fzus63 kdtx 160840
glflh 
expires:202512161645;;669752

open lake forecast for lake huron
national weather service detroit/pontiac mi
340 am est tue dec 16 2025

for waters beyond five nautical miles off shore on lake huron

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

.synopsis...weak high pressure, 30.20 inches will move across the
region early tuesday before a strong low, 29.10 inches, tracks
across northern ontario into the james bay late tuesday into
wednesday. gale warnings are in effect across the central and
northern portions of lake huron during this timeframe. a even
stronger system will affect the region thursday into friday.


lhz361-161645-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
340 am est tue dec 16 2025

...gale warning in effect from late tonight through wednesday
morning...

.today...south winds 10 to 15 knots increasing to 15 to 20 knots
in the late morning and afternoon. waves 1 to 3 feet building to
3 to 5 feet in the late morning and afternoon. 
.tonight...southwest winds 15 to 20 knots becoming west 20 to
25 knots after midnight. gusts to 35 knot gales. waves 5 to
7 feet building to 8 to 12 feet early in the morning. waves
occasionally around 15 feet. 
.wednesday...west winds to 30 knots with gusts to 35 knot gales
decreasing to 10 to 15 knots. waves 8 to 12 feet subsiding to
4 to 6 feet early in the afternoon. waves occasionally around
15 feet. 
.wednesday night...southwest winds 10 to 15 knots becoming south
20 to 25 knots. waves 2 to 4 feet building to 6 to 9 feet in the
late evening and overnight. waves occasionally around 12 feet. 
.thursday...south winds 20 to 25 knots decreasing to 15 to
20 knots late in the morning...then becoming west to 30 knots
late in the evening. rain. snow likely late in the afternoon.
waves 8 to 12 feet. waves occasionally around 15 feet. 
.friday...northwest winds to 30 knots decreasing to 15 to
20 knots in the late morning and early afternoon...then
decreasing to 10 to 15 knots early in the evening becoming
southeast 15 to 20 knots in the late evening and early morning. a
chance of snow. waves 8 to 12 feet subsiding to 3 to 5 feet until
early morning. waves occasionally around 15 feet. 
.saturday...south winds 20 to 25 knots decreasing to 15 to
20 knots in the late morning and early afternoon...then becoming
southwest 20 to 25 knots early in the evening becoming west to
30 knots in the late evening and early morning. a chance of snow.
waves 6 to 9 feet. waves occasionally around 12 feet. 


$$

fzus63 kdtx 160840
glflh 
expires:202512161645;;669753

open lake forecast for lake huron
national weather service detroit/pontiac mi
340 am est tue dec 16 2025

for waters beyond five nautical miles off shore on lake huron

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

.synopsis...weak high pressure, 30.20 inches will move across the
region early tuesday before a strong low, 29.10 inches, tracks
across northern ontario into the james bay late tuesday into
wednesday. gale warnings are in effect across the central and
northern portions of lake huron during this timeframe. a even
stronger system will affect the region thursday into friday.


lhz362-161645-
lake huron from presque isle light to sturgeon point mi beyond
5nm off shore-
340 am est tue dec 16 2025

...gale warning in effect from 3 pm est this afternoon through
wednesday morning...

.today...southwest winds 10 to 15 knots becoming south to
30 knots with gusts to 35 knot gales. waves 1 to 3 feet building
to 8 to 12 feet. waves occasionally around 15 feet. 
.tonight...southwest winds to 30 knots decreasing to 20 to
25 knots after midnight. gusts to 40 knot gales. waves 10 to
14 feet. waves occasionally around 18 feet. 
.wednesday...west winds to 30 knots with gusts to 35 knot gales
decreasing to 15 to 20 knots. waves 8 to 12 feet. waves
occasionally around 15 feet. 
.wednesday night...south winds 10 to 15 knots increasing to
35 knot gales. waves 3 to 5 feet building to 12 to 16 feet. waves
occasionally around 20 feet. a gale warning may be needed. 
.thursday...south at 35 knot gales decreasing to 30 knots late in
the morning...then decreasing to 20 to 25 knots late in the
afternoon becoming west at 35 knot gales late in the evening.
rain. snow likely late in the afternoon. waves 12 to 16 feet.
waves occasionally around 20 feet. 
.friday...west at 35 knot gales becoming northwest 20 to 25 knots
with gusts to around 30 knots in the late morning and early
afternoon...then decreasing to 15 to 20 knots early in the
evening becoming west 20 to 25 knots with gusts to around
30 knots in the late evening and early morning. a chance of snow.
waves 12 to 16 feet subsiding to 8 to 12 feet until early
morning. waves occasionally around 20 feet. 
.saturday...southwest winds to 30 knots. a chance of snow until
afternoon. waves 10 to 14 feet. waves occasionally around
18 feet. 


