Back-to-back powerful Pacific storm systems to impact the Pacific Northwest and northern California through the end of this week with heavy rain, flooding, strong winds, and higher elevation mountain snow. A strong, long-duration atmospheric river will accompany the Pacific storms, bringing excessive rainfall and flash flooding to southwest Oregon and northwest California through the week. Read More >
FZUS63 KMQT 210315
GLFLS
Experimental Tabular Open Lake Forecast for Lake Superior
National Weather Service Negaunee MI
1015 PM EST Wed Nov 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 29.4 inch low is over the St Marys River tonight.
As this low spins over the Great Lakes region, it briefly deepens
to 29.3 inches Thursday before phasing with a deepening low of
near 29.2 inches over New England on Friday. Meanwhile, broad high
pressure over the western CONUS will extend 30.1 inch ridging
over western Lake Superior Friday into Saturday before high
pressure weakens as it shifts to the Southeast U.S. on Saturday.
Sunday, Lake Superior will be between high pressures of 30.1
inches over the Southeast and Canadian Prairie respectively, a low
pressure of 29.1 inches over the Canadian Maritimes, and a
developing 29.6 inch low over the Southern Plains. Monday, the
Southern Plains low will arrive in the Great Lakes at around 29.7
inches.
LSZ162-211030-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
930 PM EST Wed Nov 20 2024 /830 PM CST Wed Nov 20 2024/
, GALE WARNING IN EFFECT FROM 5 AM EST /4 AM CST/ THURSDAY
THROUGH THURSDAY AFTERNOON,
.REST OF TONIGHT, Northwest winds 10 to 20 knots becoming north
15 to 25 knots by midnight, then increasing to gales to 35 knots
late. A slight chance of snow showers late in the evening. A
slight chance of rain showers. Waves calm to 2 feet building to
5 to 8 feet occasionally to 10 feet.
.THURSDAY, North gales to 40 knots. A slight chance of rain
showers in the morning. Waves building to 6 to 9 feet
occasionally to 11 feet, then subsiding to 4 to 7 feet
occasionally to 9 feet.
.THURSDAY NIGHT, North winds 20 to 30 knots diminishing to 15 to
25 knots late. A slight chance of rain showers. Waves subsiding
to 1 to 3 feet.
.FRIDAY, Northwest winds 15 to 25 knots. A slight chance of rain
showers. Waves 1 to 3 feet.
.FRIDAY NIGHT, Northwest winds 15 to 25 knots diminishing to
10 to 20 knots after midnight. Waves subsiding to calm to 2 feet.
.SATURDAY, Northwest winds 10 to 20 knots. Waves calm to 2 feet.
.SATURDAY NIGHT, North winds 5 to 15 knots veering east after
midnight. Waves calm to 2 feet.
.SUNDAY, East winds 10 to 20 knots. A chance of rain and snow
showers. Waves calm to 2 feet.
.MONDAY, Northwest winds 15 to 25 knots. A chance of rain
showers. Waves building to 2 to 4 feet, then subsiding to 1 to
3 feet.
LSZ162-210900-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
1015 PM EST Wed Nov 20 2024 /915 PM CST Wed Nov 20 2024/
...GALE WARNING IN EFFECT FROM 5 AM EST /4 AM CST/ THURSDAY
THROUGH THURSDAY AFTERNOON...
.Overnight...
Weather.............Mostly cloudy with a slight chance of rain and
snow showers, then mostly cloudy with a slight
chance of showers after midnight.
Sfc winds...........Northwest 10 to 15 knots increasing to 20 to 25
knots after midnight.
100-ft winds........Northwest 15 to 20 knots increasing to 30 knots
after midnight.
Sig waves...........2 to 4 feet building to 6 to 9 feet after
midnight.
Ocnl waves..........Around 10 feet after midnight.
.THURSDAY...
Weather.............Partly sunny with a slight chance of showers,
then mostly cloudy in the afternoon.
Sfc winds...........Northwest to 30 knots.
100-ft winds........Northwest gales to 35 knots.
