fzus63 kdtx 301931
glflh 
expires:202603310345;;553152

open lake forecast for lake huron
national weather service detroit/pontiac mi
331 pm edt mon mar 30 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 front stalls around central lake huron today with
southwest wind over southern lower mi and the south half of lake
huron. wind turns from the ne across central and northern lake
huron. showers and thunderstorms develop along and near this
frontal zone tonight and tuesday, with potential for strong to
severe storms as a strong cold front sweeps across the great
lakes tuesday night. marine conditions turn colder and remain
unsettled mid to late week.


lhz361-310345-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
331 pm edt mon mar 30 2026

.tonight...northeast winds 5 to 10 knots becoming east 15 to
20 knots. a chance of showers. waves 2 feet or less building to
2 to 4 feet after midnight. 
.tuesday...east winds 15 to 20 knots decreasing to 10 to 15 knots
in the afternoon. a chance of showers. waves 3 to 5 feet. 
.tuesday night...northeast winds 10 to 15 knots becoming north
15 to 20 knots after midnight. waves 2 to 4 feet. 
.wednesday...north winds 15 to 20 knots becoming northeast 5 to
10 knots. waves 3 to 5 feet subsiding to 1 to 3 feet early in the
afternoon. 
.wednesday night...northeast winds 5 to 10 knots becoming east
20 to 25 knots with gusts to around 30 knots. a chance of snow
showers after midnight. waves 2 feet or less building to 6 to
9 feet. waves occasionally around 12 feet. 
.thursday...east winds to 30 knots decreasing to 20 to 25 knots
late in the evening. gusts to 35 knot gales. snow showers likely.
showers and freezing rain. snow may be heavy at times in the
morning. waves 8 to 12 feet. waves occasionally around 15 feet. 
.friday...east winds 15 to 20 knots veering to the west in the
late morning and early afternoon...then becoming northwest 10 to
15 knots early in the evening becoming north 15 to 20 knots by
midnight. showers likely early in the morning. waves 8 to 12 feet
subsiding to 3 to 5 feet. waves occasionally around 15 feet. 
.saturday...east winds 15 to 20 knots increasing to 20 to
25 knots in the late morning and early afternoon...then
decreasing to 15 to 20 knots . a chance of rain and snow showers
early in the morning. showers likely. waves 5 to 7 feet. waves
occasionally around 10 feet. 

wave heights are for ice free areas.

$$

fzus63 kdtx 301931
glflh 
expires:202603310345;;553153

open lake forecast for lake huron
national weather service detroit/pontiac mi
331 pm edt mon mar 30 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 front stalls around central lake huron today with
southwest wind over southern lower mi and the south half of lake
huron. wind turns from the ne across central and northern lake
huron. showers and thunderstorms develop along and near this
frontal zone tonight and tuesday, with potential for strong to
severe storms as a strong cold front sweeps across the great
lakes tuesday night. marine conditions turn colder and remain
unsettled mid to late week.


lhz362-363-310345-
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-
331 pm edt mon mar 30 2026

.tonight...northeast winds 5 to 10 knots increasing to 10 to
15 knots in the late evening and overnight. a chance of showers
and thunderstorms in the evening...then showers likely and a
chance of thunderstorms after midnight. waves 1 to 3 feet
building to 3 to 5 feet after midnight. 
.tuesday...northeast winds 10 to 15 knots. a chance of showers in
the morning...then showers likely in the afternoon. waves 3 to
5 feet. 
.tuesday night...north winds 10 to 15 knots increasing to 15 to
20 knots in the late evening and overnight. showers likely in the
evening. waves 3 to 5 feet building to 5 to 7 feet after
midnight. waves occasionally around 10 feet. 
.wednesday...north winds 15 to 20 knots decreasing to 10 to
15 knots early in the afternoon. waves 4 to 6 feet. 
.wednesday night...northeast winds 10 to 15 knots increasing to
20 to 25 knots with gusts to around 30 knots. a chance of snow
showers after midnight. waves 4 to 6 feet building to 6 to 9 feet
after midnight. waves occasionally around 12 feet. 
.thursday...east winds 20 to 25 knots. gusts to 35 knot gales. a
chance of snow showers in the morning. showers. waves 8 to
12 feet. waves occasionally around 15 feet. 
.friday...southeast winds 15 to 20 knots veering to the southwest
in the late morning and early afternoon...then veering to the
west early in the evening veering to the north by midnight.
showers likely early in the morning. waves 6 to 9 feet subsiding
to 4 to 6 feet . waves occasionally around 12 feet. 
.saturday...east winds 15 to 20 knots veering to the southeast by
midnight. a chance of showers early in the morning. showers
likely. waves 5 to 7 feet. waves occasionally around 10 feet. 


