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(1/2)
Latest Great Lakes Marine Forecast by KMQT
Issued 8/8/2026 10:01 PM America/New_York.
Valid through 8/9/2026 4:00 AM America/New_York.
fzus63 kmqt 090201
glfls
expires:202608090800;;856502
open lake forecast for lake superior
national weather service marquette mi
1001 pm edt sat aug 8 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...
upper michigan is situated between a 29.6 inch hudson bay low and a
30.0 inch high centered over the ohio river valley. this will drive
weak and ill-defined 29.9 inch ridging/troughing over lake superior
through monday night as the high moves southeast. weak ridging of
30.0 inches extending between a 30.2 inch bermuda high and 30.0 inch
ridging over western canada returns for tuesday before decreasing to
29.9 inches tuesday night. a 29.8 inch trough moves over the lake
wednesday before ridging of 30.0 inches returns on thursday from the
canadian prairie.
lsz162-090800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1001 pm edt sat aug 8 2026 /901 pm cdt sat aug 8 2026/
.rest of tonight...southwest winds 5 to 15 knots veering
northwest late. a chance of showers and a slight chance of
thunderstorms. waves calm to 2 feet.
.sunday...west winds 5 to 15 knots backing south in the
afternoon. a slight chance of showers through early afternoon.
waves calm to 2 feet.
.sunday night...southwest winds 5 to 15 knots veering west after
midnight. waves calm to 2 feet.
.monday...west winds 5 to 15 knots backing southwest by mid
afternoon. waves calm to 2 feet.
.monday night...west winds 5 to 15 knots veering north after
midnight. a slight chance of showers after midnight. waves calm
to 2 feet.
.tuesday...north winds 5 to 15 knots veering south by mid
afternoon. waves calm to 2 feet.
.tuesday night...west winds 5 to 15 knots. waves calm to 2 feet.
.wednesday...west winds 5 to 15 knots veering northwest. waves
calm to 2 feet.
.thursday...northwest winds 5 to 15 knots. waves calm to 2 feet.
$$
(2/2)
Latest Great Lakes Marine Forecast by KMQT
Issued 8/8/2026 10:01 PM America/New_York.
Valid through 8/9/2026 4:00 AM America/New_York.
fzus63 kmqt 090201
glfls
expires:202608090800;;856503
open lake forecast for lake superior
national weather service marquette mi
1001 pm edt sat aug 8 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...
upper michigan is situated between a 29.6 inch hudson bay low and a
30.0 inch high centered over the ohio river valley. this will drive
weak and ill-defined 29.9 inch ridging/troughing over lake superior
through monday night as the high moves southeast. weak ridging of
30.0 inches extending between a 30.2 inch bermuda high and 30.0 inch
ridging over western canada returns for tuesday before decreasing to
29.9 inches tuesday night. a 29.8 inch trough moves over the lake
wednesday before ridging of 30.0 inches returns on thursday from the
canadian prairie.
lsz263-090800-
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 pm edt sat aug 8 2026
.rest of tonight...southwest winds 5 to 15 knots veering west
after midnight. a chance of showers. a slight chance of
thunderstorms after midnight. waves 1 to 3 feet subsiding to calm
to 2 feet.
.sunday...west winds 5 to 15 knots veering north in the
afternoon, then backing southwest late. a slight chance of
showers through early afternoon. waves calm to 2 feet.
.sunday night...southwest winds 5 to 15 knots diminishing to less
than 10 knots after midnight, then veering west late. waves calm
to 2 feet.
.monday...west winds 5 to 15 knots becoming southwest 10 to
20 knots by mid afternoon. waves calm to 2 feet.
.monday night...southwest winds 5 to 15 knots veering west after
midnight. waves calm to 2 feet.
.tuesday...west winds 5 to 15 knots backing southwest by mid
afternoon. waves calm to 2 feet.
.tuesday night...southwest winds 5 to 15 knots becoming west less
than 10 knots after midnight. waves calm to 2 feet.
.wednesday...west winds 5 to 15 knots veering northwest. waves
calm to 2 feet.
.thursday...west winds 5 to 15 knots veering northwest. waves
calm to 2 feet.
$$
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