Dry and breezy conditions prevail across the High Plains where elevated to locally critical conditions continue through Thursday. Meanwhile, record warmth increases and spreads across the South, Southwest and into southern California into this last weekend of February. Meanwhile, a fast moving system moves across the Plains then off the mid-Atlantic by Thursday evening. Read More >
FZUS63 KMQT 260315
GLFLS
Experimental Tabular Open Lake Forecast for Lake Superior
National Weather Service Negaunee MI
1015 PM EST Wed Feb 25 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 29.5 inch low is exiting into northern Quebec tonight, with weak
ridging building over Lake Superior at 29.8 inches tonight into
Thursday. A strong clipper low averaging 29.1 inches moves across
northern Ontario Friday and Friday night, sending a 29.4 inch trough
across the lake. High pressure builds over the lake this weekend,
strengthening to 30.6 inches by Sunday.
LSZ162-260900-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
1000 PM EST Wed Feb 25 2026 /900 PM CST Wed Feb 25 2026/
, GALE WATCH IN EFFECT FROM FRIDAY AFTERNOON THROUGH LATE FRIDAY
NIGHT,
.REST OF TONIGHT, Northwest winds 5 to 15 knots backing
southwest late. A chance of snow showers after midnight. Waves
calm to 2 feet.
.THURSDAY, Southwest winds 5 to 15 knots increasing to 10 to
20 knots. Snow likely in the morning, then a chance of snow in
the afternoon. Waves calm to 2 feet.
.THURSDAY NIGHT, Southwest winds 10 to 20 knots. Waves calm to
2 feet.
.FRIDAY, Southwest winds 15 to 25 knots becoming west gales to
45 knots in the afternoon. Waves building to 6 to 9 feet
occasionally to 11 feet.
.FRIDAY NIGHT, West gales to 45 knots becoming northwest gales
to 35 knots after midnight. Heavy freezing spray. Waves building
to 7 to 10 feet occasionally to 13 feet, then subsiding to 3 to
5 feet occasionally to 7 feet.
.SATURDAY, Northwest winds 15 to 25 knots diminishing to 10 to
20 knots in the afternoon. Waves subsiding to calm to 2 feet.
.SATURDAY NIGHT, Northwest winds 10 to 20 knots becoming north
5 to 15 knots after midnight. Waves calm to 2 feet.
.SUNDAY, North winds 5 to 15 knots veering south. Waves calm to
2 feet.
.MONDAY, Southwest winds 10 to 20 knots increasing to gales to
35 knots. Waves building to 3 to 5 feet occasionally to 7 feet,
then subsiding to 2 to 4 feet.
Note, wave height forecasts are for ice free areas.
LSZ162-260900-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
1015 PM EST Wed Feb 25 2026 /915 PM CST Wed Feb 25 2026/
...GALE WATCH IN EFFECT FROM FRIDAY AFTERNOON THROUGH LATE FRIDAY
NIGHT...
.Overnight...
Weather.............Partly cloudy, then mostly cloudy with chance
of snow showers after midnight.
Sfc winds...........West 10 to 15 knots.
100-ft winds........West 15 to 20 knots.
Sig waves...........2 to 4 feet.
.THURSDAY...
Weather.............Partly sunny with chance of snow showers.
Sfc winds...........South 10 to 15 knots.
100-ft winds........South 15 to 20 knots.
Sig waves...........2 to 4 feet.
.THURSDAY NIGHT...
Weather.............Mostly cloudy.
Sfc winds...........Southwest 10 to 15 knots.
100-ft winds........Southwest 15 to 20 knots.
Sig waves...........2 to 4 feet.
.FRIDAY...
Weather.............Mostly sunny.
Sfc winds...........Southwest 15 to 20 knots increasing to 30 knots
in the afternoon.
100-ft winds........Southwest 20 to 25 knots increasing to 35 knot
gales in the afternoon.
Sig waves...........3 to 5 feet building to 6 to 9 feet in the
afternoon.
Ocnl waves..........Around 6 feet building to around 13 feet in the
afternoon.
.FRIDAY NIGHT...
Weather.............Partly cloudy with freezing spray.
