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FZUS63 KMQT 161345
GLFLS

Open Lake Forecast for Lake Superior
National Weather Service Marquette MI
945 AM EDT Tue Jul 16 2024

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...This morning, a broad 29.6 inch low is over northeast
Ontario and Quebec while a 30.0 inch high is over Manitoba. The
high will slowly build to 30.2 inches as it sags south into the
the Minnesota and Wisconsin area by Thursday morning. The high
will weaken to 30.1 inches as it slips south of Lake Superior
Friday while a weak 30.0 inch trough pushes over the lake into
Saturday.

LSZ162-162145-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
945 AM EDT Tue Jul 16 2024 /845 AM CDT Tue Jul 16 2024/

.REST OF TODAY...West winds 5 to 15 knots increasing to 10 to
20 knots in the afternoon. A slight chance of showers by mid
afternoon. Waves calm to 2 feet.
.TONIGHT...Northwest winds 10 to 20 knots veering north after
midnight, then increasing to 15 to 25 knots late. A slight chance
of thunderstorms through midnight. A slight chance of showers.
Waves building to 1 to 3 feet.
.WEDNESDAY...North winds 10 to 20 knots becoming west 5 to
15 knots in the afternoon. Waves subsiding to calm to 2 feet.
.WEDNESDAY NIGHT...West winds 5 to 15 knots veering northwest
after midnight. Waves calm to 2 feet.
.THURSDAY...West winds 5 to 15 knots backing southwest by mid
afternoon. Waves calm to 2 feet.
.THURSDAY NIGHT...Southwest winds 5 to 15 knots becoming west
10 to 20 knots after midnight. Waves calm to 2 feet.
.FRIDAY...Southwest winds 10 to 20 knots becoming west 5 to
15 knots. Waves building to 1 to 3 feet, then subsiding to calm
to 2 feet.
.SATURDAY...East winds 5 to 15 knots backing northeast. Waves
calm to 2 feet.

$$

LSZ263-162145-
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-
945 AM EDT Tue Jul 16 2024

.REST OF TODAY...West winds 5 to 15 knots. A slight chance of
showers and thunderstorms by mid afternoon. Waves calm to 2 feet.
.TONIGHT...Northwest winds 5 to 15 knots becoming north 10 to
20 knots after midnight. A slight chance of showers. Waves
building to 1 to 3 feet.
.WEDNESDAY...North winds 10 to 20 knots becoming northwest 5 to
15 knots in the afternoon, then backing west late. A slight
chance of showers through early afternoon. Waves subsiding to
calm to 2 feet.
.WEDNESDAY NIGHT...West winds 5 to 15 knots diminishing to less
than 10 knots after midnight. Waves calm to 2 feet.
.THURSDAY...West winds 5 to 15 knots backing southwest by mid
afternoon. Waves building to 1 to 3 feet.
.THURSDAY NIGHT...Southwest winds 5 to 15 knots. Waves subsiding
to calm to 2 feet.
.FRIDAY...Southwest winds 10 to 20 knots veering west. Waves
building to 1 to 3 feet, then subsiding to calm to 2 feet.
.SATURDAY...Northeast winds 5 to 15 knots. Waves calm to 2 feet.

$$

LSZ264-162145-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
945 AM EDT Tue Jul 16 2024

.REST OF TODAY...Northwest winds 5 to 15 knots backing west in
the afternoon. A slight chance of showers by mid afternoon. Waves
calm to 2 feet.
.TONIGHT...Northwest winds 5 to 15 knots becoming north 10 to
20 knots after midnight. A slight chance of showers. Waves
building to 2 to 4 feet.
.WEDNESDAY...North winds 10 to 20 knots becoming northwest 5 to
15 knots late. A slight chance of showers through early
afternoon. Waves subsiding to 1 to 3 feet.
.WEDNESDAY NIGHT...West winds 5 to 15 knots veering northwest
after midnight. Waves subsiding to calm to 2 feet.
.THURSDAY...West winds 5 to 15 knots backing southwest by mid
afternoon. Waves calm to 2 feet.
.THURSDAY NIGHT...Southwest winds 5 to 15 knots. Waves building
to 1 to 3 feet, then subsiding to calm to 2 feet.
.FRIDAY...Southwest winds 10 to 20 knots becoming west 5 to
15 knots. Waves building to 1 to 3 feet, then subsiding to calm
to 2 feet.
.SATURDAY...North winds 5 to 15 knots becoming northeast less
than 10 knots. Waves calm to 2 feet.

