FZUS63 KMQT 210215
GLFLS
Experimental Tabular Open Lake Forecast for Lake Superior
National Weather Service Negaunee MI
1015 PM EDT Fri Sep 20 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 29.7 inch trough is moving across Lake Superior
tonight as a deeper parent low heads towards Hudson Bay. This
trough will dissipate early Saturday, allowing weak 29.9 inch
ridging to anchor over the Upper Great Lakes on Saturday morning.
A new low pressure of 29.6 inches over southern Manitoba Saturday
morning will then track across far northern Ontario Saturday
afternoon and night. Its associated 29.9 inch trough will sweep
across Lake Superior during Saturday night and Sunday morning. In
its wake, 30.1 inch high pressure will build from the Northern
Plains into northern Ontario during Sunday and Monday. Also on
Monday, a 29.7 inch low pressure will track northeast to southern
Wisconsin. 30.0 inch high pressure builds over the Lower MS Valley
Tuesday, building to 30.1 inches Wednesday.
LSZ162-211000-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
947 PM EDT Fri Sep 20 2024 /847 PM CDT Fri Sep 20 2024/
.REST OF TONIGHT, Southwest winds 5 to 15 knots. Waves calm to
2 feet.
.SATURDAY, South winds 5 to 15 knots backing southeast in the
afternoon, then veering west late. A chance of showers. A slight
chance of thunderstorms by mid afternoon. Waves calm to 2 feet.
.SATURDAY NIGHT, Northwest winds 10 to 20 knots increasing to
15 to 25 knots after midnight. A slight chance of showers and
thunderstorms through midnight. Waves building to 3 to 5 feet
occasionally to 7 feet, then subsiding to 2 to 4 feet.
.SUNDAY, Northwest winds 15 to 25 knots diminishing to 10 to
20 knots by mid afternoon. Waves subsiding to calm to 2 feet.
.SUNDAY NIGHT, Northwest winds 10 to 20 knots veering north
after midnight. Waves calm to 2 feet.
.MONDAY, North winds 10 to 20 knots veering south by mid
afternoon. Waves calm to 2 feet.
.MONDAY NIGHT, East winds 5 to 15 knots veering south after
midnight. Waves calm to 2 feet.
.TUESDAY, Southwest winds 5 to 15 knots veering west. Waves calm
to 2 feet.
.WEDNESDAY, West winds 5 to 15 knots veering northwest. Waves
calm to 2 feet.
LSZ162-210800-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
1015 PM EDT Fri Sep 20 2024 /915 PM CDT Fri Sep 20 2024/
.Overnight...
Weather.............Mostly clear.
Sfc winds...........Southwest 5 to 10 knots.
100-ft winds........Southwest 10 to 15 knots.
Sig waves...........2 to 4 feet.
.SATURDAY...
Weather.............Mostly sunny, then chance of showers and slight
chance of thunderstorms in the afternoon.
Sfc winds...........South 5 to 10 knots becoming northeast in the
afternoon.
100-ft winds........South 10 to 15 knots becoming northeast in the
afternoon.
Sig waves...........1 to 3 feet.
.SATURDAY NIGHT...
Weather.............Mostly cloudy with chance of showers, then
partly cloudy after midnight.
Sfc winds...........West 10 to 15 knots becoming northwest 15 to 20
knots after midnight.
100-ft winds........West 15 to 20 knots becoming northwest 20 to 25
knots after midnight.
Sig waves...........3 to 5 feet.
Ocnl waves..........Around 6 feet.
.SUNDAY...
Weather.............Mostly sunny.
Sfc winds...........Northwest 15 to 20 knots.
100-ft winds........Northwest 20 to 25 knots.
Sig waves...........3 to 5 feet.
Ocnl waves..........Around 6 feet.
.SUNDAY NIGHT...
Weather.............Mostly clear.
Sfc winds...........Northwest 10 to 15 knots.
100-ft winds........Northwest 15 to 20 knots.
Sig waves...........2 to 4 feet.
.FORECAST DAYS 3 THROUGH 5...
.MONDAY...North winds 10 to 15 knots. Waves 4 to 6 feet.
.TUESDAY...North winds 5 to 10 knots. Waves 2 to 4 feet.
.WEDNESDAY...North winds 5 to 10 knots. Waves 2 to 4 feet.
$$
LSZ263-210800-
Lake Superior from Saxon Harbor WI to Upper Entrance to Portage
Canal MI 5NM off shore to the US/Canadian border including Isle
Royale National Park-
1015 PM EDT Fri Sep 20 2024
.Overnight...
Weather.............Mostly clear.
Sfc winds...........Southwest 10 to 15 knots.
100-ft winds........Southwest 15 to 20 knots.
Sig waves...........2 to 4 feet.
Ocnl waves..........Around 5 feet.
.SATURDAY...
Weather.............Mostly sunny, then chance of showers in the
afternoon.
Sfc winds...........Southwest 5 to 10 knots becoming southeast in
the afternoon.
