033
FZUS63 KMQT 161407
GLFLS

Open Lake Forecast for Lake Superior
National Weather Service Marquette MI
1007 AM EDT Mon Sep 16 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...Through Wednesday, 30.3 inch high pressure anchored
offshore of the New England Coast will extend 30.1 inch ridging
back into the Great Lakes region. During Thursday and Friday, 30.0
inch ridging will extend from northern Quebec into the Great
Lakes region. Meanwhile, a 29.9 inch low pressure trough extending
from Hudson Bay to southern Manitoba early this morning will move
into northern Ontario today before it dissipates. A 29.4 inch
trough will then emerge over the western Great Plains on Tuesday.
Low pressure of 29.3 inches developing along this trough during
Tuesday night and Wednesday will lift into Saskatchewan on
Wednesday night. As the low drifts into Manitoba on Thursday, an
associated 29.6 inch trough will progress across the Dakotas. As
the low continues to track northeast to Hudson Bay during Friday,
the associated trough will reach western Lake Superior and then
dissipate.

LSZ162-162215-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
1007 AM EDT Mon Sep 16 2024 /907 AM CDT Mon Sep 16 2024/

.REST OF TODAY...South winds 5 to 15 knots backing east late. A
slight chance of showers and thunderstorms. Waves calm to 2 feet.
.TONIGHT...East winds 5 to 15 knots veering south after midnight.
A slight chance of showers and thunderstorms through midnight.
Waves calm to 2 feet.
.TUESDAY...South winds 5 to 15 knots becoming east 10 to 20 knots
late. Waves calm to 2 feet.
.TUESDAY NIGHT...South winds 5 to 15 knots. Waves calm to 2 feet.
.WEDNESDAY...Southeast winds 5 to 15 knots becoming east 10 to
20 knots by mid afternoon. Waves calm to 2 feet.
.WEDNESDAY NIGHT...East winds 10 to 20 knots becoming southeast
5 to 15 knots after midnight. Waves calm to 2 feet.
.THURSDAY...East winds 5 to 15 knots becoming south 10 to
20 knots. A chance of showers. Waves calm to 2 feet.
.FRIDAY...South winds 10 to 20 knots. A chance of showers. Waves
calm to 2 feet.

$$

LSZ263-162215-
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 AM EDT Mon Sep 16 2024

.REST OF TODAY...Southwest winds 5 to 15 knots backing south
late. A chance of showers and a slight chance of thunderstorms.
Waves calm to 2 feet.
.TONIGHT...Southeast winds 5 to 15 knots veering south after
midnight. A slight chance of showers and thunderstorms through
midnight. Waves calm to 2 feet.
.TUESDAY...South winds 5 to 15 knots backing southeast late.
Waves calm to 2 feet.
.TUESDAY NIGHT...South winds 5 to 15 knots. Waves calm to 2 feet.
.WEDNESDAY...South winds 5 to 15 knots backing east by mid
afternoon. Waves calm to 2 feet.
.WEDNESDAY NIGHT...Southeast winds 5 to 15 knots veering south
after midnight. Waves calm to 2 feet.
.THURSDAY...Southeast winds 5 to 15 knots becoming south 10 to
20 knots. A chance of showers. Waves calm to 2 feet.
.FRIDAY...South winds 5 to 15 knots. A chance of showers. Waves
calm to 2 feet.

$$

LSZ264-162215-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
1007 AM EDT Mon Sep 16 2024

.REST OF TODAY...Southwest winds 5 to 15 knots backing south
late. A chance of showers and a slight chance of thunderstorms.
Waves calm to 2 feet.
.TONIGHT...South winds 5 to 15 knots. A slight chance of showers
and thunderstorms. Waves calm to 2 feet.
.TUESDAY...South winds 5 to 15 knots. Waves calm to 2 feet.
.TUESDAY NIGHT...South winds 5 to 15 knots. Waves building to
1 to 3 feet, then subsiding to calm to 2 feet.
.WEDNESDAY...South winds 5 to 15 knots backing southeast by mid
afternoon. Waves calm to 2 feet.
.WEDNESDAY NIGHT...Southeast winds 5 to 15 knots veering south
after midnight. Waves calm to 2 feet.
.THURSDAY...Southeast winds 5 to 15 knots becoming south 10 to
20 knots. Waves building to 1 to 3 feet, then subsiding to calm
to 2 feet.
.FRIDAY...South winds 5 to 15 knots. A chance of showers. Waves
calm to 2 feet.

