070
FZUS63 KMQT 070205
GLFLS

Open Lake Forecast for Lake Superior
National Weather Service Marquette MI
1005 PM EDT Thu Jun 6 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 by Friday 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.

LSZ162-071015-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
1005 PM EDT Thu Jun 6 2024 /905 PM CDT Thu Jun 6 2024/

.REST OF TONIGHT...West winds 10 to 20 knots increasing to 15 to
25 knots after midnight. Waves 1 to 3 feet building to 2 to
4 feet.
.FRIDAY...West winds 15 to 25 knots. Waves subsiding to 1 to
3 feet.
.FRIDAY NIGHT...West winds 10 to 20 knots. A slight chance of
rain showers after midnight. Waves subsiding to calm to 2 feet.
.SATURDAY...West winds 10 to 20 knots. A chance of rain showers.
A slight chance of thunderstorms by mid afternoon. Waves building
to 1 to 3 feet.
.SATURDAY NIGHT...West winds 10 to 20 knots veering northwest
after midnight. Waves subsiding to calm to 2 feet.
.SUNDAY...Northwest winds 10 to 20 knots. Waves calm to 2 feet.
.SUNDAY NIGHT...North winds 5 to 15 knots. Waves calm to 2 feet.
.MONDAY...Northeast winds 5 to 15 knots. Waves calm to 2 feet.
.TUESDAY...South winds 5 to 15 knots becoming southwest 10 to
20 knots. A chance of showers. Waves calm to 2 feet.

$$

LSZ263-071015-
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-
1005 PM EDT Thu Jun 6 2024

.REST OF TONIGHT...West winds 10 to 20 knots. A slight chance of
showers. Waves 3 to 5 feet occasionally to 7 feet subsiding to
2 to 4 feet, then building to 3 to 5 feet occasionally to 7 feet.
.FRIDAY...West winds 15 to 25 knots. Waves subsiding to 2 to
4 feet.
.FRIDAY NIGHT...West winds 5 to 15 knots. A slight chance of rain
showers after midnight. Waves subsiding to calm to 2 feet.
.SATURDAY...West winds 10 to 20 knots. A slight chance of rain
showers. Waves building to 1 to 3 feet.
.SATURDAY NIGHT...West winds 5 to 15 knots becoming northwest
10 to 20 knots after midnight. Waves 1 to 3 feet.
.SUNDAY...Northwest winds 10 to 20 knots. Waves subsiding to calm
to 2 feet.
.SUNDAY NIGHT...Northwest winds 5 to 15 knots veering north after
midnight. Waves calm to 2 feet.
.MONDAY...North winds 5 to 15 knots veering south. Waves calm to
2 feet.
.TUESDAY...South winds 5 to 15 knots veering southwest. A chance
of showers. Waves calm to 2 feet.

$$

LSZ264-071015-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
1005 PM EDT Thu Jun 6 2024

.REST OF TONIGHT...West winds 10 to 20 knots. A chance of
showers. Waves 3 to 5 feet occasionally to 7 feet.
.FRIDAY...West winds 15 to 25 knots. A slight chance of showers
through early afternoon. Waves subsiding to 2 to 4 feet.
.FRIDAY NIGHT...West winds 5 to 15 knots. Waves subsiding to calm
to 2 feet.
.SATURDAY...West winds 10 to 20 knots. A slight chance of rain
showers. Waves building to 1 to 3 feet.
.SATURDAY NIGHT...West winds 5 to 15 knots veering northwest
after midnight. Waves 1 to 3 feet.
.SUNDAY...Northwest winds 10 to 20 knots. 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.

$$

LSZ265-071015-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
1005 PM EDT Thu Jun 6 2024

.REST OF TONIGHT...West winds 15 to 25 knots. A slight chance of
showers. Waves 2 to 4 feet.
.FRIDAY...West winds 20 to 30 knots diminishing to 15 to 25 knots
late. Waves subsiding to calm to 2 feet.
.FRIDAY NIGHT...West winds 10 to 20 knots. A slight chance of
showers after midnight. Waves 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 veering northwest
after midnight. Waves calm to 2 feet.
.SUNDAY...Northwest winds 10 to 20 knots increasing to 15 to
25 knots by mid afternoon. 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 south 5 to
15 knots. Waves calm to 2 feet.
.TUESDAY...South winds 5 to 15 knots becoming southwest 10 to
20 knots. A chance of showers. Waves calm to 2 feet.

$$

LSZ266-071015-
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-
1005 PM EDT Thu Jun 6 2024

.REST OF TONIGHT...West winds 15 to 25 knots increasing to 20 to
30 knots late. A chance of showers. Waves 3 to 6 feet
occasionally to 8 feet.
.FRIDAY...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 through early afternoon. Waves building
to 4 to 7 feet occasionally to 9 feet, then subsiding to 3 to
5 feet occasionally to 7 feet.
.FRIDAY NIGHT...Northwest winds 10 to 20 knots backing west after
midnight. Waves subsiding to calm to 2 feet.
.SATURDAY...West winds 10 to 20 knots. A slight chance of rain
showers. Waves calm to 2 feet.
.SATURDAY NIGHT...West winds 10 to 20 knots veering northwest
after midnight. Waves building to 1 to 3 feet.
.SUNDAY...Northwest winds 15 to 25 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. A chance of showers. Waves calm to 2 feet.

$$

LSZ267-071015-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
1005 PM EDT Thu Jun 6 2024

.REST OF TONIGHT...West winds 10 to 20 knots increasing to 15 to
25 knots late. Showers likely. Waves 1 to 3 feet building to 3 to
6 feet occasionally to 8 feet.
.FRIDAY...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. Waves subsiding to 3 to 6 feet
occasionally to 8 feet, then building to 4 to 7 feet occasionally
to 9 feet.
.FRIDAY NIGHT...West winds 15 to 25 knots diminishing to 10 to
20 knots after midnight. 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 veering northwest
after midnight. 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...Southeast winds 5 to 15 knots becoming south 10 to
20 knots. A chance of showers. Waves calm to 2 feet.

$$
LSZ261-071015-
MAFOR 0703/
Superior West 15620 11620 11610. Waves 2 to 4 feet overnight and
Friday subsiding to 1 to 3 feet Friday evening.

Superior North Central 12620 14630 11620 11610. A chance of
showers overnight and Friday morning. Waves 2 to 5 feet.

Superior South Central 15630 11620 11710. Waves 2 to 5 feet
overnight and Friday subsiding to 1 to 3 feet Friday evening.

Superior East 11636 14630 11630 11620 11720. Waves 3 to 7 feet.

$$

JSS

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

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