$$

fzus63 kdtx 301931
glflh 
expires:202603310345;;553154

open lake forecast for lake huron
national weather service detroit/pontiac mi
331 pm edt mon mar 30 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 front stalls around central lake huron today with
southwest wind over southern lower mi and the south half of lake
huron. wind turns from the ne across central and northern lake
huron. showers and thunderstorms develop along and near this
frontal zone tonight and tuesday, with potential for strong to
severe storms as a strong cold front sweeps across the great
lakes tuesday night. marine conditions turn colder and remain
unsettled mid to late week.


lhz462>464-310345-
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-
331 pm edt mon mar 30 2026

.tonight...east winds 5 to 10 knots. a chance of showers and
thunderstorms in the evening...then showers and a chance of
thunderstorms after midnight. waves 1 to 3 feet. 
.tuesday...north winds 5 to 10 knots veering to the northeast
late in the morning...then increasing to 10 to 15 knots early in
the afternoon veering to the east late in the afternoon. showers
and a chance of thunderstorms in the morning...then showers
likely and a chance of thunderstorms in the afternoon. waves 1 to
3 feet building to 2 to 4 feet in the afternoon. 
.tuesday night...southwest winds 10 to 15 knots becoming
northwest 15 to 20 knots in the late evening and overnight. a
chance of showers in the evening. waves 2 to 4 feet building to
4 to 6 feet after midnight. waves occasionally around 8 feet. 
.wednesday...north winds 15 to 20 knots. waves 5 to 7 feet. waves
occasionally around 10 feet. 
.wednesday night...northeast winds 15 to 20 knots. a chance of
rain and snow showers after midnight. waves 5 to 7 feet. waves
occasionally around 10 feet. 
.thursday...east winds 15 to 20 knots veering to the south late
in the evening. showers. a chance of thunderstorms late in the
afternoon. waves 5 to 7 feet. waves occasionally around 10 feet. 
.friday...southwest winds 15 to 20 knots becoming northwest 10 to
15 knots early in the evening...then veering to the north by
midnight. showers early in the morning...then a chance of
showers. waves 4 to 6 feet. waves occasionally around 8 feet. 
.saturday...northeast winds 10 to 15 knots becoming east 15 to
20 knots in the late morning and early afternoon...then veering
to the south . a chance of showers early in the morning...then
showers likely. waves 4 to 6 feet. waves occasionally around
8 feet. 


$$

fzus63 kmkx 302005
glflm 
expires:202603310330;;554152

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
305 pm cdt mon mar 30 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...

a frontal zone will sharpen over lake michigan today, with north
to northeasterly flow over northern portions of the lake and
southerly flow further south. the boundary between these two wind
patterns has setup along a sheboygan wi to manistee mi line 
early this afternoon, but should sag south to a milwaukee wi to
whitehall mi line into this evening (approximately), with both 
wind flows becoming stronger far north and far south of the 
boundary. some 20 to 30 kt gusts may occur over the northern and
southern thirds of the lake this evening into tonight as the 
boundary sharpens. rounds of showers and thunderstorms are 
expected tonight into tuesday across the lake, with a few 
stronger storms possible at times (particularly near the 
frontal boundary). large hail would be the primary threat with 
any stronger storms. 

the boundary sags further south as a cold front tuesday 
afternoon, focusing lingering shower and thunderstorm activity 
over southern lake mi before washing it away later tuesday. 
gusty north winds build in behind the front tuesday evening into
wednesday, with 20 to 30 kt gusts. winds veer northeasterly
through wednesday. 

