A series of Pacific storm systems will bring widespread showers, heavy rain, and a flash flooding threat across the Four Corners region this weekend. Ex-Typhoon Champi will approach the Alaskan West Coast bringing localized gusty winds and heavy precipitation. A wet and unsettled weekend is expected across southern Florida with rain expected across the entire peninsula by Sunday. Read More >
FZUS63 KMQT 310215
GLFLS
Experimental Tabular Open Lake Forecast for Lake Superior
National Weather Service Negaunee MI
1015 PM EDT Fri Oct 30 2026
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 30.3 inch high pressure over the Upper Great Lakes will slowly
shift east through Saturday and build to 30.4 inches. This will keep
ridging of 30.2 inches over the lake through Sunday. The ridge will
weaken to 30.0 inches as the high moves to the Eastern Seaboard on
Monday. A 29.6 inch Colorado low develops on Monday and moves into
Minnesota by Tuesday morning. This low passes north of Lake Superior
into northern Ontario Tuesday night at 29.5 inches, dragging
troughing of at least 29.6 inches over the western half of the lake
Tuesday into Wednesday.
LSZ162-310800-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
1000 PM EDT Fri Oct 30 2026 /900 PM CDT Fri Oct 30 2026/
.REST OF TONIGHT, South winds less than 10 knots. Waves calm to
2 feet.
.SATURDAY, Southeast winds less than 10 knots becoming east 5 to
15 knots in the afternoon. A slight chance of showers by mid
afternoon. Waves calm to 2 feet.
.SATURDAY NIGHT, East winds 5 to 15 knots becoming northeast
less than 10 knots after midnight, then veering south late. A
chance of showers. Waves calm to 2 feet.
.SUNDAY, Southwest winds less than 10 knots increasing to 5 to
15 knots by mid afternoon. Waves calm to 2 feet.
.SUNDAY NIGHT, South winds less than 10 knots backing east after
midnight. Waves calm to 2 feet.
.MONDAY, East winds 5 to 15 knots increasing to 10 to 20 knots
by mid afternoon. A chance of showers through early afternoon,
then showers likely by mid afternoon. Waves calm to 2 feet.
.MONDAY NIGHT, East winds 10 to 20 knots increasing to 15 to
25 knots after midnight. Showers. Waves building to 2 to 4 feet.
.TUESDAY, East winds 15 to 25 knots becoming west 10 to
20 knots. Showers, then a chance of showers. Waves subsiding to
calm to 2 feet.
.WEDNESDAY, West winds 10 to 20 knots becoming northwest 15 to
25 knots. A chance of showers. Waves building to 1 to 3 feet.
LSZ162-310800-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
1015 PM EDT Fri Oct 30 2026 /915 PM CDT Fri Oct 30 2026/
.Overnight...
Weather.............Partly cloudy.
Sfc winds...........Light and variable winds.
100-ft winds........Light and variable winds.
Sig waves...........1 to 3 feet.
.SATURDAY...
Weather.............Mostly sunny.
Sfc winds...........Light and variable winds.
100-ft winds........Light and variable winds.
Sig waves...........2 feet or less.
.SATURDAY NIGHT...
Weather.............Mostly cloudy with chance of showers.
Sfc winds...........East 5 to 10 knots in the evening becoming
light and variable.
100-ft winds........East 10 to 15 knots in the evening becoming
light and variable.
Sig waves...........1 to 3 feet.
.SUNDAY...
Weather.............Mostly cloudy.
Sfc winds...........Light and variable winds.
100-ft winds........Light and variable winds.
Sig waves...........2 feet or less.
.SUNDAY NIGHT...
Weather.............Mostly cloudy.
Sfc winds...........Light and variable winds.
100-ft winds........Light and variable winds.
Sig waves...........2 feet or less.
.FORECAST DAYS 3 THROUGH 5...
.MONDAY...Chance of showers in the afternoon and evening. showers
likely after midnight. Southeast winds 10 to 15 knots. Waves 5 to
7 feet.
.TUESDAY...Showers. showers likely. Northeast winds 15 to
20 knots. Waves 8 to 12 feet.
.WEDNESDAY...Chance of showers. South winds 10 to 15 knots. Waves
5 to 7 feet.
$$
LSZ263-310800-
Lake Superior from Saxon Harbor WI to Upper Entrance to Portage
Canal MI 5NM off shore to the US/Canadian border including Isle
Royale National Park-
1015 PM EDT Fri Oct 30 2026
.Overnight...
