FZUS63 KMQT 210915
GLFLS

Experimental Tabular Open Lake Forecast for Lake Superior
National Weather Service Negaunee MI
415 AM EST Tue Jan 21 2025

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 30.8 inch high over the Central Plains will
continue to extend ridging up to 30.5 inches over the west half of
Lake Superior through this morning as it meanders toward Kentucky
for late today. Meanwhile, a 30.3 inch trough will persist over
eastern Lake Superior and a 29.7 inch clipper low develops over
the Canadian Prairie. The low will weaken to around 30 inches by
Wednesday as it passes across Lake Superior. Weak troughing will
persist over the lake into Thursday morning before a 30.2 inch
ridge builds in from the west Thursday night into Friday. Then, a
29.3 inch low over Hudson Bay drags a 29.9 inch trough eastward
over the lake the rest of the weekend.

LSZ162-211715-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
412 AM EST Tue Jan 21 2025 /312 AM CST Tue Jan 21 2025/

, HEAVY FREEZING SPRAY WARNING IN EFFECT THROUGH WEDNESDAY
MORNING,

.EARLY THIS MORNING, West winds 15 to 25 knots. Scattered snow
showers. Waves 3 to 5 feet occasionally to 7 feet.
.TODAY, West winds 20 to 30 knots becoming southwest to 30 knots
with a few gale force gusts to 35 knots possible by mid
afternoon. Heavy freezing spray. Scattered snow showers. Waves
building to 6 to 9 feet occasionally to 11 feet.
.TONIGHT, Southwest winds to 30 knots with a few gale force
gusts to 35 knots possible diminishing to 20 to 30 knots late.
Heavy freezing spray. A chance of snow. Waves building to 7 to
10 feet occasionally to 13 feet, then subsiding to 5 to 8 feet
occasionally to 10 feet.
.WEDNESDAY, Southwest winds 15 to 25 knots veering northwest by
late morning, then veering north by mid afternoon. A chance of
snow showers. Waves subsiding to 1 to 3 feet.
.WEDNESDAY NIGHT, North winds 15 to 25 knots. A slight chance of
snow showers. Waves building to 3 to 5 feet occasionally to
7 feet, then subsiding to 2 to 4 feet.
.THURSDAY, Northwest winds 10 to 20 knots. Waves subsiding to
1 to 3 feet.
.THURSDAY NIGHT, West winds 10 to 20 knots. Waves building to
2 to 4 feet.
.FRIDAY, Southwest winds 15 to 25 knots. A chance of snow
showers. Waves building to 3 to 6 feet occasionally to 8 feet.
.SATURDAY, West winds 20 to 30 knots. Waves building to 4 to
7 feet occasionally to 9 feet, then subsiding to 3 to 5 feet
occasionally to 7 feet.

Note, wave height forecasts are for ice free areas.

LSZ162-211500-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
415 AM EST Tue Jan 21 2025 /315 AM CST Tue Jan 21 2025/

...HEAVY FREEZING SPRAY WARNING IN EFFECT THROUGH WEDNESDAY
MORNING...

.Today...
Weather.............Partly sunny with scattered snow showers, then
                              partly sunny with heavy freezing spray and
                              scattered snow showers in the afternoon.
Sfc winds...........Southwest to 30 knots.
100-ft winds........Southwest gales to 35 knots.
Sig waves...........6 to 9 feet.
Ocnl waves..........Around 12 feet.

.TONIGHT...
Weather.............Mostly cloudy with heavy freezing spray and
                              scattered snow showers, then cloudy with heavy
                              freezing spray with a chance of snow after
                              midnight.
Sfc winds...........Southwest to 30 knots.
100-ft winds........Southwest gales to 35 knots.
Sig waves...........8 to 12 feet.
Ocnl waves..........Around 15 feet.