30.7 inch high pressure will shift from ontario to quebec through
the late week time period as 29.7 inch low pressure approaches 
from the southwest, allowing winds to trend east-northeasterly. 
will need to watch for gale potential later this week
(particularly thursday) as the low pressure system approaches
the lake. 


lmz080-669-671-673-675-777-779-870-872-874-876-878-310330-
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-
305 pm cdt mon mar 30 2026

sheboygan wi to pentwater mi south...

.tonight...a frontal boundary drifts southward, with light and 
variable winds along it, and southwest winds 20 to 30 kt well to 
the south of it. chance of thunderstorms this evening through
tonight, with a few strong to severe storms possible. waves 2 to 
4 ft building to 4 to 6 ft occasionally to 8 ft. 
.tuesday...southwest winds to 30 kt veering to west 15 to 25 kt.
chance of rain showers and thunderstorms in the morning, then
rain showers with a chance of thunderstorms in the afternoon.
waves 4 to 6 ft occasionally to 8 ft. 
.tuesday night...north winds to 30 kt. chance of rain showers.
waves 4 to 6 ft occasionally to 8 ft building to 5 to 8 ft
occasionally to 10 ft. 
.wednesday...northeast winds to 30 kt. chance of rain. waves 6 to
9 ft occasionally to 12 ft. 
.wednesday night...northeast winds to 30 kt becoming east. rain
and snow likely in the evening, then rain and snow overnight.
waves 7 to 10 ft occasionally to 13 ft. 
.thursday...east winds to 30 kt. rain. waves 7 to 10 ft
occasionally to 13 ft. 
.thursday night...south winds 15 to 25 kt becoming southwest.
chance of rain. waves 7 to 10 ft occasionally to 13 ft subsiding
to 6 to 9 ft occasionally to 12 ft. 
.friday...west winds 10 to 20 kt veering to north. waves 5 to
8 ft occasionally to 10 ft subsiding to 3 to 5 ft. 
.saturday...southeast winds 15 to 25 kt becoming southwest. rain
likely. waves 4 to 6 ft occasionally to 8 ft building to 5 to
8 ft occasionally to 10 ft.  

$$

fzus63 kmkx 302005
glflm 
expires:202603310330;;554151

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
305 pm cdt mon mar 30 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...

a frontal zone will sharpen over lake michigan today, with north
to northeasterly flow over northern portions of the lake and
southerly flow further south. the boundary between these two wind
patterns has setup along a sheboygan wi to manistee mi line 
early this afternoon, but should sag south to a milwaukee wi to
whitehall mi line into this evening (approximately), with both 
wind flows becoming stronger far north and far south of the 
boundary. some 20 to 30 kt gusts may occur over the northern and
southern thirds of the lake this evening into tonight as the 
boundary sharpens. rounds of showers and thunderstorms are 
expected tonight into tuesday across the lake, with a few 
stronger storms possible at times (particularly near the 
frontal boundary). large hail would be the primary threat with 
any stronger storms. 

the boundary sags further south as a cold front tuesday 
afternoon, focusing lingering shower and thunderstorm activity 
over southern lake mi before washing it away later tuesday. 
gusty north winds build in behind the front tuesday evening into
wednesday, with 20 to 30 kt gusts. winds veer northeasterly
through wednesday. 

30.7 inch high pressure will shift from ontario to quebec through
the late week time period as 29.7 inch low pressure approaches 
from the southwest, allowing winds to trend east-northeasterly. 
will need to watch for gale potential later this week
(particularly thursday) as the low pressure system approaches
the lake. 


lmz261-362-364-366-563-565-567-868-310330-
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-
305 pm cdt mon mar 30 2026

sheboygan wi to pentwater mi north...

