Lake effect snow will continue into the weekend as two more quick moving systems will bring widespread snow to the Upper Great Lakes. High winds are expected across portions of Montana through the weekend. Below normal temperatures will remain in place across much of the southern and eastern U.S., while the western U.S. will experience above normal temperatures. Read More >
FZUS63 KMQT 060915
GLFLS
Experimental Tabular Open Lake Forecast for Lake Superior
National Weather Service Negaunee MI
415 AM EST Fri Dec 6 2024
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 weak 30.0 inch trough moves through Lake Superior
today. Brief 30.1 inch ridging builds in afterwards by evening. A
29.5 inch low will track southeast through Lake Superior Saturday
evening. Another low of 29.5 inches then will build into the
Northern Plains Sunday night into Monday before transiting the
Upper Great Lakes Monday evening at 29.6 inches. High pressure
ridging builds to 30.1 inches Tuesday.
LSZ162-061645-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
343 AM EST Fri Dec 6 2024 /243 AM CST Fri Dec 6 2024/
.EARLY THIS MORNING, West winds 20 to 30 knots. Scattered snow
showers. Waves 4 to 7 feet occasionally to 9 feet.
.TODAY, West winds 20 to 30 knots becoming northwest 10 to
20 knots. A chance of snow showers in the morning. Waves
subsiding to calm to 2 feet.
.TONIGHT, Northwest winds 5 to 15 knots backing southwest by
midnight, then increasing to 10 to 20 knots late. A chance of
snow showers. A slight chance of sleet after midnight. Waves
building to 1 to 3 feet.
.SATURDAY, Southwest winds 15 to 25 knots veering west by mid
afternoon. Snow showers likely, possibly mixed with freezing rain
and sleet in the morning. A chance of rain showers. Waves
building to 3 to 6 feet occasionally to 8 feet.
.SATURDAY NIGHT, West winds 15 to 25 knots diminishing to 10 to
20 knots after midnight. Waves subsiding to calm to 2 feet.
.SUNDAY, West winds 5 to 15 knots becoming east 10 to 20 knots
in the afternoon. A chance of rain showers, possibly mixed with
snow in the afternoon. Waves calm to 2 feet.
.SUNDAY NIGHT, East winds 15 to 25 knots. Rain and snow showers
likely. Waves building to 3 to 5 feet occasionally to 7 feet.
.MONDAY, West 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 5 to 8 feet occasionally to 10 feet,
then subsiding to 3 to 5 feet occasionally to 7 feet.
.TUESDAY, Northwest winds 20 to 30 knots. A chance of snow
showers. Waves subsiding to 2 to 4 feet.
Note, wave height forecasts are for ice free areas.
LSZ162-061500-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
415 AM EST Fri Dec 6 2024 /315 AM CST Fri Dec 6 2024/
.Today...
Weather.............Mostly cloudy with chance of snow showers, then
partly sunny in the afternoon.
Sfc winds...........West 15 to 20 knots.
100-ft winds........West 20 to 25 knots.
Sig waves...........6 to 9 feet subsiding to 3 to 5 feet in the
afternoon.
Ocnl waves..........Around 11 feet subsiding to around 6 feet in
the afternoon.
.TONIGHT...
Weather.............Cloudy, then chance of snow showers and light
freezing rain after midnight.
Sfc winds...........West 5 to 10 knots becoming southwest 10 to 15
knots after midnight.
100-ft winds........West 10 to 15 knots becoming southwest 15 to 20
knots after midnight.
Sig waves...........2 to 4 feet.
.SATURDAY...
Weather.............Cloudy with snow showers likely, chance of
showers, light freezing rain and light sleet,
then mostly cloudy with chance of showers in
the afternoon.
Sfc winds...........Southwest 20 to 25 knots.
100-ft winds........Southwest to 30 knots.
Sig waves...........5 to 7 feet.
Ocnl waves..........Around 9 feet.
.SATURDAY NIGHT...
Weather.............Mostly cloudy.
