Showers and thunderstorms will accompany a cold front that will move across the eastern third of the country through Sunday. In the wake of this front, cooler temperatures will follow for most areas east of the Rockies. A wet pattern is expected to unfold across most of Florida this week with a persistent onshore flow and increase rip currents. For Hawaii, a return toward more rain the week ahead. Read More >
FZUS63 KMQT 051415
GLFLS
Experimental Tabular Open Lake Forecast for Lake Superior
National Weather Service Negaunee MI
1015 AM EDT Sun Apr 5 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 29.3 inch low over Quebec continues departing northeast today. A
weak 30.0 inch trough passes over the lake tonight into Monday.
Monday afternoon, 30.6 inch high pressure resides over North Dakota
before moving over the Upper Great Lakes Tuesday morning at 30.5
inches. The high builds back to 30.6 inches over the Lower Great
Lakes Tuesday night as a 29.5 inch low organizes along the
Montana/Saskatchewan border. This low moves over the Northwest Angle
Wednesday night before moving north of the lake through Thursday
morning. High pressure of 30.4 inches then moves over the Upper
Great Lakes Friday.
LSZ162-052000-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
1000 AM EDT Sun Apr 5 2026 /900 AM CDT Sun Apr 5 2026/
.REST OF TODAY, Northwest winds 10 to 20 knots backing west in
the afternoon. A slight chance of rain and snow showers by mid
afternoon. Waves 2 to 4 feet subsiding to calm to 2 feet.
.TONIGHT, West winds 10 to 20 knots veering northwest after
midnight, then becoming north 15 to 25 knots late. A chance of
snow showers, possibly mixed with rain. Waves building to 2 to
4 feet.
.MONDAY, North winds 20 to 30 knots diminishing to 15 to
25 knots in the afternoon, then backing northwest late. A slight
chance of snow showers. Waves building to 3 to 5 feet
occasionally to 7 feet, then subsiding to 2 to 4 feet.
.MONDAY NIGHT, Northwest winds 10 to 20 knots diminishing to
5 to 15 knots after midnight. Waves subsiding to calm to 2 feet.
.TUESDAY, West winds 5 to 15 knots backing southwest by mid
afternoon. Waves calm to 2 feet.
.TUESDAY NIGHT, Southeast winds 5 to 15 knots becoming south
10 to 20 knots after midnight. A chance of snow showers. Waves
building to 1 to 3 feet.
.WEDNESDAY, Southeast winds 15 to 25 knots veering west. Rain
showers, possibly mixed with snow, then a chance of rain showers.
Waves building to 3 to 6 feet occasionally to 8 feet, then
subsiding to 2 to 4 feet.
.THURSDAY, West winds 15 to 25 knots becoming north 5 to
15 knots. Waves subsiding to calm to 2 feet.
LSZ162-052000-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
1015 AM EDT Sun Apr 5 2026 /915 AM CDT Sun Apr 5 2026/
.This Afternoon...
Weather.............Mostly sunny.
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.
.TONIGHT...
Weather.............Mostly cloudy with a slight chance of rain and
snow showers, then mostly cloudy with chance of
snow showers and slight chance of showers after
midnight.
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.
.MONDAY...
Weather.............Partly sunny.
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.
.MONDAY 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 6 feet in the evening.
.FORECAST DAYS 3 THROUGH 5...
.TUESDAY...North winds 10 to 15 knots. Waves 5 to 7 feet.
.WEDNESDAY...Breezy. Chance of snow showers in the morning.
showers in the afternoon and evening. chance of showers after
midnight. South winds 20 to 25 knots. Waves 12 to 16 feet.
.THURSDAY...Chance of showers in the morning. Southwest winds
15 to 20 knots. Waves 8 to 12 feet.
$$
LSZ263-052000-
Lake Superior from Saxon Harbor WI to Upper Entrance to Portage
Canal MI 5NM off shore to the US/Canadian border including Isle
Royale National Park-
1015 AM EDT Sun Apr 5 2026
.This Afternoon...
Weather.............Mostly sunny.
Sfc winds...........West 15 to 20 knots.
100-ft winds........West 20 to 25 knots.
Sig waves...........5 to 7 feet.
Ocnl waves..........Around 9 feet.
.TONIGHT...
Weather.............Mostly cloudy with a slight chance of rain and
snow showers, then mostly cloudy with chance of
snow showers and slight chance of showers after
midnight.
Sfc winds...........West 10 to 15 knots.
100-ft winds........West 15 to 20 knots becoming north after
midnight.
Sig waves...........3 to 5 feet.
Ocnl waves..........Around 5 feet.
.MONDAY...
Weather.............Mostly cloudy with freezing spray with a chance
of snow showers.
Sfc winds...........North 20 to 25 knots.
100-ft winds........North to 30 knots.
Sig waves...........6 to 9 feet.