.tonight...northeast winds 15 to 25 kt. chance of rain showers
and thunderstorms. waves 2 to 4 ft building to 3 to 5 ft. 
.tuesday...northeast winds to 30 kt becoming north 15 to 25 kt.
chance of rain showers and slight chance of thunderstorms. waves
2 to 4 ft. 
.tuesday night...north winds to 30 kt diminishing to 15 to 25 kt.
waves 4 to 7 ft occasionally to 9 ft. 
.wednesday...north winds 15 to 25 kt becoming northeast to 30 kt.
waves 5 to 8 ft occasionally to 10 ft. 
.wednesday night...northeast winds to 30 kt becoming east. chance
of snow and rain in the evening, then chance of snow overnight.
waves 6 to 9 ft occasionally to 12 ft. 
.thursday...east gales to 35 kt becoming northeast. snow and rain
in the morning, then rain and freezing rain in the afternoon. 
waves 7 to 10 ft occasionally to 13 ft. 
.thursday night...east gales to 35 kt veering to west to 30 kt.
rain and freezing rain. waves 7 to 10 ft occasionally to 13 ft. 
.friday...west winds 15 to 25 kt becoming north 10 to 20 kt.
waves 4 to 7 ft occasionally to 9 ft subsiding to 3 to 5 ft. 
.saturday...east winds 15 to 25 kt. rain and freezing rain
likely. waves 4 to 6 ft occasionally to 8 ft building to 4 to
7 ft occasionally to 9 ft.  

$$

fzus63 kmqt 301956
glfls 
expires:202603310800;;553686

open lake forecast for lake superior
national weather service marquette mi
356 pm edt mon mar 30 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...

this morning, lake superior is between a 29.8 inch low over quebec, 
a 29.7 inch low over the central plains, a broad 30.2 inch high over 
the canadian prairie, and a 30.5 inch high off the east coast. 
tonight, as the quebec low and east coast high shift east, the 
canadian high shifts over far northern ontario. meanwhile, the 
plains low extends a weakening 29.7 inch trough over lake michigan 
and the lower peninsula. this trough lingers in place through 
tuesday before consolidating into a 29.8 inch low over the lower 
great lakes tuesday night while the canadian high builds to 30.4 
inches and extends a 30.3 inch ridge over north dakota. the ridge 
then builds along with the parent high to 30.5 inches extending from 
lake superior to james bay wednesday while the low departs to the 
east. by thursday morning, the high builds to 30.8 inches while a 
29.5 inch low develops over the central plains. this low passes just 
south of lake superior at 29.7 inches overnight into friday morning 
while another low of 29.6 inches develops over the oklahoma 
panhandle. this low approaches the bay of green bay saturday 
afternoon, tracking over eastern lake superior at near 29.4 inches 
by sunday morning.



lsz264-310800-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
356 pm edt mon mar 30 2026

.late this afternoon...northeast winds 10 to 20 knots. a slight
chance of snow showers. waves 1 to 3 feet building to 2 to
4 feet. 
.tonight...northeast winds 10 to 20 knots becoming east 15 to
25 knots late. a chance of snow showers. waves building to 3 to
6 feet occasionally to 8 feet. 
.tuesday...east winds 15 to 25 knots becoming northeast 10 to
20 knots late. snow showers likely through early afternoon, then
a chance of snow showers by mid afternoon. waves building to 4 to
7 feet occasionally to 9 feet, then subsiding to 3 to 5 feet
occasionally to 7 feet. 
.tuesday night...northeast winds 10 to 20 knots diminishing to
5 to 15 knots late. a slight chance of snow showers through
midnight. waves subsiding to 2 to 4 feet. 
.wednesday...northeast winds 10 to 20 knots becoming east 5 to
15 knots by mid afternoon. waves subsiding to calm to 2 feet. 
.wednesday night...east winds 10 to 20 knots increasing to 20 to
30 knots after midnight. waves building to 3 to 6 feet
occasionally to 8 feet. 
.thursday...east gales to 35 knots. snow showers likely by mid
afternoon. waves building to 8 to 11 feet occasionally to
14 feet. 
.thursday night...northeast gales to 35 knots diminishing to
20 to 30 knots after midnight. snow showers. waves building to
9 to 12 feet occasionally to 15 feet, then subsiding to 7 to
10 feet occasionally to 13 feet. 
.friday...northeast winds 15 to 25 knots veering east. a chance
of snow showers. waves subsiding to 3 to 6 feet occasionally to
8 feet, then building to 5 to 8 feet occasionally to 10 feet. 
.saturday...east winds 20 to 30 knots becoming north 15 to
25 knots. snow showers likely. a chance of snow showers. waves
5 to 8 feet occasionally to 10 feet. 