$$

fzus63 kdtx 160840
glflh 
expires:202512161645;;669754

open lake forecast for lake huron
national weather service detroit/pontiac mi
340 am est tue dec 16 2025

for waters beyond five nautical miles off shore on lake huron

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

.synopsis...weak high pressure, 30.20 inches will move across the
region early tuesday before a strong low, 29.10 inches, tracks
across northern ontario into the james bay late tuesday into
wednesday. gale warnings are in effect across the central and
northern portions of lake huron during this timeframe. a even
stronger system will affect the region thursday into friday.


lhz363-462-161645-
lake huron from sturgeon point to alabaster mi beyond 5nm off
shore-
lake huron from port austin to harbor beach beyond 5nm off shore-
340 am est tue dec 16 2025

...gale warning in effect from 3 pm est this afternoon through
late tonight...

.today...southwest winds 10 to 15 knots increasing to 30 knots
with gusts to 35 knot gales. waves 2 to 4 feet building to 8 to
12 feet. waves occasionally around 15 feet. 
.tonight...southwest winds to 30 knots decreasing to 20 to
25 knots early in the morning. gusts to 40 knot gales. waves
10 to 14 feet. waves occasionally around 18 feet. 
.wednesday...west winds 20 to 25 knots with gusts to around
30 knots decreasing to 10 to 15 knots. waves 6 to 9 feet. waves
occasionally around 12 feet. 
.wednesday night...southwest winds 10 to 15 knots becoming south
at 35 knot gales. waves 3 to 5 feet building to 8 to 12 feet in
the late evening and overnight. waves occasionally around
15 feet. a gale warning may be needed. 
.thursday...south at 35 knot gales decreasing to 30 knots late in
the afternoon...then becoming west at 35 knot gales late in the
evening. gusts to 40 knot gales. rain. a chance of snow late in
the afternoon. waves 12 to 16 feet. waves occasionally around
20 feet. 
.friday...west at 35 knot gales decreasing to 30 knots with gusts
to 35 knot gales in the late morning and early afternoon...then
becoming northwest 15 to 20 knots early in the evening becoming
west 20 to 25 knots with gusts to around 30 knots in the late
evening and early morning. a chance of snow early in the morning.
waves 10 to 14 feet subsiding to 8 to 12 feet in the late evening
and early morning. waves occasionally around 18 feet. 
.saturday...southwest winds to 30 knots. waves 8 to 12 feet.
waves occasionally around 15 feet. 


$$

fzus63 kmkx 160849
glflm 
expires:202512161700;;670156

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
249 am cst tue dec 16 2025

for waters beyond five nautical miles of shore on lake michigan.

waves are provided as a range of significant wave heights, which
is the average of the highest 1/3 of the wave, along with the
average height of the highest 10% of the waves which will
occasionally be encountered.

