505
FZUS63 KMQT 071346
GLFLS

Open Lake Forecast for Lake Superior
National Weather Service Marquette MI
946 AM EDT Fri Jun 7 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...The troughing over Lake Superior weakens to 29.6
inches today as the broad parent low spins just west of James Bay
at 29.3 inches. Weak troughing at 29.7 inches remains in place
over Lake Superior Saturday before ridging near 30.0 inches shifts
over Lake Superior late Sunday as high pressure moves into the
Canadian Prairies. The ridge builds to 30.1 inches over Lake
Superior Monday morning as the high positions overhead and
gradually weakens to 30.0 inches Tuesday afternoon.



LSZ162-072200-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
946 AM EDT Fri Jun 7 2024 /846 AM CDT Fri Jun 7 2024/

.REST OF TODAY...West winds 15 to 25 knots. Waves 1 to 3 feet.
.TONIGHT...West winds 10 to 20 knots. A chance of rain showers
after midnight. Waves subsiding to calm to 2 feet.
.SATURDAY...West winds 10 to 20 knots backing southwest in the
afternoon. A chance of showers. A slight chance of thunderstorms
by mid afternoon. Waves building to 1 to 3 feet.
.SATURDAY NIGHT...West winds 10 to 20 knots. A slight chance of
showers and thunderstorms through midnight. Waves subsiding to
calm to 2 feet.
.SUNDAY...Northwest winds 10 to 20 knots veering north by mid
afternoon. Waves calm to 2 feet.
.SUNDAY NIGHT...North winds 10 to 20 knots diminishing to 5 to
15 knots after midnight. Waves calm to 2 feet.
.MONDAY...Northeast winds 5 to 15 knots backing west. Waves calm
to 2 feet.
.TUESDAY...South winds 5 to 15 knots veering west. Waves calm to
2 feet.

$$

LSZ263-072200-
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-
946 AM EDT Fri Jun 7 2024

.REST OF TODAY...West winds 15 to 25 knots. Waves 3 to 5 feet
occasionally to 7 feet subsiding to 2 to 4 feet.
.TONIGHT...West winds 5 to 15 knots. A chance of rain showers
after midnight. Waves subsiding to calm to 2 feet.
.SATURDAY...West winds 5 to 15 knots backing southwest late. A
chance of showers. A slight chance of thunderstorms by mid
afternoon. Waves building to 1 to 3 feet.
.SATURDAY NIGHT...West winds 5 to 15 knots. A slight chance of
showers and thunderstorms through midnight. Waves 1 to 3 feet.
.SUNDAY...Northwest winds 5 to 15 knots veering north by mid
afternoon. Waves 1 to 3 feet.
.SUNDAY NIGHT...North winds 5 to 15 knots. Waves subsiding to
calm to 2 feet.
.MONDAY...North winds 5 to 15 knots backing southwest. Waves calm
to 2 feet.
.TUESDAY...South winds 5 to 15 knots veering southwest. Waves
calm to 2 feet.

$$

LSZ264-072200-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
946 AM EDT Fri Jun 7 2024

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

$$

LSZ265-072200-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
946 AM EDT Fri Jun 7 2024

.REST OF TODAY...West winds 20 to 30 knots diminishing to 15 to
25 knots late. Waves 2 to 4 feet subsiding to calm to 2 feet.
.TONIGHT...West winds 10 to 20 knots diminishing to 5 to 15 knots
after midnight. Waves calm to 2 feet.
.SATURDAY...West winds 10 to 20 knots. A chance of showers. Waves
calm to 2 feet.
.SATURDAY NIGHT...West winds 10 to 20 knots. A slight chance of
showers and thunderstorms through midnight. Waves calm to 2 feet.
.SUNDAY...Northwest winds 10 to 20 knots. Waves building to 1 to
3 feet.
.SUNDAY NIGHT...Northwest winds 10 to 20 knots veering north
after midnight. Waves subsiding to calm to 2 feet.
.MONDAY...North winds 10 to 20 knots becoming southwest 5 to
15 knots. Waves calm to 2 feet.
.TUESDAY...Southeast winds 5 to 15 knots becoming south 10 to
20 knots. Waves calm to 2 feet.

$$

LSZ266-072200-
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-
946 AM EDT Fri Jun 7 2024

.REST OF TODAY...West winds 15 to 25 knots increasing to 20 to
30 knots in the afternoon, then diminishing to 15 to 25 knots
late. A slight chance of showers by late morning. Waves 3 to
6 feet occasionally to 8 feet, then subsiding to 3 to 5 feet
occasionally to 7 feet.
.TONIGHT...West winds 10 to 20 knots diminishing to 5 to 15 knots
after midnight. Waves subsiding to calm to 2 feet.
.SATURDAY...West winds 5 to 15 knots increasing to 10 to 20 knots
in the afternoon. A slight chance of showers. Waves calm to
2 feet.
.SATURDAY NIGHT...West winds 10 to 20 knots veering northwest
after midnight. A slight chance of showers. Waves building to
1 to 3 feet.
.SUNDAY...Northwest winds 10 to 20 knots increasing to 15 to
25 knots by mid afternoon. Waves building to 2 to 4 feet.
.SUNDAY NIGHT...Northwest winds 10 to 20 knots veering north
after midnight. Waves subsiding to 1 to 3 feet.
.MONDAY...Northwest winds 10 to 20 knots diminishing to 5 to
15 knots. Waves subsiding to calm to 2 feet.
.TUESDAY...South winds 5 to 15 knots increasing to 10 to
20 knots. Waves calm to 2 feet.

$$

LSZ267-072200-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
946 AM EDT Fri Jun 7 2024

.REST OF TODAY...West winds 15 to 25 knots. A slight chance of
showers by late morning. Waves 3 to 6 feet occasionally to
8 feet.
.TONIGHT...West winds 10 to 20 knots. Waves subsiding to calm to
2 feet.
.SATURDAY...West winds 10 to 20 knots. A slight chance of
showers. Waves calm to 2 feet.
.SATURDAY NIGHT...West winds 10 to 20 knots. A slight chance of
showers. Waves building to 1 to 3 feet.
.SUNDAY...Northwest winds 10 to 20 knots. Waves building to 2 to
4 feet.
.SUNDAY NIGHT...Northwest winds 10 to 20 knots veering north
after midnight. Waves subsiding to 1 to 3 feet.
.MONDAY...Northwest winds 10 to 20 knots diminishing to 5 to
15 knots. Waves subsiding to calm to 2 feet.
.TUESDAY...South winds 5 to 15 knots increasing to 10 to
20 knots. Waves calm to 2 feet.

$$
LSZ261-072200-
MAFOR 0715/
Superior West 13620 12610 11600 12610. A chance of showers
overnight and Saturday morning. Waves 2 to 4 feet this afternoon.
Waves 1 to 3 feet tonight and Saturday morning.

Superior North Central 13630 11620 11610 11600 12610. Waves 3 to
5 feet this afternoon. Waves 2 to 4 feet subsiding to 1 to 2 feet
tonight. Waves 1 to 2 feet Saturday morning.

Superior South Central 12630 12620 13600 11610. Waves 2 to 4 feet
this afternoon. Waves 1 to 3 feet tonight. Waves 2 feet or less
Saturday morning.

Superior East 12630 11620 11720 13610 11600. Waves 4 to 6 feet
this afternoon. Waves 3 to 6 feet subsiding to 2 to 4 feet
tonight. Waves 1 to 2 feet Saturday morning.

$$

LC

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

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