FZUS63 KMQT 101415
GLFLS
Experimental Tabular Open Lake Forecast for Lake Superior
National Weather Service Negaunee MI
1015 AM EDT Wed Jun 10 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...Weak ridging of 29.8 inches this morning gives way to troughing by
this afternoon, with the troughing deepening to around 29.5 inches
by this evening as the parent low tracks into northern Ontario at
29.3 inches. Pressure over Lake Superior hold at around 29.6 inches
on Thursday until another Colorado low lifts into the Upper Great
Lakes at around 29.5 inches in the evening. Behind the low,
troughing progressively weakens to 29.8 inches Friday through Friday
night. While troughing may restrengthen a little to 29.7 inches on
Saturday, expect weak ridging of 30.0 inches to return to Lake
Superior on Sunday.
LSZ162-102000-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
1000 AM EDT Wed Jun 10 2026 /900 AM CDT Wed Jun 10 2026/
, DENSE FOG ADVISORY IN EFFECT UNTIL 8 AM EDT /7 AM CDT/
THURSDAY,
.REST OF TODAY, East winds 10 to 20 knots backing northeast in
the afternoon, then veering east late. Patchy dense fog. A slight
chance of showers by late morning. A chance of thunderstorms.
Showers likely by mid afternoon. Waves 1 to 3 feet.
.TONIGHT, South winds 5 to 15 knots becoming southwest 10 to
20 knots after midnight, then increasing to 15 to 25 knots late.
Showers likely and a chance of thunderstorms through midnight.
Some thunderstorms may be severe. Waves subsiding to calm to
2 feet, then building to 1 to 3 feet.
.THURSDAY, Southwest winds 15 to 25 knots. A chance of showers
by mid afternoon. Waves building to 3 to 5 feet occasionally to
7 feet, then subsiding to 2 to 4 feet.
.THURSDAY NIGHT, Southwest winds 15 to 25 knots veering west
after midnight. A chance of showers. Waves subsiding to 1 to
3 feet, then building to 2 to 4 feet.
.FRIDAY, Southwest winds 20 to 30 knots. A slight chance of
showers by mid afternoon. Waves building to 4 to 7 feet
occasionally to 9 feet, then subsiding to 3 to 6 feet
occasionally to 8 feet.
.FRIDAY NIGHT, West winds 10 to 20 knots increasing to 15 to
25 knots after midnight. Waves subsiding to 1 to 3 feet, then
building to 2 to 4 feet.
.SATURDAY, West winds 15 to 25 knots diminishing to 10 to
20 knots. Waves subsiding to calm to 2 feet.
.SUNDAY, West winds 15 to 25 knots diminishing to 10 to
20 knots. Waves building to 1 to 3 feet, then subsiding to calm
to 2 feet.
LSZ162-102000-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
1015 AM EDT Wed Jun 10 2026 /915 AM CDT Wed Jun 10 2026/
...DENSE FOG ADVISORY IN EFFECT UNTIL 8 AM EDT /7 AM CDT/
THURSDAY...
.This Afternoon...
Weather.............Mostly cloudy with chance of showers with
possible thunderstorms and fog, then mostly
cloudy with a slight chance of showers,
thunderstorms and patchy dense fog in the
afternoon.
Sfc winds...........Northeast 10 to 15 knots.
100-ft winds........Northeast 15 to 20 knots.
Sig waves...........2 to 4 feet building to 3 to 5 feet in the
afternoon.
Ocnl waves..........Around 5 feet.
.TONIGHT...
Weather.............Mostly cloudy with showers likely with possible
thunderstorms and fog, then mostly cloudy after
midnight.
Sfc winds...........Northeast 5 to 10 knots becoming southwest 10
to 15 knots after midnight.
100-ft winds........Northeast 10 to 15 knots becoming southwest 15
to 20 knots after midnight.
Sig waves...........2 to 4 feet.
Ocnl waves..........Around 5 feet.
.THURSDAY...
Weather.............Mostly sunny, then mostly cloudy with chance of
showers in the afternoon.
Sfc winds...........Southwest 10 to 15 knots.