.synopsis...

light south to southwest winds are expected early this morning
before increasing ahead of an approaching strong low pressure 
around 29.0 inches. this low will move east from central manitoba
into northern ontario this morning, lifting northeast into quebec
through tonight. southwesterly gales to 40 kt are expected across
the northern third of the lake late this morning into tonight.
weaker gales (35 kt) may occur as far south as a wind point wi to
holland mi line, particularly over eastern portions of the lake. 
hence, the gale warning now includes all open waters north of this
line (northern three quarters of the lake), from 10 am cst this 
morning through 3 am cst wednesday morning. winds veer northwest 
late tonight as a cold front extending south of the low crosses 
the lake, diminishing behind the front.

another strong low pressure system is expected to track eastward 
along the canadian border wednesday into thursday. winds will turn
south and remain light in the middle of the day wednesday, rapidly
accelerating wednesday evening. 

strong south winds will develop ahead of the low wednesday night
(gales likely for most of the lake, strongest further north). a
cold front crosses the lake mid day thursday, with winds veering
northwest behind it. gales are likely behind this front as well,
and may last into friday morning before dissipating. 

a lull in the winds occurs friday afternoon, before a weaker
low pressure system follows in the prior system's tracks.
southerly gales are possible friday night. 


lmz261-362-364-563-161700-
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 rock island passage to sturgeon bay wi-
249 am cst tue dec 16 2025

sturgeon bay wi to point betsie mi north...

...gale warning in effect from 10 am cst this morning through
late tonight...

.today...southwest winds to 30 kt increasing to gales to 40 kt.
waves 3 to 5 ft building to 10 to 14 ft occasionally to 18 ft. 
.tonight...southwest gales to 40 kt becoming west gales to 35 kt
after midnight, then diminishing to 30 kt late. waves 10 to 14 ft
occasionally to 18 ft subsiding to 6 to 9 ft occasionally to
12 ft. 
.wednesday...northwest winds to 30 kt diminishing to 10 to 20 kt
late in the morning, then becoming west early in the afternoon
becoming southwest late. waves 4 to 7 ft occasionally to 9 ft
subsiding to 1 to 3 ft. 
.wednesday night...south gales to 40 kt increasing to gales to
45 kt. waves 10 to 14 ft occasionally to 18 ft building to 14 to
18 ft occasionally to 23 ft. 
.thursday...south gales to 40 kt becoming southwest to 30 kt in
the afternoon. rain in the morning, then rain and snow in the
afternoon. waves 14 to 18 ft occasionally to 23 ft subsiding to
10 to 14 ft occasionally to 18 ft. 
.thursday night...northwest gales to 40 kt. freezing spray.
chance of snow. waves 8 to 11 ft occasionally to 14 ft. 
.friday...northwest winds to 30 kt diminishing to 10 to 20 kt.
waves 5 to 8 ft occasionally to 10 ft subsiding to 2 to 4 ft.
south gales are possible friday night. 
.saturday...south winds to 30 kt becoming southwest. chance of
snow. waves 12 to 16 ft occasionally to 21 ft subsiding to 8 to
11 ft occasionally to 14 ft.  

$$

fzus63 kmkx 160849
glflm 
expires:202512161700;;670157

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
249 am cst tue dec 16 2025

for waters beyond five nautical miles of shore on lake michigan.

waves are provided as a range of significant wave heights, which
is the average of the highest 1/3 of the wave, along with the
average height of the highest 10% of the waves which will
occasionally be encountered.

.synopsis...

light south to southwest winds are expected early this morning
before increasing ahead of an approaching strong low pressure 
around 29.0 inches. this low will move east from central manitoba
into northern ontario this morning, lifting northeast into quebec
through tonight. southwesterly gales to 40 kt are expected across
the northern third of the lake late this morning into tonight.
weaker gales (35 kt) may occur as far south as a wind point wi to
holland mi line, particularly over eastern portions of the lake. 
hence, the gale warning now includes all open waters north of this
line (northern three quarters of the lake), from 10 am cst this 
morning through 3 am cst wednesday morning. winds veer northwest 
late tonight as a cold front extending south of the low crosses 
the lake, diminishing behind the front.

another strong low pressure system is expected to track eastward 
along the canadian border wednesday into thursday. winds will turn
south and remain light in the middle of the day wednesday, rapidly
accelerating wednesday evening. 

strong south winds will develop ahead of the low wednesday night
(gales likely for most of the lake, strongest further north). a
cold front crosses the lake mid day thursday, with winds veering
northwest behind it. gales are likely behind this front as well,
and may last into friday morning before dissipating. 

a lull in the winds occurs friday afternoon, before a weaker
low pressure system follows in the prior system's tracks.
southerly gales are possible friday night. 


lmz366-565-567-669-671-673-868-870-872-874-161700-
lake michigan from point betsie to manistee mi 5 nm offshore to
mid lake-
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 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 pentwater to manistee mi 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-
249 am cst tue dec 16 2025

sturgeon bay wi to point betsie mi south to wind point wi to
holland mi...

