fzus63 kmqt 151401
glfls 
expires:202606152000;;788702

open lake forecast for lake superior
national weather service marquette mi
1001 am 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... 

a 29.5 inch low over northern ontario this morning brings 29.7 inch 
troughing over lake superior this afternoon, with the troughing 
deepening to 29.6 inches by this evening as the parent low heads 
towards james bay. the troughing deepens into a 29.5 inch low over 
northeast wisconsin and the u.p. on tuesday before slowly moving 
east-northeast into ontario tuesday night into early wednesday 
morning. a low of 29.2 inches over the northern plains on wednesday 
morning then moves through the great lakes region wednesday night 
before arriving into southern ontario early thursday morning. a 30.0 
inch ridge 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. 




lsz162-152000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1001 am edt mon jun 15 2026 /901 am cdt mon jun 15 2026/

.rest of today...southwest winds 15 to 25 knots. a chance of
showers and a slight chance of thunderstorms by mid afternoon.
waves 2 to 4 feet building to 3 to 5 feet occasionally to 7 feet,
then subsiding to 2 to 4 feet. 
.tonight...southwest winds 10 to 20 knots diminishing to 5 to
15 knots after midnight, then veering north late. a slight chance
of thunderstorms through midnight. a chance of rain showers.
waves subsiding to calm to 2 feet. 
.tuesday...northeast winds 5 to 15 knots veering east in the
afternoon, then veering southwest late. a slight chance of
showers through early afternoon. waves calm to 2 feet. 
.tuesday night...south winds 5 to 15 knots diminishing to less
than 10 knots after midnight. waves calm to 2 feet. 
.wednesday...east winds 5 to 15 knots increasing to 10 to
20 knots by mid afternoon. a chance of rain showers. a slight
chance of thunderstorms by mid afternoon. waves building to 1 to
3 feet. 
.wednesday night...northeast winds 15 to 25 knots becoming north
10 to 20 knots after midnight. a chance of rain showers. waves
building to 2 to 4 feet, then subsiding to 1 to 3 feet. 
.thursday...west winds 10 to 20 knots. waves subsiding to calm to
2 feet. 
.friday...west winds 10 to 20 knots diminishing to 5 to 15 knots.
waves calm to 2 feet. 

$$

fzus63 kmqt 151401
glfls 
expires:202606152000;;788703

open lake forecast for lake superior
national weather service marquette mi
1001 am 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... 

a 29.5 inch low over northern ontario this morning brings 29.7 inch 
troughing over lake superior this afternoon, with the troughing 
deepening to 29.6 inches by this evening as the parent low heads 
towards james bay. the troughing deepens into a 29.5 inch low over 
northeast wisconsin and the u.p. on tuesday before slowly moving 
east-northeast into ontario tuesday night into early wednesday 
morning. a low of 29.2 inches over the northern plains on wednesday 
morning then moves through the great lakes region wednesday night 
before arriving into southern ontario early thursday morning. a 30.0 
inch ridge 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. 




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-
1001 am edt mon jun 15 2026

.rest of today...southwest winds 15 to 25 knots. a slight chance
of showers and thunderstorms by mid afternoon. waves 3 to 6 feet
occasionally to 8 feet, then subsiding to 3 to 5 feet
occasionally to 7 feet. 
.tonight...southwest winds 10 to 20 knots diminishing to 5 to
15 knots after midnight, then backing northeast late. a slight
chance of thunderstorms through midnight. a slight chance of rain
showers. waves subsiding to calm to 2 feet. 
.tuesday...northeast winds 5 to 15 knots veering southwest late.
a chance of rain showers through early afternoon. waves calm to
2 feet. 
.tuesday night...southwest winds 5 to 15 knots becoming south
less than 10 knots after midnight. waves calm to 2 feet. 
.wednesday...south winds 5 to 15 knots backing east by mid
afternoon. a chance of rain showers by mid afternoon. waves calm
to 2 feet. 
.wednesday night...northeast winds 10 to 20 knots. 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. waves subsiding to 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. 

$$