Sig waves...........8 to 12 feet.
Ocnl waves..........Around 13 feet.
.THURSDAY NIGHT...
Weather.............Mostly cloudy.
Sfc winds...........North 15 to 20 knots.
100-ft winds........North 20 to 25 knots.
Sig waves...........5 to 7 feet.
Ocnl waves..........Around 9 feet.
.FRIDAY...
Weather.............Partly sunny.
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 morning.
.FRIDAY NIGHT...
Weather.............Mostly cloudy.
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...
.SATURDAY...Chance of showers. chance of snow showers in the
evening. Northwest winds 10 to 15 knots. Waves 5 to 7 feet.
.SUNDAY...Chance of snow showers in the morning. chance of
showers. South winds 10 to 15 knots. Waves 3 to 5 feet.
.MONDAY...Chance of showers. chance of snow showers after
midnight. North winds 15 to 20 knots. Waves 4 to 6 feet.
$$
LSZ263-210900-
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 EST Wed Nov 20 2024
...GALE WARNING IN EFFECT FROM 5 AM EST THURSDAY THROUGH THURSDAY
AFTERNOON...
.Overnight...
Weather.............Cloudy with chance of showers, then mostly
cloudy with a slight chance of showers after
midnight.
Sfc winds...........Northwest 10 to 15 knots increasing to 20 to 25
knots after midnight.
100-ft winds........Northwest 15 to 20 knots increasing to 30 knots
after midnight.
Sig waves...........2 to 4 feet building to 8 to 12 feet after
midnight.
Ocnl waves..........Around 13 feet after midnight.
.THURSDAY...
Weather.............Mostly cloudy with chance of showers, then
cloudy with a slight chance of showers in the
afternoon.
Sfc winds...........North gales to 35 knots decreasing to 30 knots
in the afternoon.
100-ft winds........North gales to 45 knots decreasing to 35 knots
in the afternoon.
Sig waves...........10 to 14 feet.
Ocnl waves..........Around 18 feet.
.THURSDAY NIGHT...
Weather.............Cloudy.
Sfc winds...........North 20 to 25 knots.
100-ft winds........North to 30 knots.
Sig waves...........6 to 9 feet.
Ocnl waves..........Around 12 feet.
.FRIDAY...
Weather.............Mostly cloudy.
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.
.FRIDAY NIGHT...
Weather.............Mostly cloudy.
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.
.FORECAST DAYS 3 THROUGH 5...
.SATURDAY...Chance of showers. chance of snow showers in the
evening. Northwest winds 10 to 15 knots. Waves 5 to 7 feet.
.SUNDAY...Chance of snow showers in the morning. chance of
showers. South winds 10 to 15 knots. Waves 3 to 5 feet.
.MONDAY...Chance of showers. chance of snow showers after
midnight. North winds 15 to 20 knots. Waves 4 to 6 feet.
$$
LSZ264-210900-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
1015 PM EST Wed Nov 20 2024
...GALE WARNING IN EFFECT FROM 2 AM EST THURSDAY THROUGH THURSDAY
AFTERNOON...
.Overnight...
Weather.............Cloudy with chance of showers.
Sfc winds...........Northwest 15 to 20 knots increasing to north to
30 knots after midnight.
100-ft winds........Northwest 20 to 25 knots increasing to north
gales to 35 knots after midnight.
Sig waves...........3 to 5 feet building to 8 to 12 feet after
midnight.
Ocnl waves..........Around 7 feet building to around 15 feet after
midnight.
.THURSDAY...
Weather.............Cloudy with chance of showers, then cloudy with
a slight chance of showers in the afternoon.
Sfc winds...........North gales to 35 knots decreasing to 30 knots
in the afternoon.
100-ft winds........North gales to 45 knots decreasing to 35 knots
in the afternoon.
Sig waves...........12 to 16 feet.
Ocnl waves..........Around 19 feet.
.THURSDAY NIGHT...
Weather.............Cloudy.
Sfc winds...........North 20 to 25 knots.
100-ft winds........North to 30 knots.