Sfc winds...........West 15 to 20 knots.
100-ft winds........West 20 to 25 knots.
Sig waves...........5 to 7 feet subsiding to 3 to 5 feet after
midnight.
Ocnl waves..........Around 8 feet subsiding to around 5 feet after
midnight.
.FORECAST DAYS 3 THROUGH 5...
.SUNDAY...Chance of rain and snow showers in the afternoon. rain
and snow showers likely. North winds 10 to 15 knots. Waves 6 to
9 feet.
.MONDAY...Breezy. Rain and snow showers likely in the morning.
chance of showers in the afternoon. chance of snow showers in the
afternoon and evening. East winds 20 to 25 knots. Waves 8 to
12 feet.
.TUESDAY...Chance of snow showers. Southwest winds 15 to
20 knots. Waves 5 to 7 feet.
$$
LSZ263-061500-
Lake Superior from Saxon Harbor WI to Upper Entrance to Portage
Canal MI 5NM off shore to the US/Canadian border including Isle
Royale National Park-
415 AM EST Fri Dec 6 2024
.Today...
Weather.............Mostly cloudy with chance of snow showers, then
partly sunny with a slight chance of snow
showers in the afternoon.
Sfc winds...........Southwest 20 to 25 knots becoming northwest 10
to 15 knots in the afternoon.
100-ft winds........Southwest to 30 knots becoming northwest 15 to
20 knots in the afternoon.
Sig waves...........6 to 9 feet.
Ocnl waves..........Around 12 feet.
.TONIGHT...
Weather.............Cloudy, then chance of snow showers after
midnight.
Sfc winds...........Northwest 5 to 10 knots becoming southwest 10
to 15 knots after midnight.
100-ft winds........Northwest 10 to 15 knots becoming southwest 15
to 20 knots after midnight.
Sig waves...........2 to 4 feet.
Ocnl waves..........Around 5 feet.
.SATURDAY...
Weather.............Snow showers, showers likely with a chance of
light freezing rain, then snow showers with a
chance of showers in the afternoon.
Sfc winds...........Southwest 20 to 25 knots.
100-ft winds........Southwest to 30 knots.
Sig waves...........5 to 7 feet.
Ocnl waves..........Around 9 feet.
.SATURDAY NIGHT...
Weather.............Mostly cloudy.
Sfc winds...........Southwest 15 to 20 knots.
100-ft winds........Southwest 20 to 25 knots.
Sig waves...........5 to 7 feet.
Ocnl waves..........Around 9 feet.
.FORECAST DAYS 3 THROUGH 5...
.SUNDAY...Chance of rain and snow showers in the afternoon. rain
and snow showers likely. North winds 10 to 15 knots. Waves 6 to
9 feet.
.MONDAY...Breezy. Rain and snow showers likely in the morning.
chance of showers in the afternoon. chance of snow showers in the
afternoon and evening. East winds 20 to 25 knots. Waves 8 to
12 feet.
.TUESDAY...Chance of snow showers. Southwest winds 15 to
20 knots. Waves 5 to 7 feet.
$$
LSZ264-061500-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
415 AM EST Fri Dec 6 2024
.Today...
Weather.............Mostly cloudy with chance of snow showers, then
mostly cloudy with a slight chance of snow
showers in the afternoon.
Sfc winds...........West 20 to 25 knots becoming northwest 10 to 15
knots in the afternoon.
100-ft winds........West to 30 knots becoming northwest 15 to 20
knots in the afternoon.
Sig waves...........6 to 9 feet.
Ocnl waves..........Around 12 feet.
.TONIGHT...
Weather.............Cloudy, then chance of snow showers after
midnight.
Sfc winds...........North 5 to 10 knots becoming southwest after
midnight.
100-ft winds........North 10 to 15 knots becoming southwest after
midnight.
Sig waves...........3 to 5 feet subsiding to 2 to 4 feet after
midnight.
Ocnl waves..........Around 6 feet in the evening.
.SATURDAY...