Weather.............Partly cloudy.
Sfc winds...........Southwest 5 to 10 knots becoming south after
midnight.
100-ft winds........Southwest 10 to 15 knots becoming south after
midnight.
Sig waves...........2 to 4 feet.
.SATURDAY...
Weather.............Mostly sunny.
Sfc winds...........Light and variable winds.
100-ft winds........Light and variable winds.
Sig waves...........2 feet or less.
.SATURDAY NIGHT...
Weather.............Mostly cloudy, then chance of showers after
midnight.
Sfc winds...........East 5 to 10 knots.
100-ft winds........East 10 to 15 knots.
Sig waves...........1 to 3 feet.
.SUNDAY...
Weather.............Mostly cloudy.
Sfc winds...........South 5 to 10 knots.
100-ft winds........South 10 to 15 knots.
Sig waves...........1 to 3 feet.
.SUNDAY NIGHT...
Weather.............Mostly cloudy.
Sfc winds...........Light and variable winds becoming south 5 to 10
knots after midnight.
100-ft winds........Light and variable winds becoming south 10 to
15 knots after midnight.
Sig waves...........2 feet or less.
.FORECAST DAYS 3 THROUGH 5...
.MONDAY...Chance of showers in the afternoon and evening. showers
likely after midnight. Southeast winds 10 to 15 knots. Waves 5 to
7 feet.
.TUESDAY...Showers. showers likely. Northeast winds 15 to
20 knots. Waves 8 to 12 feet.
.WEDNESDAY...Chance of showers. South winds 10 to 15 knots. Waves
5 to 7 feet.
$$
LSZ264-310800-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
1015 PM EDT Fri Oct 30 2026
.Overnight...
Weather.............Partly cloudy.
Sfc winds...........West 5 to 10 knots.
100-ft winds........West 10 to 15 knots.
Sig waves...........2 to 4 feet.
.SATURDAY...
Weather.............Sunny.
Sfc winds...........Southwest 5 to 10 knots in the morning becoming
light and variable.
100-ft winds........Southwest 10 to 15 knots in the morning
becoming light and variable.
Sig waves...........1 to 3 feet.
.SATURDAY NIGHT...
Weather.............Partly cloudy.
Sfc winds...........Southeast 5 to 10 knots.
100-ft winds........Southeast 10 to 15 knots.
Sig waves...........1 to 3 feet.
.SUNDAY...
Weather.............Mostly cloudy.
Sfc winds...........Southwest 5 to 10 knots.
100-ft winds........Southwest 10 to 15 knots.
Sig waves...........1 to 3 feet.
.SUNDAY NIGHT...
Weather.............Mostly cloudy.
Sfc winds...........Southwest 5 to 10 knots becoming south after
midnight.
100-ft winds........Southwest 10 to 15 knots becoming south after
midnight.
Sig waves...........1 to 3 feet.
.FORECAST DAYS 3 THROUGH 5...
.MONDAY...Chance of showers in the afternoon and evening. showers
likely after midnight. Southeast winds 10 to 15 knots. Waves 5 to
7 feet.
.TUESDAY...Showers. showers likely. Northeast winds 15 to
20 knots. Waves 8 to 12 feet.
.WEDNESDAY...Chance of showers. South winds 10 to 15 knots. Waves
5 to 7 feet.
$$
LSZ265-310800-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
1015 PM EDT Fri Oct 30 2026
.Overnight...
Weather.............Partly cloudy.
Sfc winds...........West 5 to 10 knots becoming southwest after
midnight.
100-ft winds........West 10 to 15 knots becoming southwest after
midnight.
Sig waves...........1 to 3 feet.
.SATURDAY...
Weather.............Sunny.
Sfc winds...........South 5 to 10 knots.
100-ft winds........South 10 to 15 knots.
Sig waves...........2 feet or less.
.SATURDAY NIGHT...
Weather.............Mostly cloudy.
Sfc winds...........Southeast 10 to 15 knots.
100-ft winds........Southeast 15 to 20 knots.
Sig waves...........2 to 4 feet.
.SUNDAY...
Weather.............Partly sunny.
Sfc winds...........South 5 to 10 knots in the morning becoming
light and variable.
100-ft winds........South 10 to 15 knots in the morning becoming
light and variable.