Sfc winds...........West gales to 35 knots becoming northwest 15 to
20 knots after midnight.
100-ft winds........West gales to 45 knots becoming northwest 20 to
25 knots after midnight.
Sig waves...........8 to 12 feet.
Ocnl waves..........Around 14 feet.
Wave heights are for ice free areas.
.FORECAST DAYS 3 THROUGH 5...
.SATURDAY...Heavy freezing spray. West winds 15 to 20 knots.
Waves 15 to 20 feet.
.SUNDAY...North winds 10 to 15 knots. Waves 4 to 6 feet.
.MONDAY...Southwest winds 15 to 20 knots. Waves 6 to 9 feet.
$$
LSZ263-260900-
Lake Superior from Saxon Harbor WI to Upper Entrance to Portage
Canal MI 5NM off shore to the US/Canadian border including Isle
Royale National Park-
1015 PM EST Wed Feb 25 2026
...GALE WATCH IN EFFECT FROM FRIDAY AFTERNOON THROUGH LATE FRIDAY
NIGHT...
.Overnight...
Weather.............Mostly cloudy.
Sfc winds...........West 10 to 15 knots.
100-ft winds........West 15 to 20 knots.
Sig waves...........3 to 5 feet.
Ocnl waves..........Around 6 feet.
.THURSDAY...
Weather.............Snow showers likely, then partly sunny with
chance of snow showers in the afternoon.
Sfc winds...........South 10 to 15 knots.
100-ft winds........South 15 to 20 knots.
Sig waves...........2 to 4 feet.
.THURSDAY NIGHT...
Weather.............Mostly cloudy.
Sfc winds...........Southwest 10 to 15 knots.
100-ft winds........Southwest 15 to 20 knots.
Sig waves...........2 to 4 feet building to 3 to 5 feet after
midnight.
Ocnl waves..........Around 5 feet after midnight.
.FRIDAY...
Weather.............Partly sunny.
Sfc winds...........Southwest 20 to 25 knots increasing to 35 knot
gales in the afternoon.
100-ft winds........Southwest to 30 knots increasing to 45 knot
gales in the afternoon.
Sig waves...........4 to 6 feet building to 8 to 12 feet in the
afternoon.
Ocnl waves..........Around 8 feet building to around 15 feet in the
afternoon.
.FRIDAY NIGHT...
Weather.............Mostly cloudy with freezing spray.
Sfc winds...........West gales to 40 knots becoming northwest to 30
knots after midnight.
100-ft winds........West storm force winds to 50 knots becoming
northwest gales to 35 knots after midnight.
Sig waves...........14 to 18 feet.
Ocnl waves..........Around 22 feet.
Wave heights are for ice free areas.
.FORECAST DAYS 3 THROUGH 5...
.SATURDAY...Heavy freezing spray. West winds 15 to 20 knots.
Waves 15 to 20 feet.
.SUNDAY...North winds 10 to 15 knots. Waves 4 to 6 feet.
.MONDAY...Southwest winds 15 to 20 knots. Waves 6 to 9 feet.
$$
LSZ264-260900-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
1015 PM EST Wed Feb 25 2026
.Overnight...
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 7 feet.
.THURSDAY...
Weather.............Mostly cloudy with chance of snow showers, then
mostly cloudy with snow showers likely in the
afternoon.
Sfc winds...........West 5 to 10 knots becoming south 10 to 15
knots in the afternoon.
100-ft winds........West 10 to 15 knots becoming south 15 to 20
knots in the afternoon.
Sig waves...........2 to 4 feet.
.THURSDAY NIGHT...
Weather.............Mostly cloudy with snow showers likely, then
mostly cloudy after midnight.
Sfc winds...........Southwest 10 to 15 knots.
100-ft winds........Southwest 15 to 20 knots.
Sig waves...........2 to 4 feet building to 3 to 5 feet after
midnight.
Ocnl waves..........Around 5 feet after midnight.
.FRIDAY...
Weather.............Partly sunny.
Sfc winds...........Southwest 20 to 25 knots increasing to 35 knot
gales in the afternoon.
100-ft winds........Southwest to 30 knots increasing to 45 knot
gales in the afternoon.
