low develops,
moving towards the upper midwest by early monday, causing pressure
over lake superior to begin to fall rapidly toward 29.5 by mid-
monday.
lsz265-222000-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
1000 am edt wed apr 22 2026
.rest of today...southeast winds 5 to 15 knots increasing to
10 to 20 knots late. waves calm to 2 feet.
.tonight...southeast winds 10 to 20 knots. a slight chance of
rain showers after midnight. waves building to 1 to 3 feet.
.thursday...southeast winds 20 to 30 knots increasing to 30 knots
with a few gale force gusts to 35 knots possible late. waves
building to 5 to 8 feet occasionally to 10 feet.
.thursday night...southeast gales to 35 knots. a chance of rain
showers and a slight chance of thunderstorms. waves building to
7 to 10 feet occasionally to 13 feet.
.friday...southeast gales to 35 knots diminishing to 20 to
30 knots by mid afternoon. a chance of rain showers through early
afternoon. a slight chance of thunderstorms. rain showers likely
by mid afternoon. waves subsiding to 4 to 7 feet occasionally to
9 feet.
.friday night...southwest winds 15 to 25 knots. a chance of rain
showers. waves subsiding to 1 to 3 feet.
.saturday...west winds 10 to 20 knots becoming southwest 5 to
15 knots. waves subsiding to calm to 2 feet.
.sunday...east winds 5 to 15 knots becoming southeast 10 to
20 knots. waves building to 1 to 3 feet.
$$
(7/10)
Latest Great Lakes Marine Forecast by KMQT
Issued 4/22/2026 10:01 AM America/New_York.
Valid through 4/22/2026 4:00 PM America/New_York.
fzus63 kmqt 221401
glfls
expires:202604222000;;800344
open lake forecast for lake superior
national weather service marquette mi
1000 am edt wed apr 22 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...
30.0 inch high pressure remains over lake superior today. meanwhile,
a 29.4 inch low over montana deepens to 29.1 inches by this evening
before moving into southern manitoba by thursday evening. this sends
29.6 in troughing over lake superior thursday night into friday. as
the parent low weakens to 29.9 inches saturday and remnant troughing
moves south of the lower great lakes at 29.7 inches, 30.0 inch
ridging will build over lake superior. by late sunday, this ridge
builds to 30.1 inches. meanwhile, a 29.3 inch colorado low develops,
moving towards the upper midwest by early monday, causing pressure
over lake superior to begin to fall rapidly toward 29.5 by mid-
monday.
lsz266-222000-
lake superior east of a line from manitou island to marquette mi
and west of a line from grand marais mi to the us/canadian border
beyond 5nm from shore-
1000 am edt wed apr 22 2026
.rest of today...southeast winds 5 to 15 knots backing east late.
waves calm to 2 feet.
.tonight...southeast winds 10 to 20 knots increasing to 15 to
25 knots late. a slight chance of rain showers after midnight.
waves building to 2 to 4 feet.
.thursday...southeast winds 20 to 30 knots increasing to 30 knots
with a few gale force gusts to 35 knots possible late. waves
building to 6 to 9 feet occasionally to 11 feet.
.thursday night...southeast gales to 40 knots. a chance of rain
showers. waves building to 8 to 11 feet occasionally to 14 feet.
.friday...southeast gales to 40 knots. a chance of rain showers
through early afternoon, then rain showers likely and a slight
chance of thunderstorms by mid afternoon. waves subsiding to 5 to
8 feet occasionally to 10 feet.
.friday night...southeast winds 20 to 30 knots diminishing to
10 to 20 knots after midnight. a chance of rain showers. waves
subsiding to 2 to 4 feet.
.saturday...west winds 10 to 20 knots diminishing to 5 to
15 knots. waves subsiding to calm to 2 feet.
.sunday...east winds 5 to 15 knots becoming southeast 10 to
20 knots. waves building to 1 to 3 feet.
$$
(8/10)
Latest Great Lakes Marine Forecast by KMQT
Issued 4/22/2026 10:01 AM America/New_York.
Valid through 4/22/2026 4:00 PM America/New_York.
fzus63 kmqt 221401
glfls
expires:202604222000;;800345
open lake forecast for lake superior
national weather service marquette mi
1000 am edt wed apr 22 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...
30.0 inch high pressure remains over lake superior today. meanwhile,
a 29.4 inch low over montana deepens to 29.1 inches by this evening
before moving into southern manitoba by thursday evening. this sends
29.6 in troughing over lake superior thursday night into friday. as
the parent low weakens to 29.9 inches saturday and remnant troughing
moves south of the lower great lakes at 29.7 inches, 30.0 inch
ridging will build over lake superior. by late sunday, this ridge
builds to 30.1 inches. meanwhile, a 29.3 inch colorado low develops,
moving towards the upper midwest by early monday, causing pressure
over lake superior to begin to fall rapidly toward 29.5 by mid-
monday.
lsz267-222000-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
1000 am edt wed apr 22 2026
.rest of today...east winds 5 to 15 knots backing northeast in
the afternoon, then veering east late. waves calm to 2 feet.
.tonight...east winds 5 to 15 knots veering southeast after
midnight, then increasing to 10 to 20 knots late. waves building
to 1 to 3 feet.
.thursday...southeast winds 15 to 25 knots increasing to 20 to
30 knots in the afternoon. waves building to 4 to 7 feet
occasionally to 9 feet.
.thursday night...southeast gales to 40 knots. a slight chance of
rain showers after midnight. waves building to 6 to 9 feet
occasionally to 11 feet.
.friday...southeast gales to 35 knots. a chance of rain showers.
waves subsiding to 4 to 7 feet occasionally to 9 feet.
