National Weather Service Marine Forecast FZUS63 KMQT
FZUS63 KMQT 051511
GLFLS
Open Lake Forecast for Lake Superior
National Weather Service Marquette MI
1011 AM EST Thu Dec 5 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
30.7 inch high pressure continues its southeast track
across the Mississippi Valley and eventually the Southeast U.S.
by Friday as it weakens to 30.4 inches. On Friday, a weak 30.0
inch low passes over Lake Superior. This low is subsequently
followed by a 29.4 inch low sweeping southeast into the lake by
Saturday evening, which is then followed by another 29.5 inch low
over the Upper Great Lakes Sunday night through Monday.
LSZ162-052315
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM
1011 AM EST Thu Dec 5 2024 /911 AM CST Thu Dec 5 2024/
REST OF TODAY
North winds 20 to 30 knots with a few gale force
gusts to 35 knots becoming northwest 10 to 20 knots by mid
afternoon. Freezing spray late in the morning. Waves 6 to 9 feet
occasionally to 11 feet subsiding to 1 to 3 feet.
TONIGHT
West winds 15 to 25 knots increasing to 20 to 30 knots
by midnight. Isolated snow showers after midnight. Waves building
to 4 to 7 feet occasionally to 9 feet.
FRIDAY
West winds 15 to 25 knots becoming northwest 10 to
20 knots. A chance of snow showers in the morning. Waves
subsiding to calm to 2 feet.
FRIDAY NIGHT
Northwest winds 5 to 15 knots backing southwest
after midnight. A slight chance of snow showers after midnight.
Waves calm to 2 feet.
SATURDAY
Southwest winds 10 to 20 knots increasing to 15 to
25 knots in the afternoon. A chance of snow showers. Waves
building to 3 to 5 feet occasionally to 7 feet.
SATURDAY NIGHT
Southwest winds 15 to 25 knots becoming west
10 to 20 knots after midnight. Waves subsiding to 1 to 3 feet.
SUNDAY
West winds 10 to 20 knots backing east. A chance of
rain showers. Waves subsiding to calm to 2 feet, then building to
2 to 4 feet.
MONDAY
North winds 15 to 25 knots becoming northwest 20 to
30 knots. Rain and snow showers likely, then a chance of snow
showers. Waves building to 3 to 6 feet occasionally to 8 feet,
then subsiding to 2 to 4 feet.
LSZ263-052315
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
1011 AM EST Thu Dec 5 2024
GALE WARNING IN EFFECT UNTIL NOON EST
REST OF TODAY
North gales to 35 knots becoming northwest 10 to
20 knots by mid afternoon. Freezing spray late in the morning.
Waves 10 to 14 feet occasionally to 18 feet subsiding to 3 to
5 feet occasionally to 7 feet.
TONIGHT
Northwest winds 15 to 25 knots becoming west 20 to
30 knots by midnight. Scattered snow showers after midnight.
Waves subsiding to 2 to 4 feet, then building to 5 to 8 feet
occasionally to 10 feet.
FRIDAY
West winds 15 to 25 knots becoming northwest 10 to
20 knots by late morning, then diminishing to 5 to 15 knots by
mid afternoon. A chance of snow showers. Waves subsiding to 1 to
3 feet.
FRIDAY NIGHT
Northwest winds 5 to 15 knots backing southwest
after midnight. A chance of snow showers. Waves subsiding to calm
to 2 feet.
SATURDAY
Southwest winds 10 to 20 knots increasing to 15 to
25 knots in the afternoon. A chance of snow showers. Waves
building to 3 to 6 feet occasionally to 8 feet.
SATURDAY NIGHT
Southwest winds 15 to 25 knots veering west
after midnight. Waves subsiding to 3 to 5 feet occasionally to
7 feet.
SUNDAY
West winds 5 to 15 knots becoming east 10 to 20 knots.
A chance of rain showers. Waves subsiding to 1 to 3 feet, then
building to 3 to 5 feet occasionally to 7 feet.
MONDAY
North winds 15 to 25 knots backing northwest. A chance
of rain and snow showers. Waves building to 4 to 7 feet
occasionally to 9 feet, then subsiding to 3 to 5 feet
occasionally to 7 feet.
