fzus63 kmqt 160801
glfls 
expires:202610162000;;183707

open lake forecast for lake superior
national weather service marquette mi
400 am edt fri oct 16 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 29.6 inch low over southern ontario this morning lifts to southern 
quebec at 29.5 inches this afternoon. in its wake, a 30.8 inch high 
lifting off of the central rockies weakens to 30.6 inches today as 
it moves east over the plains. this evening, the aforementioned low 
deepens to 29.4 inches and heads towards the mouth of the st. 
lawrence river. the high then slides south of the great lakes at 
30.5 inches by saturday night as a 29.2 inch alberta clipper moves 
through the northern canadian prairie provinces towards hudson bay, 
deepening to 29.1 inches by the time it arrives on sunday. by 
sunday, the high will build to 30.6 inches over the northeastern 
conus. as the low moves east over hudson bay and weakens with time 
sunday night into monday afternoon, expect high pressure of 30.3 
inches to return to the upper great lakes by late monday. the high 
pressure strengthens to 30.4 inches over lake superior by tuesday, 
then 30.5 inches over northeastern ontario tuesday evening and 30.6 
inches over quebec wednesday. 




lsz162-162000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
400 am edt fri oct 16 2026 /300 am cdt fri oct 16 2026/

...gale warning in effect until 2 pm edt /1 pm cdt/ this
afternoon...

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

$$

fzus63 kmqt 160801
glfls 
expires:202610162000;;183708

open lake forecast for lake superior
national weather service marquette mi
400 am edt fri oct 16 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 29.6 inch low over southern ontario this morning lifts to southern 
quebec at 29.5 inches this afternoon. in its wake, a 30.8 inch high 
lifting off of the central rockies weakens to 30.6 inches today as 
it moves east over the plains. this evening, the aforementioned low 
deepens to 29.4 inches and heads towards the mouth of the st. 
lawrence river. the high then slides south of the great lakes at 
30.5 inches by saturday night as a 29.2 inch alberta clipper moves 
through the northern canadian prairie provinces towards hudson bay, 
deepening to 29.1 inches by the time it arrives on sunday. by 
sunday, the high will build to 30.6 inches over the northeastern 
conus. as the low moves east over hudson bay and weakens with time 
sunday night into monday afternoon, expect high pressure of 30.3 
inches to return to the upper great lakes by late monday. the high 
pressure strengthens to 30.4 inches over lake superior by tuesday, 
then 30.5 inches over northeastern ontario tuesday evening and 30.6 
inches over quebec wednesday. 




lsz263-162000-
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 edt fri oct 16 2026

...gale warning in effect until 4 pm edt this afternoon...

.early this morning...north gales to 35 knots. a chance of
showers. waves 5 to 8 feet occasionally to 10 feet building to
9 to 12 feet occasionally to 15 feet. 
.today...north gales to 40 knots diminishing to 20 to 30 knots
late. a chance of rain showers through early afternoon. waves
building to 11 to 15 feet occasionally to 19 feet, then subsiding
to 4 to 7 feet occasionally to 9 feet. 
.tonight...north winds 10 to 20 knots becoming west 5 to 15 knots
after midnight, then increasing to 20 to 30 knots late. waves
subsiding to 1 to 3 feet, then building to 3 to 6 feet
occasionally to 8 feet. 
.saturday...southwest winds 20 to 30 knots increasing to gales to
35 knots in the afternoon. waves building to 9 to 12 feet
occasionally to 15 feet, then subsiding to 6 to 9 feet
occasionally to 11 feet. 
.saturday night...southwest gales to 40 knots. waves subsiding to
5 to 8 feet occasionally to 10 feet, then building to 10 to
14 feet occasionally to 18 feet. 
.sunday...southwest gales to 40 knots. waves subsiding to 6 to
9 feet occasionally to 11 feet. 
.sunday night...southwest winds 20 to 30 knots becoming west
10 to 20 knots after midnight. waves subsiding to 1 to 3 feet. 
.monday...west winds 5 to 15 knots becoming south less than
10 knots. waves subsiding to calm to 2 feet. 
.tuesday...east winds 5 to 15 knots veering southeast. waves calm
to 2 feet. 

$$