786
FZUS63 KMQT 050143
GLFLS

Open Lake Forecast for Lake Superior
National Weather Service Marquette MI
943 PM EDT Tue Jun 4 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 29.3 inch low is currently over the southern
Saskatchewan-Manitoba border this evening. The cold front of the
low will extend troughing of 29.5 inches across Lake Superior
tonight into Wednesday before the parent low pressure deepens to
29.2 inches over northern Ontario and extends 29.3 inch troughing
over Lake Superior Thursday morning. The troughing over Lake
Superior weakens to 29.6 inches by Friday as the low weakens to
29.4 inches over southern James Bay. Weak ridging near 29.8 inches
pushes into the Great Lakes Basin Saturday and Sunday.

LSZ162-050945-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
943 PM EDT Tue Jun 4 2024 /843 PM CDT Tue Jun 4 2024/

...DENSE FOG ADVISORY IN EFFECT UNTIL 11 PM EDT /10 PM CDT/ THIS
EVENING...

.REST OF TONIGHT...East winds 5 to 15 knots veering west late.
Patchy fog. A chance of showers by late evening. A chance of
thunderstorms. Showers likely after midnight. Waves 1 to 3 feet
subsiding to calm to 2 feet.
.WEDNESDAY...Southwest winds 10 to 20 knots increasing to 15 to
25 knots in the afternoon. Patchy fog through early afternoon. A
chance of showers and thunderstorms. Waves building to 1 to
3 feet.
.WEDNESDAY NIGHT...West winds 15 to 25 knots. A slight chance of
thunderstorms through midnight. A slight chance of showers. Waves
building to 2 to 4 feet.
.THURSDAY...West winds 20 to 30 knots. A chance of showers. Waves
building to 3 to 5 feet occasionally to 7 feet, then subsiding to
2 to 4 feet.
.THURSDAY NIGHT...West winds 20 to 30 knots diminishing to 15 to
25 knots after midnight. A chance of showers. Waves 2 to 4 feet.
.FRIDAY...West winds 15 to 25 knots. A chance of showers. Waves
2 to 4 feet.
.FRIDAY NIGHT...West winds 15 to 25 knots diminishing to 10 to
20 knots after midnight. A chance of showers. Waves subsiding to
1 to 3 feet.
.SATURDAY...West winds 15 to 25 knots becoming northwest 10 to
20 knots. A chance of showers. Waves subsiding to calm to 2 feet.
.SUNDAY...Northwest winds 15 to 25 knots becoming north 10 to
20 knots. Waves calm to 2 feet.

$$

LSZ263-050945-
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-
943 PM EDT Tue Jun 4 2024

...DENSE FOG ADVISORY IN EFFECT UNTIL 11 PM EDT THIS EVENING...

.REST OF TONIGHT...South winds 5 to 15 knots backing southeast
after midnight. Patchy fog. A chance of showers and
thunderstorms. Waves 1 to 3 feet subsiding to calm to 2 feet.
.WEDNESDAY...West winds 10 to 20 knots backing south late. Patchy
fog through early afternoon. Rain showers through early
afternoon. A chance of thunderstorms. A slight chance of rain
showers by mid afternoon. Waves building to 1 to 3 feet, then
subsiding to calm to 2 feet.
.WEDNESDAY NIGHT...Southwest winds 5 to 15 knots becoming west
10 to 20 knots after midnight. A slight chance of thunderstorms
through midnight. A slight chance of showers. Waves building to
3 to 5 feet occasionally to 7 feet.
.THURSDAY...West winds 15 to 25 knots increasing to 20 to
30 knots by mid afternoon. A chance of showers. Waves building to
3 to 6 feet occasionally to 8 feet.
.THURSDAY NIGHT...West winds 15 to 25 knots diminishing to 10 to
20 knots after midnight. A chance of showers. Waves subsiding to
2 to 4 feet.
.FRIDAY...West winds 15 to 25 knots. A chance of showers. Waves
2 to 4 feet.
.FRIDAY NIGHT...West winds 10 to 20 knots. A chance of showers.
Waves subsiding to 1 to 3 feet.
.SATURDAY...West winds 10 to 20 knots veering northwest. A chance
of showers. Waves 1 to 3 feet.
.SUNDAY...Northwest winds 10 to 20 knots veering north. A chance
of showers. Waves subsiding to calm to 2 feet.

$$

LSZ264-050945-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
943 PM EDT Tue Jun 4 2024

...DENSE FOG ADVISORY IN EFFECT UNTIL 11 PM EDT THIS EVENING...

