853
FZUS63 KMQT 060207
GLFLS

Open Lake Forecast for Lake Superior
National Weather Service Marquette MI
1007 PM EDT Wed Jun 5 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 cold front associated with a 29.2 inch low
over northern Ontario will support troughing of 29.3 inches
across Lake Superior into tonight before the parent low pressure
approaches James Bay early Thursday morning. The troughing over
Lake Superior weakens to 29.6 inches Friday as the low fills to
29.4 inches over southern James Bay. Weak troughing at 29.7 inches
remains in place over Lake Superior Saturday before weak ridging
near 29.8 inches develops over Lake Superior on Sunday as a high
pressure shifts into the Canadian Prairies. The ridge builds to
30.0 inches over Lake Superior Monday.

LSZ162-061015-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
1007 PM EDT Wed Jun 5 2024 /907 PM CDT Wed Jun 5 2024/

.REST OF TONIGHT...Southwest winds 10 to 20 knots veering west
late. A chance of showers. A slight chance of thunderstorms after
midnight. Waves 1 to 3 feet building to 2 to 4 feet.
.THURSDAY...West winds 20 to 30 knots. A chance of showers. Waves
building to 3 to 5 feet occasionally to 7 feet, then subsiding to
2 to 4 feet.
.THURSDAY NIGHT...West winds 15 to 25 knots. A slight chance of
showers after midnight. Waves subsiding to 1 to 3 feet, then
building to 2 to 4 feet.
.FRIDAY...West winds 15 to 25 knots. A slight chance of showers.
Waves building to 3 to 5 feet occasionally to 7 feet, then
subsiding to 2 to 4 feet.
.FRIDAY NIGHT...West winds 15 to 25 knots diminishing to 10 to
20 knots after midnight. Waves subsiding to 1 to 3 feet.
.SATURDAY...West winds 15 to 25 knots. A chance of showers. Waves
building to 2 to 4 feet, then subsiding to 1 to 3 feet.
.SATURDAY NIGHT...West winds 15 to 25 knots veering northwest
after midnight. A chance of showers. Waves subsiding to calm to
2 feet.
.SUNDAY...Northwest winds 10 to 20 knots becoming north 5 to
15 knots. Waves building to 1 to 3 feet, then subsiding to calm
to 2 feet.
.MONDAY...South winds 5 to 15 knots veering west. Waves calm to
2 feet.

$$

LSZ263-061015-
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 PM EDT Wed Jun 5 2024

.REST OF TONIGHT...Southwest winds 5 to 15 knots increasing to
10 to 20 knots after midnight, then veering west late. A slight
chance of showers and thunderstorms. Waves 1 to 3 feet building
to 2 to 4 feet.
.THURSDAY...West winds 15 to 25 knots. A chance of showers. Waves
building to 3 to 6 feet occasionally to 8 feet.
.THURSDAY NIGHT...West winds 15 to 25 knots diminishing to 10 to
20 knots after midnight, then increasing to 15 to 25 knots late.
A slight chance of showers. Waves subsiding to 2 to 4 feet.
.FRIDAY...West winds 15 to 25 knots. A slight chance of showers.
Waves building to 3 to 5 feet occasionally to 7 feet.
.FRIDAY NIGHT...West winds 5 to 15 knots increasing to 10 to
20 knots after midnight. Waves subsiding to 1 to 3 feet.
.SATURDAY...West winds 10 to 20 knots. A chance of showers. Waves
building to 2 to 4 feet.
.SATURDAY NIGHT...West winds 10 to 20 knots veering northwest
after midnight. A chance of showers. Waves subsiding to 1 to
3 feet.
.SUNDAY...Northwest winds 10 to 20 knots becoming north 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.

$$

LSZ264-061015-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
1007 PM EDT Wed Jun 5 2024

.REST OF TONIGHT...Southwest winds 5 to 15 knots veering west
late. A slight chance of rain showers. Patchy fog after midnight.
Waves 1 to 3 feet building to 2 to 4 feet.
.THURSDAY...West winds 15 to 25 knots. A chance of rain showers.
Waves building to 3 to 6 feet occasionally to 8 feet.
.THURSDAY NIGHT...West winds 15 to 25 knots diminishing to 10 to
20 knots after midnight, then increasing to 15 to 25 knots late.
A chance of showers. Waves 3 to 5 feet occasionally to 7 feet.
.FRIDAY...West winds 15 to 25 knots. A chance of showers. Waves
3 to 5 feet occasionally to 7 feet.
.FRIDAY NIGHT...West winds 5 to 15 knots increasing to 10 to
20 knots after midnight. A chance of showers. Waves subsiding to
1 to 3 feet.
.SATURDAY...West winds 10 to 20 knots. A chance of showers. Waves
building to 2 to 4 feet.
.SATURDAY NIGHT...Northwest winds 5 to 15 knots. A chance of
showers. Waves subsiding to 1 to 3 feet.
.SUNDAY...Northwest winds 10 to 20 knots becoming north 5 to
15 knots. Waves 1 to 3 feet.
.MONDAY...North winds 5 to 15 knots backing southwest. Waves
subsiding to calm to 2 feet.

$$

LSZ265-061015-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
1007 PM EDT Wed Jun 5 2024