$$

fzus63 kmqt 301956
glfls 
expires:202603310800;;553687

open lake forecast for lake superior
national weather service marquette mi
356 pm edt mon mar 30 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...

this morning, lake superior is between a 29.8 inch low over quebec, 
a 29.7 inch low over the central plains, a broad 30.2 inch high over 
the canadian prairie, and a 30.5 inch high off the east coast. 
tonight, as the quebec low and east coast high shift east, the 
canadian high shifts over far northern ontario. meanwhile, the 
plains low extends a weakening 29.7 inch trough over lake michigan 
and the lower peninsula. this trough lingers in place through 
tuesday before consolidating into a 29.8 inch low over the lower 
great lakes tuesday night while the canadian high builds to 30.4 
inches and extends a 30.3 inch ridge over north dakota. the ridge 
then builds along with the parent high to 30.5 inches extending from 
lake superior to james bay wednesday while the low departs to the 
east. by thursday morning, the high builds to 30.8 inches while a 
29.5 inch low develops over the central plains. this low passes just 
south of lake superior at 29.7 inches overnight into friday morning 
while another low of 29.6 inches develops over the oklahoma 
panhandle. this low approaches the bay of green bay saturday 
afternoon, tracking over eastern lake superior at near 29.4 inches 
by sunday morning.



lsz265-310800-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
356 pm edt mon mar 30 2026

.late this afternoon...northeast winds 10 to 20 knots. waves calm
to 2 feet. 
.tonight...northeast winds 15 to 25 knots veering east after
midnight. a slight chance of sleet through midnight. a chance of
snow showers, possibly mixed with rain. a chance of freezing rain
after midnight. waves building to 3 to 6 feet occasionally to
8 feet. 
.tuesday...east winds 20 to 30 knots diminishing to 15 to
25 knots in the afternoon, then becoming northeast 10 to 20 knots
late. snow showers likely through early afternoon, then a chance
of snow showers by mid afternoon. waves building to 4 to 7 feet
occasionally to 9 feet, then subsiding to 3 to 5 feet
occasionally to 7 feet. 
.tuesday night...north winds 10 to 20 knots veering northeast
late. a slight chance of snow showers. waves subsiding to 2 to
4 feet. 
.wednesday...northeast winds 15 to 25 knots becoming east 10 to
20 knots by mid afternoon. waves building to 3 to 5 feet
occasionally to 7 feet, then subsiding to 1 to 3 feet. 
.wednesday night...east winds 15 to 25 knots increasing to 20 to
30 knots after midnight. waves building to 4 to 7 feet
occasionally to 9 feet. 
.thursday...east gales to 40 knots. freezing spray. a chance of
snow showers through early afternoon. snow showers likely by mid
afternoon. waves building to 10 to 14 feet occasionally to
18 feet. 
.thursday night...east gales to 35 knots backing northeast after
midnight. snow showers. waves subsiding to 7 to 10 feet
occasionally to 13 feet. 
.friday...north winds 20 to 30 knots veering east. a chance of
snow showers. waves subsiding to 3 to 6 feet occasionally to
8 feet, then building to 5 to 8 feet occasionally to 10 feet. 
.saturday...east gales to 35 knots backing north. rain showers,
possibly mixed with freezing rain. snow showers likely. waves
building to 5 to 9 feet occasionally to 11 feet. 

$$

fzus63 kmqt 301956
glfls 
expires:202603310800;;553688

open lake forecast for lake superior
national weather service marquette mi
356 pm edt mon mar 30 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...

this morning, lake superior is between a 29.8 inch low over quebec, 
a 29.7 inch low over the central plains, a broad 30.2 inch high over 
the canadian prairie, and a 30.5 inch high off the east coast. 
tonight, as the quebec low and east coast high shift east, the 
canadian high shifts over far northern ontario. meanwhile, the 
plains low extends a weakening 29.7 inch trough over lake michigan 
and the lower peninsula. this trough lingers in place through 
tuesday before consolidating into a 29.8 inch low over the lower 
great lakes tuesday night while the canadian high builds to 30.4 
inches and extends a 30.3 inch ridge over north dakota. the ridge 
then builds along with the parent high to 30.5 inches extending from 
lake superior to james bay wednesday while the low departs to the 
east. by thursday morning, the high builds to 30.8 inches while a 
29.5 inch low develops over the central plains. this low passes just 
south of lake superior at 29.7 inches overnight into friday morning 
while another low of 29.6 inches develops over the oklahoma 
panhandle. this low approaches the bay of green bay saturday 
afternoon, tracking over eastern lake superior at near 29.4 inches 
by sunday morning.