Weather.............Snow showers likely, then snow showers with
showers likely in the afternoon.
Sfc winds...........South 15 to 20 knots.
100-ft winds........South 20 to 25 knots.
Sig waves...........4 to 6 feet.
Ocnl waves..........Around 8 feet.
.SATURDAY NIGHT...
Weather.............Mostly cloudy with chance of showers, then
mostly cloudy after midnight.
Sfc winds...........West 15 to 20 knots.
100-ft winds........West 20 to 25 knots.
Sig waves...........5 to 7 feet.
Ocnl waves..........Around 9 feet.
.FORECAST DAYS 3 THROUGH 5...
.SUNDAY...Chance of rain and snow showers in the afternoon. rain
and snow showers likely. North winds 10 to 15 knots. Waves 6 to
9 feet.
.MONDAY...Breezy. Rain and snow showers likely in the morning.
chance of showers in the afternoon. chance of snow showers in the
afternoon and evening. East winds 20 to 25 knots. Waves 8 to
12 feet.
.TUESDAY...Chance of snow showers. Southwest winds 15 to
20 knots. Waves 5 to 7 feet.
$$
LSZ265-061500-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
415 AM EST Fri Dec 6 2024
.Today...
Weather.............Mostly cloudy with chance of snow showers.
Sfc winds...........Southwest to 30 knots becoming west 15 to 20
knots in the afternoon.
100-ft winds........Southwest gales to 35 knots becoming west 20 to
25 knots in the afternoon.
Sig waves...........5 to 7 feet.
Ocnl waves..........Around 9 feet.
.TONIGHT...
Weather.............Mostly cloudy with a slight chance of snow
showers, then cloudy with chance of snow
showers after midnight.
Sfc winds...........West 10 to 15 knots.
100-ft winds........West 15 to 20 knots.
Sig waves...........3 to 5 feet subsiding to 2 to 4 feet after
midnight.
Ocnl waves..........Around 6 feet in the evening.
.SATURDAY...
Weather.............Snow showers likely, then snow showers likely
with a chance of showers in the afternoon.
Sfc winds...........Southwest 10 to 15 knots.
100-ft winds........Southwest 15 to 20 knots.
Sig waves...........2 to 4 feet.
.SATURDAY NIGHT...
Weather.............Mostly cloudy.
Sfc winds...........West 15 to 20 knots.
100-ft winds........West 20 to 25 knots.
Sig waves...........2 to 4 feet.
Ocnl waves..........Around 5 feet.
.FORECAST DAYS 3 THROUGH 5...
.SUNDAY...Chance of rain and snow showers in the afternoon. rain
and snow showers likely. North winds 10 to 15 knots. Waves 6 to
9 feet.
.MONDAY...Breezy. Rain and snow showers likely in the morning.
chance of showers in the afternoon. chance of snow showers in the
afternoon and evening. East winds 20 to 25 knots. Waves 8 to
12 feet.
.TUESDAY...Chance of snow showers. Southwest winds 15 to
20 knots. Waves 5 to 7 feet.
$$
LSZ266-061500-
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-
415 AM EST Fri Dec 6 2024
.Today...
Weather.............Mostly cloudy with chance of snow showers.
Sfc winds...........West 20 to 25 knots.
100-ft winds........West to 30 knots.
Sig waves...........6 to 9 feet.
Ocnl waves..........Around 13 feet.
.TONIGHT...
Weather.............Mostly cloudy with a slight chance of snow
showers, then mostly cloudy with chance of snow
showers after midnight.
Sfc winds...........North 10 to 15 knots.
100-ft winds........North 15 to 20 knots.
Sig waves...........5 to 7 feet subsiding to 3 to 5 feet after
midnight.
Ocnl waves..........Around 9 feet subsiding to around 6 feet after
midnight.
.SATURDAY...
Weather.............Snow showers likely, then snow showers in the
afternoon.
Sfc winds...........Southwest 15 to 20 knots.
