fzus63 kmqt 160201
glfls 
expires:202606160800;;815952

open lake forecast for lake superior
national weather service marquette mi
1000 pm edt mon jun 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... 

29.6 inch troughing spreads across lake superior tonight as the 29.5 
inch parent low continues towards james bay. the troughing deepens 
into a 29.5 inch low over northeast wisconsin and the u.p. tomrrow 
before slowly moving east-northeast into ontario tomorrow night into 
early wednesday morning. a low of 29.2 inches over the northern 
plains on wednesday morning then moves through lower michigan 
wednesday night before arriving into southern ontario early thursday 
morning. a 30.0 inch high then develops over the plains thursday 
night before diving into the mid-mississippi valley friday night; 
this brings 29.9 inch ridging over lake superior by friday. the 
ridging strengthen slightly to around 30.0 inches over lake superior 
by saturday as the parent high meanders into the ohio river valley. 




lsz162-160800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1001 pm edt mon jun 15 2026 /901 pm cdt mon jun 15 2026/

.rest of tonight...southwest winds 5 to 15 knots veering west
after midnight, then veering north late. a slight chance of
thunderstorms by midnight. a chance of rain showers. waves calm
to 2 feet. 
.tuesday...northeast winds 5 to 15 knots veering south in the
afternoon, then veering southwest late. a slight chance of rain
showers through early afternoon. waves calm to 2 feet. 
.tuesday night...south winds 5 to 15 knots becoming north less
than 10 knots after midnight, then veering east late. a slight
chance of rain showers after midnight. waves calm to 2 feet. 
.wednesday...east winds 10 to 20 knots increasing to 15 to
25 knots by mid afternoon. a slight chance of rain showers
through early afternoon, then rain showers likely by mid
afternoon. waves building to 2 to 4 feet. 
.wednesday night...northeast winds 15 to 25 knots becoming north
10 to 20 knots after midnight. a chance of rain showers. waves
subsiding to 1 to 3 feet. 
.thursday...west winds 10 to 20 knots. waves subsiding to calm to
2 feet. 
.thursday night...west winds 10 to 20 knots veering northwest
after midnight. waves calm to 2 feet. 
.friday...west winds 10 to 20 knots diminishing to 5 to 15 knots.
waves building to 1 to 3 feet, then subsiding to calm to 2 feet. 
.saturday...west winds 5 to 15 knots veering north. waves calm to
2 feet. 

$$

fzus63 kmqt 160201
glfls 
expires:202606160800;;815953

open lake forecast for lake superior
national weather service marquette mi
1000 pm edt mon jun 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... 

29.6 inch troughing spreads across lake superior tonight as the 29.5 
inch parent low continues towards james bay. the troughing deepens 
into a 29.5 inch low over northeast wisconsin and the u.p. tomrrow 
before slowly moving east-northeast into ontario tomorrow night into 
early wednesday morning. a low of 29.2 inches over the northern 
plains on wednesday morning then moves through lower michigan 
wednesday night before arriving into southern ontario early thursday 
morning. a 30.0 inch high then develops over the plains thursday 
night before diving into the mid-mississippi valley friday night; 
this brings 29.9 inch ridging over lake superior by friday. the 
ridging strengthen slightly to around 30.0 inches over lake superior 
by saturday as the parent high meanders into the ohio river valley. 




lsz263-160800-
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-
1001 pm edt mon jun 15 2026

.rest of tonight...southwest winds 5 to 15 knots veering north
late. a slight chance of rain showers. waves 1 to 3 feet
subsiding to calm to 2 feet. 
.tuesday...northeast winds 5 to 15 knots veering southwest late.
a slight chance of rain showers through early afternoon. waves
calm to 2 feet. 
.tuesday night...southwest winds 5 to 15 knots diminishing to
less than 10 knots after midnight, then backing south late. waves
calm to 2 feet. 
.wednesday...southeast winds 5 to 15 knots becoming east 10 to
20 knots by mid afternoon. a slight chance of rain showers
through early afternoon. rain showers likely by mid afternoon.
waves calm to 2 feet. 
.wednesday night...northeast winds 10 to 20 knots backing north
after midnight. a chance of rain showers. waves building to 2 to
4 feet, then subsiding to 1 to 3 feet. 
.thursday...west winds 5 to 15 knots increasing to 10 to 20 knots
by mid afternoon. waves subsiding to calm to 2 feet, then
building to 1 to 3 feet. 
.thursday night...west winds 10 to 20 knots becoming northwest
5 to 15 knots after midnight. waves 1 to 3 feet. 
.friday...west winds 10 to 20 knots. waves subsiding to calm to
2 feet, then building to 2 to 4 feet. 
.saturday...west winds 5 to 15 knots. waves calm to 2 feet. 

$$