$$

LSZ265-162145-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
945 AM EDT Tue Jul 16 2024

.REST OF TODAY...Northwest winds 10 to 20 knots. Waves calm to
2 feet.
.TONIGHT...Northwest winds 10 to 20 knots increasing to 15 to
25 knots late. A slight chance of showers after midnight. Waves
building to 1 to 3 feet.
.WEDNESDAY...Northwest winds 15 to 25 knots veering north in the
afternoon, then becoming northwest 10 to 20 knots late. A slight
chance of showers through early afternoon. Waves building to 3 to
5 feet occasionally to 7 feet, then subsiding to 2 to 4 feet.
.WEDNESDAY NIGHT...Northwest winds 10 to 20 knots backing west
after midnight. Waves subsiding to calm to 2 feet.
.THURSDAY...West winds 5 to 15 knots. Waves calm to 2 feet.
.THURSDAY NIGHT...Southwest winds 5 to 15 knots. Waves calm to
2 feet.
.FRIDAY...West winds 5 to 15 knots. Waves calm to 2 feet.
.SATURDAY...North winds 5 to 15 knots. Waves calm to 2 feet.

$$

LSZ266-162145-
Lake Superior East of a line from Manitou Island to Marquette MI
and West of a line from Grand Marais MI to the US/Canadian Border
Beyond 5NM from shore-
945 AM EDT Tue Jul 16 2024

.REST OF TODAY...Northwest winds 10 to 20 knots diminishing to
5 to 15 knots late. Haze by late morning. Waves calm to 2 feet.
.TONIGHT...Northwest winds 5 to 15 knots increasing to 10 to
20 knots after midnight. A slight chance of showers after
midnight. Waves building to 2 to 4 feet.
.WEDNESDAY...Northwest winds 15 to 25 knots. A slight chance of
showers through early afternoon. Waves building to 3 to 5 feet
occasionally to 7 feet.
.WEDNESDAY NIGHT...Northwest winds 10 to 20 knots diminishing to
5 to 15 knots after midnight. Waves subsiding to calm to 2 feet.
.THURSDAY...Northwest winds 5 to 15 knots backing west by mid
afternoon. Waves calm to 2 feet.
.THURSDAY NIGHT...Southwest winds 5 to 15 knots. Waves calm to
2 feet.
.FRIDAY...West winds 5 to 15 knots. Waves building to 1 to
3 feet, then subsiding to calm to 2 feet.
.SATURDAY...North winds 5 to 15 knots. Waves calm to 2 feet.

$$

LSZ267-162145-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
945 AM EDT Tue Jul 16 2024

.REST OF TODAY...Northwest winds 10 to 20 knots. Haze by late
morning. Waves calm to 2 feet building to 1 to 3 feet.
.TONIGHT...Northwest winds 10 to 20 knots. A slight chance of
showers after midnight. Waves subsiding to calm to 2 feet, then
building to 1 to 3 feet.
.WEDNESDAY...Northwest winds 10 to 20 knots increasing to 15 to
25 knots in the afternoon. A slight chance of showers. Waves
building to 3 to 5 feet occasionally to 7 feet.
.WEDNESDAY NIGHT...Northwest winds 10 to 20 knots. Waves
subsiding to calm to 2 feet.
.THURSDAY...Northwest winds 10 to 20 knots becoming west 5 to
15 knots by mid afternoon. Waves calm to 2 feet.
.THURSDAY NIGHT...West winds 5 to 15 knots backing southwest
after midnight. Waves calm to 2 feet.
.FRIDAY...West winds 5 to 15 knots backing southwest. Waves calm
to 2 feet.
.SATURDAY...Northwest winds 5 to 15 knots veering northeast.
Waves calm to 2 feet.

$$
LSZ261-162145-
MAFOR 1615/
Superior West 11610 11510 11610 12710 13820. Waves 1 to 3 feet.

Superior North Central 11710 13610 11720 11830 12820. Waves 1 to
4 feet.

Superior South Central 11710 11810 13710 13720. Waves 1 to 4 feet.

Superior East 11700 15710 11720. Waves 2 to 3 feet.

$$

GS

Experimental modernized open lake forecast is available online at
weather.gov/mqt/glftable

Graphical marine forecasts are available online at:
weather.gov/greatlakes