fzus63 kdtx 150742
glflh 
expires:202610151545;;126707

open lake forecast for lake huron
national weather service detroit/pontiac mi
342 am edt thu oct 15 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...high pressure, 30.30 inches, passes across the
northern great lakes this morning. low pressure is forecast to
strengthen to 29.60 inches as it tracks across the central great
lakes thursday night and early friday. a strong cold front in its
wake brings likely northerly gales late friday.


lhz361-362-151545-
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-
342 am edt thu oct 15 2026

...gale warning in effect from friday afternoon through late
friday night...

.today...east winds 10 to 15 knots. waves 1 to 3 feet building to
2 to 4 feet in the afternoon. 
.tonight...southeast winds 10 to 15 knots backing to the
northeast early in the morning. rain. waves 2 to 4 feet. 
.friday...northeast winds 10 to 15 knots becoming north 15 to
20 knots with gusts to around 30 knots in the late morning and
early afternoon...then increasing to 30 knots with gusts to
35 knot gales early in the afternoon. a chance of rain. waves
2 to 4 feet building to 6 to 9 feet in the late morning and
afternoon. waves occasionally around 12 feet. 
.friday night...north 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. 
.saturday...northwest winds 10 to 15 knots backing to the west
with gusts to around 30 knots late in the morning...then becoming
southwest 15 to 20 knots with gusts to around 30 knots late in
the afternoon. waves 3 to 5 feet. 
.sunday...southwest winds 15 to 20 knots with gusts to 35 knot
gales. waves 4 to 6 feet building to 6 to 9 feet. waves
occasionally around 12 feet. 
.monday...southwest winds 10 to 15 knots becoming light and
variable. waves 3 to 5 feet subsiding to 2 feet or less . 


$$

fzus63 kdtx 150742
glflh 
expires:202610151545;;126708

open lake forecast for lake huron
national weather service detroit/pontiac mi
342 am edt thu oct 15 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...high pressure, 30.30 inches, passes across the
northern great lakes this morning. low pressure is forecast to
strengthen to 29.60 inches as it tracks across the central great
lakes thursday night and early friday. a strong cold front in its
wake brings likely northerly gales late friday.


lhz363-462>464-151545-
lake huron from sturgeon point to alabaster mi beyond 5nm off
shore-
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-
342 am edt thu oct 15 2026

...gale warning in effect from friday afternoon through late
friday night...

.today...east winds 10 to 15 knots decreasing to 5 to 10 knots
late in the afternoon. waves 1 to 3 feet. 
.tonight...east winds 10 to 15 knots becoming southeast 15 to
20 knots by midnight...then becoming east 10 to 15 knots early in
the morning. rain. waves 1 to 3 feet building to 3 to 5 feet in
the late evening and overnight. 
.friday...west winds 15 to 20 knots increasing to 20 to 25 knots
with gusts to around 30 knots in the late morning and early
afternoon...then becoming north to 30 knots with gusts to 35 knot
gales early in the afternoon. a chance of rain. waves 3 to 5 feet
building to 10 to 14 feet. waves occasionally around 18 feet. 
.friday night...north winds to 30 knots decreasing to 20 to
25 knots after midnight. gusts to 35 knot gales. a chance of
rain. waves 10 to 14 feet. waves occasionally around 18 feet. 
.saturday...north winds 15 to 20 knots becoming northwest 10 to
15 knots late in the morning...then becoming southwest 15 to
20 knots late in the afternoon. waves 8 to 12 feet subsiding to
4 to 6 feet. waves occasionally around 15 feet. 
.sunday...southwest winds 20 to 25 knots with gusts to 35 knot
gales. waves 6 to 9 feet. waves occasionally around 12 feet. 
.monday...southwest winds 15 to 20 knots decreasing to 5 to
10 knots. waves 5 to 7 feet subsiding to 1 to 3 feet. waves
occasionally around 10 feet. 


$$

fzus63 kmkx 150736
glflm 
expires:202610151530;;126509

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
236 am cdt thu oct 15 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...