...gale warning in effect from 10 am cst this morning through
late tonight...

.today...south winds 15 to 25 kt becoming southwest gales to
35 kt. slight chance of rain this afternoon. waves 3 to 5 ft
building to 8 to 12 ft occasionally to 16 ft. 
.tonight...southwest gales to 35 kt becoming west to 30 kt. waves
8 to 12 ft occasionally to 16 ft subsiding to 6 to 9 ft
occasionally to 12 ft. 
.wednesday...northwest winds 15 to 25 kt diminishing to 10 to
20 kt late in the morning, then becoming west 10 to 15 kt early
in the afternoon becoming south 10 to 20 kt late. waves 5 to 8 ft
occasionally to 10 ft subsiding to 2 to 4 ft. 
.wednesday night...south gales to 40 kt. chance of rain
overnight. waves 10 to 14 ft occasionally to 18 ft building to
14 to 18 ft occasionally to 23 ft. 
.thursday...south gales to 35 kt becoming west gales to 40 kt.
rain in the morning, then rain and snow likely in the afternoon.
waves 14 to 18 ft occasionally to 23 ft subsiding to 12 to 16 ft
occasionally to 21 ft. 
.thursday night...northwest gales to 40 kt. freezing spray.
chance of snow. waves 12 to 16 ft occasionally to 21 ft. 
.friday...northwest gales to 35 kt becoming west 10 to 20 kt.
freezing spray. waves 10 to 14 ft occasionally to 18 ft subsiding
to 5 to 8 ft occasionally to 10 ft. south gales possible friday
night.
.saturday...southwest gales to 35 kt diminishing to 30 kt. waves
12 to 16 ft occasionally to 21 ft.  

$$

fzus63 kmqt 160900
glfls 
expires:202512162100;;670518

open lake forecast for lake superior
national weather service marquette mi
400 am est tue dec 16 2025

for waters beyond 5 nautical miles of shore on lake superior.

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

.synopsis...

a 29.2 inch low moving across the canadian prairies into northern 
ontario this morning brings troughing of 29.2 inches late this 
afternoon into this evening over northern lake superior as the low 
deepens to 28.9 inches near james bay. weak ridging of 29.9 inches 
then returns to lake superior on wednesday, before a 29.0 inch 
alberta clipper tracks from the canadian prairies to western lake 
superior wednesday into thursday morning (weakening to 29.2 inches 
as it does so). the low either crosses the lake or the u.p. and 
northern lake michigan on thursday. while the low lifts towards 
northern quebec thursday night, 30.0 inch ridging returns to lake 
superior on friday via a 30.2 inch high over the lower mississippi 
valley. another low pressure of around 29.5 inches tracks near the 
upper great lakes on saturday with ridging following late in the 
weekend.



lsz162-162100-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
400 am est tue dec 16 2025 /300 am cst tue dec 16 2025/

...gale warning in effect through late tonight...