Sig waves...........1 to 3 feet.
.SUNDAY NIGHT...
Weather.............Mostly cloudy.
Sfc winds...........Light and variable winds.
100-ft winds........Light and variable winds.
Sig waves...........2 feet or less.
.FORECAST DAYS 3 THROUGH 5...
.MONDAY...Chance of showers in the afternoon and evening. showers
likely after midnight. Southeast winds 10 to 15 knots. Waves 5 to
7 feet.
.TUESDAY...Showers. showers likely. Northeast winds 15 to
20 knots. Waves 8 to 12 feet.
.WEDNESDAY...Chance of showers. South winds 10 to 15 knots. Waves
5 to 7 feet.
$$
LSZ266-310800-
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-
1015 PM EDT Fri Oct 30 2026
.Overnight...
Weather.............Partly cloudy.
Sfc winds...........West 5 to 10 knots.
100-ft winds........West 10 to 15 knots.
Sig waves...........2 to 4 feet.
.SATURDAY...
Weather.............Sunny.
Sfc winds...........South 5 to 10 knots.
100-ft winds........South 10 to 15 knots.
Sig waves...........1 to 3 feet.
.SATURDAY NIGHT...
Weather.............Partly cloudy.
Sfc winds...........South 10 to 15 knots.
100-ft winds........South 15 to 20 knots.
Sig waves...........2 to 4 feet.
.SUNDAY...
Weather.............Partly sunny.
Sfc winds...........South 10 to 15 knots.
100-ft winds........South 15 to 20 knots.
Sig waves...........2 to 4 feet.
.SUNDAY NIGHT...
Weather.............Mostly cloudy.
Sfc winds...........South 5 to 10 knots.
100-ft winds........South 10 to 15 knots.
Sig waves...........1 to 3 feet.
.FORECAST DAYS 3 THROUGH 5...
.MONDAY...Chance of showers in the afternoon and evening. showers
likely after midnight. Southeast winds 10 to 15 knots. Waves 5 to
7 feet.
.TUESDAY...Showers. showers likely. Northeast winds 15 to
20 knots. Waves 8 to 12 feet.
.WEDNESDAY...Chance of showers. South winds 10 to 15 knots. Waves
5 to 7 feet.
$$
LSZ267-310800-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
1015 PM EDT Fri Oct 30 2026
.Overnight...
Weather.............Mostly cloudy.
Sfc winds...........West 10 to 15 knots.
100-ft winds........West 15 to 20 knots.
Sig waves...........3 to 5 feet subsiding to 2 to 4 feet after
midnight.
Ocnl waves..........Around 5 feet.
.SATURDAY...
Weather.............Sunny.
Sfc winds...........Southwest 10 to 15 knots.
100-ft winds........Southwest 15 to 20 knots.
Sig waves...........2 to 4 feet.
.SATURDAY NIGHT...
Weather.............Partly cloudy.
Sfc winds...........South 10 to 15 knots.
100-ft winds........South 15 to 20 knots.
Sig waves...........2 to 4 feet.
.SUNDAY...
Weather.............Mostly cloudy.
Sfc winds...........South 10 to 15 knots.
100-ft winds........South 15 to 20 knots.
Sig waves...........2 to 4 feet.
.SUNDAY NIGHT...
Weather.............Mostly cloudy.
Sfc winds...........South 5 to 10 knots.
100-ft winds........South 10 to 15 knots.
Sig waves...........1 to 3 feet.
.FORECAST DAYS 3 THROUGH 5...
.MONDAY...Chance of showers in the afternoon and evening. showers
likely after midnight. Southeast winds 10 to 15 knots. Waves 5 to
7 feet.
.TUESDAY...Showers. showers likely. Northeast winds 15 to
20 knots. Waves 8 to 12 feet.
.WEDNESDAY...Chance of showers. South winds 10 to 15 knots. Waves
5 to 7 feet.
$$
LSZ261-310800-
MAFOR 3103/
Superior West 13400 12300 13200. Waves 1 foot or less.
Superior North Central 11600 14500 11400 12300. Waves 1 foot or
less.
Superior South Central 11600 13500 11400 11300 11310 11420. Waves
2 feet or less.
Superior East 11600 14500 11500 11400 11410. Waves 1 to 3 feet.
$$
Occasional waves will only be displayed when values meet or exceed 5 feet.
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