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(1/2)
Latest Great Lakes Marine Forecast by KMQT
Issued 6/17/2026 10:01 PM America/New_York.
Valid through 6/18/2026 4:00 AM America/New_York.
fzus63 kmqt 180201
glfls
expires:202606180800;;929860
open lake forecast for lake superior
national weather service marquette mi
1000 pm edt wed jun 17 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 29.2 inch low pressure skirts south of the up into southern quebec
this evening into thursday morning. this low slowly fills on friday
while a 30.0 inch high builds over the upper mississippi valley,
persisting into saturday. moving into early next week, a high
pressure over northern canada drops 30.0 inch south over lake
superior on sunday, increasing to 30.2 inches by monday as the
parent high strengthens to 30.3 inches as it moves into western
hudson bay.
lsz162-180800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1000 pm edt wed jun 17 2026 /900 pm cdt wed jun 17 2026/
.rest of tonight...northeast winds 5 to 15 knots backing north
after midnight, then backing west late. a slight chance of
showers by midnight. waves calm to 2 feet.
.thursday...west winds 10 to 20 knots. a slight chance of showers
by mid afternoon. waves calm to 2 feet.
.thursday night...west winds 10 to 20 knots diminishing to 5 to
15 knots late. waves calm to 2 feet.
.friday...west winds 5 to 15 knots backing southwest by mid
afternoon. a slight chance of showers by mid afternoon. waves
calm to 2 feet.
.friday night...southwest winds 5 to 15 knots veering west after
midnight. a slight chance of showers through midnight. waves calm
to 2 feet.
.saturday...west winds 5 to 15 knots backing southwest by mid
afternoon. waves calm to 2 feet.
.saturday night...north winds 5 to 15 knots. waves calm to
2 feet.
.sunday...northeast winds 5 to 15 knots backing north. waves calm
to 2 feet.
.monday...north winds 5 to 15 knots diminishing to less than
10 knots. waves calm to 2 feet.
$$
(2/2)
Latest Great Lakes Marine Forecast by KMQT
Issued 6/17/2026 10:01 PM America/New_York.
Valid through 6/18/2026 4:00 AM America/New_York.
fzus63 kmqt 180201
glfls
expires:202606180800;;929861
open lake forecast for lake superior
national weather service marquette mi
1000 pm edt wed jun 17 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 29.2 inch low pressure skirts south of the up into southern quebec
this evening into thursday morning. this low slowly fills on friday
while a 30.0 inch high builds over the upper mississippi valley,
persisting into saturday. moving into early next week, a high
pressure over northern canada drops 30.0 inch south over lake
superior on sunday, increasing to 30.2 inches by monday as the
parent high strengthens to 30.3 inches as it moves into western
hudson bay.
lsz263-180800-
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 pm edt wed jun 17 2026
.rest of tonight...northeast winds 5 to 15 knots backing north
after midnight, then backing west late. a slight chance of rain
showers. waves calm to 2 feet.
.thursday...west winds 5 to 15 knots increasing to 10 to 20 knots
in the afternoon. a slight chance of showers. a slight chance of
thunderstorms by mid afternoon. waves building to 1 to 3 feet.
.thursday night...west winds 10 to 20 knots diminishing to 5 to
15 knots after midnight. waves subsiding to calm to 2 feet.
.friday...west winds 5 to 15 knots becoming southwest 10 to
20 knots by mid afternoon. waves building to 1 to 3 feet.
.friday night...southwest winds 5 to 15 knots veering west after
midnight. a slight chance of showers through midnight. waves
subsiding to calm to 2 feet.
.saturday...west winds 5 to 15 knots. waves calm to 2 feet.
.saturday night...west winds 5 to 15 knots becoming north less
than 10 knots after midnight. waves calm to 2 feet.
.sunday...northeast winds 5 to 15 knots backing north. waves calm
to 2 feet.
.monday...north winds 5 to 15 knots becoming west less than
10 knots. waves calm to 2 feet.
$$
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