fzus63 kmqt 091500
glfls 
expires:202601092100;;059823

open lake forecast for lake superior
national weather service marquette mi
1000 am est fri jan 9 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...

29.4 inch low pressure is over northern ontario this morning, headed 
for quebec by this afternoon. 30.2 inch ridging settles over the 
great lakes tonight as the low pushes into quebec, though a weak 
30.1 inch low will approach over northwest ontario. this low will 
merge with another low moving into the great lakes from the 
southeast on saturday, making a 29.8 inch low near lakes ontario and 
erie saturday afternoon. saturday night, the low deepens to 29.6 
inches over southern ontario while 30.5 inch high pressure builds 
over the plains. throughout sunday, the low will push east over the 
st. lawrence seaway while the high slides south of the great lakes. 
sunday night, a weak 29.9 inch trough pushes over lake superior 
associated with a 29.6 inch low over hudson bay. a weak 30.0 inch 
high then moves over the lake monday night ahead of a 29.4 inch low 
over lake winnipeg. this low deepens to 29.3 inches by tuesday 
evening near lake superior before moving to the ontario/quebec line 
wednesday afternoon. meanwhile, 30.5 inch high pressure moves over 
the dakotas.



lsz162-092100-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1000 am est fri jan 9 2026 /900 am cst fri jan 9 2026/

.rest of today...northwest winds 10 to 20 knots diminishing to
5 to 15 knots by late morning, then backing west by mid
afternoon. waves 2 to 4 feet subsiding to calm to 2 feet. 
.tonight...southwest winds 5 to 15 knots becoming west 10 to
20 knots late. a chance of snow showers. waves calm to 2 feet. 
.saturday...west winds 10 to 20 knots veering northwest by late
morning, then becoming north 20 to 30 knots by mid afternoon. a
chance of snow showers. waves building to 2 to 4 feet. 
.saturday night...north winds 20 to 30 knots diminishing to 15 to
25 knots after midnight. a slight chance of snow showers in the
evening. waves building to 3 to 6 feet occasionally to 8 feet. 
.sunday...northwest winds 10 to 20 knots becoming southwest 20 to
30 knots in the afternoon. waves subsiding to 1 to 3 feet, then
building to 3 to 6 feet occasionally to 8 feet. 
.sunday night...southwest gales to 35 knots becoming west 20 to
30 knots after midnight. a chance of snow showers. waves building
to 4 to 7 feet occasionally to 9 feet, then subsiding to 2 to
4 feet. 
.monday...west winds 10 to 20 knots backing southwest. waves
subsiding to calm to 2 feet. 
.tuesday...north winds 10 to 20 knots increasing to 15 to
25 knots. a chance of rain showers. a chance of snow showers.
waves building to 3 to 5 feet occasionally to 7 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 091500
glfls 
expires:202601092100;;059824

open lake forecast for lake superior
national weather service marquette mi
1000 am est fri jan 9 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...

29.4 inch low pressure is over northern ontario this morning, headed 
for quebec by this afternoon. 30.2 inch ridging settles over the 
great lakes tonight as the low pushes into quebec, though a weak 
30.1 inch low will approach over northwest ontario. this low will 
merge with another low moving into the great lakes from the 
southeast on saturday, making a 29.8 inch low near lakes ontario and 
erie saturday afternoon. saturday night, the low deepens to 29.6 
inches over southern ontario while 30.5 inch high pressure builds 
over the plains. throughout sunday, the low will push east over the 
st. lawrence seaway while the high slides south of the great lakes. 
sunday night, a weak 29.9 inch trough pushes over lake superior 
associated with a 29.6 inch low over hudson bay. a weak 30.0 inch 
high then moves over the lake monday night ahead of a 29.4 inch low 
over lake winnipeg. this low deepens to 29.3 inches by tuesday 
evening near lake superior before moving to the ontario/quebec line 
wednesday afternoon. meanwhile, 30.5 inch high pressure moves over 
the dakotas.



lsz263-092100-
lake superior from saxon harbor wi to upper entrance to portage
canal mi 5nm off shore to the us/canadian border including isle
royale national park-
1000 am est fri jan 9 2026

.rest of today...north winds 15 to 25 knots backing northwest by
late morning, then diminishing to 5 to 15 knots by mid afternoon.
waves 5 to 8 feet occasionally to 10 feet subsiding to 1 to
3 feet. 
.tonight...southwest winds 5 to 15 knots backing south late. a
chance of snow showers. waves subsiding to calm to 2 feet. 
.saturday...west winds 5 to 15 knots increasing to 10 to 20 knots
by late morning, then becoming north 20 to 30 knots by mid
afternoon. a chance of snow showers in the morning, then snow
showers likely in the afternoon. waves building to 4 to 7 feet
occasionally to 9 feet. 
.saturday night...north gales to 35 knots diminishing to 20 to
30 knots after midnight. freezing spray. a chance of snow
showers. waves building to 6 to 9 feet occasionally to 11 feet,
then subsiding to 4 to 7 feet occasionally to 9 feet. 
.sunday...northwest winds 10 to 20 knots becoming west gales to
35 knots in the afternoon. waves subsiding to 1 to 3 feet, then
building to 3 to 6 feet occasionally to 8 feet. 
.sunday night...west gales to 35 knots. a chance of snow showers.
waves building to 7 to 10 feet occasionally to 13 feet, then
subsiding to 5 to 8 feet occasionally to 10 feet. 
.monday...west winds 15 to 25 knots diminishing to 10 to
20 knots. waves subsiding to 1 to 3 feet. 
.tuesday...north winds 15 to 25 knots increasing to gales to
35 knots. a chance of snow showers, possibly mixed with rain.
freezing spray. waves building to 6 to 9 feet occasionally to
11 feet. 

note, wave height forecasts are for ice free areas.

$$