winds will gradually become easterly tonight as high pressure 
around 30.3 inches slides through the region. the stronger winds 
are expected across the southern half of the lake during this 
time. two areas of low pressure are progged to merge over the 
great lakes region into a single low pressure tonight and deepen 
to around 29.5 inches as it shifts into the eastern great lakes 
through friday. expect a northwesterly wind shift to ramp up and 
increase to gales and nearing storm force at times on the backside
of the departing low pressure while a strong high pressure around
30.7 inches builds to the west. a gale warning is now in effect for
all of the open waters of lake michigan friday morning into 
friday night. 

widespread rain is expected this afternoon into
tonight, with a few thunderstorms possible over the southern open
waters. lake effect showers & thundershowers may linger into
friday along the back side of departing low pressure. a few
waterspouts are possible in the friday showers/thundershowers,
particularly over the southern half of lake michigan.  

as the high sinks toward the ohio river valley on saturday, strong low
pressure around 29.1 inches will develop in northern manitoba. the
tight pressure gradient may bring southwest gales to lake 
michigan on sunday.


lmz261-362-364-366-563-565-567-868-151530-
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-
236 am cdt thu oct 15 2026

sheboygan wi to pentwater mi north...

...gale warning in effect from friday morning through late friday
night...

.today...southeast winds 10 to 15 kt increasing to 10 to 20 kt.
showers this afternoon. waves 3 to 5 ft. 
.tonight...east winds 10 to 20 kt diminishing to 10 to 15 kt late
in the evening, then becoming northeast 10 to 20 kt after
midnight becoming north to 30 kt late. showers in the evening,
then chance of showers overnight. waves 3 to 5 ft building to
4 to 7 ft occasionally to 9 ft. 
.friday...north winds to 30 kt increasing to gales to 45 kt.
chance of showers. waves 6 to 9 ft occasionally to 12 ft building
to 12 to 16 ft occasionally to 21 ft. 
.friday night...north gales to 40 kt diminishing to 30 kt
overnight. waves 12 to 16 ft occasionally to 21 ft subsiding to
8 to 12 ft occasionally to 16 ft. 
.saturday...west winds 15 to 25 kt becoming southwest to 30 kt.
waves 4 to 6 ft occasionally to 8 ft. 
.saturday night...southwest winds to 30 kt increasing to gales to
35 kt. waves 5 to 8 ft occasionally to 10 ft building to 7 to
10 ft occasionally to 13 ft. 
.sunday...southwest gales to 40 kt. waves 8 to 12 ft occasionally
to 16 ft. 
.monday...southwest winds 15 to 25 kt diminishing to 10 to 20 kt.
waves 4 to 7 ft occasionally to 9 ft subsiding to 3 to 5 ft.  

$$

fzus63 kmkx 150736
glflm 
expires:202610151530;;126510

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
236 am cdt thu oct 15 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...

winds will gradually become easterly tonight as high pressure 
around 30.3 inches slides through the region. the stronger winds 
are expected across the southern half of the lake during this 
time. two areas of low pressure are progged to merge over the 
great lakes region into a single low pressure tonight and deepen 
to around 29.5 inches as it shifts into the eastern great lakes 
through friday. expect a northwesterly wind shift to ramp up and 
increase to gales and nearing storm force at times on the backside
of the departing low pressure while a strong high pressure around
30.7 inches builds to the west. a gale warning is now in effect for
all of the open waters of lake michigan friday morning into 
friday night. 

widespread rain is expected this afternoon into
tonight, with a few thunderstorms possible over the southern open
waters. lake effect showers & thundershowers may linger into
friday along the back side of departing low pressure. a few
waterspouts are possible in the friday showers/thundershowers,
particularly over the southern half of lake michigan.  

as the high sinks toward the ohio river valley on saturday, strong low
pressure around 29.1 inches will develop in northern manitoba. the
tight pressure gradient may bring southwest gales to lake 
michigan on sunday.


lmz080-669-671-673-675-777-779-870-872-874-876-878-151530-
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-
236 am cdt thu oct 15 2026

sheboygan wi to pentwater mi south...

...gale warning in effect from friday morning through late friday
night...

