435
FZUS63 KMQT 040158
GLFLS

Open Lake Forecast for Lake Superior
National Weather Service Marquette MI
958 PM EDT Mon Jun 3 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...Lake Superior is currently set between 29.9 inch
ridging over the Lower Great Lakes and a trough of 29.4 inches over
the west end of the Dakotas. On Tuesday, 29.2 inch low pressure
tracking across the Canadian Prairies will power the trough eastward
to the Upper Mississippi Valley. The trough will then sail across
Lake Superior Tuesday night and Wednesday morning while the parent
low pressure tracks from the Canadian Prairies toward northern
Ontario. The low weakens to 29.5 inches over far northeastern
Ontario Thursday through Thursday night while a 30.0 inch ridge
builds southeast into the Northern and Central Plains. This ridge
will drift toward the Mississippi Valley on Friday while the low
over far northeastern Ontario drifts east into Quebec, weakening to
29.6 inches.

LSZ162-041000-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
958 PM EDT Mon Jun 3 2024 /858 PM CDT Mon Jun 3 2024/

...DENSE FOG ADVISORY IN EFFECT UNTIL 9 AM EDT /8 AM CDT/
TUESDAY...

.REST OF TONIGHT...Northeast winds 5 to 15 knots. Areas of dense
fog. Waves calm to 2 feet.
.TUESDAY...East winds 5 to 15 knots becoming northeast 10 to
20 knots in the afternoon, then veering east late. Areas of fog.
A chance of showers. A chance of thunderstorms by mid afternoon.
Waves building to 1 to 3 feet.
.TUESDAY NIGHT...East winds 10 to 20 knots veering southwest
after midnight. Patchy fog through midnight. Showers and a chance
of thunderstorms. Waves subsiding to calm to 2 feet.
.WEDNESDAY...Southwest winds 10 to 20 knots increasing to 15 to
25 knots by mid afternoon. A chance of showers and a slight
chance of thunderstorms. Waves building to 2 to 4 feet.
.WEDNESDAY NIGHT...West winds 15 to 25 knots. Waves subsiding to
1 to 3 feet, then building to 2 to 4 feet.
.THURSDAY...West winds 15 to 25 knots increasing to 20 to
30 knots by mid afternoon. Waves building to 3 to 6 feet
occasionally to 8 feet.
.THURSDAY NIGHT...West winds 15 to 25 knots. Waves subsiding to
2 to 4 feet.
.FRIDAY...West winds 15 to 25 knots becoming northwest 10 to
20 knots. Waves subsiding to calm to 2 feet.
.SATURDAY...West winds 10 to 20 knots veering northwest. Waves
building to 1 to 3 feet, then subsiding to calm to 2 feet.

$$

LSZ263-041000-
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-
958 PM EDT Mon Jun 3 2024

...DENSE FOG ADVISORY IN EFFECT UNTIL 9 AM EDT TUESDAY...

.REST OF TONIGHT...Southeast winds 5 to 15 knots becoming
northeast less than 10 knots after midnight, then becoming east
5 to 15 knots late. Areas of dense fog. Waves calm to 2 feet.
.TUESDAY...East winds 5 to 15 knots. Areas of fog. A slight
chance of showers and thunderstorms by mid afternoon. Waves
building to 1 to 3 feet.
.TUESDAY NIGHT...South winds 10 to 20 knots becoming southwest
5 to 15 knots late. Patchy fog through midnight. Showers likely
and a chance of thunderstorms. Waves building to 2 to 4 feet,
then subsiding to 1 to 3 feet.
.WEDNESDAY...Southwest winds 5 to 15 knots. A chance of showers
and a slight chance of thunderstorms. Waves 1 to 3 feet.
.WEDNESDAY NIGHT...West winds 5 to 15 knots increasing to 10 to
20 knots after midnight. Waves building to 2 to 4 feet.
.THURSDAY...West winds 15 to 25 knots. Waves building to 3 to
5 feet occasionally to 7 feet.
.THURSDAY NIGHT...West winds 10 to 20 knots. Waves subsiding to
2 to 4 feet.
.FRIDAY...West winds 10 to 20 knots becoming northwest 5 to
15 knots. Waves subsiding to 1 to 3 feet.
.SATURDAY...West winds 5 to 15 knots. Waves subsiding to calm to
2 feet.

$$

LSZ264-041000-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
958 PM EDT Mon Jun 3 2024

