400
FZUS63 KMQT 151336
GLFLS

Open Lake Forecast for Lake Superior
National Weather Service Marquette MI
936 AM EDT Sat Jun 15 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...High pressure will build to 30.2 inches as it shifts
over the central Great Lakes today, continuing on toward New
England Sunday. Deepening low pressure near 29.4 inches tracks out
of the High Plains Saturday night, spinning northeast towards
northern Manitoba Sunday into Monday as it deepens to 29.0
inches. This low extends a 29.6 inch trough over Lake Superior
Sunday night before weak ridging of 29.9 inches moves over Lake
Superior from the Northern Plains Monday. A low pressure around
29.3 inches looks to move off the Colorado Rockies into the
Northern Plains early next week. The low will track across
northern Minnesota at 29.5 inches Tuesday, reaching James Bay Wednesday
morning. This low will pull a 29.8 inch trough through Lake
Superior Wednesday morning.

LSZ162-152145-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
936 AM EDT Sat Jun 15 2024 /836 AM CDT Sat Jun 15 2024/

.REST OF TODAY...East winds 5 to 15 knots increasing to 10 to
20 knots late. A slight chance of showers by late morning. Waves
calm to 2 feet.
.TONIGHT...East winds 10 to 20 knots increasing to 15 to 25 knots
late. A chance of showers through midnight. A chance of
thunderstorms. Showers likely after midnight. Waves building to
1 to 3 feet.
.SUNDAY...East winds 10 to 20 knots. A chance of showers and
thunderstorms. Waves building to 2 to 4 feet, then subsiding to
calm to 2 feet.
.SUNDAY NIGHT...Northeast winds 10 to 20 knots becoming west 5 to
15 knots after midnight. A chance of showers and thunderstorms.
Waves calm to 2 feet.
.MONDAY...West winds 5 to 15 knots becoming northeast 10 to
20 knots by mid afternoon. A chance of showers through early
afternoon. A chance of thunderstorms. Showers likely by mid
afternoon. Waves calm to 2 feet.
.MONDAY NIGHT...Northeast winds 10 to 20 knots veering east after
midnight. Thunderstorms likely through midnight. Showers likely.
A chance of thunderstorms after midnight. Waves calm to 2 feet.
.TUESDAY...South winds 10 to 20 knots veering west. Showers
likely and a chance of thunderstorms. Waves building to 1 to
3 feet, then subsiding to calm to 2 feet.
.WEDNESDAY...West winds 10 to 20 knots becoming north 5 to
15 knots. A chance of showers. Waves calm to 2 feet.

$$

LSZ263-152145-
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-
936 AM EDT Sat Jun 15 2024

.REST OF TODAY...South winds 5 to 15 knots backing east late. A
slight chance of showers by late morning. Waves calm to 2 feet.
.TONIGHT...South winds 5 to 15 knots becoming southeast 10 to
20 knots after midnight, then increasing to 15 to 25 knots late.
A chance of showers through midnight, then showers and a slight
chance of thunderstorms after midnight. Waves building to 2 to
4 feet.
.SUNDAY...Southeast winds 15 to 25 knots becoming south 10 to
20 knots in the afternoon, then becoming southeast 5 to 15 knots
late. A chance of showers and a slight chance of thunderstorms.
Waves building to 3 to 5 feet occasionally to 7 feet, then
subsiding to 1 to 3 feet.
.SUNDAY NIGHT...Southeast winds 5 to 15 knots veering west after
midnight. A chance of showers and thunderstorms. Waves subsiding
to calm to 2 feet.
.MONDAY...West winds 5 to 15 knots backing east by mid afternoon.
A chance of showers through early afternoon. A chance of
thunderstorms. Showers likely by mid afternoon. Waves calm to
2 feet.
.MONDAY NIGHT...East winds 5 to 15 knots. Showers likely through
midnight. A chance of thunderstorms. A chance of showers after
midnight. Waves calm to 2 feet.
.TUESDAY...South winds 10 to 20 knots diminishing to 5 to
15 knots. A chance of showers and thunderstorms. Waves building
to 1 to 3 feet.
.WEDNESDAY...West winds 5 to 15 knots veering north. A chance of
showers. Waves subsiding to calm to 2 feet.

$$

LSZ264-152145-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
936 AM EDT Sat Jun 15 2024

.REST OF TODAY...South winds 10 to 20 knots becoming southeast
5 to 15 knots in the afternoon, then increasing to 10 to 20 knots
late. Waves 1 to 3 feet building to 2 to 4 feet.
.TONIGHT...South winds 10 to 20 knots becoming southeast 15 to
25 knots late. A chance of showers. Waves building to 3 to 5 feet
occasionally to 7 feet, then subsiding to 2 to 4 feet.
.SUNDAY...Southeast winds 15 to 25 knots diminishing to 10 to
20 knots late. A chance of showers and a slight chance of
thunderstorms. Waves building to 3 to 6 feet occasionally to
8 feet.
.SUNDAY NIGHT...South winds 5 to 15 knots veering southwest after
midnight. A slight chance of showers and thunderstorms. Waves
subsiding to calm to 2 feet.
.MONDAY...Southwest winds 5 to 15 knots backing southeast by mid
afternoon. A chance of showers. Waves calm to 2 feet.
.MONDAY NIGHT...East winds 5 to 15 knots veering southeast after
midnight. A chance of showers and thunderstorms. Waves calm to
2 feet.
.TUESDAY...South winds 10 to 20 knots diminishing to 5 to
15 knots. A chance of showers and thunderstorms. Waves building
to 1 to 3 feet.
.WEDNESDAY...West winds 5 to 15 knots veering north. A chance of
showers. Waves subsiding to calm to 2 feet.