.early this morning...southwest winds 20 to 30 knots. waves 3 to
6 feet occasionally to 8 feet. 
.today...southwest gales to 35 knots. waves building to 9 to
12 feet occasionally to 15 feet. 
.tonight...west gales to 40 knots diminishing to 20 to 30 knots
late. waves subsiding to 3 to 5 feet occasionally to 7 feet. 
.wednesday...west winds 10 to 20 knots backing southwest by late
morning, then becoming south 15 to 25 knots by mid afternoon.
waves subsiding to calm to 2 feet, then building to 2 to 4 feet. 
.wednesday night...south gales to 35 knots veering southwest
after midnight. snow showers likely, a chance of freezing drizzle
and a slight chance of drizzle in the evening. rain showers. a
slight chance of snow showers after midnight. waves building to
4 to 7 feet occasionally to 9 feet. 
.thursday...west gales to 40 knots veering north in the
afternoon. rain showers likely in the morning. snow showers.
freezing spray in the afternoon. waves subsiding to 3 to 6 feet
occasionally to 8 feet, then building to 8 to 11 feet
occasionally to 14 feet. 
.thursday night...north gales to 40 knots diminishing to 20 to
30 knots after midnight. heavy freezing spray in the evening.
waves subsiding to 3 to 5 feet occasionally to 7 feet. 
.friday...southeast winds 10 to 20 knots becoming south 20 to
30 knots. a chance of snow showers, then snow showers likely.
waves subsiding to 1 to 3 feet, then building to 3 to 6 feet
occasionally to 8 feet. 
.saturday...west winds 20 to 30 knots becoming northwest 15 to
25 knots. waves subsiding to 3 to 6 feet occasionally to 8 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 160900
glfls 
expires:202512162100;;670519

open lake forecast for lake superior
national weather service marquette mi
400 am est tue dec 16 2025

for waters beyond 5 nautical miles of shore on lake superior.

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

.synopsis...

a 29.2 inch low moving across the canadian prairies into northern 
ontario this morning brings troughing of 29.2 inches late this 
afternoon into this evening over northern lake superior as the low 
deepens to 28.9 inches near james bay. weak ridging of 29.9 inches 
then returns to lake superior on wednesday, before a 29.0 inch 
alberta clipper tracks from the canadian prairies to western lake 
superior wednesday into thursday morning (weakening to 29.2 inches 
as it does so). the low either crosses the lake or the u.p. and 
northern lake michigan on thursday. while the low lifts towards 
northern quebec thursday night, 30.0 inch ridging returns to lake 
superior on friday via a 30.2 inch high over the lower mississippi 
valley. another low pressure of around 29.5 inches tracks near the 
upper great lakes on saturday with ridging following late in the 
weekend.



lsz263-162100-
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 est tue dec 16 2025

...gale warning in effect through late tonight...

.early this morning...southwest winds 20 to 30 knots. waves 3 to
6 feet occasionally to 8 feet. 
.today...southwest gales to 40 knots. waves building to 10 to
14 feet occasionally to 18 feet. 
.tonight...west gales to 40 knots becoming northwest gales to
35 knots late. waves building to 11 to 15 feet occasionally to
19 feet, then subsiding to 5 to 8 feet occasionally to 10 feet. 
.wednesday...west winds 10 to 20 knots becoming southwest 15 to
25 knots by late morning, then backing south by mid afternoon.
waves subsiding to 2 to 4 feet, then building to 3 to 5 feet
occasionally to 7 feet. 
.wednesday night...south gales to 35 knots. a chance of freezing
drizzle, rain showers and a slight chance of drizzle in the
evening. a chance of snow showers. rain showers likely after
midnight. waves building to 4 to 8 feet occasionally to 10 feet. 
.thursday...southwest gales to 40 knots becoming north gales to
45 knots in the afternoon. snow showers likely. freezing spray in
the afternoon. waves subsiding to 3 to 6 feet occasionally to
8 feet, then building to 11 to 15 feet occasionally to 19 feet. 
.thursday night...north gales to 45 knots. heavy freezing spray.
a chance of snow showers. waves building to 12 to 17 feet
occasionally to 21 feet, then subsiding to 6 to 9 feet
occasionally to 11 feet. 
.friday...north winds 15 to 25 knots becoming south 20 to
30 knots. freezing spray. snow showers likely. waves subsiding to
1 to 3 feet, then building to 4 to 7 feet occasionally to 9 feet.
.saturday...west winds 20 to 30 knots veering northwest. freezing
spray. waves building to 5 to 8 feet occasionally to 10 feet,
then subsiding to 3 to 5 feet occasionally to 7 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 160900
glfls 
expires:202512162100;;670520

open lake forecast for lake superior
national weather service marquette mi
400 am est tue dec 16 2025

for waters beyond 5 nautical miles of shore on lake superior.