Ocnl waves..........Around 11 feet.
.MONDAY NIGHT...
Weather.............Partly cloudy.
Sfc winds...........Northwest 15 to 20 knots.
100-ft winds........Northwest 20 to 25 knots.
Sig waves...........4 to 6 feet.
Ocnl waves..........Around 7 feet.
.FORECAST DAYS 3 THROUGH 5...
.TUESDAY...North winds 10 to 15 knots. Waves 5 to 7 feet.
.WEDNESDAY...Breezy. Chance of snow showers in the morning.
showers in the afternoon and evening. chance of showers after
midnight. South winds 20 to 25 knots. Waves 12 to 16 feet.
.THURSDAY...Chance of showers in the morning. Southwest winds
15 to 20 knots. Waves 8 to 12 feet.
$$
LSZ264-052000-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
1015 AM EDT Sun Apr 5 2026
.This Afternoon...
Weather.............Mostly sunny.
Sfc winds...........Northwest 20 to 25 knots.
100-ft winds........Northwest to 30 knots.
Sig waves...........8 to 12 feet.
Ocnl waves..........Around 13 feet.
.TONIGHT...
Weather.............Mostly cloudy with a slight chance of snow
showers, then mostly cloudy with chance of snow
showers and slight chance of showers after
midnight.
Sfc winds...........West 10 to 15 knots becoming north 15 to 20
knots after midnight.
100-ft winds........West 15 to 20 knots becoming north 20 to 25
knots after midnight.
Sig waves...........3 to 5 feet.
Ocnl waves..........Around 6 feet.
.MONDAY...
Weather.............Mostly cloudy with freezing spray with a chance
of snow showers.
Sfc winds...........North to 30 knots.
100-ft winds........North gales to 35 knots.
Sig waves...........6 to 9 feet.
Ocnl waves..........Around 11 feet.
.MONDAY NIGHT...
Weather.............Mostly cloudy with freezing spray, then partly
cloudy after midnight.
Sfc winds...........Northwest 15 to 20 knots.
100-ft winds........Northwest 20 to 25 knots.
Sig waves...........5 to 7 feet.
Ocnl waves..........Around 9 feet.
.FORECAST DAYS 3 THROUGH 5...
.TUESDAY...North winds 10 to 15 knots. Waves 5 to 7 feet.
.WEDNESDAY...Breezy. Chance of snow showers in the morning.
showers in the afternoon and evening. chance of showers after
midnight. South winds 20 to 25 knots. Waves 12 to 16 feet.
.THURSDAY...Chance of showers in the morning. Southwest winds
15 to 20 knots. Waves 8 to 12 feet.
$$
LSZ265-052000-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
1015 AM EDT Sun Apr 5 2026
.This Afternoon...
Weather.............Partly sunny.
Sfc winds...........Northwest to 30 knots decreasing to 15 to 20
knots in the afternoon.
100-ft winds........Northwest gales to 35 knots decreasing to 20 to
25 knots in the afternoon.
Sig waves...........8 to 12 feet.
Ocnl waves..........Around 14 feet.
.TONIGHT...
Weather.............Mostly cloudy with a slight chance of rain and
snow showers, then mostly cloudy with chance of
snow showers after midnight.
Sfc winds...........West 10 to 15 knots.
100-ft winds........West 15 to 20 knots.
Sig waves...........4 to 6 feet subsiding to 2 to 4 feet after
midnight.
Ocnl waves..........Around 8 feet in the evening.
.MONDAY...
Weather.............Snow showers likely and freezing spray.
Sfc winds...........North 20 to 25 knots.
100-ft winds........North to 30 knots.
Sig waves...........6 to 9 feet.
Ocnl waves..........Around 12 feet.
.MONDAY NIGHT...
Weather.............Mostly cloudy with freezing spray.
Sfc winds...........Northwest 20 to 25 knots.
100-ft winds........Northwest to 30 knots.
Sig waves...........6 to 9 feet.
Ocnl waves..........Around 12 feet.
.FORECAST DAYS 3 THROUGH 5...
.TUESDAY...North winds 10 to 15 knots. Waves 5 to 7 feet.
.WEDNESDAY...Breezy. Chance of snow showers in the morning.
showers in the afternoon and evening. chance of showers after
midnight. South winds 20 to 25 knots. Waves 12 to 16 feet.
.THURSDAY...Chance of showers in the morning. Southwest winds
15 to 20 knots. Waves 8 to 12 feet.
$$
LSZ266-052000-
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 AM EDT Sun Apr 5 2026
...GALE WARNING IN EFFECT UNTIL 11 AM EDT THIS MORNING...
.This Afternoon...
Weather.............Partly sunny.
Sfc winds...........Northwest to 30 knots.
100-ft winds........Northwest gales to 35 knots.
Sig waves...........10 to 14 feet.