100-ft winds........Southwest 15 to 20 knots.
Sig waves...........4 to 6 feet.
Ocnl waves..........Around 7 feet.
.THURSDAY NIGHT...
Weather.............Mostly cloudy with chance of showers.
Sfc winds...........Southwest 10 to 15 knots.
100-ft winds........Southwest 15 to 20 knots.
Sig waves...........3 to 5 feet.
Ocnl waves..........Around 6 feet.
.FORECAST DAYS 3 THROUGH 5...
.FRIDAY...Chance of showers in the morning. Southwest winds 15 to
20 knots. Waves 6 to 9 feet.
.SATURDAY...Southwest winds 15 to 20 knots. Waves 4 to 6 feet.
.SUNDAY...West winds 10 to 15 knots. Waves 4 to 6 feet.
$$
LSZ263-102000-
Lake Superior from Saxon Harbor WI to Upper Entrance to Portage
Canal MI 5NM off shore to the US/Canadian border including Isle
Royale National Park-
1015 AM EDT Wed Jun 10 2026
...DENSE FOG ADVISORY IN EFFECT UNTIL 8 AM EDT THURSDAY...
.This Afternoon...
Weather.............Mostly cloudy with chance of showers with
possible thunderstorms and fog, then mostly
cloudy with chance of showers, thunderstorms
and patchy dense fog in the afternoon.
Sfc winds...........Northeast 10 to 15 knots.
100-ft winds........Northeast 15 to 20 knots.
Sig waves...........2 to 4 feet.
Ocnl waves..........Around 5 feet in the afternoon.
.TONIGHT...
Weather.............Mostly cloudy with showers likely with possible
thunderstorms and fog, then mostly cloudy with
chance of showers after midnight.
Sfc winds...........Northeast 10 to 15 knots becoming southwest 15
to 20 knots after midnight.
100-ft winds........Northeast 15 to 20 knots becoming southwest 20
to 25 knots after midnight.
Sig waves...........4 to 6 feet.
Ocnl waves..........Around 7 feet.
.THURSDAY...
Weather.............Mostly cloudy, then chance of showers in the
afternoon.
Sfc winds...........Southwest 15 to 20 knots.
100-ft winds........Southwest 20 to 25 knots.
Sig waves...........5 to 7 feet.
Ocnl waves..........Around 8 feet.
.THURSDAY NIGHT...
Weather.............Mostly cloudy with chance of showers.
Sfc winds...........Southwest 15 to 20 knots.
100-ft winds........Southwest 20 to 25 knots.
Sig waves...........5 to 7 feet.
Ocnl waves..........Around 9 feet.
.FORECAST DAYS 3 THROUGH 5...
.FRIDAY...Chance of showers in the morning. Southwest winds 15 to
20 knots. Waves 6 to 9 feet.
.SATURDAY...Southwest winds 15 to 20 knots. Waves 4 to 6 feet.
.SUNDAY...West winds 10 to 15 knots. Waves 4 to 6 feet.
$$
LSZ264-102000-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
1015 AM EDT Wed Jun 10 2026
...DENSE FOG ADVISORY IN EFFECT UNTIL 8 AM EDT THURSDAY...
.This Afternoon...
Weather.............Mostly cloudy with areas of dense fog, then
mostly cloudy with areas of dense fog, chance
of showers and thunderstorms in the afternoon.
Sfc winds...........East 15 to 20 knots.
100-ft winds........East 20 to 25 knots.
Sig waves...........2 to 4 feet building to 3 to 5 feet in the
afternoon.
Ocnl waves..........Around 6 feet in the afternoon.
.TONIGHT...
Weather.............Mostly cloudy with showers likely with possible
thunderstorms and fog, then mostly cloudy with
chance of showers after midnight.
Sfc winds...........Southeast 15 to 20 knots.
100-ft winds........Southeast 20 to 25 knots.
Sig waves...........4 to 6 feet.
Ocnl waves..........Around 8 feet.
.THURSDAY...
Weather.............Partly sunny.
Sfc winds...........Southwest 15 to 20 knots.