.REST OF TONIGHT...South winds 10 to 20 knots veering west late.
A chance of showers. A slight chance of thunderstorms after
midnight. Waves calm to 2 feet building to 1 to 3 feet.
.THURSDAY...West winds 10 to 20 knots increasing to 20 to
30 knots. A chance of showers. Waves building to 3 to 5 feet
occasionally to 7 feet.
.THURSDAY NIGHT...West winds 20 to 30 knots diminishing to 15 to
25 knots after midnight, then increasing to 20 to 30 knots late.
A chance of showers. Waves subsiding to 2 to 4 feet, then
building to 3 to 5 feet occasionally to 7 feet.
.FRIDAY...West winds 20 to 30 knots. A chance of showers. Waves
subsiding to 1 to 3 feet.
.FRIDAY NIGHT...West winds 15 to 25 knots diminishing to 10 to
20 knots after midnight. A chance of showers. Waves subsiding to
calm to 2 feet.
.SATURDAY...West winds 15 to 25 knots. A chance of showers. Waves
calm to 2 feet.
.SATURDAY NIGHT...Northwest winds 15 to 25 knots diminishing to
10 to 20 knots after midnight. A chance of showers. Waves calm to
2 feet.
.SUNDAY...Northwest winds 10 to 20 knots. Waves building to 1 to
3 feet.
.MONDAY...North winds 10 to 20 knots becoming southwest 5 to
15 knots. Waves subsiding to calm to 2 feet.

$$

LSZ266-061015-
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-
1007 PM EDT Wed Jun 5 2024

.REST OF TONIGHT...South winds 10 to 20 knots veering southwest
late. A chance of showers and a slight chance of thunderstorms.
Patchy fog after midnight. Waves 1 to 3 feet subsiding to calm to
2 feet, then building to 1 to 3 feet.
.THURSDAY...West winds 10 to 20 knots increasing to 15 to
25 knots late. A chance of rain showers. Waves building to 3 to
6 feet occasionally to 8 feet.
.THURSDAY NIGHT...West winds 15 to 25 knots increasing to 20 to
30 knots late. A chance of showers. Waves building to 4 to 7 feet
occasionally to 9 feet.
.FRIDAY...West winds 20 to 30 knots diminishing to 15 to 25 knots
by mid afternoon. A chance of showers. Waves 4 to 7 feet
occasionally to 9 feet.
.FRIDAY NIGHT...Northwest winds 15 to 25 knots backing west after
midnight. A chance of showers. Waves subsiding to 2 to 4 feet.
.SATURDAY...West winds 15 to 25 knots. A chance of showers. Waves
2 to 4 feet.
.SATURDAY NIGHT...Northwest winds 10 to 20 knots. A chance of
showers. Waves subsiding to 1 to 3 feet.
.SUNDAY...Northwest winds 15 to 25 knots becoming north 10 to
20 knots. Waves building to 2 to 4 feet, then subsiding to 1 to
3 feet.
.MONDAY...Northwest winds 10 to 20 knots becoming west 5 to
15 knots. Waves subsiding to calm to 2 feet.

$$

LSZ267-061015-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
1007 PM EDT Wed Jun 5 2024

.REST OF TONIGHT...Southeast winds 10 to 20 knots veering south
after midnight, then becoming southwest 5 to 15 knots late.
Patchy fog. A chance of showers and thunderstorms. Waves calm to
2 feet.
.THURSDAY...West winds 5 to 15 knots increasing to 10 to 20 knots
in the afternoon. A chance of showers. Waves building to 3 to
5 feet occasionally to 7 feet.
.THURSDAY NIGHT...West winds 15 to 25 knots. A chance of showers.
Waves building to 4 to 7 feet occasionally to 9 feet.
.FRIDAY...West winds 20 to 30 knots diminishing to 15 to 25 knots
by mid afternoon. A chance of showers. Waves building to 5 to
8 feet occasionally to 10 feet.
.FRIDAY NIGHT...West winds 15 to 25 knots diminishing to 10 to
20 knots after midnight. A chance of showers. Waves subsiding to
2 to 4 feet.
.SATURDAY...West winds 10 to 20 knots increasing to 15 to
25 knots by mid afternoon. A chance of showers. Waves 2 to
4 feet.
.SATURDAY NIGHT...West winds 10 to 20 knots veering northwest
after midnight. A chance of showers. Waves subsiding to 1 to
3 feet.
.SUNDAY...Northwest winds 10 to 20 knots veering north. Waves
1 to 3 feet.
.MONDAY...Northwest winds 10 to 20 knots becoming southwest 5 to
15 knots. Waves subsiding to calm to 2 feet.

$$
LSZ261-061015-
MAFOR 0603/
Superior West 11520 12620 14630 11630. A chance of showers
Thursday morning. Waves 2 to 4 feet overnight. Waves 3 to 5 feet
Thursday and Thursday evening.

Superior North Central 12510 12620 14630. A chance of showers
Thursday. Waves 2 to 4 feet overnight then building to 3 to 5
feet Thursday. Waves 3 to 6 feet Thursday evening.

Superior South Central 11400 11510 11610 12620 13630. A chance of
showers through Thursday evening. Waves 1 to 2 feet overnight then
building to 2 to 4 feet Thursday. Waves 3 to 5 feet Thursday
evening.

Superior East 11410 11400 11500 13610 12620. A chance of showers
overnight and Thursday evening. Waves 1 to 2 feet overnight then
building to 2 to 4 feet Thursday. Waves 3 to 6 feet Thursday
evening.

$$

JSS

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

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