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FZUS63 KMQT 302015
GLFLS
Experimental Tabular Open Lake Forecast for Lake Superior
National Weather Service Negaunee MI
415 PM EDT Sat May 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 northern Ontario will weaken
throughout today, becoming 30.2 inches over the Upper Great Lakes
tonight. The high remains over the area into tomorrow while
progressively weakening with time, eventually becoming around 30.0
inches by late tomorrow as another 30.4 inch high approaches the
area from Hudson Bay. This second high settles north of the Great
Lakes Monday before arriving over the lake by Tuesday. The high
moves over the Lower Great Lakes at 30.2 inches Wednesday evening as
a 29.9 inch trough moves over the Northern Plains. This trough moves
near Lake Superior Thursday, strengthening to 29.7 inches.
LSZ162-310800-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
401 PM EDT Sat May 30 2026 /301 PM CDT Sat May 30 2026/
.LATE THIS AFTERNOON, Northeast winds 10 to 20 knots. Waves 3 to
5 feet occasionally to 7 feet.
.TONIGHT, Northeast winds 10 to 20 knots diminishing to 5 to
15 knots after midnight. Waves subsiding to calm to 2 feet.
.SUNDAY, Northeast winds 5 to 15 knots. Waves calm to 2 feet.
.SUNDAY NIGHT, North winds 5 to 15 knots veering northeast late.
Waves calm to 2 feet.
.MONDAY, Northeast winds 10 to 20 knots increasing to 15 to
25 knots by mid afternoon. Waves building to 2 to 4 feet.
.MONDAY NIGHT, Northeast winds 10 to 20 knots diminishing to
5 to 15 knots after midnight. Waves subsiding to calm to 2 feet.
.TUESDAY, Northeast winds 5 to 15 knots. Waves calm to 2 feet.
.TUESDAY NIGHT, Northeast winds 5 to 15 knots becoming north
less than 10 knots after midnight. Waves calm to 2 feet.
.WEDNESDAY, Southwest winds 5 to 15 knots. A chance of showers.
Waves calm to 2 feet.
.THURSDAY, Southwest winds 5 to 15 knots becoming west 10 to
20 knots. A chance of showers. Waves calm to 2 feet.
LSZ162-310200-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
415 PM EDT Sat May 30 2026 /315 PM CDT Sat May 30 2026/
.Tonight...
Weather.............Mostly clear.
Sfc winds...........Northeast 15 to 20 knots becoming east 5 to 10
knots after midnight.
100-ft winds........Northeast 20 to 25 knots becoming east 10 to 15
knots after midnight.
Sig waves...........4 to 6 feet.
Ocnl waves..........Around 8 feet.
.SUNDAY...
Weather.............Sunny.
Sfc winds...........Light and variable winds.
100-ft winds........Light and variable winds.
Sig waves...........2 to 4 feet.
.SUNDAY NIGHT...
Weather.............Partly cloudy.
Sfc winds...........Light and variable winds.
100-ft winds........Light and variable winds.
Sig waves...........1 to 3 feet.
.MONDAY...
Weather.............Mostly sunny.
Sfc winds...........Northeast 15 to 20 knots.
100-ft winds........Northeast 20 to 25 knots.
Sig waves...........2 to 4 feet building to 4 to 6 feet in the
afternoon.
Ocnl waves..........Around 5 feet building to around 7 feet in the
afternoon.
.MONDAY NIGHT...
Weather.............Mostly clear.
Sfc winds...........Northeast 10 to 15 knots.
100-ft winds........Northeast 15 to 20 knots.
Sig waves...........3 to 5 feet.
Ocnl waves..........Around 6 feet.
.FORECAST DAYS 3 THROUGH 5...
.TUESDAY...North winds 5 to 10 knots. Waves 2 to 4 feet.
.WEDNESDAY...Chance of showers after midnight. South winds 5 to
10 knots. Waves 3 to 5 feet.
.THURSDAY...Chance of showers. South winds 10 to 15 knots. Waves
4 to 6 feet.
$$
LSZ263-310200-
Lake Superior from Saxon Harbor WI to Upper Entrance to Portage
Canal MI 5NM off shore to the US/Canadian border including Isle
Royale National Park-
415 PM EDT Sat May 30 2026
.Tonight...
