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(1/2)
Latest Great Lakes Marine Forecast by KMQT
Issued 9/2/2026 4:20 PM America/New_York.
Valid through 9/3/2026 4:00 AM America/New_York.
fzus63 kmqt 022020 cca
glfls
expires:202609030800;;794795
open lake forecast for lake superior...corrected
national weather service marquette mi
420 pm edt wed sep 2 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 29.8 inch low continues to move into western quebec this
afternoon. a broad 29.9 inch trough over the upper great lakes will
shift east as the low departs ontario tonight and a 29.9 inch ridge
will move into the area, building to 30.0 inches by friday
afternoon. ridging will build to 30.1 inches by sunday night and
persist through monday afternoon.
lsz162-030800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
420 pm edt wed sep 2 2026 /320 pm cdt wed sep 2 2026/
.late this afternoon...southwest winds 5 to 15 knots. waves calm
to 2 feet.
.tonight...northeast winds 5 to 15 knots. waves calm to 2 feet.
.thursday...northeast winds 5 to 15 knots increasing to 15 to
25 knots in the afternoon, then becoming east 20 to 30 knots
late. waves building to 2 to 4 feet.
.thursday night...east winds 15 to 25 knots becoming northeast
10 to 20 knots after midnight. a chance of showers and a slight
chance of thunderstorms. waves subsiding to 1 to 3 feet.
.friday...northeast winds 15 to 25 knots. a slight chance of
showers through early afternoon. waves building to 2 to 4 feet.
.friday night...northeast winds 15 to 25 knots diminishing to
5 to 15 knots after midnight. waves subsiding to calm to 2 feet.
.saturday...northeast winds 5 to 15 knots increasing to 10 to
20 knots by mid afternoon. waves calm to 2 feet.
.saturday night...northeast winds 5 to 15 knots. a chance of
showers and thunderstorms. waves calm to 2 feet.
.sunday...east winds 5 to 15 knots becoming northeast 10 to
20 knots. a chance of showers. waves building to 1 to 3 feet.
.monday...east gales to 35 knots. a chance of showers. showers
likely. waves building to 2 to 4 feet.
$$
(2/2)
Latest Great Lakes Marine Forecast by KMQT
Issued 9/2/2026 4:20 PM America/New_York.
Valid through 9/3/2026 4:00 AM America/New_York.
fzus63 kmqt 022020 cca
glfls
expires:202609030800;;794796
open lake forecast for lake superior...corrected
national weather service marquette mi
420 pm edt wed sep 2 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 29.8 inch low continues to move into western quebec this
afternoon. a broad 29.9 inch trough over the upper great lakes will
shift east as the low departs ontario tonight and a 29.9 inch ridge
will move into the area, building to 30.0 inches by friday
afternoon. ridging will build to 30.1 inches by sunday night and
persist through monday afternoon.
lsz263-030800-
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-
420 pm edt wed sep 2 2026
.late this afternoon...southwest winds 5 to 15 knots. waves calm
to 2 feet.
.tonight...west winds 5 to 15 knots diminishing to less than
10 knots after midnight, then veering northeast late. waves calm
to 2 feet.
.thursday...northeast winds 5 to 15 knots increasing to 10 to
20 knots in the afternoon, then becoming east 15 to 25 knots
late. waves building to 1 to 3 feet.
.thursday night...east winds 15 to 25 knots diminishing to 10 to
20 knots after midnight. a slight chance of showers through
midnight. a slight chance of thunderstorms. a chance of showers
after midnight. waves subsiding to calm to 2 feet.
.friday...east winds 10 to 20 knots increasing to 15 to 25 knots
by mid afternoon. a slight chance of showers through early
afternoon. waves building to 1 to 3 feet.
.friday night...east winds 15 to 25 knots diminishing to 5 to
15 knots after midnight. waves subsiding to calm to 2 feet.
.saturday...east winds 5 to 15 knots. waves calm to 2 feet.
.saturday night...east winds 5 to 15 knots veering southeast
after midnight. a chance of showers. a chance of thunderstorms
after midnight. waves calm to 2 feet.
.sunday...south winds 5 to 15 knots becoming east 15 to 25 knots.
a chance of showers. waves building to 1 to 3 feet.
.monday...east gales to 35 knots becoming southeast 20 to
30 knots. a chance of showers. waves building to 2 to 4 feet.
$$
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