.WEDNESDAY...
Weather.............Mostly cloudy with chance of snow showers and
                              freezing spray, then partly sunny in the
                              afternoon.
Sfc winds...........Southwest 15 to 20 knots becoming west 10 to 15
                              knots in the afternoon.
100-ft winds........Southwest 20 to 25 knots becoming west 15 to 20
                              knots in the afternoon.
Sig waves...........6 to 9 feet subsiding to 4 to 6 feet in the
                              afternoon.
Ocnl waves..........Around 12 feet subsiding to around 7 feet in
                              the afternoon.

.WEDNESDAY NIGHT...
Weather.............Mostly cloudy.
Sfc winds...........North 20 to 25 knots.
100-ft winds........North to 30 knots.
Sig waves...........4 to 6 feet.
Ocnl waves..........Around 7 feet.


.FORECAST DAYS 3 THROUGH 5...

.THURSDAY...Chance of snow showers. slight chance of snow
showers. North winds 15 to 20 knots. Waves 6 to 9 feet.
.FRIDAY...Chance of snow showers. Southwest winds 15 to 20 knots.
Waves 6 to 9 feet.
.SATURDAY...Breezy. Chance of snow showers. Freezing spray after
midnight. Southwest winds 20 to 25 knots. Waves 8 to 12 feet.

$$

LSZ263-211500-
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 AM EST Tue Jan 21 2025

...HEAVY FREEZING SPRAY WARNING IN EFFECT THROUGH WEDNESDAY
MORNING...

.Today...
Weather.............Snow showers and heavy freezing spray, then
                              heavy freezing spray and numerous snow showers
                              in the afternoon.
Sfc winds...........Southwest to 30 knots.
100-ft winds........Southwest gales to 35 knots.
Sig waves...........8 to 12 feet.
Ocnl waves..........Around 14 feet.

.TONIGHT...
Weather.............Mostly cloudy with heavy freezing spray and
                              scattered snow showers, then mostly cloudy with
                              heavy freezing spray with a chance of snow
                              after midnight.
Sfc winds...........Southwest to 30 knots.
100-ft winds........Southwest gales to 35 knots.
Sig waves...........10 to 14 feet.
Ocnl waves..........Around 16 feet.

.WEDNESDAY...
Weather.............Cloudy with freezing spray with snow likely,
                              then mostly cloudy with chance of snow showers
                              in the afternoon.
Sfc winds...........Southwest 20 to 25 knots.
100-ft winds........Southwest to 30 knots.
Sig waves...........6 to 9 feet.
Ocnl waves..........Around 12 feet.

.WEDNESDAY NIGHT...
Weather.............Mostly cloudy with chance of snow showers.
Sfc winds...........North 20 to 25 knots.
100-ft winds........North to 30 knots.
Sig waves...........5 to 7 feet.
Ocnl waves..........Around 9 feet.


.FORECAST DAYS 3 THROUGH 5...

.THURSDAY...Chance of snow showers. slight chance of snow
showers. North winds 15 to 20 knots. Waves 6 to 9 feet.
.FRIDAY...Chance of snow showers. Southwest winds 15 to 20 knots.
Waves 6 to 9 feet.
.SATURDAY...Breezy. Chance of snow showers. Freezing spray after
midnight. Southwest winds 20 to 25 knots. Waves 8 to 12 feet.

$$

LSZ264-211500-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
415 AM EST Tue Jan 21 2025

...HEAVY FREEZING SPRAY WARNING IN EFFECT THROUGH WEDNESDAY
MORNING...

.Today...
Weather.............Numerous snow showers, then snow showers and
                              heavy freezing spray in the afternoon.
Sfc winds...........West 20 to 25 knots.
100-ft winds........West to 30 knots.
Sig waves...........8 to 12 feet.
Ocnl waves..........Around 14 feet.

.TONIGHT...
Weather.............Heavy freezing spray and numerous snow showers,
                              then mostly cloudy with freezing spray with a
                              chance of snow after midnight.
Sfc winds...........Southwest to 30 knots.
100-ft winds........Southwest gales to 35 knots.
Sig waves...........10 to 14 feet.
Ocnl waves..........Around 16 feet.