.today...east winds 10 to 20 kt becoming southeast 15 to 25 kt.
showers this afternoon. waves 4 to 7 ft occasionally to 9 ft. 
.tonight...southeast winds 10 to 20 kt increasing to 15 to 25 kt
late in the evening, then veering to northwest to 30 kt
overnight. showers in the evening, then slight chance of showers
overnight. waves 4 to 6 ft occasionally to 8 ft building to 7 to
10 ft occasionally to 13 ft. 
.friday...northwest winds to 30 kt increasing to gales to 35 kt
late in the morning, then becoming north gales to 40 kt early in
the afternoon increasing to gales to 45 kt late. chance of
showers in the morning, then showers in the afternoon. waves 8 to
11 ft occasionally to 14 ft building to 14 to 18 ft occasionally
to 23 ft. 
.friday night...north gales to 45 kt diminishing to 30 kt
overnight. chance of rain showers in the evening. waves 15 to
20 ft occasionally to 26 ft subsiding to 12 to 16 ft occasionally
to 21 ft. 
.saturday...north winds 10 to 20 kt backing to southwest 15 to
25 kt. waves 7 to 10 ft occasionally to 13 ft subsiding to 4 to
6 ft occasionally to 8 ft. 
.saturday night...southwest winds 15 to 25 kt increasing to
30 kt. waves 6 to 9 ft occasionally to 12 ft. 
.sunday...southwest winds to 30 kt increasing to gales to 40 kt.
waves 8 to 11 ft occasionally to 14 ft building to 8 to 12 ft
occasionally to 16 ft. 
.monday...southwest winds 10 to 20 kt. waves 4 to 6 ft
occasionally to 8 ft subsiding to 3 to 5 ft.  

$$

fzus63 kmqt 150801
glfls 
expires:202610152000;;127081

open lake forecast for lake superior
national weather service marquette mi
401 am edt thu oct 15 2026

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

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

.synopsis...

a 30.2 inch high pressure centered over central ontario continues to 
moves east into quebec by this afternoon. meanwhile, a 29.9 inch low 
is moving into manitoba, and another 29.9 inch low is developing 
over the southern plains. this afternoon, the lows begin to converge 
over the upper midwest, consolidating into a 29.8 inch low near 
chicago this evening and moving northeast into the lp tonight. in 
its wake, a 30.9 inch high builds over wyoming, weakening to 30.6 
inches friday as it expands over the plains while the low deepens to 
29.5 inches and heads towards new england. the high slides south of 
the great lakes at 30.4 inches by saturday night as a 29.4 inch 
alberta clipper moves into saskatchewan. sunday, the high builds 
back to 30.5 inches over the delmarva peninsula as the clipper moves 
into manitoba. ridging recovers over the great lakes monday.




lsz162-152000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
401 am edt thu oct 15 2026 /301 am cdt thu oct 15 2026/

...gale warning in effect from late tonight through friday
afternoon...

.early this morning...southeast winds 5 to 15 knots. waves calm
to 2 feet. 
.today...southeast winds 5 to 15 knots veering southwest late. a
chance of showers through early afternoon, then showers by mid
afternoon. waves calm to 2 feet. 
.tonight...west winds 5 to 15 knots becoming northwest 15 to
25 knots after midnight, then becoming north gales to 40 knots
late. a chance of showers. waves building to 4 to 7 feet
occasionally to 9 feet. 
.friday...north gales to 40 knots diminishing to 20 to 30 knots
late. waves building to 8 to 11 feet occasionally to 14 feet,
then subsiding to 3 to 5 feet occasionally to 7 feet. 
.friday night...northwest winds 10 to 20 knots becoming southwest
20 to 30 knots after midnight. waves subsiding to calm to 2 feet,
then building to 3 to 5 feet occasionally to 7 feet. 
.saturday...southwest gales to 35 knots. waves building to 8 to
11 feet occasionally to 14 feet, then subsiding to 6 to 9 feet
occasionally to 11 feet. 
.saturday night...southwest gales to 40 knots. waves building to
8 to 11 feet occasionally to 14 feet. 
.sunday...southwest gales to 40 knots becoming west 20 to
30 knots. waves building to 9 to 12 feet occasionally to 15 feet,
then subsiding to calm to 2 feet. 
.monday...west winds 5 to 15 knots veering north. waves calm to
2 feet. 

$$

fzus63 kmqt 150801
glfls 
expires:202610152000;;127082

open lake forecast for lake superior
national weather service marquette mi
401 am edt thu oct 15 2026

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

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

.synopsis...