100-ft winds........Southwest 20 to 25 knots.
Sig waves...........4 to 6 feet.
Ocnl waves..........Around 8 feet.
.THURSDAY NIGHT...
Weather.............Showers likely, then mostly cloudy with chance
of showers after midnight.
Sfc winds...........Southwest 15 to 20 knots.
100-ft winds........Southwest 20 to 25 knots.
Sig waves...........5 to 7 feet.
Ocnl waves..........Around 8 feet.
.FORECAST DAYS 3 THROUGH 5...
.FRIDAY...Chance of showers in the morning. Southwest winds 15 to
20 knots. Waves 6 to 9 feet.
.SATURDAY...Southwest winds 15 to 20 knots. Waves 4 to 6 feet.
.SUNDAY...West winds 10 to 15 knots. Waves 4 to 6 feet.
$$
LSZ265-102000-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
1015 AM EDT Wed Jun 10 2026
...DENSE FOG ADVISORY IN EFFECT UNTIL 8 AM EDT THURSDAY...
.This Afternoon...
Weather.............Mostly cloudy with areas of dense fog, then
mostly cloudy with a slight chance of showers,
thunderstorms and patchy dense fog in the
afternoon.
Sfc winds...........Southeast 10 to 15 knots increasing to east 20
to 25 knots in the afternoon.
100-ft winds........Southeast 15 to 20 knots increasing to east to
30 knots in the afternoon.
Sig waves...........2 to 4 feet building to 4 to 6 feet in the
afternoon.
Ocnl waves..........Around 8 feet in the afternoon.
.TONIGHT...
Weather.............Mostly cloudy with chance of showers and
thunderstorms, then mostly cloudy with chance
of showers after midnight.
Sfc winds...........Southeast 20 to 25 knots decreasing to 10 to 15
knots after midnight.
100-ft winds........Southeast to 30 knots decreasing to 15 to 20
knots after midnight.
Sig waves...........4 to 6 feet.
Ocnl waves..........Around 8 feet.
.THURSDAY...
Weather.............Partly sunny.
Sfc winds...........Southwest 10 to 15 knots.
100-ft winds........Southwest 15 to 20 knots.
Sig waves...........2 to 4 feet.
Ocnl waves..........Around 5 feet in the morning.
.THURSDAY NIGHT...
Weather.............Showers likely.
Sfc winds...........South 10 to 15 knots becoming west 15 to 20
knots after midnight.
100-ft winds........South 15 to 20 knots becoming west 20 to 25
knots after midnight.
Sig waves...........2 to 4 feet building to 3 to 5 feet after
midnight.
Ocnl waves..........Around 6 feet after midnight.
.FORECAST DAYS 3 THROUGH 5...
.FRIDAY...Chance of showers in the morning. Southwest winds 15 to
20 knots. Waves 6 to 9 feet.
.SATURDAY...Southwest winds 15 to 20 knots. Waves 4 to 6 feet.
.SUNDAY...West winds 10 to 15 knots. Waves 4 to 6 feet.
$$
LSZ266-102000-
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 AM EDT Wed Jun 10 2026
...DENSE FOG ADVISORY IN EFFECT UNTIL 8 AM EDT THURSDAY...
.This Afternoon...
Weather.............Mostly cloudy with areas of dense fog.
Sfc winds...........Southeast 10 to 15 knots.
100-ft winds........Southeast 15 to 20 knots.
Sig waves...........2 to 4 feet building to 4 to 6 feet in the
afternoon.
Ocnl waves..........Around 7 feet in the afternoon.
.TONIGHT...
Weather.............Mostly cloudy with chance of showers,
thunderstorms with areas of dense fog, then
mostly cloudy with chance of showers after
midnight.
Sfc winds...........Southeast 15 to 20 knots.
100-ft winds........Southeast 20 to 25 knots.
Sig waves...........4 to 6 feet.
Ocnl waves..........Around 8 feet.
.THURSDAY...
Weather.............Partly sunny.
Sfc winds...........Southwest 10 to 15 knots.
100-ft winds........Southwest 15 to 20 knots.
Sig waves...........4 to 6 feet.
