FZUS63 KMQT 020215
GLFLS
Experimental Tabular Open Lake Forecast for Lake Superior
National Weather Service Negaunee MI
1015 PM EDT Wed Jul 1 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 broad 29.6 inch low over Ontario and Quebec will consolidate over
northern Quebec by Thursday evening. Thursday night, 30.1 inch high
pressure develops over the southern Appalachian range with 30.0 inch
high pressure over mostly northern Manitoba while broad troughing is
in the lee of the Rockies. Friday, the Manitboa high builds to 30.1
and expands over western Hudson Bay and far northwestern Ontario.
The high builds to 30.2 inches over Hudson Bay Saturday and into
Sunday as a weak 29.9 inch low passes through the southern Great
Lakes basin. Monday, the high quickly becomes dislodged to the
southeast by a 29.7 inch low over northern Manitoba, sending the
high over Lake Superior, northern Ontario, and Quebec. By Tuesday,
the high shifts to New England while the low moves into Hudson Bay.
LSZ162-020800-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
1001 PM EDT Wed Jul 1 2026 /901 PM CDT Wed Jul 1 2026/
.REST OF TONIGHT, Southwest winds 10 to 20 knots diminishing to
5 to 15 knots after midnight, then increasing to 10 to 20 knots
late. Waves calm to 2 feet.
.THURSDAY, Southwest winds 10 to 20 knots diminishing to 5 to
15 knots late. Waves building to 1 to 3 feet, then subsiding to
calm to 2 feet.
.THURSDAY NIGHT, West winds 5 to 15 knots veering north after
midnight, then veering northeast late. A slight chance of showers
and thunderstorms after midnight. Waves calm to 2 feet.
.FRIDAY, Northeast winds 5 to 15 knots. A slight chance of
thunderstorms through early afternoon. A chance of showers. Waves
calm to 2 feet.
.FRIDAY NIGHT, Northeast winds 5 to 15 knots. A slight chance of
showers. Waves calm to 2 feet.
.SATURDAY, Northeast winds 10 to 20 knots. A chance of showers.
Waves calm to 2 feet.
.SATURDAY NIGHT, Northeast winds 5 to 15 knots. Waves calm to
2 feet.
.SUNDAY, Northeast winds 5 to 15 knots diminishing to less than
10 knots. Waves calm to 2 feet.
.MONDAY, North winds 5 to 15 knots backing west. Waves calm to
2 feet.
LSZ162-020800-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
1015 PM EDT Wed Jul 1 2026 /915 PM CDT Wed Jul 1 2026/
.Overnight...
Weather.............Partly cloudy.
Sfc winds...........South 10 to 15 knots.
100-ft winds........South 15 to 20 knots.
Sig waves...........2 to 4 feet.
.THURSDAY...
Weather.............Sunny.
Sfc winds...........Southwest 10 to 15 knots.
100-ft winds........Southwest 15 to 20 knots.
Sig waves...........2 to 4 feet.
.THURSDAY NIGHT...
Weather.............Partly cloudy.
Sfc winds...........West 5 to 10 knots in the evening becoming
light and variable.
100-ft winds........West 10 to 15 knots in the evening becoming
light and variable.
Sig waves...........2 to 4 feet.
.FRIDAY...
Weather.............Mostly cloudy with chance of showers, then
partly sunny with chance of showers in the
afternoon.
Sfc winds...........Light and variable winds becoming northeast 5
to 10 knots in the afternoon.
100-ft winds........Light and variable winds becoming northeast 10
to 15 knots in the afternoon.
Sig waves...........1 to 3 feet.
.FRIDAY NIGHT...
Weather.............Mostly cloudy with chance of showers, then
mostly cloudy after midnight.
Sfc winds...........Northeast 5 to 10 knots.
100-ft winds........Northeast 10 to 15 knots.
Sig waves...........1 to 3 feet.
.FORECAST DAYS 3 THROUGH 5...
.SATURDAY...Slight chance of showers. chance of showers. North
winds 5 to 10 knots. Waves 2 to 4 feet.
.SUNDAY...North winds 5 to 10 knots. Waves 2 to 4 feet.
.MONDAY...North winds 5 to 10 knots. Waves 2 to 4 feet.
$$
LSZ263-020800-
Lake Superior from Saxon Harbor WI to Upper Entrance to Portage
Canal MI 5NM off shore to the US/Canadian border including Isle
Royale National Park-
1015 PM EDT Wed Jul 1 2026
.Overnight...
