488
FZUS63 KMQT 271357
GLFLS

Open Lake Forecast for Lake Superior
National Weather Service Marquette MI
957 AM EDT Mon May 27 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 29.5 inch low over central Lower Michigan will
deepen to 29.4 inches while it slowly tracks eastward, moving into
Quebec by Tuesday morning. In its wake, a 30.3 inch high pressure
builds over the Northern Plains on Tuesday. This high pressure
parks over the Upper Great Lakes Wednesday and stays put through
Thursday. The high begins to slowly move towards the rest of the
lower Great Lakes region Friday.



LSZ162-272200-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
957 AM EDT Mon May 27 2024 /857 AM CDT Mon May 27 2024/

.REST OF TODAY...Southwest winds 5 to 15 knots veering west in
the afternoon. Patchy fog by late morning. Waves calm to 2 feet.
.TONIGHT...West winds 10 to 20 knots veering northwest after
midnight. A chance of showers. Waves calm to 2 feet.
.TUESDAY...Northwest winds 10 to 20 knots backing west in the
afternoon, then veering northwest late. A chance of showers. A
slight chance of thunderstorms by mid afternoon. Waves calm to
2 feet.
.TUESDAY NIGHT...North winds 5 to 15 knots. Waves calm to 2 feet.
.WEDNESDAY...Northeast winds 5 to 15 knots veering south by mid
afternoon. Waves calm to 2 feet.
.WEDNESDAY NIGHT...East winds 5 to 15 knots backing northeast
after midnight. Waves calm to 2 feet.
.THURSDAY...East winds 5 to 15 knots increasing to 10 to
20 knots. Waves calm to 2 feet.
.FRIDAY...East winds 10 to 20 knots veering south. A chance of
showers. Waves calm to 2 feet.

$$

LSZ263-272200-
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-
957 AM EDT Mon May 27 2024

.REST OF TODAY...North winds 5 to 15 knots backing west in the
afternoon. Patchy fog. Waves calm to 2 feet.
.TONIGHT...West winds 5 to 15 knots veering northwest after
midnight, then increasing to 10 to 20 knots late. A chance of
showers after midnight. Waves calm to 2 feet.
.TUESDAY...Northwest winds 5 to 15 knots increasing to 10 to
20 knots in the afternoon. A chance of showers. Waves calm to
2 feet.
.TUESDAY NIGHT...North winds 5 to 15 knots. Waves calm to 2 feet.
.WEDNESDAY...North winds 5 to 15 knots backing southwest by mid
afternoon. Waves calm to 2 feet.
.WEDNESDAY NIGHT...West winds 5 to 15 knots diminishing to less
than 10 knots after midnight. Waves calm to 2 feet.
.THURSDAY...East winds 5 to 15 knots veering south. Waves calm to
2 feet.
.FRIDAY...South winds 5 to 15 knots. Waves calm to 2 feet.

$$

LSZ264-272200-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
957 AM EDT Mon May 27 2024

.REST OF TODAY...North winds 5 to 15 knots becoming northwest
10 to 20 knots in the afternoon, then backing west late. Isolated
showers by late morning. Waves 1 to 3 feet.
.TONIGHT...West winds 10 to 20 knots veering northwest after
midnight. A slight chance of showers after midnight. Waves
building to 2 to 4 feet.
.TUESDAY...Northwest winds 10 to 20 knots veering north late. A
slight chance of showers. Waves subsiding to 1 to 3 feet.
.TUESDAY NIGHT...North winds 5 to 15 knots. Waves subsiding to
calm to 2 feet.
.WEDNESDAY...North winds 5 to 15 knots backing west by mid
afternoon. Waves calm to 2 feet.
.WEDNESDAY NIGHT...West winds 5 to 15 knots diminishing to less
than 10 knots after midnight. Waves calm to 2 feet.
.THURSDAY...South winds 5 to 15 knots. Waves calm to 2 feet.
.FRIDAY...South winds 5 to 15 knots. Waves calm to 2 feet.

$$

LSZ265-272200-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
957 AM EDT Mon May 27 2024