Weather.............Mostly clear.
Sfc winds...........Northeast 10 to 15 knots.
100-ft winds........Northeast 15 to 20 knots.
Sig waves...........3 to 5 feet.
Ocnl waves..........Around 7 feet.
.SUNDAY...
Weather.............Sunny.
Sfc winds...........Northeast 5 to 10 knots.
100-ft winds........Northeast 10 to 15 knots.
Sig waves...........1 to 3 feet.
.SUNDAY NIGHT...
Weather.............Partly cloudy.
Sfc winds...........Northeast 5 to 10 knots in the evening becoming
light and variable.
100-ft winds........Northeast 10 to 15 knots in the evening
becoming light and variable.
Sig waves...........1 to 3 feet.
.MONDAY...
Weather.............Mostly sunny.
Sfc winds...........Northeast 15 to 20 knots.
100-ft winds........Northeast 20 to 25 knots.
Sig waves...........2 to 4 feet building to 3 to 5 feet in the
afternoon.
Ocnl waves..........Around 5 feet building to around 6 feet in the
afternoon.
.MONDAY NIGHT...
Weather.............Mostly clear.
Sfc winds...........Northeast 10 to 15 knots.
100-ft winds........Northeast 15 to 20 knots.
Sig waves...........3 to 5 feet.
Ocnl waves..........Around 6 feet.
.FORECAST DAYS 3 THROUGH 5...
.TUESDAY...North winds 5 to 10 knots. Waves 2 to 4 feet.
.WEDNESDAY...Chance of showers after midnight. South winds 5 to
10 knots. Waves 3 to 5 feet.
.THURSDAY...Chance of showers. South winds 10 to 15 knots. Waves
4 to 6 feet.
$$
LSZ264-310200-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
415 PM EDT Sat May 30 2026
.Tonight...
Weather.............Mostly clear.
Sfc winds...........East 10 to 15 knots.
100-ft winds........East 15 to 20 knots.
Sig waves...........2 to 4 feet.
Ocnl waves..........Around 5 feet in the evening.
.SUNDAY...
Weather.............Sunny.
Sfc winds...........South 5 to 10 knots.
100-ft winds........South 10 to 15 knots.
Sig waves...........1 to 3 feet.
.SUNDAY NIGHT...
Weather.............Partly cloudy.
Sfc winds...........Light and variable winds.
100-ft winds........Light and variable winds.
Sig waves...........2 feet or less.
.MONDAY...
Weather.............Sunny.
Sfc winds...........East 10 to 15 knots.
100-ft winds........East 15 to 20 knots.
Sig waves...........2 to 4 feet.
.MONDAY NIGHT...
Weather.............Mostly clear.
Sfc winds...........Northeast 5 to 10 knots.
100-ft winds........Northeast 10 to 15 knots.
Sig waves...........2 to 4 feet.
.FORECAST DAYS 3 THROUGH 5...
.TUESDAY...North winds 5 to 10 knots. Waves 2 to 4 feet.
.WEDNESDAY...Chance of showers after midnight. South winds 5 to
10 knots. Waves 3 to 5 feet.
.THURSDAY...Chance of showers. South winds 10 to 15 knots. Waves
4 to 6 feet.
$$
LSZ265-310200-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
415 PM EDT Sat May 30 2026
.Tonight...
Weather.............Clear.
Sfc winds...........East 10 to 15 knots.
100-ft winds........East 15 to 20 knots.
Sig waves...........3 to 5 feet subsiding to 2 to 4 feet after
midnight.
Ocnl waves..........Around 6 feet in the evening.
.SUNDAY...
Weather.............Sunny.
Sfc winds...........Light and variable winds becoming south 5 to 10
knots in the afternoon.
100-ft winds........Light and variable winds becoming south 10 to
15 knots in the afternoon.
Sig waves...........2 feet or less.
.SUNDAY NIGHT...
Weather.............Partly cloudy.
Sfc winds...........Light and variable winds.
100-ft winds........Light and variable winds.
Sig waves...........2 feet or less.
.MONDAY...
Weather.............Sunny.
Sfc winds...........East 10 to 15 knots.
100-ft winds........East 15 to 20 knots.
Sig waves...........2 to 4 feet.
.MONDAY NIGHT...
