968
FZUS63 KMQT 111343
GLFLS

Open Lake Forecast for Lake Superior
National Weather Service Marquette MI
943 AM EDT Tue Jun 11 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...A 30.0 inch high pressure currently centered over the
Upper Great Lakes this morning will continue to drift southeast
toward the lower lakes through early this afternoon. A 29.5 inch
low pressure system near Lake Winnipeg this morning will move to
near James Bay by Wednesday evening, dragging a 29.7 inch trough
over Lake Superior tonight and another 29.5 inch trough Thursday
morning. 30.1 inch ridging moves into the High Plains late
Thursday into Friday, becoming centered over Lake Superior on
Friday afternoon. High pressure builds to 30.2 inches and moves
over the central Great Lakes Saturday. This high will continue
shifting east toward New England on Sunday as troughing sets up
west of Lake Superior.

LSZ162-112145-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
943 AM EDT Tue Jun 11 2024 /843 AM CDT Tue Jun 11 2024/

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

$$

LSZ263-112145-
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-
943 AM EDT Tue Jun 11 2024

.REST OF TODAY...South winds 5 to 15 knots. A chance of showers.
Waves calm to 2 feet.
.TONIGHT...South winds 5 to 15 knots veering southwest after
midnight. A slight chance of thunderstorms through midnight. A
slight chance of showers. Waves building to 1 to 3 feet.
.WEDNESDAY...Southwest winds 10 to 20 knots. A chance of showers
and a slight chance of thunderstorms by mid afternoon. Waves
building to 2 to 4 feet, then subsiding to 1 to 3 feet.
.WEDNESDAY NIGHT...Southwest winds 10 to 20 knots. Showers likely
through midnight. A chance of thunderstorms. A slight chance of
showers after midnight. Waves subsiding to calm to 2 feet, then
building to 1 to 3 feet.
.THURSDAY...West winds 15 to 25 knots. Waves building to 2 to
4 feet, then subsiding to 1 to 3 feet.
.THURSDAY NIGHT...West winds 5 to 15 knots veering northwest
after midnight. Waves subsiding to calm to 2 feet.
.FRIDAY...Southwest winds 5 to 15 knots backing south. Waves calm
to 2 feet.
.SATURDAY...Southeast winds 5 to 15 knots increasing to 10 to
20 knots. Showers likely. Waves building to 1 to 3 feet.

$$

LSZ264-112145-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
943 AM EDT Tue Jun 11 2024

.REST OF TODAY...Southeast winds 5 to 15 knots veering south
late. A chance of showers by mid afternoon. Waves calm to 2 feet
building to 1 to 3 feet.
.TONIGHT...South winds 10 to 20 knots becoming southwest 5 to
15 knots late. A chance of showers. Waves building to 2 to
4 feet, then subsiding to 1 to 3 feet.
.WEDNESDAY...Southwest winds 10 to 20 knots. A chance of showers
and a slight chance of thunderstorms by mid afternoon. Waves 1 to
3 feet.
.WEDNESDAY NIGHT...South winds 5 to 15 knots becoming southwest
10 to 20 knots after midnight. Showers likely through midnight. A
chance of thunderstorms. A chance of showers after midnight.
Waves subsiding to calm to 2 feet.
.THURSDAY...West winds 15 to 25 knots. Waves building to 1 to
3 feet.
.THURSDAY NIGHT...Northwest winds 5 to 15 knots. Waves subsiding
to calm to 2 feet.
.FRIDAY...Southwest winds 5 to 15 knots backing south. Waves calm
to 2 feet.
.SATURDAY...Southeast winds 5 to 15 knots increasing to 10 to
20 knots. A chance of showers. Waves building to 1 to 3 feet.

$$

LSZ265-112145-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
943 AM EDT Tue Jun 11 2024