Weather.............Partly cloudy.
Sfc winds...........South 10 to 15 knots.
100-ft winds........South 15 to 20 knots.
Sig waves...........2 to 4 feet.
.THURSDAY...
Weather.............Sunny.
Sfc winds...........Southwest 10 to 15 knots.
100-ft winds........Southwest 15 to 20 knots.
Sig waves...........2 to 4 feet.
.THURSDAY NIGHT...
Weather.............Partly cloudy.
Sfc winds...........Southwest 10 to 15 knots.
100-ft winds........Southwest 15 to 20 knots.
Sig waves...........2 to 4 feet.
.FRIDAY...
Weather.............Partly sunny, then chance of showers in the
afternoon.
Sfc winds...........Light and variable winds becoming northeast 5
to 10 knots in the afternoon.
100-ft winds........Light and variable winds becoming northeast 10
to 15 knots in the afternoon.
Sig waves...........1 to 3 feet.
.FRIDAY NIGHT...
Weather.............Mostly cloudy.
Sfc winds...........Northeast 5 to 10 knots.
100-ft winds........Northeast 10 to 15 knots.
Sig waves...........1 to 3 feet.
.FORECAST DAYS 3 THROUGH 5...
.SATURDAY...Slight chance of showers. chance of showers. North
winds 5 to 10 knots. Waves 2 to 4 feet.
.SUNDAY...North winds 5 to 10 knots. Waves 2 to 4 feet.
.MONDAY...North winds 5 to 10 knots. Waves 2 to 4 feet.
$$
LSZ264-020800-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
1015 PM EDT Wed Jul 1 2026
.Overnight...
Weather.............Partly cloudy.
Sfc winds...........Southwest 10 to 15 knots.
100-ft winds........Southwest 15 to 20 knots.
Sig waves...........2 to 4 feet.
.THURSDAY...
Weather.............Mostly sunny.
Sfc winds...........Southwest 10 to 15 knots.
100-ft winds........Southwest 15 to 20 knots.
Sig waves...........2 to 4 feet.
.THURSDAY NIGHT...
Weather.............Partly cloudy.
Sfc winds...........Southwest 10 to 15 knots.
100-ft winds........Southwest 15 to 20 knots.
Sig waves...........2 to 4 feet.
.FRIDAY...
Weather.............Partly sunny.
Sfc winds...........North 5 to 10 knots in the morning becoming
light and variable.
100-ft winds........North 10 to 15 knots in the morning becoming
light and variable.
Sig waves...........1 to 3 feet.
.FRIDAY NIGHT...
Weather.............Mostly cloudy.
Sfc winds...........Light and variable winds becoming east 5 to 10
knots after midnight.
100-ft winds........Light and variable winds becoming east 10 to 15
knots after midnight.
Sig waves...........2 feet or less.
.FORECAST DAYS 3 THROUGH 5...
.SATURDAY...Slight chance of showers. chance of showers. North
winds 5 to 10 knots. Waves 2 to 4 feet.
.SUNDAY...North winds 5 to 10 knots. Waves 2 to 4 feet.
.MONDAY...North winds 5 to 10 knots. Waves 2 to 4 feet.
$$
LSZ265-020800-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
1015 PM EDT Wed Jul 1 2026
.Overnight...
Weather.............Mostly cloudy.
Sfc winds...........South 10 to 15 knots.
100-ft winds........South 15 to 20 knots.
Sig waves...........2 to 4 feet.
.THURSDAY...
Weather.............Mostly sunny.
Sfc winds...........Southwest 10 to 15 knots.
100-ft winds........Southwest 15 to 20 knots.
Sig waves...........2 to 4 feet.
.THURSDAY NIGHT...
Weather.............Partly cloudy.
Sfc winds...........Southwest 5 to 10 knots.
100-ft winds........Southwest 10 to 15 knots.
Sig waves...........1 to 3 feet.
.FRIDAY...
Weather.............Partly sunny, then chance of showers in the
afternoon.
Sfc winds...........Northwest 5 to 10 knots becoming northeast in
the afternoon.
100-ft winds........Northwest 10 to 15 knots becoming northeast in
the afternoon.
Sig waves...........2 feet or less.
.FRIDAY NIGHT...
Weather.............Mostly cloudy with chance of showers.
