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(1/2)
Latest Great Lakes Marine Forecast by KMQT
Issued 4/28/2026 10:07 AM America/New_York.
Valid through 4/28/2026 6:15 PM America/New_York.
fzus63 kmqt 281407
glfls
expires:202604282215;;672828
open lake forecast for lake superior
national weather service marquette mi
1007 am edt tue apr 28 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 29.4 inch low just northeast of lake superior this morning tracks
to james bay by this evening and then continues into northern quebec
on wednesday. weak ridging of 30.1 inches builds over the lake on
wednesday between 30.3 inch high pressure over the canadian prairie
and 29.7 inch troughing over the eastern seaboard. high pressure
gradually strengthens to 30.2 inches over the lake through friday as
the canadian high shifts east to northern ontario and hudson bay.
weak troughing of 29.9 inches moves over the lake on saturday and
strengthens to 29.7 inches through sunday as low pressure deepens to
29.6 inches over james bay.
lsz162-282215-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1007 am edt tue apr 28 2026 /907 am cdt tue apr 28 2026/
.rest of today...west winds 20 to 30 knots diminishing to 15 to
25 knots late. waves 3 to 6 feet occasionally to 8 feet subsiding
to 1 to 3 feet.
.tonight...northwest winds 10 to 20 knots diminishing to 5 to
15 knots after midnight. waves subsiding to calm to 2 feet.
.wednesday...west winds 5 to 15 knots increasing to 10 to
20 knots in the afternoon, then diminishing to 5 to 15 knots
late. a slight chance of rain showers by mid afternoon. waves
calm to 2 feet.
.wednesday night...northwest winds 5 to 15 knots veering north
after midnight. waves calm to 2 feet.
.thursday...north winds 5 to 15 knots backing southwest by mid
afternoon. waves calm to 2 feet.
.thursday night...north winds 5 to 15 knots. waves calm to
2 feet.
.friday...north winds 5 to 15 knots backing northwest. waves calm
to 2 feet.
.saturday...southwest winds 5 to 15 knots veering west. waves
calm to 2 feet.
$$
(2/2)
Latest Great Lakes Marine Forecast by KMQT
Issued 4/28/2026 10:07 AM America/New_York.
Valid through 4/28/2026 6:15 PM America/New_York.
fzus63 kmqt 281407
glfls
expires:202604282215;;672829
open lake forecast for lake superior
national weather service marquette mi
1007 am edt tue apr 28 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 29.4 inch low just northeast of lake superior this morning tracks
to james bay by this evening and then continues into northern quebec
on wednesday. weak ridging of 30.1 inches builds over the lake on
wednesday between 30.3 inch high pressure over the canadian prairie
and 29.7 inch troughing over the eastern seaboard. high pressure
gradually strengthens to 30.2 inches over the lake through friday as
the canadian high shifts east to northern ontario and hudson bay.
weak troughing of 29.9 inches moves over the lake on saturday and
strengthens to 29.7 inches through sunday as low pressure deepens to
29.6 inches over james bay.
lsz263-282215-
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-
1007 am edt tue apr 28 2026
...gale warning in effect until 2 pm edt this afternoon...
.rest of today...west gales to 35 knots diminishing to 15 to
25 knots. waves 7 to 10 feet occasionally to 13 feet subsiding to
3 to 6 feet occasionally to 8 feet.
.tonight...northwest winds 10 to 20 knots diminishing to 5 to
15 knots after midnight. waves subsiding to calm to 2 feet.
.wednesday...northwest winds 5 to 15 knots backing west in the
afternoon. waves calm to 2 feet.
.wednesday night...north winds less than 10 knots increasing to
5 to 15 knots after midnight. waves calm to 2 feet.
.thursday...north winds 5 to 15 knots backing west by mid
afternoon. waves calm to 2 feet.
.thursday night...northwest winds 5 to 15 knots veering north
after midnight. waves calm to 2 feet.
.friday...north winds 5 to 15 knots backing northwest. waves calm
to 2 feet.
.saturday...southwest winds 5 to 15 knots veering west. waves
calm to 2 feet.
$$
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