Weather.............Mostly clear.
Sfc winds...........Northeast 5 to 10 knots in the evening becoming
light and variable.
100-ft winds........Northeast 10 to 15 knots in the evening
becoming light and variable.
Sig waves...........2 to 4 feet.
.FORECAST DAYS 3 THROUGH 5...
.TUESDAY...North winds 5 to 10 knots. Waves 2 to 4 feet.
.WEDNESDAY...Chance of showers after midnight. South winds 5 to
10 knots. Waves 3 to 5 feet.
.THURSDAY...Chance of showers. South winds 10 to 15 knots. Waves
4 to 6 feet.
$$
LSZ266-310200-
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 PM EDT Sat May 30 2026
.Tonight...
Weather.............Clear.
Sfc winds...........Northeast 10 to 15 knots becoming southeast 5
to 10 knots after midnight.
100-ft winds........Northeast 15 to 20 knots becoming southeast 10
to 15 knots after midnight.
Sig waves...........2 to 4 feet.
.SUNDAY...
Weather.............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.............Partly cloudy.
Sfc winds...........Light and variable winds.
100-ft winds........Light and variable winds.
Sig waves...........1 to 3 feet.
.MONDAY...
Weather.............Sunny.
Sfc winds...........Northeast 10 to 15 knots.
100-ft winds........Northeast 15 to 20 knots.
Sig waves...........2 to 4 feet.
.MONDAY NIGHT...
Weather.............Mostly clear.
Sfc winds...........Northeast 10 to 15 knots.
100-ft winds........Northeast 15 to 20 knots.
Sig waves...........2 to 4 feet.
.FORECAST DAYS 3 THROUGH 5...
.TUESDAY...North winds 5 to 10 knots. Waves 2 to 4 feet.
.WEDNESDAY...Chance of showers after midnight. South winds 5 to
10 knots. Waves 3 to 5 feet.
.THURSDAY...Chance of showers. South winds 10 to 15 knots. Waves
4 to 6 feet.
$$
LSZ267-310200-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
415 PM EDT Sat May 30 2026
.Tonight...
Weather.............Mostly clear.
Sfc winds...........Northeast 5 to 10 knots becoming southeast
after midnight.
100-ft winds........Northeast 10 to 15 knots becoming southeast
after midnight.
Sig waves...........1 to 3 feet.
.SUNDAY...
Weather.............Sunny.
Sfc winds...........Light and variable winds becoming northwest 5
to 10 knots in the afternoon.
100-ft winds........Light and variable winds becoming northwest 10
to 15 knots in the afternoon.
Sig waves...........2 feet or less.
.SUNDAY NIGHT...
Weather.............Mostly clear.
Sfc winds...........Light and variable winds.
100-ft winds........Light and variable winds.
Sig waves...........1 to 3 feet.
.MONDAY...
Weather.............Sunny.
Sfc winds...........Northeast 10 to 15 knots.
100-ft winds........Northeast 15 to 20 knots.
Sig waves...........2 to 4 feet.
.MONDAY NIGHT...
Weather.............Mostly clear.
Sfc winds...........Northeast 10 to 15 knots.
100-ft winds........Northeast 15 to 20 knots.
Sig waves...........2 to 4 feet.
.FORECAST DAYS 3 THROUGH 5...
.TUESDAY...North winds 5 to 10 knots. Waves 2 to 4 feet.
.WEDNESDAY...Chance of showers after midnight. South winds 5 to
10 knots. Waves 3 to 5 feet.
.THURSDAY...Chance of showers. South winds 10 to 15 knots. Waves
4 to 6 feet.
$$
LSZ261-310200-
MAFOR 3021/
Superior West 12130 11120 11210 11200 13300. Waves 3 to 5 feet
subsiding to 2 to 4 feet tonight. Waves 2 feet or less Sunday.
Superior North Central 12210 12300 11400 13500. Waves 1 to 3 feet
tonight. Waves 1 foot or less Sunday.
Superior South Central 11210 11310 11300 14400 11300. Waves 1 to
3 feet tonight. Waves 1 foot or less Sunday.
Superior East 11100 11200 11300 12400 12500 11600. Waves 1 foot
or less.
$$
Occasional waves will only be displayed when values meet or exceed 5 feet.
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