100-ft winds........Southwest 20 to 25 knots.
Sig waves...........3 to 5 feet.
Ocnl waves..........Around 6 feet.
.SATURDAY NIGHT...
Weather.............Mostly cloudy with chance of rain and snow
showers, then mostly cloudy after midnight.
Sfc winds...........Southwest 15 to 20 knots becoming west after
midnight.
100-ft winds........Southwest 20 to 25 knots becoming west after
midnight.
Sig waves...........5 to 7 feet.
Ocnl waves..........Around 8 feet.
.FORECAST DAYS 3 THROUGH 5...
.SUNDAY...Chance of rain and snow showers in the afternoon. rain
and snow showers likely. North winds 10 to 15 knots. Waves 6 to
9 feet.
.MONDAY...Breezy. Rain and snow showers likely in the morning.
chance of showers in the afternoon. chance of snow showers in the
afternoon and evening. East winds 20 to 25 knots. Waves 8 to
12 feet.
.TUESDAY...Chance of snow showers. Southwest winds 15 to
20 knots. Waves 5 to 7 feet.
$$
LSZ267-061500-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
415 AM EST Fri Dec 6 2024
.Today...
Weather.............Snow showers likely.
Sfc winds...........West to 30 knots.
100-ft winds........West gales to 35 knots.
Sig waves...........8 to 12 feet.
Ocnl waves..........Around 13 feet.
.TONIGHT...
Weather.............Mostly cloudy with a slight chance of snow
showers, then mostly cloudy with chance of snow
showers after midnight.
Sfc winds...........North 10 to 15 knots.
100-ft winds........North 15 to 20 knots.
Sig waves...........6 to 9 feet subsiding to 3 to 5 feet after
midnight.
Ocnl waves..........Around 10 feet subsiding to around 6 feet after
midnight.
.SATURDAY...
Weather.............Snow showers likely, then snow showers in the
afternoon.
Sfc winds...........South 15 to 20 knots.
100-ft winds........South 20 to 25 knots.
Sig waves...........3 to 5 feet.
Ocnl waves..........Around 6 feet.
.SATURDAY NIGHT...
Weather.............Cloudy with chance of rain and snow showers,
then cloudy with chance of showers after
midnight.
Sfc winds...........Southwest 15 to 20 knots becoming west after
midnight.
100-ft winds........Southwest 20 to 25 knots becoming west after
midnight.
Sig waves...........3 to 5 feet.
Ocnl waves..........Around 6 feet.
.FORECAST DAYS 3 THROUGH 5...
.SUNDAY...Chance of rain and snow showers in the afternoon. rain
and snow showers likely. North winds 10 to 15 knots. Waves 6 to
9 feet.
.MONDAY...Breezy. Rain and snow showers likely in the morning.
chance of showers in the afternoon. chance of snow showers in the
afternoon and evening. East winds 20 to 25 knots. Waves 8 to
12 feet.
.TUESDAY...Chance of snow showers. Southwest winds 15 to
20 knots. Waves 5 to 7 feet.
$$
LSZ261-061500-
MAFOR 0610/
Superior West 11640 19647 11640 11720 12710 11700 11600 11527.
Waves 5 to 8 feet subsiding to 1 to 3 feet today. Waves 2 feet or
less tonight.
Superior North Central 11640 19647 12730 12720 11710 11600 11510.
Waves 5 to 8 feet subsiding to 3 to 5 feet today. Waves 2 to 4
feet subsiding to 1 to 3 feet tonight.
Superior South Central 13640 11730 11720 11710 11610 11510. A
chance of snow showers today and overnight. Waves 4 to 7 feet
subsiding to 3 to 6 feet today. Waves 2 to 4 feet subsiding to 1
to 3 feet tonight.
Superior East 13647 11730 11830 11820 11110 11300. Waves 5 to 9
feet today. Waves 3 to 6 feet subsiding to 1 to 3 feet tonight.
$$
Occasional waves will only be displayed when values meet or exceed 5 feet.
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