lsz266-310800-
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-
356 pm edt mon mar 30 2026

.late this afternoon...northeast winds 10 to 20 knots. a slight
chance of snow showers. waves calm to 2 feet building to 1 to
3 feet. 
.tonight...northeast winds 10 to 20 knots becoming east 15 to
25 knots after midnight. a slight chance of rain and snow
showers. waves building to 3 to 6 feet occasionally to 8 feet. 
.tuesday...east winds 15 to 25 knots backing northeast late. snow
showers likely through early afternoon, then a chance of snow
showers by mid afternoon. waves building to 4 to 7 feet
occasionally to 9 feet, then subsiding to 3 to 5 feet
occasionally to 7 feet. 
.tuesday night...northeast winds 15 to 25 knots. a slight chance
of snow showers through midnight. waves subsiding to 2 to 4 feet.
.wednesday...northeast winds 15 to 25 knots diminishing to 10 to
20 knots by mid afternoon. waves building to 3 to 5 feet
occasionally to 7 feet, then subsiding to 1 to 3 feet. 
.wednesday night...east winds 15 to 25 knots increasing to 20 to
30 knots after midnight. waves building to 4 to 7 feet
occasionally to 9 feet. 
.thursday...east gales to 40 knots. freezing spray through early
afternoon. a chance of snow showers through early afternoon, then
snow showers likely by mid afternoon. waves building to 10 to
14 feet occasionally to 18 feet. 
.thursday night...east gales to 35 knots becoming northeast 20 to
30 knots after midnight. snow showers. rain showers likely after
midnight. waves subsiding to 7 to 10 feet occasionally to
13 feet. 
.friday...north winds 20 to 30 knots veering east. a chance of
snow showers, possibly mixed with rain. a chance of freezing
rain. waves subsiding to 3 to 6 feet occasionally to 8 feet, then
building to 5 to 8 feet occasionally to 10 feet. 
.saturday...east winds 20 to 30 knots backing north. snow
showers, possibly mixed with freezing rain. rain showers likely.
a chance of snow showers. waves building to 5 to 9 feet
occasionally to 11 feet. 

$$

fzus63 kmqt 301956
glfls 
expires:202603310800;;553689

open lake forecast for lake superior
national weather service marquette mi
356 pm edt mon mar 30 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...

this morning, lake superior is between a 29.8 inch low over quebec, 
a 29.7 inch low over the central plains, a broad 30.2 inch high over 
the canadian prairie, and a 30.5 inch high off the east coast. 
tonight, as the quebec low and east coast high shift east, the 
canadian high shifts over far northern ontario. meanwhile, the 
plains low extends a weakening 29.7 inch trough over lake michigan 
and the lower peninsula. this trough lingers in place through 
tuesday before consolidating into a 29.8 inch low over the lower 
great lakes tuesday night while the canadian high builds to 30.4 
inches and extends a 30.3 inch ridge over north dakota. the ridge 
then builds along with the parent high to 30.5 inches extending from 
lake superior to james bay wednesday while the low departs to the 
east. by thursday morning, the high builds to 30.8 inches while a 
29.5 inch low develops over the central plains. this low passes just 
south of lake superior at 29.7 inches overnight into friday morning 
while another low of 29.6 inches develops over the oklahoma 
panhandle. this low approaches the bay of green bay saturday 
afternoon, tracking over eastern lake superior at near 29.4 inches 
by sunday morning.



lsz267-310800-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
356 pm edt mon mar 30 2026