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

.synopsis...

a 29.2 inch low moving across the canadian prairies into northern 
ontario this morning brings troughing of 29.2 inches late this 
afternoon into this evening over northern lake superior as the low 
deepens to 28.9 inches near james bay. weak ridging of 29.9 inches 
then returns to lake superior on wednesday, before a 29.0 inch 
alberta clipper tracks from the canadian prairies to western lake 
superior wednesday into thursday morning (weakening to 29.2 inches 
as it does so). the low either crosses the lake or the u.p. and 
northern lake michigan on thursday. while the low lifts towards 
northern quebec thursday night, 30.0 inch ridging returns to lake 
superior on friday via a 30.2 inch high over the lower mississippi 
valley. another low pressure of around 29.5 inches tracks near the 
upper great lakes on saturday with ridging following late in the 
weekend.



lsz264-162100-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
400 am est tue dec 16 2025

...gale warning in effect through wednesday morning...

.early this morning...southwest winds 15 to 25 knots. waves 3 to
6 feet occasionally to 8 feet. 
.today...southwest winds 20 to 30 knots increasing to gales to
40 knots. waves building to 10 to 14 feet occasionally to
18 feet. 
.tonight...west gales to 40 knots veering northwest by midnight.
a slight chance of drizzle in the evening. a slight chance of
snow showers. a slight chance of freezing drizzle after midnight.
freezing spray after midnight. waves building to 12 to 17 feet
occasionally to 21 feet, then subsiding to 9 to 12 feet
occasionally to 15 feet. 
.wednesday...northwest winds 15 to 25 knots backing southwest by
mid afternoon. waves subsiding to 2 to 4 feet, then building to
3 to 5 feet occasionally to 7 feet. 
.wednesday night...south gales to 35 knots. a chance of snow
showers, freezing drizzle and a slight chance of drizzle in the
evening, then rain showers, possibly mixed with snow after
midnight. waves building to 9 to 12 feet occasionally to 15 feet,
then subsiding to 7 to 10 feet occasionally to 13 feet. 
.thursday...south gales to 40 knots becoming north gales to
45 knots in the afternoon. rain showers likely in the morning.
snow showers likely. freezing spray in the afternoon. waves
subsiding to 4 to 7 feet occasionally to 9 feet, then building to
12 to 17 feet occasionally to 21 feet. 
.thursday night...north gales to 45 knots. heavy freezing spray.
a chance of snow showers in the evening. snow showers likely
after midnight. waves subsiding to 9 to 12 feet occasionally to
15 feet. 
.friday...north winds 20 to 30 knots becoming south gales to
35 knots. freezing spray. snow showers likely. waves subsiding to
1 to 3 feet, then building to 7 to 10 feet occasionally to
13 feet. 
.saturday...west gales to 35 knots veering northwest. freezing
spray. waves subsiding to 5 to 8 feet occasionally to 10 feet,
then building to 7 to 10 feet occasionally to 13 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 160900
glfls 
expires:202512162100;;670521

open lake forecast for lake superior
national weather service marquette mi
400 am est tue dec 16 2025

for waters beyond 5 nautical miles of shore on lake superior.

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

.synopsis...

a 29.2 inch low moving across the canadian prairies into northern 
ontario this morning brings troughing of 29.2 inches late this 
afternoon into this evening over northern lake superior as the low 
deepens to 28.9 inches near james bay. weak ridging of 29.9 inches 
then returns to lake superior on wednesday, before a 29.0 inch 
alberta clipper tracks from the canadian prairies to western lake 
superior wednesday into thursday morning (weakening to 29.2 inches 
as it does so). the low either crosses the lake or the u.p. and 
northern lake michigan on thursday. while the low lifts towards 
northern quebec thursday night, 30.0 inch ridging returns to lake 
superior on friday via a 30.2 inch high over the lower mississippi 
valley. another low pressure of around 29.5 inches tracks near the 
upper great lakes on saturday with ridging following late in the 
weekend.



lsz265-162100-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
400 am est tue dec 16 2025

...gale warning in effect from 4 pm est this afternoon through
wednesday morning...