.REST OF TONIGHT...Southeast winds 5 to 15 knots veering south
late. Patchy fog, then areas of fog after midnight. Waves 2 to 4
feet subsiding to calm to 2 feet.
.TUESDAY...Southeast winds 5 to 15 knots increasing to 10 to
20 knots late. Areas of fog. A slight chance of showers by mid
afternoon. Waves subsiding to calm to 2 feet, then building to
1 to 3 feet.
.TUESDAY NIGHT...Southeast winds 10 to 20 knots veering south
after midnight. Patchy fog through midnight. A chance of showers
through midnight. A chance of thunderstorms. Showers likely after
midnight. Waves building to 3 to 5 feet occasionally to 7 feet,
then subsiding to 2 to 4 feet.
.WEDNESDAY...Southwest winds 5 to 15 knots backing south by mid
afternoon. Showers likely through early afternoon. A slight
chance of thunderstorms. A chance of showers by mid afternoon.
Waves subsiding to 1 to 3 feet.
.WEDNESDAY NIGHT...Southwest winds 5 to 15 knots becoming west
10 to 20 knots after midnight. Waves building to 2 to 4 feet.
.THURSDAY...West winds 15 to 25 knots. Waves building to 3 to
5 feet occasionally to 7 feet.
.THURSDAY NIGHT...West winds 10 to 20 knots veering northwest
after midnight. Waves subsiding to 2 to 4 feet.
.FRIDAY...Northwest winds 10 to 20 knots diminishing to 5 to
15 knots. Waves subsiding to 1 to 3 feet.
.SATURDAY...West winds 5 to 15 knots veering northwest. Waves
1 to 3 feet.

$$

LSZ265-041000-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
958 PM EDT Mon Jun 3 2024

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

$$

LSZ266-041000-
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-
958 PM EDT Mon Jun 3 2024

...DENSE FOG ADVISORY IN EFFECT UNTIL 9 AM EDT TUESDAY...

.REST OF TONIGHT...South winds 15 to 25 knots diminishing to
10 to 20 knots after midnight. A slight chance of showers and
thunderstorms by late evening. Areas of dense fog. Waves 2 to 4
feet subsiding to 1 to 3 feet.
.TUESDAY...Southeast winds 10 to 20 knots increasing to 15 to
25 knots late. Sprinkles through early afternoon. Patchy fog.
Waves building to 2 to 4 feet.
.TUESDAY NIGHT...Southeast winds 15 to 25 knots veering south
after midnight. Patchy fog through midnight. A chance of showers
and thunderstorms. Waves building to 3 to 5 feet occasionally to
7 feet, then subsiding to 2 to 4 feet.
.WEDNESDAY...South winds 10 to 20 knots. Showers and a chance of
thunderstorms. Waves subsiding to 1 to 3 feet.
.WEDNESDAY NIGHT...Southwest winds 10 to 20 knots veering west
after midnight. A chance of showers. Waves 1 to 3 feet.
.THURSDAY...West winds 10 to 20 knots increasing to 15 to
25 knots by mid afternoon. A chance of showers. Waves building to
3 to 5 feet occasionally to 7 feet.
.THURSDAY NIGHT...West winds 15 to 25 knots veering northwest
after midnight. A chance of showers. Waves subsiding to 2 to
4 feet.
.FRIDAY...Northwest winds 15 to 25 knots diminishing to 10 to
20 knots. Waves subsiding to 1 to 3 feet.
.SATURDAY...Northwest winds 10 to 20 knots. Waves 1 to 3 feet.

$$

LSZ267-041000-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
958 PM EDT Mon Jun 3 2024

.REST OF TONIGHT...South winds 10 to 20 knots backing southeast
after midnight. A slight chance of showers by late evening. Patchy
fog. Waves 1 to 3 feet.
.TUESDAY...Southeast winds 10 to 20 knots. A chance of showers
and a slight chance of thunderstorms through early afternoon.
Waves 1 to 3 feet.
.TUESDAY NIGHT...Southeast winds 15 to 25 knots. A chance of
showers and thunderstorms after midnight. Waves building to 2 to
4 feet.
.WEDNESDAY...Southeast winds 10 to 20 knots veering southwest by
mid afternoon. Showers and a chance of thunderstorms. Waves
subsiding to calm to 2 feet.
.WEDNESDAY NIGHT...South winds 10 to 20 knots veering west after
midnight. A chance of thunderstorms through midnight. A chance of
showers. Waves calm to 2 feet.
.THURSDAY...West winds 10 to 20 knots. A chance of showers. Waves
building to 1 to 3 feet.
.THURSDAY NIGHT...West winds 10 to 20 knots veering northwest
after midnight. A chance of showers. Waves building to 2 to
4 feet.
.FRIDAY...Northwest winds 10 to 20 knots. A chance of showers.
Waves subsiding to 1 to 3 feet.
.SATURDAY...Northwest winds 10 to 20 knots. A chance of showers.
Waves subsiding to calm to 2 feet.

$$
LSZ261-041000-
MAFOR 0403/
Superior West 11204 11104 11204 11213 11210 11120 11220 11319.
Waves 1 foot or less overnight. Waves 1 to 3 feet Tuesday and
Tuesday evening.

Superior North Central 11410 11310 11304 11313 11310 11320 11323
11320. Waves 1 to 4 feet.

Superior South Central 11420 12410 12310 13320. Waves 1 to 4 feet.

Superior East 11420 14310 11310 12320. Waves 2 to 3 feet.

$$

Jablonski

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

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