.late this afternoon...northeast winds 10 to 20 knots. a slight
chance of rain showers. waves calm to 2 feet. 
.tonight...northeast winds 10 to 20 knots becoming east 15 to
25 knots after midnight. a chance of rain showers, possibly mixed
with snow. waves building to 3 to 5 feet occasionally to 7 feet. 
.tuesday...east winds 15 to 25 knots backing northeast late. a
chance of snow showers through early afternoon. a slight chance
of rain showers. snow showers likely, possibly mixed with sleet
by mid afternoon. waves building to 3 to 6 feet occasionally to
8 feet, then subsiding to 2 to 4 feet. 
.tuesday night...northeast winds 10 to 20 knots increasing to
15 to 25 knots after midnight. a slight chance of snow showers
through midnight. waves subsiding to 1 to 3 feet, then building
to 2 to 4 feet. 
.wednesday...northeast winds 10 to 20 knots. waves subsiding to
calm to 2 feet. 
.wednesday night...east winds 10 to 20 knots increasing to 15 to
25 knots after midnight. waves building to 3 to 6 feet
occasionally to 8 feet. 
.thursday...east gales to 40 knots. freezing spray through early
afternoon. a chance of snow showers through early afternoon, then
snow showers by mid afternoon. waves building to 5 to 8 feet
occasionally to 10 feet. 
.thursday night...east gales to 35 knots becoming northeast 20 to
30 knots after midnight. rain and snow showers, possibly mixed
with freezing rain. waves building to 6 to 9 feet occasionally to
11 feet, then subsiding to 4 to 7 feet occasionally to 9 feet. 
.friday...north winds 15 to 25 knots veering east. a chance of
rain and snow showers. a chance of freezing rain. waves subsiding
to 3 to 6 feet occasionally to 8 feet. 
.saturday...east winds 20 to 30 knots backing north. snow
showers, possibly mixed with freezing rain. rain showers likely.
a chance of snow showers. waves building to 5 to 8 feet
occasionally to 10 feet. 

$$

fzus63 kmqt 301956
glfls 
expires:202603310800;;553684

open lake forecast for lake superior
national weather service marquette mi
356 pm edt mon mar 30 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...

this morning, lake superior is between a 29.8 inch low over quebec, 
a 29.7 inch low over the central plains, a broad 30.2 inch high over 
the canadian prairie, and a 30.5 inch high off the east coast. 
tonight, as the quebec low and east coast high shift east, the 
canadian high shifts over far northern ontario. meanwhile, the 
plains low extends a weakening 29.7 inch trough over lake michigan 
and the lower peninsula. this trough lingers in place through 
tuesday before consolidating into a 29.8 inch low over the lower 
great lakes tuesday night while the canadian high builds to 30.4 
inches and extends a 30.3 inch ridge over north dakota. the ridge 
then builds along with the parent high to 30.5 inches extending from 
lake superior to james bay wednesday while the low departs to the 
east. by thursday morning, the high builds to 30.8 inches while a 
29.5 inch low develops over the central plains. this low passes just 
south of lake superior at 29.7 inches overnight into friday morning 
while another low of 29.6 inches develops over the oklahoma 
panhandle. this low approaches the bay of green bay saturday 
afternoon, tracking over eastern lake superior at near 29.4 inches 
by sunday morning.



lsz162-310800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
356 pm edt mon mar 30 2026 /256 pm cdt mon mar 30 2026/

.late this afternoon...northeast winds 20 to 30 knots. waves 3 to
6 feet occasionally to 8 feet. 
.tonight...northeast winds 20 to 30 knots diminishing to 15 to
25 knots late. a slight chance of snow showers through midnight.
a chance of rain showers. snow showers likely after midnight.
waves building to 4 to 7 feet occasionally to 9 feet. 
.tuesday...northeast winds 15 to 25 knots diminishing to 10 to
20 knots late. a chance of snow showers, possibly mixed with
rain. waves subsiding to 3 to 5 feet occasionally to 7 feet. 
.tuesday night...northeast winds 10 to 20 knots. a slight chance
of snow showers through midnight. waves subsiding to 1 to 3 feet.
.wednesday...east winds 10 to 20 knots increasing to 15 to
25 knots by mid afternoon. waves building to 3 to 5 feet
occasionally to 7 feet. 
.wednesday night...east winds 15 to 25 knots increasing to 20 to
30 knots after midnight. waves building to 5 to 8 feet
occasionally to 10 feet. 
.thursday...east gales to 35 knots becoming northeast gales to
45 knots by mid afternoon. a chance of snow showers through early
afternoon, then snow showers likely by mid afternoon. waves
building to 10 to 14 feet occasionally to 18 feet. 
.thursday night...northeast gales to 35 knots diminishing to
20 to 30 knots after midnight. snow showers. waves subsiding to
7 to 10 feet occasionally to 13 feet. 
.friday...northeast winds 15 to 25 knots becoming east 20 to
30 knots. a chance of snow showers. waves subsiding to 4 to
7 feet occasionally to 9 feet, then building to 6 to 9 feet
occasionally to 11 feet. 
.saturday...northeast winds 20 to 30 knots becoming north 15 to
25 knots. snow showers likely. a chance of snow showers. waves
subsiding to 3 to 6 feet occasionally to 8 feet. 