a 30.2 inch high pressure centered over central ontario continues to 
moves east into quebec by this afternoon. meanwhile, a 29.9 inch low 
is moving into manitoba, and another 29.9 inch low is developing 
over the southern plains. this afternoon, the lows begin to converge 
over the upper midwest, consolidating into a 29.8 inch low near 
chicago this evening and moving northeast into the lp tonight. in 
its wake, a 30.9 inch high builds over wyoming, weakening to 30.6 
inches friday as it expands over the plains while the low deepens to 
29.5 inches and heads towards new england. the high slides south of 
the great lakes at 30.4 inches by saturday night as a 29.4 inch 
alberta clipper moves into saskatchewan. sunday, the high builds 
back to 30.5 inches over the delmarva peninsula as the clipper moves 
into manitoba. ridging recovers over the great lakes monday.




lsz263-152000-
lake superior from saxon harbor wi to upper entrance to portage
canal mi 5nm off shore to the us/canadian border including isle
royale national park-
401 am edt thu oct 15 2026

...gale warning in effect from late tonight through friday
afternoon...

.early this morning...southeast winds 5 to 15 knots. waves calm
to 2 feet. 
.today...south winds 5 to 15 knots. a chance of showers through
early afternoon, then showers by mid afternoon. waves calm to
2 feet. 
.tonight...west winds 10 to 20 knots becoming north 15 to
25 knots after midnight, then increasing to gales to 40 knots
late. showers through midnight, then a chance of showers after
midnight. waves building to 6 to 9 feet occasionally to 11 feet. 
.friday...north gales to 40 knots diminishing to 20 to 30 knots
late. a slight chance of rain showers through early afternoon.
waves building to 10 to 14 feet occasionally to 18 feet, then
subsiding to 4 to 7 feet occasionally to 9 feet. 
.friday night...northwest winds 15 to 25 knots becoming west
20 to 30 knots after midnight. waves subsiding to 1 to 3 feet,
then building to 3 to 6 feet occasionally to 8 feet. 
.saturday...southwest gales to 40 knots. waves building to 9 to
12 feet occasionally to 15 feet, then subsiding to 7 to 10 feet
occasionally to 13 feet. 
.saturday night...southwest gales to 45 knots. waves building to
10 to 14 feet occasionally to 18 feet. 
.sunday...southwest storm force winds to 50 knots becoming west
gales to 35 knots. waves subsiding to 1 to 3 feet. 
.monday...west winds 5 to 15 knots. waves subsiding to calm to
2 feet. 

$$

fzus63 kmqt 150801
glfls 
expires:202610152000;;127083

open lake forecast for lake superior
national weather service marquette mi
401 am edt thu oct 15 2026

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

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

.synopsis...

a 30.2 inch high pressure centered over central ontario continues to 
moves east into quebec by this afternoon. meanwhile, a 29.9 inch low 
is moving into manitoba, and another 29.9 inch low is developing 
over the southern plains. this afternoon, the lows begin to converge 
over the upper midwest, consolidating into a 29.8 inch low near 
chicago this evening and moving northeast into the lp tonight. in 
its wake, a 30.9 inch high builds over wyoming, weakening to 30.6 
inches friday as it expands over the plains while the low deepens to 
29.5 inches and heads towards new england. the high slides south of 
the great lakes at 30.4 inches by saturday night as a 29.4 inch 
alberta clipper moves into saskatchewan. sunday, the high builds 
back to 30.5 inches over the delmarva peninsula as the clipper moves 
into manitoba. ridging recovers over the great lakes monday.




lsz264-152000-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
401 am edt thu oct 15 2026

...gale warning in effect from late tonight through friday
afternoon...

.early this morning...southeast winds 5 to 15 knots. waves calm
to 2 feet. 
.today...south winds 5 to 15 knots. a slight chance of showers
through early afternoon, then showers by mid afternoon. waves
calm to 2 feet. 
.tonight...south winds 5 to 15 knots becoming north 15 to
25 knots after midnight, then increasing to gales to 40 knots
late. showers. waves building to 6 to 9 feet occasionally to
11 feet. 
.friday...north gales to 45 knots. a slight chance of rain
showers through early afternoon. waves building to 10 to 14 feet
occasionally to 18 feet, then subsiding to 6 to 9 feet
occasionally to 11 feet. 
.friday night...northwest winds 20 to 30 knots backing west after
midnight. waves subsiding to 1 to 3 feet, then building to 3 to
5 feet occasionally to 7 feet. 
.saturday...west gales to 35 knots becoming southwest gales to
40 knots by mid afternoon. waves building to 9 to 12 feet
occasionally to 15 feet, then subsiding to 7 to 10 feet
occasionally to 13 feet. 
.saturday night...southwest gales to 40 knots. waves subsiding to
5 to 8 feet occasionally to 10 feet, then building to 9 to
12 feet occasionally to 15 feet. 
.sunday...southwest gales to 45 knots becoming west gales to
35 knots. waves building to 10 to 14 feet occasionally to
18 feet, then subsiding to 2 to 4 feet. 
.monday...west winds 5 to 15 knots. waves subsiding to calm to
2 feet. 