Sig waves...........6 to 9 feet.
Ocnl waves..........Around 12 feet.
.FRIDAY...
Weather.............Mostly cloudy.
Sfc winds...........North 15 to 20 knots.
100-ft winds........North 20 to 25 knots.
Sig waves...........4 to 6 feet.
Ocnl waves..........Around 8 feet.
.FRIDAY NIGHT...
Weather.............Mostly 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...
.SATURDAY...Chance of showers. chance of snow showers in the
evening. Northwest winds 10 to 15 knots. Waves 5 to 7 feet.
.SUNDAY...Chance of snow showers in the morning. chance of
showers. South winds 10 to 15 knots. Waves 3 to 5 feet.
.MONDAY...Chance of showers. chance of snow showers after
midnight. North winds 15 to 20 knots. Waves 4 to 6 feet.
$$
LSZ265-210900-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
1015 PM EST Wed Nov 20 2024
...GALE WARNING IN EFFECT THROUGH THURSDAY AFTERNOON...
.Overnight...
Weather.............Showers, then showers likely after midnight.
Sfc winds...........Northwest 20 to 25 knots increasing to 35 knot
gales after midnight.
100-ft winds........Northwest to 30 knots increasing to 45 knot
gales after midnight.
Sig waves...........4 to 6 feet building to 12 to 16 feet after
midnight.
Ocnl waves..........Around 7 feet building to around 19 feet after
midnight.
.THURSDAY...
Weather.............Showers, then showers likely in the afternoon.
Sfc winds...........North gales to 35 knots decreasing to 30 knots
in the afternoon.
100-ft winds........North gales to 45 knots decreasing to 35 knots
in the afternoon.
Sig waves...........12 to 16 feet.
Ocnl waves..........Around 21 feet.
.THURSDAY NIGHT...
Weather.............Cloudy with chance of showers, then cloudy with
showers likely after midnight.
Sfc winds...........North 20 to 25 knots.
100-ft winds........North to 30 knots.
Sig waves...........8 to 12 feet.
Ocnl waves..........Around 13 feet.
.FRIDAY...
Weather.............Showers likely, then mostly cloudy with chance
of showers in the afternoon.
Sfc winds...........North 20 to 25 knots.
100-ft winds........North to 30 knots.
Sig waves...........6 to 9 feet.
Ocnl waves..........Around 10 feet.
.FRIDAY NIGHT...
Weather.............Showers likely, then cloudy with chance of
showers after midnight.
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...
.SATURDAY...Chance of showers. chance of snow showers in the
evening. Northwest winds 10 to 15 knots. Waves 5 to 7 feet.
.SUNDAY...Chance of snow showers in the morning. chance of
showers. South winds 10 to 15 knots. Waves 3 to 5 feet.
.MONDAY...Chance of showers. chance of snow showers after
midnight. North winds 15 to 20 knots. Waves 4 to 6 feet.
$$
LSZ266-210900-
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 EST Wed Nov 20 2024
...GALE WARNING IN EFFECT THROUGH THURSDAY AFTERNOON...
.Overnight...
Weather.............Showers.
Sfc winds...........Northwest to 30 knots increasing to 35 knot
gales after midnight.
100-ft winds........Northwest gales to 35 knots increasing to 45
knots after midnight.
Sig waves...........6 to 9 feet building to 12 to 16 feet after
midnight.
Ocnl waves..........Around 10 feet building to around 19 feet after
midnight.
.THURSDAY...
Weather.............Showers, then cloudy with chance of showers in
the afternoon.
Sfc winds...........North gales to 35 knots becoming northeast to
30 knots in the afternoon.
100-ft winds........North gales to 45 knots becoming northeast at
35 knots in the afternoon.
Sig waves...........12 to 16 feet.
Ocnl waves..........Around 21 feet.
.THURSDAY NIGHT...
Weather.............Cloudy with chance of showers.
Sfc winds...........North 20 to 25 knots.
100-ft winds........North to 30 knots.
Sig waves...........8 to 12 feet.
Ocnl waves..........Around 13 feet.