$$

fzus63 kmqt 301956
glfls 
expires:202603310800;;553685

open lake forecast for lake superior
national weather service marquette mi
356 pm edt mon mar 30 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...

this morning, lake superior is between a 29.8 inch low over quebec, 
a 29.7 inch low over the central plains, a broad 30.2 inch high over 
the canadian prairie, and a 30.5 inch high off the east coast. 
tonight, as the quebec low and east coast high shift east, the 
canadian high shifts over far northern ontario. meanwhile, the 
plains low extends a weakening 29.7 inch trough over lake michigan 
and the lower peninsula. this trough lingers in place through 
tuesday before consolidating into a 29.8 inch low over the lower 
great lakes tuesday night while the canadian high builds to 30.4 
inches and extends a 30.3 inch ridge over north dakota. the ridge 
then builds along with the parent high to 30.5 inches extending from 
lake superior to james bay wednesday while the low departs to the 
east. by thursday morning, the high builds to 30.8 inches while a 
29.5 inch low develops over the central plains. this low passes just 
south of lake superior at 29.7 inches overnight into friday morning 
while another low of 29.6 inches develops over the oklahoma 
panhandle. this low approaches the bay of green bay saturday 
afternoon, tracking over eastern lake superior at near 29.4 inches 
by sunday morning.



lsz263-310800-
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-
356 pm edt mon mar 30 2026

.late this afternoon...northeast winds 15 to 25 knots. a slight
chance of snow showers. waves 3 to 6 feet occasionally to 8 feet.
.tonight...northeast winds 20 to 30 knots diminishing to 15 to
25 knots after midnight. a chance of snow showers, possibly mixed
with rain. waves building to 4 to 7 feet occasionally to 9 feet,
then subsiding to 3 to 6 feet occasionally to 8 feet. 
.tuesday...east winds 15 to 25 knots backing northeast in the
afternoon, then diminishing to 10 to 20 knots late. a chance of
snow showers, possibly mixed with rain. waves subsiding to 3 to
5 feet occasionally to 7 feet. 
.tuesday night...northeast winds 5 to 15 knots. a slight chance
of snow showers through midnight. waves subsiding to 2 to 4 feet.
.wednesday...northeast winds 5 to 15 knots becoming east 10 to
20 knots by mid afternoon. waves subsiding to 1 to 3 feet, then
building to 2 to 4 feet. 
.wednesday night...east winds 10 to 20 knots increasing to 15 to
25 knots after midnight. waves building to 3 to 6 feet
occasionally to 8 feet. 
.thursday...east gales to 40 knots. a chance of snow showers
through early afternoon, then snow showers likely by mid
afternoon. waves building to 10 to 14 feet occasionally to
18 feet. 
.thursday night...northeast gales to 35 knots diminishing to
20 to 30 knots after midnight. snow showers. waves subsiding to
7 to 10 feet occasionally to 13 feet. 
.friday...northeast winds 15 to 25 knots veering east. a chance
of snow showers. waves subsiding to 4 to 7 feet occasionally to
9 feet, then building to 6 to 9 feet occasionally to 11 feet. 
.saturday...northeast winds 15 to 25 knots backing north. snow
showers likely. a chance of snow showers. waves subsiding to 5 to
8 feet occasionally to 10 feet. 

$$