$$

fzus63 kmqt 150801
glfls 
expires:202610152000;;127084

open lake forecast for lake superior
national weather service marquette mi
401 am edt thu oct 15 2026

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

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

.synopsis...

a 30.2 inch high pressure centered over central ontario continues to 
moves east into quebec by this afternoon. meanwhile, a 29.9 inch low 
is moving into manitoba, and another 29.9 inch low is developing 
over the southern plains. this afternoon, the lows begin to converge 
over the upper midwest, consolidating into a 29.8 inch low near 
chicago this evening and moving northeast into the lp tonight. in 
its wake, a 30.9 inch high builds over wyoming, weakening to 30.6 
inches friday as it expands over the plains while the low deepens to 
29.5 inches and heads towards new england. the high slides south of 
the great lakes at 30.4 inches by saturday night as a 29.4 inch 
alberta clipper moves into saskatchewan. sunday, the high builds 
back to 30.5 inches over the delmarva peninsula as the clipper moves 
into manitoba. ridging recovers over the great lakes monday.




lsz265-152000-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
401 am edt thu oct 15 2026

...gale warning in effect from friday morning through friday
evening...

.early this morning...southeast winds 10 to 20 knots. waves calm
to 2 feet. 
.today...south winds 10 to 20 knots backing southeast late. a
slight chance of showers through early afternoon, then showers by
mid afternoon. waves calm to 2 feet. 
.tonight...south winds 10 to 20 knots backing north after
midnight, then increasing to gales to 35 knots late. showers.
waves building to 4 to 7 feet occasionally to 9 feet. 
.friday...north gales to 45 knots with a few storm force gusts to
55 knots possible diminishing to gales to 45 knots late. a chance
of showers through early afternoon. waves building to 12 to
17 feet occasionally to 21 feet, then subsiding to 10 to 14 feet
occasionally to 18 feet. 
.friday night...northwest gales to 35 knots becoming west 15 to
25 knots after midnight. waves subsiding to 1 to 3 feet, then
building to 2 to 4 feet. 
.saturday...west gales to 35 knots diminishing to 20 to 30 knots
by mid afternoon. waves building to 4 to 7 feet occasionally to
9 feet, then subsiding to 2 to 4 feet. 
.saturday night...southwest winds 20 to 30 knots increasing to
gales to 35 knots after midnight. waves subsiding to 1 to 3 feet,
then building to 3 to 5 feet occasionally to 7 feet. 
.sunday...southwest gales to 40 knots becoming west 20 to
30 knots. waves building to 3 to 6 feet occasionally to 8 feet,
then subsiding to calm to 2 feet. 
.monday...west winds 5 to 15 knots. waves calm to 2 feet. 

$$

fzus63 kmqt 150801
glfls 
expires:202610152000;;127085

open lake forecast for lake superior
national weather service marquette mi
401 am edt thu oct 15 2026

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

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

.synopsis...

a 30.2 inch high pressure centered over central ontario continues to 
moves east into quebec by this afternoon. meanwhile, a 29.9 inch low 
is moving into manitoba, and another 29.9 inch low is developing 
over the southern plains. this afternoon, the lows begin to converge 
over the upper midwest, consolidating into a 29.8 inch low near 
chicago this evening and moving northeast into the lp tonight. in 
its wake, a 30.9 inch high builds over wyoming, weakening to 30.6 
inches friday as it expands over the plains while the low deepens to 
29.5 inches and heads towards new england. the high slides south of 
the great lakes at 30.4 inches by saturday night as a 29.4 inch 
alberta clipper moves into saskatchewan. sunday, the high builds 
back to 30.5 inches over the delmarva peninsula as the clipper moves 
into manitoba. ridging recovers over the great lakes monday.




lsz266-152000-
lake superior east of a line from manitou island to marquette mi
and west of a line from grand marais mi to the us/canadian border
beyond 5nm from shore-
401 am edt thu oct 15 2026

...gale warning in effect from friday morning through friday
evening...