.early this morning...south winds 15 to 25 knots. waves 1 to
3 feet. 
.today...south winds 15 to 25 knots becoming southwest 20 to
30 knots by late morning, then increasing to gales to 35 knots by
mid afternoon. waves building to 5 to 8 feet occasionally to
10 feet. 
.tonight...west gales to 45 knots becoming northwest gales to
40 knots late. a slight chance of drizzle in the evening. a
slight chance of snow showers after midnight. waves building to
10 to 14 feet occasionally to 18 feet, then subsiding to 8 to
11 feet occasionally to 14 feet. 
.wednesday...northwest winds 20 to 30 knots becoming west 15 to
25 knots by late morning, then backing south by mid afternoon. a
slight chance of snow showers in the morning. waves subsiding to
1 to 3 feet, then building to 2 to 4 feet. 
.wednesday night...south gales to 40 knots. a chance of drizzle,
snow showers and freezing drizzle. a chance of rain showers after
midnight. waves building to 7 to 10 feet occasionally to 13 feet,
then subsiding to 5 to 8 feet occasionally to 10 feet. 
.thursday...south gales to 35 knots becoming north gales to
40 knots in the afternoon. rain showers likely in the morning,
then snow showers in the afternoon. waves subsiding to 1 to
3 feet, then building to 10 to 14 feet occasionally to 18 feet. 
.thursday night...north gales to 45 knots. freezing spray. snow
showers. waves building to 12 to 17 feet occasionally to 21 feet,
then subsiding to 10 to 14 feet occasionally to 18 feet. 
.friday...north winds 20 to 30 knots becoming south gales to
35 knots. freezing spray. a chance of snow showers. snow showers
likely. waves subsiding to 2 to 4 feet, then building to 5 to
8 feet occasionally to 10 feet. 
.saturday...west gales to 35 knots. a chance of snow showers.
freezing spray. waves building to 5 to 8 feet occasionally to
10 feet, then subsiding to 3 to 6 feet occasionally to 8 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 160900
glfls 
expires:202512162100;;670522

open lake forecast for lake superior
national weather service marquette mi
400 am est tue dec 16 2025

for waters beyond 5 nautical miles of shore on lake superior.

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

.synopsis...

a 29.2 inch low moving across the canadian prairies into northern 
ontario this morning brings troughing of 29.2 inches late this 
afternoon into this evening over northern lake superior as the low 
deepens to 28.9 inches near james bay. weak ridging of 29.9 inches 
then returns to lake superior on wednesday, before a 29.0 inch 
alberta clipper tracks from the canadian prairies to western lake 
superior wednesday into thursday morning (weakening to 29.2 inches 
as it does so). the low either crosses the lake or the u.p. and 
northern lake michigan on thursday. while the low lifts towards 
northern quebec thursday night, 30.0 inch ridging returns to lake 
superior on friday via a 30.2 inch high over the lower mississippi 
valley. another low pressure of around 29.5 inches tracks near the 
upper great lakes on saturday with ridging following late in the 
weekend.



lsz266-162100-
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 est tue dec 16 2025

...gale warning in effect from 10 am est this morning through
wednesday morning...

