297
FZUS63 KMQT 291356
GLFLS

Open Lake Forecast for Lake Superior
National Weather Service Marquette MI
956 AM EDT Sat Jun 29 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 29.6 inch low pressure currently over eastern Lake
Superior heads east toward southern Quebec through this evening
while a 30.2 inch high pressure shifts east over the Northern
Plains. The high will then build to 30.3 inches as it moves east,
reaching the western Great Lakes Sunday morning. As the high
weakens to 30.2 inches while moving to the Lower Great Lakes by
Monday evening, a 29.5 inch low will develop in the Northern
Plains. The low lifts into into northern Ontario by Tuesday
evening then pulls a 29.7 inch trough through Lake Superior late
Tuesday night. 29.9 inch high pressure begins to build in the
middle Mississippi River Valley Wednesday.

LSZ162-292200-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
956 AM EDT Sat Jun 29 2024 /856 AM CDT Sat Jun 29 2024/

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

$$

LSZ263-292200-
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-
956 AM EDT Sat Jun 29 2024

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

$$

LSZ264-292200-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
956 AM EDT Sat Jun 29 2024

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

$$

LSZ265-292200-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
956 AM EDT Sat Jun 29 2024

.REST OF TODAY...Northwest winds 10 to 20 knots increasing to
20 to 30 knots. A slight chance of showers. A slight chance of
thunderstorms by mid afternoon. Waves calm to 2 feet building to
3 to 6 feet occasionally to 8 feet.
.TONIGHT...Northwest winds 20 to 30 knots diminishing to 10 to
20 knots. A slight chance of showers through midnight. Waves
building to 4 to 7 feet occasionally to 9 feet, then subsiding to
3 to 5 feet occasionally to 7 feet.
.SUNDAY...Northwest winds 5 to 15 knots backing west late. Waves
subsiding to calm to 2 feet.
.SUNDAY NIGHT...West winds 5 to 15 knots. Waves calm to 2 feet.
.MONDAY...South winds 5 to 15 knots becoming southeast 15 to
25 knots by mid afternoon. Waves calm to 2 feet.
.MONDAY NIGHT...South winds 15 to 25 knots. Showers likely after
midnight. Waves building to 1 to 3 feet.
.TUESDAY...South winds 15 to 25 knots diminishing to 10 to
20 knots. Showers likely. Waves building to 2 to 4 feet, then
subsiding to calm to 2 feet.
.WEDNESDAY...West winds 10 to 20 knots diminishing to 5 to
15 knots. Waves calm to 2 feet.

$$

LSZ266-292200-
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-
956 AM EDT Sat Jun 29 2024

.REST OF TODAY...West winds 10 to 20 knots becoming northwest
15 to 25 knots in the afternoon, then increasing to 20 to
30 knots late. A slight chance of showers and thunderstorms by
late morning. Waves calm to 2 feet building to 4 to 7 feet
occasionally to 9 feet.
.TONIGHT...North winds 20 to 30 knots diminishing to 15 to
25 knots after midnight. A slight chance of showers. Waves
building to 5 to 8 feet occasionally to 10 feet, then subsiding
to 3 to 6 feet occasionally to 8 feet.
.SUNDAY...Northwest winds 10 to 20 knots backing west late. Waves
subsiding to 1 to 3 feet.
.SUNDAY NIGHT...West winds 5 to 15 knots. Waves subsiding to calm
to 2 feet.
.MONDAY...South winds 5 to 15 knots becoming southeast 10 to
20 knots by mid afternoon. Waves calm to 2 feet.
.MONDAY NIGHT...South winds 10 to 20 knots increasing to 15 to
25 knots after midnight. A chance of showers after midnight.
Waves building to 3 to 5 feet occasionally to 7 feet.
.TUESDAY...South winds 20 to 30 knots diminishing to 10 to
20 knots. Showers likely. A chance of showers. Waves building to
3 to 6 feet occasionally to 8 feet, then subsiding to 1 to
3 feet.
.WEDNESDAY...West winds 10 to 20 knots diminishing to 5 to
15 knots. Waves building to 2 to 4 feet, then subsiding to calm
to 2 feet.

$$

LSZ267-292200-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
956 AM EDT Sat Jun 29 2024

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

$$
LSZ261-292200-
MAFOR 2915/
Superior West 11610 11720 11820 12710 13700. A chance of showers
this afternoon. Waves 1 to 3 feet.

Superior North Central 12730 12830 11720 13710. A chance of
showers this afternoon. Waves 1 to 3 feet building to 3 to 6 feet
this afternoon. Waves then subside to 1 to 4 feet tonight and Sunday
morning.

Superior South Central 11720 11730 12740 12730 12720. Waves 1 to
4 feet this afternoon. Waves 2 to 6 feet tonight through Sunday
morning.

Superior East 11610 11620 11730 11740 12830 12820. A chance of
showers late this morning and this evening. Waves 1 to 4 feet
this afternoon. Waves 3 to 7 feet tonight and Sunday morning.

$$

Jablonski

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

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