.early this morning...southeast winds 5 to 15 knots. waves calm
to 2 feet. 
.today...south winds 10 to 20 knots backing southeast late.
showers by mid afternoon. waves building to 1 to 3 feet. 
.tonight...southeast winds 5 to 15 knots becoming northeast 10 to
20 knots after midnight, then becoming north gales to 35 knots
late. showers. waves subsiding to calm to 2 feet, then building
to 3 to 6 feet occasionally to 8 feet. 
.friday...north gales to 45 knots increasing to gales to 45 knots
with a few storm force gusts to 55 knots possible in the
afternoon, then diminishing to gales to 45 knots late. a chance
of showers through early afternoon. waves building to 15 to
20 feet occasionally to 25 feet, then subsiding to 12 to 17 feet
occasionally to 21 feet. 
.friday night...north gales to 35 knots becoming west 15 to
25 knots after midnight. a slight chance of rain showers through
midnight. waves subsiding to 2 to 4 feet. 
.saturday...west gales to 35 knots. waves building to 7 to
11 feet occasionally to 14 feet. 
.saturday night...southwest winds 15 to 25 knots increasing to
20 to 30 knots after midnight. waves subsiding to 4 to 7 feet
occasionally to 9 feet, then building to 6 to 9 feet occasionally
to 11 feet. 
.sunday...southwest gales to 35 knots diminishing to 20 to
30 knots. waves building to 9 to 12 feet occasionally to 15 feet,
then subsiding to 2 to 4 feet. 
.monday...west winds 5 to 15 knots. waves subsiding to calm to
2 feet. 

$$

fzus63 kmqt 150801
glfls 
expires:202610152000;;127086

open lake forecast for lake superior
national weather service marquette mi
401 am edt thu oct 15 2026

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

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

.synopsis...

a 30.2 inch high pressure centered over central ontario continues to 
moves east into quebec by this afternoon. meanwhile, a 29.9 inch low 
is moving into manitoba, and another 29.9 inch low is developing 
over the southern plains. this afternoon, the lows begin to converge 
over the upper midwest, consolidating into a 29.8 inch low near 
chicago this evening and moving northeast into the lp tonight. in 
its wake, a 30.9 inch high builds over wyoming, weakening to 30.6 
inches friday as it expands over the plains while the low deepens to 
29.5 inches and heads towards new england. the high slides south of 
the great lakes at 30.4 inches by saturday night as a 29.4 inch 
alberta clipper moves into saskatchewan. sunday, the high builds 
back to 30.5 inches over the delmarva peninsula as the clipper moves 
into manitoba. ridging recovers over the great lakes monday.




lsz267-152000-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
401 am edt thu oct 15 2026

...gale warning in effect from friday morning through friday
evening...

.early this morning...southeast winds 10 to 20 knots. waves calm
to 2 feet. 
.today...southeast winds 10 to 20 knots. a chance of showers by
mid afternoon. waves building to 1 to 3 feet. 
.tonight...southeast winds 10 to 20 knots backing east after
midnight, then becoming northeast 15 to 25 knots late. showers.
waves subsiding to calm to 2 feet, then building to 2 to 4 feet. 
.friday...north gales to 40 knots. a chance of showers through
early afternoon. waves building to 10 to 14 feet occasionally to
18 feet. 
.friday night...north gales to 35 knots becoming west 15 to
25 knots after midnight. waves subsiding to 2 to 4 feet. 
.saturday...west winds 15 to 25 knots increasing to 20 to
30 knots by mid afternoon. waves building to 5 to 8 feet
occasionally to 10 feet, then subsiding to 3 to 6 feet
occasionally to 8 feet. 
.saturday night...southwest winds 20 to 30 knots increasing to
gales to 35 knots after midnight. waves building to 5 to 8 feet
occasionally to 10 feet. 
.sunday...southwest winds 20 to 30 knots. waves subsiding to 2 to
4 feet. 
.monday...west winds 5 to 15 knots. waves subsiding to calm to
2 feet. 

$$