.REST OF TODAY...North winds 15 to 25 knots backing northwest
late. Isolated showers. Waves 3 to 5 feet occasionally to 7 feet
subsiding to 1 to 3 feet.
.TONIGHT...Northwest winds 15 to 25 knots. A slight chance of
showers through midnight. Waves 1 to 3 feet.
.TUESDAY...Northwest winds 15 to 25 knots. A chance of showers.
Waves 1 to 3 feet.
.TUESDAY NIGHT...North winds 10 to 20 knots. Waves 1 to 3 feet.
.WEDNESDAY...North winds 10 to 20 knots backing northwest by mid
afternoon. Waves subsiding to calm to 2 feet.
.WEDNESDAY NIGHT...West winds 5 to 15 knots. Waves calm to
2 feet.
.THURSDAY...East winds 5 to 15 knots veering south. Waves calm to
2 feet.
.FRIDAY...Southeast winds 10 to 20 knots veering south. Waves
calm to 2 feet.

$$

LSZ266-272200-
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-
957 AM EDT Mon May 27 2024

.REST OF TODAY...Northeast winds 15 to 25 knots backing north in
the afternoon, then becoming northwest 20 to 30 knots late.
Scattered showers. Waves 3 to 6 feet occasionally to 8 feet
subsiding to 2 to 4 feet.
.TONIGHT...Northwest winds 20 to 30 knots diminishing to 15 to
25 knots late. A slight chance of showers through midnight. Waves
building to 3 to 6 feet occasionally to 8 feet.
.TUESDAY...Northwest winds 15 to 25 knots. A slight chance of
showers. Waves subsiding to 2 to 4 feet.
.TUESDAY NIGHT...North winds 10 to 20 knots. Waves subsiding to
1 to 3 feet.
.WEDNESDAY...North winds 10 to 20 knots backing northwest by mid
afternoon. Waves subsiding to calm to 2 feet, then building to
1 to 3 feet.
.WEDNESDAY NIGHT...Northwest winds 5 to 15 knots. Waves subsiding
to calm to 2 feet.
.THURSDAY...Northwest winds 5 to 15 knots backing south. Waves
calm to 2 feet.
.FRIDAY...South winds 10 to 20 knots. Waves calm to 2 feet.

$$

LSZ267-272200-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
957 AM EDT Mon May 27 2024

.REST OF TODAY...North winds 20 to 30 knots backing northwest
late. Showers by late morning, then scattered showers by mid
afternoon. Waves 3 to 5 feet occasionally to 7 feet subsiding to
2 to 4 feet.
.TONIGHT...Northwest winds 20 to 30 knots diminishing to 15 to
25 knots late. A chance of showers. Waves building to 3 to 6 feet
occasionally to 8 feet.
.TUESDAY...Northwest winds 15 to 25 knots. Waves subsiding to
2 to 4 feet.
.TUESDAY NIGHT...North winds 10 to 20 knots. Waves subsiding to
1 to 3 feet.
.WEDNESDAY...North winds 10 to 20 knots backing northwest by mid
afternoon. Waves subsiding to calm to 2 feet, then building to
1 to 3 feet.
.WEDNESDAY NIGHT...Northwest winds 10 to 20 knots becoming north
5 to 15 knots after midnight. Waves subsiding to calm to 2 feet.
.THURSDAY...Northwest winds 5 to 15 knots backing south. Waves
calm to 2 feet.
.FRIDAY...Southeast winds 5 to 15 knots becoming south 10 to
20 knots. Waves calm to 2 feet.

$$
LSZ261-272200-
MAFOR 2715/
Superior West 12600 12610 14710. A chance of showers overnight
and Tuesday morning. Waves 1 to 2 feet.

Superior North Central 11820 11720 12620 14720. Waves 1 to 3 feet
this afternoon. Waves 1 to 3 feet building to 2 to 4 feet
tonight. Waves 2 to 4 feet Tuesday morning.

Superior South Central 11830 19836 15720 11720. Waves 2 to 4
feet.

Superior East 11840 19846 11830 14730 12720. Waves 3 to 5 feet
subsiding to 2 to 4 feet this afternoon. Waves 3 to 6 feet
tonight and Tuesday morning.

$$

LC

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

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