Ocnl waves..........Around 8 feet.
.THURSDAY NIGHT...
Weather.............Showers, then mostly cloudy with chance of
showers after midnight.
Sfc winds...........East 10 to 15 knots becoming northwest 15 to 20
knots after midnight.
100-ft winds........East 15 to 20 knots becoming northwest 20 to 25
knots after midnight.
Sig waves...........3 to 5 feet.
Ocnl waves..........Around 6 feet.
.FORECAST DAYS 3 THROUGH 5...
.FRIDAY...Chance of showers in the morning. Southwest winds 15 to
20 knots. Waves 6 to 9 feet.
.SATURDAY...Southwest winds 15 to 20 knots. Waves 4 to 6 feet.
.SUNDAY...West winds 10 to 15 knots. Waves 4 to 6 feet.
$$
LSZ267-102000-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
1015 AM EDT Wed Jun 10 2026
...DENSE FOG ADVISORY IN EFFECT UNTIL 8 AM EDT THURSDAY...
.This Afternoon...
Weather.............Mostly cloudy with areas of dense fog.
Sfc winds...........Light and variable winds becoming southeast 5
to 10 knots in the afternoon.
100-ft winds........Light and variable winds becoming southeast 10
to 15 knots in the afternoon.
Sig waves...........1 to 3 feet.
.TONIGHT...
Weather.............Mostly cloudy with chance of showers and
thunderstorms, then mostly cloudy with chance
of showers and slight chance of thunderstorms
after midnight.
Sfc winds...........Southeast 15 to 20 knots.
100-ft winds........Southeast 20 to 25 knots.
Sig waves...........3 to 5 feet.
Ocnl waves..........Around 5 feet.
.THURSDAY...
Weather.............Partly sunny.
Sfc winds...........South 10 to 15 knots becoming west 5 to 10
knots in the afternoon.
100-ft winds........South 15 to 20 knots becoming west 10 to 15
knots in the afternoon.
Sig waves...........3 to 5 feet subsiding to 2 to 4 feet in the
afternoon.
Ocnl waves..........Around 6 feet in the morning.
.THURSDAY NIGHT...
Weather.............Showers.
Sfc winds...........East 10 to 15 knots becoming northeast after
midnight.
100-ft winds........East 15 to 20 knots becoming northeast after
midnight.
Sig waves...........2 to 4 feet.
Ocnl waves..........Around 5 feet after midnight.
.FORECAST DAYS 3 THROUGH 5...
.FRIDAY...Chance of showers in the morning. Southwest winds 15 to
20 knots. Waves 6 to 9 feet.
.SATURDAY...Southwest winds 15 to 20 knots. Waves 4 to 6 feet.
.SUNDAY...West winds 10 to 15 knots. Waves 4 to 6 feet.
$$
LSZ261-102000-
MAFOR 1015/
Superior West 12220 19224 11226 11426 11520 11530 11520 11530. A
chance of thunderstorms this afternoon and evening. Waves 1 to 3
feet this afternoon and tonight. Waves 2 to 4 feet Thursday
morning.
Superior North Central 11324 12334 11336 11420 13530. A chance of
thunderstorms this evening. Waves 1 to 2 feet building to 2 to 4
feet this afternoon. Waves 3 to 5 feet subsiding to 2 to 4 feet
tonight. Waves 3 to 5 feet Thursday morning.
Superior South Central 11334 11330 19334 12340 11430 11420 12620.
A chance of showers and thunderstorms this evening, then a chance
of showers overnight. Waves 1 to 3 feet building to 3 to 5 feet
this afternoon. Waves 3 to 5 feet subsiding to 2 to 4 feet
tonight. Waves 1 to 3 feet Thursday morning.
Superior East 11304 11210 12320 11330 11420 12520. A chance of
showers and thunderstorms this evening, then a chance of showers
overnight. Waves 2 feet or less this afternoon. Waves 1 to 3 feet
building to 2 to 4 feet tonight. Waves 2 to 4 feet Thursday
morning.
$$
Occasional waves will only be displayed when values meet or exceed 5 feet.
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