.REST OF TODAY...Southeast winds 10 to 20 knots veering south
late. A chance of showers by mid afternoon. Waves calm to 2 feet
building to 1 to 3 feet.
.TONIGHT...South winds 10 to 20 knots veering southwest late. A
chance of showers. Waves subsiding to calm to 2 feet.
.WEDNESDAY...Southwest winds 10 to 20 knots backing south late. A
slight chance of showers and thunderstorms by mid afternoon.
Waves calm to 2 feet.
.WEDNESDAY NIGHT...South winds 10 to 20 knots becoming southwest
15 to 25 knots after midnight. Showers likely through midnight. A
chance of thunderstorms. A chance of showers after midnight.
Waves calm to 2 feet.
.THURSDAY...West winds 15 to 25 knots. Waves calm to 2 feet.
.THURSDAY NIGHT...Northwest winds 10 to 20 knots backing west
after midnight. Waves calm to 2 feet.
.FRIDAY...Northwest winds 10 to 20 knots becoming south 5 to
15 knots. Waves calm to 2 feet.
.SATURDAY...Southeast winds 5 to 15 knots increasing to 15 to
25 knots. A chance of showers. Waves calm to 2 feet.

$$

LSZ266-112145-
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-
943 AM EDT Tue Jun 11 2024

.REST OF TODAY...South winds 5 to 15 knots backing southeast in
the afternoon, then increasing to 10 to 20 knots late. A chance
of showers by mid afternoon. Waves calm to 2 feet building to
1 to 3 feet.
.TONIGHT...South winds 15 to 25 knots diminishing to 10 to
20 knots after midnight. A chance of showers. Waves building to
2 to 4 feet, then subsiding to 1 to 3 feet.
.WEDNESDAY...South winds 10 to 20 knots. A slight chance of
showers and thunderstorms by mid afternoon. Waves subsiding to
calm to 2 feet.
.WEDNESDAY NIGHT...South winds 10 to 20 knots becoming southwest
15 to 25 knots after midnight. Showers likely and a chance of
thunderstorms. Waves calm to 2 feet.
.THURSDAY...West winds 15 to 25 knots. Waves building to 1 to
3 feet.
.THURSDAY NIGHT...Northwest winds 10 to 20 knots. Waves subsiding
to calm to 2 feet.
.FRIDAY...Northwest winds 5 to 15 knots backing south. Waves calm
to 2 feet.
.SATURDAY...Southeast winds 5 to 15 knots increasing to 15 to
25 knots. A chance of showers. Waves building to 1 to 3 feet.

$$

LSZ267-112145-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
943 AM EDT Tue Jun 11 2024

.REST OF TODAY...South winds 5 to 15 knots backing east in the
afternoon, then becoming southeast 10 to 20 knots late. A slight
chance of showers by mid afternoon. Waves calm to 2 feet.
.TONIGHT...South winds 10 to 20 knots. A chance of showers. Waves
building to 1 to 3 feet.
.WEDNESDAY...South winds 10 to 20 knots. A slight chance of
showers and thunderstorms by mid afternoon. Waves subsiding to
calm to 2 feet.
.WEDNESDAY NIGHT...South winds 10 to 20 knots. A chance of
showers through midnight. A chance of thunderstorms. Showers
likely after midnight. Waves calm to 2 feet.
.THURSDAY...Southwest winds 15 to 25 knots veering west by mid
afternoon. A chance of showers. Waves calm to 2 feet.
.THURSDAY NIGHT...Northwest winds 10 to 20 knots. Waves calm to
2 feet.
.FRIDAY...Northwest winds 10 to 20 knots becoming south 5 to
15 knots. Waves calm to 2 feet.
.SATURDAY...Southeast winds 5 to 15 knots increasing to 15 to
25 knots. A chance of showers. Waves building to 1 to 3 feet.

$$
LSZ261-112145-
MAFOR 1115/
Superior West 11410 11416 12410 14510. Waves 1 to 2 feet.

Superior North Central 12320 13420 11520 11510 11520. A chance of
showers this evening. Waves 1 to 3 feet.

Superior South Central 12320 13420 11410 12510. A chance of
showers this afternoon and evening. Waves 1 to 3 feet this
afternoon and tonight. Waves 1 foot or less Wednesday morning.

Superior East 11300 12310 14420 11410. A chance of showers
tonight. Waves 1 to 3 feet.

$$

WFO MQT

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

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