.FRIDAY...
Weather.............Showers, then showers likely in the afternoon.
Sfc winds...........North 20 to 25 knots.
100-ft winds........North to 30 knots.
Sig waves...........6 to 9 feet.
Ocnl waves..........Around 11 feet.
.FRIDAY NIGHT...
Weather.............Showers likely.
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...
.SATURDAY...Chance of showers. chance of snow showers in the
evening. Northwest winds 10 to 15 knots. Waves 5 to 7 feet.
.SUNDAY...Chance of snow showers in the morning. chance of
showers. South winds 10 to 15 knots. Waves 3 to 5 feet.
.MONDAY...Chance of showers. chance of snow showers after
midnight. North winds 15 to 20 knots. Waves 4 to 6 feet.
$$
LSZ267-210900-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
1015 PM EST Wed Nov 20 2024
...GALE WARNING IN EFFECT FROM 5 AM TO 10 AM EST THURSDAY...
.Overnight...
Weather.............Showers.
Sfc winds...........Northwest to 30 knots.
100-ft winds........Northwest gales to 35 knots.
Sig waves...........6 to 9 feet.
Ocnl waves..........Around 12 feet.
.THURSDAY...
Weather.............Showers, then mostly cloudy with a slight
chance of showers in the afternoon.
Sfc winds...........Northeast to 30 knots.
100-ft winds........Northeast gales to 35 knots.
Sig waves...........10 to 14 feet.
Ocnl waves..........Around 16 feet.
.THURSDAY NIGHT...
Weather.............Cloudy with chance of showers.
Sfc winds...........North 20 to 25 knots.
100-ft winds........North to 30 knots.
Sig waves...........5 to 7 feet.
Ocnl waves..........Around 8 feet.
.FRIDAY...
Weather.............Showers, then showers likely in the afternoon.
Sfc winds...........North 20 to 25 knots.
100-ft winds........North to 30 knots.
Sig waves...........5 to 7 feet.
Ocnl waves..........Around 9 feet.
.FRIDAY NIGHT...
Weather.............Showers likely.
Sfc winds...........Northwest 20 to 25 knots.
100-ft winds........Northwest to 30 knots.
Sig waves...........5 to 7 feet.
Ocnl waves..........Around 9 feet.
.FORECAST DAYS 3 THROUGH 5...
.SATURDAY...Chance of showers. chance of snow showers in the
evening. Northwest winds 10 to 15 knots. Waves 5 to 7 feet.
.SUNDAY...Chance of snow showers in the morning. chance of
showers. South winds 10 to 15 knots. Waves 3 to 5 feet.
.MONDAY...Chance of showers. chance of snow showers after
midnight. North winds 15 to 20 knots. Waves 4 to 6 feet.
$$
LSZ261-210900-
MAFOR 2104/
Superior West...GALE WARNING IN EFFECT...11720 11740 13850 12840
11830. Waves 1 to 2 feet building to 4 to 7 feet overnight. Waves
5 to 9 feet Thursday. Waves 4 to 7 feet subsiding to 3 to 6 feet
Thursday evening.
Superior North Central...GALE WARNING IN EFFECT...11840 14850
12840 11830. A chance of showers overnight and Thursday. Waves 2
to 4 feet building to 7 to 10 feet overnight. Waves 9 to 13 feet
subsiding to 7 to 10 feet Thursday. Waves 5 to 9 feet Thursday
evening.
Superior South Central...GALE WARNING IN EFFECT...11756 14856
11846 11840 11830. Waves 3 to 5 feet building to 9 to 12 feet
overnight. Waves 10 to 14 feet Thursday. Waves 6 to 10 feet
Thursday evening.
Superior East...GALE WARNING IN EFFECT...11846 13156 11146 12130
11820. Waves 4 to 7 feet building to 6 to 9 feet overnight. Waves
7 to 11 feet subsiding to 4 to 7 feet Thursday. Waves 3 to 6 feet
Thursday evening.
$$
Occasional waves will only be displayed when values meet or exceed 5 feet.
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