$$

LSZ265-162215-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
1007 AM EDT Mon Sep 16 2024

.REST OF TODAY...Southwest winds 10 to 20 knots becoming south
5 to 15 knots in the afternoon, then becoming southeast 10 to
20 knots late. A chance of showers and a slight chance of
thunderstorms by mid afternoon. Waves calm to 2 feet.
.TONIGHT...Southeast winds 5 to 15 knots becoming south 10 to
20 knots after midnight, then diminishing to 5 to 15 knots late.
A slight chance of showers and thunderstorms through midnight.
Waves calm to 2 feet.
.TUESDAY...South winds 5 to 15 knots increasing to 10 to 20 knots
in the afternoon, then backing southeast late. Waves calm to
2 feet.
.TUESDAY NIGHT...South winds 10 to 20 knots diminishing to 5 to
15 knots after midnight. Waves calm to 2 feet.
.WEDNESDAY...South winds 5 to 15 knots becoming southeast 10 to
20 knots by mid afternoon. Waves calm to 2 feet.
.WEDNESDAY NIGHT...South winds 5 to 15 knots. Waves calm to
2 feet.
.THURSDAY...Southeast winds 5 to 15 knots becoming south 10 to
20 knots. Waves calm to 2 feet.
.FRIDAY...Southeast winds 10 to 20 knots veering south. A chance
of showers. Waves calm to 2 feet.

$$

LSZ266-162215-
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 AM EDT Mon Sep 16 2024

.REST OF TODAY...South winds 10 to 20 knots becoming southeast
5 to 15 knots late. A slight chance of showers and thunderstorms.
Waves 1 to 3 feet subsiding to calm to 2 feet.
.TONIGHT...South winds 5 to 15 knots increasing to 10 to 20 knots
after midnight. A slight chance of showers and thunderstorms.
Waves calm to 2 feet.
.TUESDAY...South winds 10 to 20 knots. Waves building to 1 to
3 feet, then subsiding to calm to 2 feet.
.TUESDAY NIGHT...South winds 10 to 20 knots diminishing to 5 to
15 knots after midnight. Waves building to 1 to 3 feet, then
subsiding to calm to 2 feet.
.WEDNESDAY...South winds 5 to 15 knots backing southeast by mid
afternoon. Waves calm to 2 feet.
.WEDNESDAY NIGHT...Southeast winds 5 to 15 knots veering south
after midnight. Waves calm to 2 feet.
.THURSDAY...Southeast winds 5 to 15 knots becoming south 10 to
20 knots. Waves calm to 2 feet.
.FRIDAY...South winds 10 to 20 knots. A chance of showers. Waves
calm to 2 feet.

$$

LSZ267-162215-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
1007 AM EDT Mon Sep 16 2024

.REST OF TODAY...South winds 10 to 20 knots diminishing to 5 to
15 knots in the afternoon, then backing southeast late. Waves
calm to 2 feet.
.TONIGHT...South winds 10 to 20 knots. Waves calm to 2 feet.
.TUESDAY...South winds 10 to 20 knots. Waves calm to 2 feet.
.TUESDAY NIGHT...South winds 10 to 20 knots. Waves calm to
2 feet.
.WEDNESDAY...South winds 5 to 15 knots backing southeast by mid
afternoon. Waves calm to 2 feet.
.WEDNESDAY NIGHT...Southeast winds 5 to 15 knots veering south
after midnight. Waves calm to 2 feet.
.THURSDAY...Southeast winds 5 to 15 knots increasing to 10 to
20 knots. Waves calm to 2 feet.
.FRIDAY...Southeast winds 10 to 20 knots. A chance of showers.
Waves calm to 2 feet.

$$
LSZ261-162215-
MAFOR 1615/
Superior West 12400 13300 12410 11400. A chance of showers late
this morning. Waves 2 feet or less.

Superior North Central 12510 15400. A chance of showers late this
morning. Waves 2 feet or less.

Superior South Central 11410 12300 11310 14410. A chance of
showers this afternoon. Waves 2 feet or less.

Superior East 11510 11400 11300 11400 14410. Waves 1 to 3 feet.

$$

Voss

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

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