100-ft winds........Southwest 10 to 15 knots becoming southeast in
the afternoon.
Sig waves...........2 to 4 feet.
.SATURDAY NIGHT...
Weather.............Mostly cloudy with chance of showers, then
mostly cloudy after midnight.
Sfc winds...........Southeast 10 to 15 knots increasing to
northwest 20 to 25 knots after midnight.
100-ft winds........Southeast 15 to 20 knots increasing to
northwest to 30 knots after midnight.
Sig waves...........4 to 6 feet.
Ocnl waves..........Around 7 feet.
.SUNDAY...
Weather.............Mostly sunny.
Sfc winds...........Northwest 15 to 20 knots.
100-ft winds........Northwest 20 to 25 knots.
Sig waves...........4 to 6 feet.
Ocnl waves..........Around 7 feet.
.SUNDAY NIGHT...
Weather.............Mostly clear.
Sfc winds...........West 10 to 15 knots becoming northwest after
midnight.
100-ft winds........West 15 to 20 knots becoming northwest after
midnight.
Sig waves...........2 to 4 feet.
.FORECAST DAYS 3 THROUGH 5...
.MONDAY...North winds 10 to 15 knots. Waves 4 to 6 feet.
.TUESDAY...North winds 5 to 10 knots. Waves 2 to 4 feet.
.WEDNESDAY...North winds 5 to 10 knots. Waves 2 to 4 feet.
$$
LSZ264-210800-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
1015 PM EDT Fri Sep 20 2024
.Overnight...
Weather.............Partly cloudy.
Sfc winds...........South 10 to 15 knots becoming west 5 to 10
knots after midnight.
100-ft winds........South 15 to 20 knots becoming west 10 to 15
knots after midnight.
Sig waves...........3 to 5 feet.
Ocnl waves..........Around 6 feet.
.SATURDAY...
Weather.............Mostly sunny, then slight chance of showers in
the afternoon.
Sfc winds...........South 5 to 10 knots.
100-ft winds........South 10 to 15 knots.
Sig waves...........2 to 4 feet.
.SATURDAY NIGHT...
Weather.............Mostly cloudy with chance of showers, then
mostly cloudy after midnight.
Sfc winds...........Southeast 15 to 20 knots becoming southwest 20
to 25 knots after midnight.
100-ft winds........Southeast 20 to 25 knots becoming southwest to
30 knots after midnight.
Sig waves...........4 to 6 feet.
Ocnl waves..........Around 7 feet.
.SUNDAY...
Weather.............Mostly sunny.
Sfc winds...........Northwest 20 to 25 knots decreasing to 10 to 15
knots in the afternoon.
100-ft winds........Northwest to 30 knots decreasing to 15 to 20
knots in the afternoon.
Sig waves...........4 to 6 feet.
Ocnl waves..........Around 8 feet.
.SUNDAY NIGHT...
Weather.............Partly cloudy.
Sfc winds...........Northwest 10 to 15 knots.
100-ft winds........Northwest 15 to 20 knots.
Sig waves...........2 to 4 feet.
Ocnl waves..........Around 5 feet in the evening.
.FORECAST DAYS 3 THROUGH 5...
.MONDAY...North winds 10 to 15 knots. Waves 4 to 6 feet.
.TUESDAY...North winds 5 to 10 knots. Waves 2 to 4 feet.
.WEDNESDAY...North winds 5 to 10 knots. Waves 2 to 4 feet.
$$
LSZ265-210800-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
1015 PM EDT Fri Sep 20 2024
.Overnight...
Weather.............Mostly clear.
Sfc winds...........Southwest 5 to 10 knots.
100-ft winds........Southwest 10 to 15 knots.
Sig waves...........1 to 3 feet.
.SATURDAY...
Weather.............Sunny.
Sfc winds...........Southwest 5 to 10 knots becoming southeast 10
to 15 knots in the afternoon.
100-ft winds........Southwest 10 to 15 knots becoming southeast 15
to 20 knots in the afternoon.
Sig waves...........2 to 4 feet.
.SATURDAY NIGHT...
Weather.............Mostly cloudy with chance of showers.
Sfc winds...........Southeast 15 to 20 knots becoming southwest
after midnight.
100-ft winds........Southeast 20 to 25 knots becoming southwest
after midnight.
Sig waves...........3 to 5 feet.
Ocnl waves..........Around 6 feet.
.SUNDAY...
Weather.............Mostly cloudy with chance of showers, then
partly sunny in the afternoon.
Sfc winds...........Northwest 20 to 25 knots.
100-ft winds........Northwest to 30 knots.
Sig waves...........4 to 6 feet.
Ocnl waves..........Around 8 feet.
.SUNDAY NIGHT...
Weather.............Partly cloudy.
Sfc winds...........Northwest 10 to 15 knots.
100-ft winds........Northwest 15 to 20 knots.
Sig waves...........3 to 5 feet subsiding to 2 to 4 feet after
midnight.
Ocnl waves..........Around 5 feet in the evening.