.WEDNESDAY...
Weather.............Cloudy with freezing spray with snow likely,
                              then mostly cloudy with chance of snow showers
                              in the afternoon.
Sfc winds...........Southwest 20 to 25 knots.
100-ft winds........Southwest to 30 knots.
Sig waves...........6 to 9 feet.
Ocnl waves..........Around 12 feet.

.WEDNESDAY NIGHT...
Weather.............Mostly cloudy with chance of snow showers and
                              freezing spray.
Sfc winds...........North to 30 knots.
100-ft winds........North gales to 35 knots.
Sig waves...........6 to 9 feet.
Ocnl waves..........Around 12 feet.


.FORECAST DAYS 3 THROUGH 5...

.THURSDAY...Chance of snow showers. slight chance of snow
showers. North winds 15 to 20 knots. Waves 6 to 9 feet.
.FRIDAY...Chance of snow showers. Southwest winds 15 to 20 knots.
Waves 6 to 9 feet.
.SATURDAY...Breezy. Chance of snow showers. Freezing spray after
midnight. Southwest winds 20 to 25 knots. Waves 8 to 12 feet.

$$

LSZ265-211500-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
415 AM EST Tue Jan 21 2025

...HEAVY FREEZING SPRAY WARNING IN EFFECT THROUGH WEDNESDAY
MORNING...

.Today...
Weather.............Partly sunny with heavy freezing spray and
                              scattered snow showers, then mostly sunny with
                              heavy freezing spray and isolated snow showers
                              in the afternoon.
Sfc winds...........West to 30 knots.
100-ft winds........West gales to 35 knots.
Sig waves...........6 to 9 feet.
Ocnl waves..........Around 12 feet.

.TONIGHT...
Weather.............Partly cloudy, then mostly cloudy with heavy
                              freezing spray with a chance of snow after
                              midnight.
Sfc winds...........Southwest 20 to 25 knots.
100-ft winds........Southwest to 30 knots.
Sig waves...........5 to 7 feet.
Ocnl waves..........Around 9 feet.

.WEDNESDAY...
Weather.............Mostly cloudy with chance of snow showers, then
                              mostly cloudy in the afternoon.
Sfc winds...........Southwest 15 to 20 knots.
100-ft winds........Southwest 20 to 25 knots.
Sig waves...........4 to 6 feet.
Ocnl waves..........Around 7 feet.

.WEDNESDAY NIGHT...
Weather.............Mostly cloudy with chance of snow showers.
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.


.FORECAST DAYS 3 THROUGH 5...

.THURSDAY...Chance of snow showers. slight chance of snow
showers. North winds 15 to 20 knots. Waves 6 to 9 feet.
.FRIDAY...Chance of snow showers. Southwest winds 15 to 20 knots.
Waves 6 to 9 feet.
.SATURDAY...Breezy. Chance of snow showers. Freezing spray after
midnight. Southwest winds 20 to 25 knots. Waves 8 to 12 feet.

$$

LSZ266-211500-
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 AM EST Tue Jan 21 2025

...HEAVY FREEZING SPRAY WARNING IN EFFECT THROUGH WEDNESDAY
MORNING...

.Today...
Weather.............Snow showers and heavy freezing spray, then
                              partly sunny with heavy freezing spray and
                              scattered snow showers in the afternoon.
Sfc winds...........West 20 to 25 knots.
100-ft winds........West to 30 knots.
Sig waves...........8 to 12 feet.
Ocnl waves..........Around 14 feet.

.TONIGHT...
Weather.............Mostly cloudy with heavy freezing spray with a
                              chance of snow.
Sfc winds...........Southwest to 30 knots.
100-ft winds........Southwest gales to 35 knots.
Sig waves...........8 to 12 feet.
Ocnl waves..........Around 15 feet.

.WEDNESDAY...
Weather.............Cloudy with heavy freezing spray with a chance
                              of snow showers, then mostly cloudy with chance
                              of snow showers in the afternoon.
Sfc winds...........South 20 to 25 knots becoming southwest 10 to
                              15 knots in the afternoon.
100-ft winds........South to 30 knots becoming southwest 15 to 20
                              knots in the afternoon.
Sig waves...........6 to 9 feet.
Ocnl waves..........Around 12 feet.