$$

LSZ265-152145-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
936 AM EDT Sat Jun 15 2024

.REST OF TODAY...Southeast winds 10 to 20 knots increasing to
15 to 25 knots in the afternoon. A slight chance of showers by
late morning. Waves calm to 2 feet building to 1 to 3 feet.
.TONIGHT...South winds 15 to 25 knots becoming southeast 20 to
30 knots late. A slight chance of showers through midnight, then
showers after midnight. Waves building to 2 to 4 feet, then
subsiding to 1 to 3 feet.
.SUNDAY...Southeast winds 20 to 30 knots diminishing to 15 to
25 knots late. Showers through early afternoon. A slight chance
of thunderstorms. A chance of showers by mid afternoon. Waves
subsiding to 1 to 3 feet.
.SUNDAY NIGHT...South winds 10 to 20 knots becoming southwest
5 to 15 knots after midnight. A chance of showers and
thunderstorms. Waves subsiding to calm to 2 feet.
.MONDAY...West winds 5 to 15 knots becoming east 10 to 20 knots
by mid afternoon. A chance of showers and thunderstorms. Waves
calm to 2 feet.
.MONDAY NIGHT...Southeast winds 10 to 20 knots veering south
after midnight. A chance of showers and thunderstorms. Waves calm
to 2 feet.
.TUESDAY...South winds 15 to 25 knots diminishing to 10 to
20 knots. A chance of showers and thunderstorms. Waves calm to
2 feet.
.WEDNESDAY...West winds 10 to 20 knots becoming northwest 5 to
15 knots. A chance of showers. Waves calm to 2 feet.

$$

LSZ266-152145-
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-
936 AM EDT Sat Jun 15 2024

.REST OF TODAY...South winds 10 to 20 knots backing southeast in
the afternoon, then increasing to 15 to 25 knots late. A slight
chance of showers by late morning. Waves 1 to 3 feet building to
2 to 4 feet.
.TONIGHT...South winds 15 to 25 knots backing southeast late.
Showers after midnight. Waves building to 3 to 5 feet
occasionally to 7 feet, then subsiding to 2 to 4 feet.
.SUNDAY...Southeast winds 20 to 30 knots veering south in the
afternoon, then diminishing to 15 to 25 knots late. Showers
through early afternoon. A chance of thunderstorms. A chance of
showers by mid afternoon. Waves building to 3 to 6 feet
occasionally to 8 feet.
.SUNDAY NIGHT...South winds 10 to 20 knots diminishing to 5 to
15 knots after midnight. A chance of showers and thunderstorms.
Waves subsiding to calm to 2 feet.
.MONDAY...West winds 5 to 15 knots becoming east 10 to 20 knots
by mid afternoon. A chance of showers and thunderstorms. Waves
calm to 2 feet.
.MONDAY NIGHT...Southeast winds 10 to 20 knots veering south
after midnight. A chance of showers and thunderstorms. Waves
building to 1 to 3 feet.
.TUESDAY...South winds 15 to 25 knots diminishing to 10 to
20 knots. A chance of showers. A chance of thunderstorms. Waves
building to 2 to 4 feet, then subsiding to 1 to 3 feet.
.WEDNESDAY...West winds 10 to 20 knots becoming northwest 5 to
15 knots. A chance of showers. Waves subsiding to calm to 2 feet.

$$

LSZ267-152145-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
936 AM EDT Sat Jun 15 2024

.REST OF TODAY...Southeast winds 10 to 20 knots. Waves calm to
2 feet.
.TONIGHT...South winds 10 to 20 knots becoming southeast 15 to
25 knots late. A chance of showers after midnight. Waves building
to 2 to 4 feet.
.SUNDAY...Southeast winds 20 to 30 knots becoming south 15 to
25 knots late. Showers and a slight chance of thunderstorms.
Waves building to 3 to 5 feet occasionally to 7 feet, then
subsiding to 2 to 4 feet.
.SUNDAY NIGHT...South winds 10 to 20 knots. A chance of showers
and thunderstorms. Waves subsiding to calm to 2 feet.
.MONDAY...Southwest winds 10 to 20 knots backing south by mid
afternoon. A chance of showers and thunderstorms. Waves calm to
2 feet.
.MONDAY NIGHT...Southeast winds 10 to 20 knots veering south
after midnight. A chance of showers and thunderstorms. Waves calm
to 2 feet.
.TUESDAY...South winds 15 to 25 knots. A chance of showers and
thunderstorms. Waves building to 2 to 4 feet, then subsiding to
1 to 3 feet.
.WEDNESDAY...West winds 10 to 20 knots becoming northwest 5 to
15 knots. A chance of showers and thunderstorms. Waves subsiding
to calm to 2 feet.

$$
LSZ261-152145-
MAFOR 1515/
Superior West 11200 12210 11310 11320 12326 11320. A chance of
thunderstorms overnight and Sunday morning. Waves 1 to 3 feet.

Superior North Central 11420 12320 11330 12430 12346. Waves 1 to
3 feet this afternoon. Waves 2 to 4 feet tonight. Waves 3 to 6
feet Sunday morning.

Superior South Central 13320 12420 11326 12336. Waves 1 to 3 feet
this afternoon. Waves 2 to 4 feet subsiding to 1 to 3 feet
tonight. Waves 2 to 4 feet Sunday morning.

Superior East 13310 12420 11320 11330 11336. Waves 1 to 3 feet
this afternoon and tonight. Waves 3 to 5 feet Sunday morning.

$$

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