.REST OF TONIGHT...Southeast winds 10 to 20 knots becoming south
5 to 15 knots after midnight, then backing southeast late. Patchy
fog. A chance of showers and thunderstorms. Waves 1 to 3 feet
building to 2 to 4 feet.
.WEDNESDAY...South winds 10 to 20 knots veering west in the
afternoon, then backing southwest late. Patchy fog. Rain showers
through early afternoon. A chance of thunderstorms. A chance of
rain 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. Patchy fog. A chance of showers.
Waves subsiding to calm to 2 feet, then building to 3 to 5 feet
occasionally to 7 feet.
.THURSDAY...West winds 15 to 25 knots. A chance of showers. Waves
building to 3 to 6 feet occasionally to 8 feet.
.THURSDAY NIGHT...West winds 15 to 25 knots diminishing to 10 to
20 knots after midnight. A chance of showers. Waves subsiding to
2 to 4 feet.
.FRIDAY...Northwest winds 10 to 20 knots backing west by mid
afternoon. A chance of showers. Waves 2 to 4 feet.
.FRIDAY NIGHT...West winds 5 to 15 knots veering northwest after
midnight. A chance of showers. Waves subsiding to 1 to 3 feet.
.SATURDAY...West winds 10 to 20 knots veering northwest. A chance
of showers. Waves 1 to 3 feet.
.SUNDAY...Northwest winds 10 to 20 knots becoming north 5 to
15 knots. A chance of showers. Waves 1 to 3 feet.

$$

LSZ265-050945-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
943 PM EDT Tue Jun 4 2024

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

$$

LSZ266-050945-
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-
943 PM EDT Tue Jun 4 2024

.REST OF TONIGHT...Southeast winds 15 to 25 knots becoming south
10 to 20 knots after midnight, then backing southeast late.
Patchy fog after midnight. A slight chance of showers and
thunderstorms after midnight. Waves 2 to 4 feet.
.WEDNESDAY...Southeast winds 10 to 20 knots becoming west 15 to
25 knots in the afternoon, then diminishing to 10 to 20 knots
late. Patchy fog. Showers through early afternoon. A slight
chance of thunderstorms. A chance of showers by mid afternoon.
Waves subsiding to 1 to 3 feet.
.WEDNESDAY NIGHT...South winds 10 to 20 knots veering west late.
Patchy fog. A slight chance of thunderstorms through midnight. A
chance of showers. Waves subsiding to calm to 2 feet, then
building to 2 to 4 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. A chance of showers.
Waves subsiding to 2 to 4 feet, then building to 3 to 5 feet
occasionally to 7 feet.
.FRIDAY...Northwest winds 15 to 25 knots. A chance of rain
showers. Waves 3 to 5 feet occasionally to 7 feet.
.FRIDAY NIGHT...Northwest winds 10 to 20 knots. A chance of
showers. Waves subsiding to 1 to 3 feet.
.SATURDAY...Northwest winds 15 to 25 knots diminishing to 10 to
20 knots. A chance of showers. Waves 1 to 3 feet.
.SUNDAY...Northwest winds 15 to 25 knots becoming north 10 to
20 knots. A chance of showers. Waves building to 2 to 4 feet,
then subsiding to 1 to 3 feet.

$$

LSZ267-050945-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
943 PM EDT Tue Jun 4 2024

.REST OF TONIGHT...Southeast winds 10 to 20 knots increasing to
15 to 25 knots late. Waves 1 to 3 feet building to 2 to 4 feet.
.WEDNESDAY...Southeast winds 15 to 25 knots veering south in the
afternoon, then becoming west 10 to 20 knots late. Patchy fog. A
chance of showers and thunderstorms. Waves subsiding to 1 to
3 feet.
.WEDNESDAY NIGHT...South winds 10 to 20 knots veering west late.
Patchy fog. A slight chance of thunderstorms through midnight. A
chance of showers. Waves subsiding to calm to 2 feet.
.THURSDAY...West winds 10 to 20 knots. A chance of showers. Waves
building to 2 to 4 feet.
.THURSDAY NIGHT...West winds 10 to 20 knots increasing to 15 to
25 knots after midnight. A chance of showers. Waves building to
3 to 5 feet occasionally to 7 feet.
.FRIDAY...Northwest winds 15 to 25 knots. A chance of showers.
Waves 3 to 5 feet occasionally to 7 feet.
.FRIDAY NIGHT...West winds 10 to 20 knots veering northwest after
midnight. A chance of showers. Waves subsiding to 1 to 3 feet.
.SATURDAY...West winds 10 to 20 knots veering northwest. A chance
of showers. Waves building to 2 to 4 feet, then subsiding to 1 to
3 feet.
.SUNDAY...Northwest winds 10 to 20 knots veering north. A chance
of showers. Waves building to 2 to 4 feet, then subsiding to 1 to
3 feet.

$$
LSZ261-050945-
MAFOR 0503/
Superior West 11200 11406 12616 13520 11620. A chance of
thunderstorms overnight and Wednesday morning. Waves 1 to 3 feet.

Superior North Central 11420 12310 11426 11526 11620 11520 11510.
A chance of thunderstorms Wednesday morning. Waves 2 to 4 feet.

Superior South Central 13320 11426 11526 11620 12410. Waves 1 to
3 feet.

Superior East 14320 11326 11526 11610 11500. Waves 2 to 4 feet.

$$

BW

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

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