Sig waves...........4 to 6 feet building to 8 to 12 feet in the
afternoon.
Ocnl waves..........Around 8 feet building to around 15 feet in the
afternoon.
.FRIDAY NIGHT...
Weather.............Mostly cloudy with heavy freezing spray.
Sfc winds...........Northwest gales to 45 knots.
100-ft winds........Northwest storm force winds to 55 knots.
Sig waves...........15 to 20 feet.
Ocnl waves..........Around 26 feet.
.FORECAST DAYS 3 THROUGH 5...
.SATURDAY...Heavy freezing spray. West winds 15 to 20 knots.
Waves 12 to 16 feet.
.SUNDAY...North winds 10 to 15 knots. Waves 3 to 5 feet.
.MONDAY...Southwest winds 15 to 20 knots. Waves 5 to 7 feet.
$$
LSZ265-260900-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
1015 PM EST Wed Feb 25 2026
.Overnight...
Weather.............Mostly cloudy with a slight chance of snow
showers, then mostly cloudy after midnight.
Sfc winds...........West 15 to 20 knots.
100-ft winds........West 20 to 25 knots.
Sig waves...........3 to 5 feet.
Ocnl waves..........Around 6 feet.
.THURSDAY...
Weather.............Snow showers likely.
Sfc winds...........West 10 to 15 knots becoming south 5 to 10
knots in the afternoon.
100-ft winds........West 15 to 20 knots becoming south 10 to 15
knots in the afternoon.
Sig waves...........2 to 4 feet.
.THURSDAY NIGHT...
Weather.............Mostly cloudy with snow showers likely, then
mostly cloudy after midnight.
Sfc winds...........South 10 to 15 knots.
100-ft winds........South 15 to 20 knots.
Sig waves...........2 to 4 feet.
.FRIDAY...
Weather.............Partly sunny.
Sfc winds...........South 10 to 15 knots increasing to southwest to
30 knots in the afternoon.
100-ft winds........South 15 to 20 knots increasing to southwest
gales to 35 knots in the afternoon.
Sig waves...........2 to 4 feet building to 5 to 7 feet in the
afternoon.
Ocnl waves..........Around 9 feet in the afternoon.
.FRIDAY NIGHT...
Weather.............Mostly cloudy with freezing spray.
Sfc winds...........West gales to 45 knots.
100-ft winds........West storm force winds to 55 knots.
Sig waves...........12 to 16 feet.
Ocnl waves..........Around 19 feet.
Wave heights are for ice free areas.
.FORECAST DAYS 3 THROUGH 5...
.SATURDAY...Heavy freezing spray. West winds 15 to 20 knots.
Waves 15 to 20 feet.
.SUNDAY...North winds 10 to 15 knots. Waves 4 to 6 feet.
.MONDAY...Southwest winds 15 to 20 knots. Waves 6 to 9 feet.
$$
LSZ266-260900-
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 Feb 25 2026
...HEAVY FREEZING SPRAY WARNING IN EFFECT UNTIL 1 AM EST
THURSDAY...
.Overnight...
Weather.............Mostly cloudy with freezing spray with possible
snow showers and freezing rain.
Sfc winds...........West 20 to 25 knots.
100-ft winds........West to 30 knots.
Sig waves...........6 to 9 feet.
Ocnl waves..........Around 12 feet.
.THURSDAY...
Weather.............Mostly cloudy with chance of snow showers, then
mostly cloudy with snow showers likely in the
afternoon.
Sfc winds...........West 10 to 15 knots becoming south in the
afternoon.
100-ft winds........West 15 to 20 knots becoming south in the
afternoon.
Sig waves...........4 to 6 feet.
Ocnl waves..........Around 7 feet.
.THURSDAY NIGHT...
Weather.............Mostly cloudy with snow showers likely, then
mostly cloudy after midnight.
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.
.FRIDAY...
Weather.............Partly sunny.
Sfc winds...........South to 30 knots.
100-ft winds........South gales to 35 knots.
Sig waves...........4 to 6 feet building to 8 to 12 feet in the
afternoon.
Ocnl waves..........Around 8 feet building to around 14 feet in the
afternoon.
.FRIDAY NIGHT...