Ocnl waves..........Around 18 feet.
.TONIGHT...
Weather.............Mostly cloudy, then slight chance of snow
showers after midnight.
Sfc winds...........Northwest 15 to 20 knots.
100-ft winds........Northwest 20 to 25 knots.
Sig waves...........6 to 9 feet subsiding to 4 to 6 feet after
midnight.
Ocnl waves..........Around 12 feet subsiding to around 7 feet after
midnight.
.MONDAY...
Weather.............Mostly cloudy with freezing spray with a chance
of snow showers, then mostly cloudy with
freezing spray in the afternoon.
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.
.MONDAY NIGHT...
Weather.............Mostly cloudy with freezing spray.
Sfc winds...........Northwest to 30 knots becoming north 15 to 20
knots after midnight.
100-ft winds........Northwest gales to 35 knots becoming north 20
to 25 knots after midnight.
Sig waves...........8 to 12 feet.
Ocnl waves..........Around 14 feet.
.FORECAST DAYS 3 THROUGH 5...
.TUESDAY...North winds 10 to 15 knots. Waves 5 to 7 feet.
.WEDNESDAY...Breezy. Chance of snow showers in the morning.
showers in the afternoon and evening. chance of showers after
midnight. South winds 20 to 25 knots. Waves 12 to 16 feet.
.THURSDAY...Chance of showers in the morning. Southwest winds
15 to 20 knots. Waves 8 to 12 feet.
$$
LSZ267-052000-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
1015 AM EDT Sun Apr 5 2026
.This Afternoon...
Weather.............Mostly cloudy with a slight chance of snow
showers, then partly sunny in the afternoon.
Sfc winds...........Northwest to 30 knots.
100-ft winds........Northwest gales to 35 knots.
Sig waves...........10 to 14 feet.
Ocnl waves..........Around 17 feet.
.TONIGHT...
Weather.............Mostly cloudy, then slight chance of snow
showers after midnight.
Sfc winds...........Northwest 15 to 20 knots.
100-ft winds........Northwest 20 to 25 knots.
Sig waves...........6 to 9 feet subsiding to 4 to 6 feet after
midnight.
Ocnl waves..........Around 12 feet subsiding to around 7 feet after
midnight.
.MONDAY...
Weather.............Mostly cloudy with chance of snow showers, then
mostly cloudy with freezing spray with a chance
of snow showers in the afternoon.
Sfc winds...........North 20 to 25 knots.
100-ft winds........North to 30 knots.
Sig waves...........6 to 9 feet.
Ocnl waves..........Around 9 feet.
.MONDAY NIGHT...
Weather.............Mostly cloudy with freezing spray with a chance
of snow showers, then mostly cloudy with
freezing spray after midnight.
Sfc winds...........Northwest to 30 knots becoming north 15 to 20
knots after midnight.
100-ft winds........Northwest gales to 35 knots becoming north 20
to 25 knots after midnight.
Sig waves...........8 to 12 feet.
Ocnl waves..........Around 13 feet.
Wave heights are for ice free areas.
.FORECAST DAYS 3 THROUGH 5...
.TUESDAY...North winds 10 to 15 knots. Waves 5 to 7 feet.
.WEDNESDAY...Breezy. Chance of snow showers in the morning.
showers in the afternoon and evening. chance of showers after
midnight. South winds 20 to 25 knots. Waves 14 to 18 feet.
.THURSDAY...Chance of showers in the morning. Southwest winds
15 to 20 knots. Waves 10 to 14 feet.
$$
LSZ261-052000-
MAFOR 0515/
Superior West 13620 11610 12710 11830 11831. A chance of snow
showers overnight and Monday morning. Waves 2 to 4 feet this
afternoon. Waves 1 to 3 feet tonight. Waves 3 to 6 feet Monday
morning.
Superior North Central 11730 11720 11620 11710 12820 11830 11840.
A chance of snow showers overnight and Monday morning. Waves 5 to
8 feet subsiding to 3 to 5 feet this afternoon. Waves 2 to 4 feet
tonight. Waves 4 to 7 feet Monday morning.
Superior South Central 11740 12730 11720 11710 12820 11847. Waves
7 to 11 feet subsiding to 5 to 8 feet this afternoon. Waves 3 to
6 feet subsiding to 1 to 3 feet tonight. Waves 3 to 5 feet
building to 4 to 7 feet Monday morning.
Superior East 12740 11730 12720 12820 11830. A chance of snow
showers Monday morning. Waves 8 to 11 feet subsiding to 6 to 9
feet this afternoon. Waves 4 to 7 feet subsiding to 3 to 5 feet
tonight. Waves 3 to 5 feet Monday morning.
$$
Occasional waves will only be displayed when values meet or exceed 5 feet.
Follow us on X
Follow us on Facebook
Follow us on YouTube
MQT RSS Feed