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(1/2)
Latest Great Lakes Marine Forecast by KMQT
Issued 5/27/2026 4:01 AM America/New_York.
Valid through 5/27/2026 4:00 PM America/New_York.
fzus63 kmqt 270801
glfls
expires:202605272000;;722130
open lake forecast for lake superior
national weather service marquette mi
400 am edt wed may 27 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...
ridging of 30.2 inches persists over lake superior from a 30.4 inch
high over hudson bay. this parent high shifts southward over the
lake at 30.3 inches on thursday. the high weakens to around 30.1
inches on friday as it continues its southerly propagation towards
lower michigan. following this, a second ridge pushing in from
hudson bay brings 30.1 inch ridging back over lake superior late on
friday, with pressure increasing once again to 30.3 inches by
saturday midday as the parent high over hudson bay propagates south.
high pressure persists over lake superior through early next week.
lsz162-272000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
401 am edt wed may 27 2026 /301 am cdt wed may 27 2026/
.early this morning...northeast winds 5 to 15 knots. waves calm
to 2 feet.
.today...northeast winds 10 to 20 knots becoming east 15 to
25 knots in the afternoon, then backing northeast late. waves
building to 2 to 4 feet.
.tonight...northeast winds 10 to 20 knots diminishing to 5 to
15 knots after midnight. waves subsiding to calm to 2 feet.
.thursday...northeast winds 5 to 15 knots veering east late.
waves calm to 2 feet.
.thursday night...north winds 5 to 15 knots backing west after
midnight. waves calm to 2 feet.
.friday...southwest winds 5 to 15 knots. waves building to 1 to
3 feet.
.friday night...northeast winds 5 to 15 knots increasing to 15 to
25 knots after midnight. waves subsiding to calm to 2 feet, then
building to 2 to 4 feet.
.saturday...northeast winds 15 to 25 knots diminishing to 10 to
20 knots. waves building to 3 to 5 feet occasionally to 7 feet,
then subsiding to calm to 2 feet.
.sunday...east winds 5 to 15 knots backing northeast. waves calm
to 2 feet.
$$
(2/2)
Latest Great Lakes Marine Forecast by KMQT
Issued 5/27/2026 4:01 AM America/New_York.
Valid through 5/27/2026 4:00 PM America/New_York.
fzus63 kmqt 270801
glfls
expires:202605272000;;722131
open lake forecast for lake superior
national weather service marquette mi
400 am edt wed may 27 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...
ridging of 30.2 inches persists over lake superior from a 30.4 inch
high over hudson bay. this parent high shifts southward over the
lake at 30.3 inches on thursday. the high weakens to around 30.1
inches on friday as it continues its southerly propagation towards
lower michigan. following this, a second ridge pushing in from
hudson bay brings 30.1 inch ridging back over lake superior late on
friday, with pressure increasing once again to 30.3 inches by
saturday midday as the parent high over hudson bay propagates south.
high pressure persists over lake superior through early next week.
lsz263-272000-
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-
401 am edt wed may 27 2026
.early this morning...northeast winds 5 to 15 knots. waves calm
to 2 feet.
.today...northeast winds 10 to 20 knots increasing to 15 to
25 knots in the afternoon, then veering east late. waves building
to 2 to 4 feet.
.tonight...east winds 10 to 20 knots becoming northeast 5 to
15 knots after midnight, then diminishing to less than 10 knots
late. waves subsiding to calm to 2 feet.
.thursday...east winds 5 to 15 knots backing northeast in the
afternoon. waves calm to 2 feet.
.thursday night...south winds 5 to 15 knots veering southwest
after midnight. waves calm to 2 feet.
.friday...southwest winds 5 to 15 knots. waves building to 1 to
3 feet.
.friday night...east winds 5 to 15 knots increasing to 10 to
20 knots after midnight. waves subsiding to calm to 2 feet, then
building to 2 to 4 feet.
.saturday...east winds 10 to 20 knots. waves building to 3 to
5 feet occasionally to 7 feet, then subsiding to calm to 2 feet.
.sunday...south winds 5 to 15 knots backing northeast. waves calm
to 2 feet.
$$
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