Weather.............Mostly cloudy with freezing spray.
Sfc winds...........West gales to 45 knots.
100-ft winds........West storm force winds to 55 knots.
Sig waves...........18 to 23 feet.
Ocnl waves..........Around 30 feet.
.FORECAST DAYS 3 THROUGH 5...
.SATURDAY...Heavy freezing spray. West winds 15 to 20 knots.
Waves 12 to 16 feet.
.SUNDAY...North winds 10 to 15 knots. Waves 3 to 5 feet.
.MONDAY...Southwest winds 15 to 20 knots. Waves 5 to 7 feet.
$$
LSZ267-260900-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
1015 PM EST Wed Feb 25 2026
...HEAVY FREEZING SPRAY WARNING IN EFFECT UNTIL 1 AM EST
THURSDAY...
.Overnight...
Weather.............Freezing spray with snow showers likely, then
mostly cloudy with chance of snow showers and
freezing spray after midnight.
Sfc winds...........Northwest 20 to 25 knots becoming north 10 to
15 knots after midnight.
100-ft winds........Northwest to 30 knots becoming north 15 to 20
knots after midnight.
Sig waves...........6 to 9 feet.
Ocnl waves..........Around 12 feet.
.THURSDAY...
Weather.............Mostly cloudy with chance of snow showers, then
mostly cloudy with snow showers likely in the
afternoon.
Sfc winds...........Northeast 10 to 15 knots becoming southwest 15
to 20 knots in the afternoon.
100-ft winds........Northeast 15 to 20 knots becoming southwest 20
to 25 knots in the afternoon.
Sig waves...........4 to 6 feet.
Ocnl waves..........Around 7 feet.
.THURSDAY NIGHT...
Weather.............Mostly cloudy with snow showers likely, then
mostly cloudy with chance of snow showers after
midnight.
Sfc winds...........Southwest 10 to 15 knots.
100-ft winds........Southwest 15 to 20 knots.
Sig waves...........3 to 5 feet.
Ocnl waves..........Around 7 feet.
.FRIDAY...
Weather.............Partly sunny.
Sfc winds...........South 20 to 25 knots.
100-ft winds........South to 30 knots.
Sig waves...........4 to 6 feet building to 6 to 9 feet in the
afternoon.
Ocnl waves..........Around 8 feet building to around 12 feet in the
afternoon.
.FRIDAY NIGHT...
Weather.............Mostly cloudy, then heavy freezing spray after
midnight.
Sfc winds...........West gales to 45 knots.
100-ft winds........West storm force winds to 55 knots.
Sig waves...........18 to 23 feet building to 20 to 25 feet after
midnight.
Ocnl waves..........Around 27 feet building to around 33 feet after
midnight.
Wave heights are for ice free areas.
.FORECAST DAYS 3 THROUGH 5...
.SATURDAY...Heavy freezing spray. West winds 15 to 20 knots.
Waves 15 to 20 feet.
.SUNDAY...North winds 10 to 15 knots. Waves 4 to 6 feet.
.MONDAY...Southwest winds 15 to 20 knots. Waves 6 to 9 feet.
$$
LSZ261-260900-
MAFOR 2604/
Superior West 11710 11600 11500 12517 13510. Waves 1 to 3 feet
overnight. Waves 2 feet or less Thursday and Thursday evening.
Superior North Central 11720 11710 11610 11510 11417 11427 11517
11510. Waves 2 to 4 feet subsiding to 1 to 3 feet overnight.
Waves 1 to 3 feet Thursday and Thursday evening.
Superior South Central...HEAVY FREEZING SPRAY WARNING IN EFFECT...
11730 11620 11610 11510 12427 11527 11520. Waves 3 to 5 feet
subsiding to 2 to 4 feet overnight. Waves 1 to 3 feet Thursday
and Thursday evening.
Superior East...HEAVY FREEZING SPRAY WARNING IN EFFECT...11737
11720 11710 11510 11527 12427 11520. Waves 5 to 7 feet subsiding
to 3 to 5 feet overnight. Waves 2 to 4 feet Thursday. Waves 3 to
5 feet Thursday evening.
$$
Occasional waves will only be displayed when values meet or exceed 5 feet.
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