.WEDNESDAY NIGHT...
Weather.............Mostly cloudy with chance of snow showers, then
                              mostly cloudy with freezing spray with a chance
                              of snow showers after midnight.
Sfc winds...........Southwest 15 to 20 knots becoming north 20 to
                              25 knots after midnight.
100-ft winds........Southwest 20 to 25 knots becoming north to 30
                              knots after midnight.
Sig waves...........6 to 9 feet.
Ocnl waves..........Around 12 feet.


.FORECAST DAYS 3 THROUGH 5...

.THURSDAY...Chance of snow showers. slight chance of snow
showers. North winds 15 to 20 knots. Waves 6 to 9 feet.
.FRIDAY...Chance of snow showers. Southwest winds 15 to 20 knots.
Waves 6 to 9 feet.
.SATURDAY...Breezy. Chance of snow showers. Freezing spray after
midnight. Southwest winds 20 to 25 knots. Waves 8 to 12 feet.

$$

LSZ267-211500-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
415 AM EST Tue Jan 21 2025

...HEAVY FREEZING SPRAY WARNING IN EFFECT THROUGH WEDNESDAY
MORNING...

.Today...
Weather.............Snow showers and freezing spray, then heavy
                              freezing spray and numerous snow showers in the
                              afternoon.
Sfc winds...........West 20 to 25 knots becoming southwest to 30
                              knots in the afternoon.
100-ft winds........West to 30 knots becoming southwest gales to 35
                              knots in the afternoon.
Sig waves...........8 to 12 feet.
Ocnl waves..........Around 13 feet.

.TONIGHT...
Weather.............Partly cloudy with heavy freezing spray and
                              scattered snow showers, then mostly cloudy with
                              heavy freezing spray and slight chance of snow
                              after midnight.
Sfc winds...........Southwest to 30 knots.
100-ft winds........Southwest gales to 35 knots.
Sig waves...........8 to 12 feet.
Ocnl waves..........Around 13 feet.

.WEDNESDAY...
Weather.............Heavy freezing spray with snow showers likely,
                              then cloudy with chance of snow showers in the
                              afternoon.
Sfc winds...........South 20 to 25 knots.
100-ft winds........South to 30 knots.
Sig waves...........6 to 9 feet.
Ocnl waves..........Around 11 feet.

.WEDNESDAY NIGHT...
Weather.............Mostly cloudy with chance of snow showers.
Sfc winds...........Southwest 15 to 20 knots becoming northwest
                              after midnight.
100-ft winds........Southwest 20 to 25 knots becoming northwest
                              after midnight.
Sig waves...........4 to 6 feet.
Ocnl waves..........Around 7 feet.


.FORECAST DAYS 3 THROUGH 5...

.THURSDAY...Chance of snow showers. slight chance of snow
showers. North winds 15 to 20 knots. Waves 6 to 9 feet.
.FRIDAY...Chance of snow showers. Southwest winds 15 to 20 knots.
Waves 6 to 9 feet.
.SATURDAY...Breezy. Chance of snow showers. Freezing spray after
midnight. Southwest winds 20 to 25 knots. Waves 8 to 12 feet.

$$

LSZ261-211500-
MAFOR 2110/
Superior West 12647 11652 19657 12552 19557 12552 11557. Waves 3
to 6 feet building to 6 to 9 feet today. Waves 5 to 9 feet
tonight.

Superior North Central 12637 11647 11657 12557 11552 11540. Waves
3 to 6 feet building to 8 to 11 feet today. Waves 7 to 11 feet
subsiding to 6 to 9 feet tonight.

Superior South Central 11657 12642 19647 11542 11540 12530 11540.
A chance of snow overnight. Waves 5 to 8 feet today. Waves 3 to 6
feet tonight.

Superior East 11737 11637 12647 11547 13542. Waves 6 to 9 feet.

$$

Occasional waves will only be displayed when values meet or exceed 5 feet.

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