Sfc winds...........Light and variable winds becoming north 5 to 10
knots after midnight.
100-ft winds........Light and variable winds becoming north 10 to
15 knots after midnight.
Sig waves...........2 feet or less.
.FORECAST DAYS 3 THROUGH 5...
.SATURDAY...Slight chance of showers. chance of showers. North
winds 5 to 10 knots. Waves 2 to 4 feet.
.SUNDAY...North winds 5 to 10 knots. Waves 2 to 4 feet.
.MONDAY...North winds 5 to 10 knots. Waves 2 to 4 feet.
$$
LSZ266-020800-
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 Wed Jul 1 2026
.Overnight...
Weather.............Mostly cloudy with a slight chance of showers
and thunderstorms, then mostly cloudy after
midnight.
Sfc winds...........South 10 to 15 knots.
100-ft winds........South 15 to 20 knots.
Sig waves...........2 to 4 feet.
.THURSDAY...
Weather.............Mostly sunny.
Sfc winds...........Southwest 10 to 15 knots.
100-ft winds........Southwest 15 to 20 knots.
Sig waves...........2 to 4 feet.
.THURSDAY NIGHT...
Weather.............Mostly cloudy.
Sfc winds...........Southeast 5 to 10 knots becoming south after
midnight.
100-ft winds........Southeast 10 to 15 knots becoming south after
midnight.
Sig waves...........2 to 4 feet.
.FRIDAY...
Weather.............Partly sunny.
Sfc winds...........Light and variable winds becoming north 5 to 10
knots in the afternoon.
100-ft winds........Light and variable winds becoming north 10 to
15 knots in the afternoon.
Sig waves...........1 to 3 feet.
.FRIDAY NIGHT...
Weather.............Mostly cloudy.
Sfc winds...........North 5 to 10 knots.
100-ft winds........North 10 to 15 knots.
Sig waves...........2 feet or less.
.FORECAST DAYS 3 THROUGH 5...
.SATURDAY...Slight chance of showers. chance of showers. North
winds 5 to 10 knots. Waves 2 to 4 feet.
.SUNDAY...North winds 5 to 10 knots. Waves 2 to 4 feet.
.MONDAY...North winds 5 to 10 knots. Waves 2 to 4 feet.
$$
LSZ267-020800-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
1015 PM EDT Wed Jul 1 2026
.Overnight...
Weather.............Mostly cloudy with a slight chance of showers
and thunderstorms, then mostly cloudy after
midnight.
Sfc winds...........South 10 to 15 knots.
100-ft winds........South 15 to 20 knots.
Sig waves...........2 to 4 feet.
.THURSDAY...
Weather.............Partly sunny.
Sfc winds...........Southwest 5 to 10 knots.
100-ft winds........Southwest 10 to 15 knots.
Sig waves...........2 to 4 feet.
.THURSDAY NIGHT...
Weather.............Mostly cloudy.
Sfc winds...........Light and variable winds.
100-ft winds........Light and variable winds.
Sig waves...........1 to 3 feet.
.FRIDAY...
Weather.............Mostly cloudy.
Sfc winds...........Light and variable winds becoming northwest 5
to 10 knots in the afternoon.
100-ft winds........Light and variable winds becoming northwest 10
to 15 knots in the afternoon.
Sig waves...........1 to 3 feet.
.FRIDAY NIGHT...
Weather.............Mostly cloudy with chance of showers.
Sfc winds...........Northwest 5 to 10 knots.
100-ft winds........Northwest 10 to 15 knots.
Sig waves...........2 feet or less.
.FORECAST DAYS 3 THROUGH 5...
.SATURDAY...Slight chance of showers. chance of showers. North
winds 5 to 10 knots. Waves 2 to 4 feet.
.SUNDAY...North winds 5 to 10 knots. Waves 2 to 4 feet.
.MONDAY...North winds 5 to 10 knots. Waves 2 to 4 feet.
$$
LSZ261-020800-
MAFOR 0203/
Superior West 14510 12520 11510 11520. Waves 1 to 2 feet.
Superior North Central 12510 14520 11520 11620. Waves 1 to 3
feet.
Superior South Central 11410 13510 13610 11510. Waves 2 feet or
less.
Superior East 11410 14510 11500 11600 11500. Waves 1 to 2 feet.
$$
Occasional waves will only be displayed when values meet or exceed 5 feet.
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