.FORECAST DAYS 3 THROUGH 5...
.MONDAY...North winds 10 to 15 knots. Waves 4 to 6 feet.
.TUESDAY...North winds 5 to 10 knots. Waves 2 to 4 feet.
.WEDNESDAY...North winds 5 to 10 knots. Waves 2 to 4 feet.
$$
LSZ266-210800-
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 Sep 20 2024
.Overnight...
Weather.............Partly cloudy, then patchy fog after midnight.
Sfc winds...........North 5 to 10 knots becoming south after
midnight.
100-ft winds........North 10 to 15 knots becoming south after
midnight.
Sig waves...........2 to 4 feet.
Ocnl waves..........Around 5 feet.
.SATURDAY...
Weather.............Sunny with patchy fog, then mostly sunny in the
afternoon.
Sfc winds...........Southwest 5 to 10 knots becoming southeast in
the afternoon.
100-ft winds........Southwest 10 to 15 knots becoming southeast in
the afternoon.
Sig waves...........2 to 4 feet.
.SATURDAY NIGHT...
Weather.............Partly cloudy with chance of showers, then
mostly cloudy with chance of showers and
thunderstorms after midnight.
Sfc winds...........Southeast 15 to 20 knots becoming south after
midnight.
100-ft winds........Southeast 20 to 25 knots becoming south after
midnight.
Sig waves...........4 to 6 feet.
Ocnl waves..........Around 7 feet.
.SUNDAY...
Weather.............Mostly cloudy with chance of showers, then
partly sunny with chance of showers in the
afternoon.
Sfc winds...........Northwest 20 to 25 knots.
100-ft winds........Northwest to 30 knots.
Sig waves...........6 to 9 feet.
Ocnl waves..........Around 10 feet.
.SUNDAY NIGHT...
Weather.............Partly cloudy.
Sfc winds...........Northwest 15 to 20 knots.
100-ft winds........Northwest 20 to 25 knots.
Sig waves...........4 to 6 feet.
Ocnl waves..........Around 8 feet.
.FORECAST DAYS 3 THROUGH 5...
.MONDAY...North winds 10 to 15 knots. Waves 4 to 6 feet.
.TUESDAY...North winds 5 to 10 knots. Waves 2 to 4 feet.
.WEDNESDAY...North winds 5 to 10 knots. Waves 2 to 4 feet.
$$
LSZ267-210800-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
1015 PM EDT Fri Sep 20 2024
.Overnight...
Weather.............Mostly cloudy with a slight chance of showers
and thunderstorms, then mostly cloudy with
patchy fog after midnight.
Sfc winds...........South 5 to 10 knots.
100-ft winds........South 10 to 15 knots.
Sig waves...........2 to 4 feet.
.SATURDAY...
Weather.............Mostly sunny with areas of dense fog, then
sunny in the afternoon.
Sfc winds...........South 5 to 10 knots.
100-ft winds........South 10 to 15 knots.
Sig waves...........1 to 3 feet.
.SATURDAY NIGHT...
Weather.............Partly cloudy, then mostly cloudy with chance
of showers after midnight.
Sfc winds...........Southeast 10 to 15 knots.
100-ft winds........Southeast 15 to 20 knots.
Sig waves...........2 to 4 feet.
.SUNDAY...
Weather.............Mostly cloudy with chance of showers, then
showers likely in the afternoon.
Sfc winds...........Northwest 20 to 25 knots.
100-ft winds........Northwest to 30 knots.
Sig waves...........6 to 9 feet.
Ocnl waves..........Around 10 feet.
.SUNDAY NIGHT...
Weather.............Mostly cloudy with chance of showers.
Sfc winds...........Northwest 20 to 25 knots.
100-ft winds........Northwest to 30 knots.
Sig waves...........5 to 7 feet.
Ocnl waves..........Around 9 feet.
.FORECAST DAYS 3 THROUGH 5...
.MONDAY...North winds 10 to 15 knots. Waves 4 to 6 feet.
.TUESDAY...North winds 5 to 10 knots. Waves 2 to 4 feet.
.WEDNESDAY...North winds 5 to 10 knots. Waves 2 to 4 feet.
$$
LSZ261-210800-
MAFOR 2103/
Superior West 11510 13500 11300 11310 11510 11720. A chance of
showers and thunderstorms Saturday afternoon and Saturday
evening. Waves 2 feet or less.
Superior North Central 11510 11600 11500 12400 12310 11420. A
chance of showers Saturday evening. Waves 2 to 4 feet overnight.
Waves 1 to 3 feet Saturday and Saturday evening.
Superior South Central 14500 11400 11310 11320 11420. A chance of
showers Saturday evening. Waves 2 feet or less overnight and
Saturday. Waves 2 to 3 feet Saturday evening.
Superior East 12500 11504 11400 11500 11400 12310. A chance of
showers Saturday evening. Waves 2 feet or less.
$$
Occasional waves will only be displayed when values meet or exceed 5 feet.
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