LSZ264-052315
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border
1011 AM EST Thu Dec 5 2024
GALE WARNING IN EFFECT UNTIL 1 PM EST THIS AFTERNOON
REST OF TODAY
North gales to 40 knots becoming northwest 15 to
25 knots by mid afternoon. Freezing spray late in the morning.
Isolated snow showers. Waves 12 to 17 feet occasionally to
21 feet subsiding to 4 to 7 feet occasionally to 9 feet.
TONIGHT
Northwest winds 10 to 20 knots becoming west 15 to
25 knots by midnight, then increasing to 20 to 30 knots late.
Scattered snow showers after midnight. Waves subsiding to 2 to
4 feet, then building to 5 to 8 feet occasionally to 10 feet.
FRIDAY
Northwest winds 15 to 25 knots becoming north 10 to
20 knots by late morning, then diminishing to 5 to 15 knots by
mid afternoon. A chance of snow showers. Waves subsiding to 1 to
3 feet.
FRIDAY NIGHT
North winds 5 to 15 knots backing southwest after
midnight. A chance of snow showers after midnight. Waves
subsiding to calm to 2 feet.
SATURDAY
Southwest winds 10 to 20 knots increasing to 15 to
25 knots in the afternoon. Snow showers likely. Waves building to
3 to 5 feet occasionally to 7 feet.
SATURDAY NIGHT
West winds 15 to 25 knots. Waves building to
3 to 6 feet occasionally to 8 feet.
SUNDAY
West winds 5 to 15 knots becoming east 10 to 20 knots.
A chance of rain showers. Waves subsiding to 1 to 3 feet, then
building to 3 to 6 feet occasionally to 8 feet.
MONDAY
East winds 15 to 25 knots backing north. A chance of
rain and snow showers. Waves building to 4 to 7 feet occasionally
to 9 feet, then subsiding to 3 to 6 feet occasionally to 8 feet.
LSZ265-052315
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore
1011 AM EST Thu Dec 5 2024
GALE WARNING IN EFFECT UNTIL 2 PM EST THIS AFTERNOON
REST OF TODAY
North gales to 40 knots becoming northwest 20 to
30 knots by mid afternoon. Freezing spray late in the morning.
Scattered snow showers. Waves 15 to 20 feet occasionally to
25 feet subsiding to 6 to 9 feet occasionally to 11 feet.
TONIGHT
Northwest winds 15 to 25 knots becoming west 20 to
30 knots by midnight. Scattered snow showers. Waves subsiding to
3 to 6 feet occasionally to 8 feet.
FRIDAY
West winds 20 to 30 knots veering northwest by late
morning, then diminishing to 15 to 25 knots by mid afternoon.
Snow showers likely in the morning, then a chance of snow showers
in the afternoon. Waves subsiding to 1 to 3 feet.
FRIDAY NIGHT
Northwest winds 10 to 20 knots backing west after
midnight. A slight chance of snow showers. Waves subsiding to
calm to 2 feet.
SATURDAY
Southwest winds 10 to 20 knots. A chance of snow
showers. Waves calm to 2 feet.
SATURDAY NIGHT
Southwest winds 10 to 20 knots veering west
after midnight. Waves calm to 2 feet.
SUNDAY
West winds 10 to 20 knots backing southeast. A chance
of rain showers. Waves calm to 2 feet.
MONDAY
West winds 15 to 25 knots veering northwest. Rain
showers, possibly mixed with snow, then a chance of snow showers.
Waves building to 3 to 6 feet occasionally to 8 feet.
LSZ266-052315
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
1011 AM EST Thu Dec 5 2024
GALE WARNING IN EFFECT UNTIL 4 PM EST THIS AFTERNOON
REST OF TODAY
North gales to 45 knots. Freezing spray.
Scattered snow showers. Waves 17 to 22 feet occasionally to 28
feet subsiding to 8 to 11 feet occasionally to 14 feet.
TONIGHT
Northwest winds 20 to 30 knots backing west late.
Scattered snow showers. Waves subsiding to 4 to 7 feet
occasionally to 9 feet.
FRIDAY
West winds 20 to 30 knots veering northwest by late
morning, then diminishing to 15 to 25 knots by mid afternoon.