.early this morning...south winds 15 to 25 knots. waves 2 to
4 feet. 
.today...south gales to 35 knots veering southwest by mid
afternoon. waves building to 10 to 14 feet occasionally to
18 feet. 
.tonight...west gales to 45 knots veering northwest late. a
chance of drizzle. a chance of snow showers after midnight. waves
building to 15 to 20 feet occasionally to 25 feet. 
.wednesday...northwest gales to 35 knots becoming west 15 to
25 knots by late morning, then becoming south 20 to 30 knots by
mid afternoon. a slight chance of snow showers in the morning.
waves subsiding to 3 to 6 feet occasionally to 8 feet. 
.wednesday night...south gales to 40 knots. a chance of snow
showers, freezing drizzle and a slight chance of drizzle in the
evening, then drizzle, snow showers likely, possibly mixed with
rain showers and freezing drizzle after midnight. waves building
to 10 to 14 feet occasionally to 18 feet, then subsiding to 9 to
12 feet occasionally to 15 feet. 
.thursday...south winds 20 to 30 knots becoming north gales to
45 knots in the afternoon. rain showers. snow showers in the
afternoon. waves subsiding to 3 to 6 feet occasionally to 8 feet,
then building to 11 to 15 feet occasionally to 19 feet. 
.thursday night...north gales to 45 knots. heavy freezing spray.
snow showers. waves building to 15 to 20 feet occasionally to
25 feet, then subsiding to 11 to 15 feet occasionally to 19 feet.
.friday...north winds 20 to 30 knots becoming south gales to
40 knots. freezing spray. a chance of snow showers. snow showers
likely. waves subsiding to 2 to 4 feet, then building to 8 to
11 feet occasionally to 14 feet. 
.saturday...southwest gales to 35 knots veering northwest. a
chance of snow showers. freezing spray. waves subsiding to 6 to
9 feet occasionally to 11 feet, then building to 9 to 12 feet
occasionally to 15 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 160900
glfls 
expires:202512162100;;670523

open lake forecast for lake superior
national weather service marquette mi
400 am est tue dec 16 2025

for waters beyond 5 nautical miles of shore on lake superior.

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

.synopsis...

a 29.2 inch low moving across the canadian prairies into northern 
ontario this morning brings troughing of 29.2 inches late this 
afternoon into this evening over northern lake superior as the low 
deepens to 28.9 inches near james bay. weak ridging of 29.9 inches 
then returns to lake superior on wednesday, before a 29.0 inch 
alberta clipper tracks from the canadian prairies to western lake 
superior wednesday into thursday morning (weakening to 29.2 inches 
as it does so). the low either crosses the lake or the u.p. and 
northern lake michigan on thursday. while the low lifts towards 
northern quebec thursday night, 30.0 inch ridging returns to lake 
superior on friday via a 30.2 inch high over the lower mississippi 
valley. another low pressure of around 29.5 inches tracks near the 
upper great lakes on saturday with ridging following late in the 
weekend.



lsz267-162100-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
400 am est tue dec 16 2025

...gale warning in effect from 10 am est this morning through
wednesday morning...

.early this morning...southwest winds 15 to 25 knots. waves 2 to
4 feet. 
.today...south gales to 40 knots veering southwest by mid
afternoon. a slight chance of snow showers in the morning. a
slight chance of drizzle in the afternoon. waves building to 8 to
12 feet occasionally to 15 feet. 
.tonight...southwest gales to 35 knots becoming northwest gales
to 45 knots late. a chance of drizzle. a chance of snow showers
after midnight. waves subsiding to 7 to 10 feet occasionally to
13 feet, then building to 15 to 20 feet occasionally to 25 feet. 
.wednesday...northwest gales to 35 knots becoming west 15 to
25 knots by late morning, then backing south by mid afternoon. a
slight chance of snow showers in the morning. waves subsiding to
3 to 5 feet occasionally to 7 feet. 
.wednesday night...south gales to 40 knots. a chance of freezing
drizzle and snow showers in the evening. a chance of drizzle.
rain and snow showers likely after midnight. waves building to
7 to 10 feet occasionally to 13 feet. 
.thursday...south winds 20 to 30 knots. rain showers. snow
showers in the afternoon. waves subsiding to 3 to 5 feet
occasionally to 7 feet. 
.thursday night...north gales to 40 knots. freezing spray. snow
showers. waves building to 10 to 14 feet occasionally to 18 feet,
then subsiding to 9 to 12 feet occasionally to 15 feet. 
.friday...north winds 20 to 30 knots becoming south gales to
35 knots. freezing spray. a chance of snow showers. snow showers.
waves subsiding to 1 to 3 feet, then building to 5 to 8 feet
occasionally to 10 feet. 
.saturday...south winds 20 to 30 knots veering northwest. snow
showers likely, then a chance of snow showers. freezing spray.
waves building to 9 to 12 feet occasionally to 15 feet, then
subsiding to 7 to 10 feet occasionally to 13 feet. 

note, wave height forecasts are for ice free areas.

$$