.friday night...southeast winds 20 to 30 knots diminishing to
15 to 25 knots after midnight. rain showers likely through
midnight, then a chance of rain showers after midnight. waves
subsiding to 1 to 3 feet.
.saturday...west winds 10 to 20 knots diminishing to 5 to
15 knots. waves subsiding to calm to 2 feet.
.sunday...east winds 5 to 15 knots veering southeast. waves calm
to 2 feet.
$$
(9/10)
Latest Great Lakes Marine Forecast by KMQT
Issued 4/22/2026 10:01 AM America/New_York.
Valid through 4/22/2026 4:00 PM America/New_York.
fzus63 kmqt 221401
glfls
expires:202604222000;;800340
open lake forecast for lake superior
national weather service marquette mi
1000 am edt wed apr 22 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...
30.0 inch high pressure remains over lake superior today. meanwhile,
a 29.4 inch low over montana deepens to 29.1 inches by this evening
before moving into southern manitoba by thursday evening. this sends
29.6 in troughing over lake superior thursday night into friday. as
the parent low weakens to 29.9 inches saturday and remnant troughing
moves south of the lower great lakes at 29.7 inches, 30.0 inch
ridging will build over lake superior. by late sunday, this ridge
builds to 30.1 inches. meanwhile, a 29.3 inch colorado low develops,
moving towards the upper midwest by early monday, causing pressure
over lake superior to begin to fall rapidly toward 29.5 by mid-
monday.
lsz162-222000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1000 am edt wed apr 22 2026 /900 am cdt wed apr 22 2026/
.rest of today...east winds 5 to 15 knots backing northeast in
the afternoon, then increasing to 10 to 20 knots late. waves calm
to 2 feet building to 1 to 3 feet.
.tonight...northeast winds 10 to 20 knots veering east late. a
slight chance of showers and thunderstorms. waves building to
3 to 5 feet occasionally to 7 feet, then subsiding to 2 to
4 feet.
.thursday...east winds 10 to 20 knots increasing to 15 to
25 knots in the afternoon, then backing northeast late. a chance
of rain showers and a slight chance of thunderstorms by mid
afternoon. waves subsiding to 2 to 4 feet, then building to 3 to
6 feet occasionally to 8 feet.
.thursday night...northeast winds 15 to 25 knots becoming east
10 to 20 knots after midnight. rain showers and a chance of
thunderstorms. waves building to 4 to 8 feet occasionally to
10 feet.
.friday...northeast winds 10 to 20 knots backing northwest by mid
afternoon. rain showers likely and a slight chance of
thunderstorms through early afternoon, then a chance of rain
showers by mid afternoon. waves subsiding to 3 to 5 feet
occasionally to 7 feet.
.friday night...northwest winds 10 to 20 knots. a chance of rain
showers. waves subsiding to calm to 2 feet.
.saturday...west winds 10 to 20 knots becoming northeast 5 to
15 knots. waves calm to 2 feet.
.sunday...east winds 5 to 15 knots increasing to 15 to 25 knots.
waves building to 2 to 4 feet.
$$
(10/10)
Latest Great Lakes Marine Forecast by KMQT
Issued 4/22/2026 10:01 AM America/New_York.
Valid through 4/22/2026 4:00 PM America/New_York.
fzus63 kmqt 221401
glfls
expires:202604222000;;800341
open lake forecast for lake superior
national weather service marquette mi
1000 am edt wed apr 22 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...
30.0 inch high pressure remains over lake superior today. meanwhile,
a 29.4 inch low over montana deepens to 29.1 inches by this evening
before moving into southern manitoba by thursday evening. this sends
29.6 in troughing over lake superior thursday night into friday. as
the parent low weakens to 29.9 inches saturday and remnant troughing
moves south of the lower great lakes at 29.7 inches, 30.0 inch
ridging will build over lake superior. by late sunday, this ridge
builds to 30.1 inches. meanwhile, a 29.3 inch colorado low develops,
moving towards the upper midwest by early monday, causing pressure
over lake superior to begin to fall rapidly toward 29.5 by mid-
monday.
lsz263-222000-
lake superior from saxon harbor wi to upper entrance to portage
canal mi 5nm off shore to the us/canadian border including isle
royale national park-
1000 am edt wed apr 22 2026
.rest of today...southeast winds less than 10 knots becoming east
5 to 15 knots in the afternoon, then becoming northeast 10 to
20 knots late. waves calm to 2 feet building to 1 to 3 feet.
.tonight...east winds 15 to 25 knots diminishing to 10 to
20 knots after midnight, then increasing to 15 to 25 knots late.
a chance of rain showers. a slight chance of thunderstorms after
midnight. waves building to 3 to 5 feet occasionally to 7 feet.
.thursday...east winds 15 to 25 knots increasing to 20 to
30 knots late. a slight chance of rain showers by mid afternoon.
waves building to 7 to 10 feet occasionally to 13 feet.
.thursday night...east gales to 35 knots. rain showers likely and
a chance of thunderstorms. waves building to 8 to 12 feet
occasionally to 15 feet.
.friday...east winds 20 to 30 knots becoming west 15 to 25 knots
by mid afternoon. a slight chance of thunderstorms through early
afternoon. rain showers likely. waves subsiding to 5 to 8 feet
occasionally to 10 feet.
.friday night...west winds 10 to 20 knots diminishing to 5 to
15 knots after midnight. a chance of rain showers. waves
subsiding to 1 to 3 feet.
.saturday...west winds 5 to 15 knots backing southeast. waves
subsiding to calm to 2 feet.
.sunday...east winds 5 to 15 knots. waves calm to 2 feet.
$$
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