Snow showers likely in the morning, then a chance of snow showers
in the afternoon. Waves subsiding to 3 to 5 feet occasionally to
7 feet.
FRIDAY NIGHT
North winds 10 to 20 knots backing west after
midnight. A chance of snow showers. Waves subsiding to calm to
2 feet.
SATURDAY
Southwest winds 10 to 20 knots increasing to 15 to
25 knots in the afternoon. A chance of snow showers in the
morning, then snow showers likely in the afternoon. Waves
building to 2 to 4 feet.
SATURDAY NIGHT
Southwest winds 15 to 25 knots becoming west
10 to 20 knots after midnight. Waves building to 3 to 6 feet
occasionally to 8 feet.
SUNDAY
West winds 10 to 20 knots backing southeast. A chance
of rain showers. Waves subsiding to 1 to 3 feet, then building to
3 to 5 feet occasionally to 7 feet.
MONDAY
Southeast winds 15 to 25 knots veering northwest. A
chance of snow showers. Rain showers likely. Snow showers likely.
Waves building to 3 to 6 feet occasionally to 8 feet.
LSZ267-052315
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border
1011 AM EST Thu Dec 5 2024
GALE WARNING IN EFFECT UNTIL 4 PM EST THIS AFTERNOON
REST OF TODAY
North gales to 45 knots. Freezing spray late in
the morning. Isolated snow showers. Waves 12 to 17 feet
occasionally to 21 feet subsiding to 7 to 10 feet occasionally to
13 feet.
TONIGHT
North winds 20 to 30 knots becoming northwest 15 to
25 knots by midnight, then becoming west 20 to 30 knots late.
Scattered snow showers in the evening, then numerous snow showers
after midnight. Waves subsiding to 4 to 7 feet occasionally to
9 feet.
FRIDAY
West winds 20 to 30 knots becoming north 15 to 25 knots
by mid afternoon. Snow showers likely in the morning, then a
chance of snow showers in the afternoon. Waves subsiding to 3 to
5 feet occasionally to 7 feet.
FRIDAY NIGHT
North winds 15 to 25 knots diminishing to 10 to
20 knots after midnight. A chance of snow showers. Waves
subsiding to calm to 2 feet.
SATURDAY
South winds 10 to 20 knots increasing to 15 to
25 knots in the afternoon. Snow showers. Waves building to 1 to
3 feet.
SATURDAY NIGHT
Southwest winds 15 to 25 knots veering west
after midnight. Rain showers likely in the evening. A chance of
snow showers. Waves building to 2 to 4 feet.
SUNDAY
West winds 10 to 20 knots backing southeast. A chance
of rain showers. Waves subsiding to calm to 2 feet, then building
to 1 to 3 feet.
MONDAY
Southeast winds 15 to 25 knots veering northwest. Rain
showers likely. Snow showers likely. Waves building to 3 to
5 feet occasionally to 7 feet.
LSZ261-052315
MAFOR 0516/ Superior West 11840 12720 11630 12640 11640 19647 11730. Waves 5 to 8 feet subsiding to 3 to 5 feet this afternoon. Waves 2 to 4 feet building to 4 to 7 feet tonight and Friday morning.
Superior North Central...GALE WARNING IN EFFECT...11850 11840 13730 12640 19647 11730. Waves 10 to 14 feet subsiding to 6 to 9 feet this afternoon. Waves 3 to 6 feet building to 4 to 7 feet tonight. Waves 5 to 8 feet Friday morning.
Superior South Central...GALE WARNING IN EFFECT...12850 19857 11740 19747 11730 11730 19737 11640 19647 12640. Waves 12 to 17 feet subsiding to 10 to 13 feet this afternoon. Waves 7 to 10 feet subsiding to 4 to 7 feet tonight and Friday morning.
Superior East...GALE WARNING IN EFFECT...12850 11840 19847 12730 19737 11737 12647. Waves 11 to 16 feet subsiding to 9 to 12 feet this afternoon. Waves 7 to 10 feet subsiding to 5 to 8 feet tonight. Waves 6 to 9 feet Friday morning.
GS
Experimental modernized open lake forecast is available online at weather.gov/mqt/glftable
Graphical marine forecasts are available online at: weather.gov/greatlakes
NDBC on Facebook
NOAA on LinkedIn
NDBC on Twitter