
A Moderate Risk of severe thunderstorms (level 4 of 5) is in the outlook across portions of the Midwest today. Damaging winds, a few tornadoes and frequent lightning with heavy rainfall are in the forecast. Meanwhile, dangerous heat across the southern Plains into the Great Lakes, mid-Atlantic and Northeast will expand into Friday. Risk for wildfires for the central Rockies and Sacramento Valley. Read More >
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Nearshore Forecast
436
FZUS53 KDLH 111517
NSHDLH
Nearshore Marine Forecast
National Weather Service Duluth MN
1017 AM CDT Thu Jun 11 2026
For waters within five nautical miles of shore on Lake Superior.
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.
LSZ140-112200-
Grand Portage to Grand Marais MN-
1017 AM CDT Thu Jun 11 2026
...SMALL CRAFT ADVISORY IN EFFECT UNTIL 7 PM CDT THIS EVENING...
.REST OF TODAY...Southwest wind 15 to 20 knots with gusts to
around 25 knots. Chance of rain showers late. Waves 1 to 3 feet.
.TONIGHT...Southwest wind 10 to 15 knots. Gusts up to 20 knots
early in the evening then 20 knots after midnight. Chance of rain
showers through the night. Waves 1 to 3 feet.
.FRIDAY...Southwest wind 15 to 20 knots. Gusts up to 20 knots
increasing to 25 knots late in the morning, then increasing to
30 knots early in the afternoon decreasing to 25 knots late in
the afternoon. Slight chance of rain showers. Waves 1 to 3 feet
building to 3 to 5 feet in the late morning and afternoon. A
small craft advisory may be needed.
.FRIDAY NIGHT...Southwest wind 10 to 15 knots. Gusts up to
25 knots decreasing to 20 knots late in the evening, then then
20 knots early in the morning. Partly cloudy. Waves 2 to 4 feet
subsiding to 1 to 3 feet after midnight. A small craft advisory
may be needed.
$$
LSZ141-112200-
Grand Marais to Taconite Harbor MN-
1017 AM CDT Thu Jun 11 2026
...SMALL CRAFT ADVISORY IN EFFECT UNTIL 7 PM CDT THIS EVENING...
.REST OF TODAY...Southwest wind 10 to 15 knots. Gusts up to
25 knots. Slight chance of rain showers early in the afternoon.
Chance of rain showers late. Waves 1 to 2 feet.
.TONIGHT...Southwest wind 5 to 10 knots. Gusts up to 20 knots
early in the evening then 20 knots after midnight. Chance of rain
showers in the evening, then slight chance of rain showers after
midnight. Waves 1 to 2 feet.
.FRIDAY...Southwest wind 10 to 15 knots. Gusts up to 20 knots
increasing to 25 knots in the late morning and afternoon. Slight
chance of rain showers in the morning. Waves 1 to 3 feet.
.FRIDAY NIGHT...West wind 10 to 15 knots. Gusts up to 20 knots
early in the evening. Partly cloudy. Waves 1 to 3 feet.
$$
LSZ142-112200-
Taconite Harbor to Silver Bay Harbor MN-
1017 AM CDT Thu Jun 11 2026
...SMALL CRAFT ADVISORY IN EFFECT UNTIL 7 PM CDT THIS EVENING...
.REST OF TODAY...Southwest wind 10 to 15 knots. Gusts up to
25 knots in the afternoon. Slight chance of rain showers early in
the afternoon. Chance of rain showers late. Waves 1 foot or less.
.TONIGHT...Southwest wind 5 to 10 knots with gusts to around
20 knots becoming west with gusts to around 20 knots after
midnight. Chance of rain showers in the evening. Waves 1 to
2 feet.
.FRIDAY...West wind 10 to 15 knots. Gusts up to 20 knots
increasing to 25 knots in the late morning and afternoon. Slight
chance of rain showers in the morning. Waves 1 to 2 feet.
.FRIDAY NIGHT...West wind 10 to 15 knots. Gusts up to 20 knots
early in the evening. Partly cloudy. Waves 1 to 2 feet.
$$
LSZ143-112200-
Silver Bay Harbor to Two Harbors MN-
1017 AM CDT Thu Jun 11 2026
.REST OF TODAY...Southwest wind 10 to 15 knots. Gusts up to
25 knots. Chance of rain showers in the afternoon. Waves 1 to
2 feet.
.TONIGHT...Southwest wind 5 to 10 knots. Gusts up to 20 knots
early in the evening then 20 knots after midnight. Chance of rain
showers in the evening. Waves 1 foot or less.
.FRIDAY...West wind 10 to 15 knots. Gusts up to 20 knots
increasing to 25 knots in the late morning and afternoon. Slight
chance of rain showers in the morning. Waves 1 to 2 feet.
.FRIDAY NIGHT...West wind 10 to 15 knots. Gusts up to 20 knots
early in the evening. Partly cloudy. Waves 1 to 2 feet.
$$
LSZ144-112200-
Two Harbors to Duluth MN-
1017 AM CDT Thu Jun 11 2026
.REST OF TODAY...Southwest wind 10 to 15 knots. Gusts up to
20 knots in the afternoon. Chance of rain showers in the
afternoon. Waves 1 to 2 feet.
.TONIGHT...Southwest wind 5 to 10 knots with gusts to around
20 knots. Chance of rain showers in the evening. Waves 1 foot or
less.
.FRIDAY...West wind 15 to 20 knots. Gusts up to 20 knots
increasing to 25 knots in the late morning and afternoon. Slight
chance of rain showers in the morning. Waves 1 to 3 feet.
.FRIDAY NIGHT...West wind 10 to 15 knots. Gusts up to 25 knots
early in the evening. Slight chance of rain showers after
midnight. Waves 1 to 2 feet.
$$
LSZ145-112200-
Duluth MN to Port Wing WI-
1017 AM CDT Thu Jun 11 2026
.REST OF TODAY...Southwest wind 10 to 15 knots easing to 10 knots
late. Gusts up to 20 knots in the afternoon. Chance of rain
showers early in the afternoon. Rain showers likely late. Waves
1 foot or less.
.TONIGHT...Southwest wind 10 to 15 knots. Gusts up to 20 knots in
the late evening and overnight. Chance of rain showers in the
evening. Waves 1 to 2 feet.
.FRIDAY...West wind 15 to 20 knots. Gusts up to 20 knots
increasing to 25 knots in the late morning and afternoon. Slight
chance of rain showers in the morning. Waves 1 to 3 feet.
.FRIDAY NIGHT...Southwest wind 10 to 15 knots. Gusts up to
25 knots early in the evening. Slight chance of rain showers
after midnight. Waves 1 to 3 feet.
$$
LSZ146-112200-
Port Wing to Sand Island WI-
1017 AM CDT Thu Jun 11 2026
.REST OF TODAY...Southwest wind 10 to 15 knots. Gusts up to
20 knots in the afternoon. Chance of rain showers early in the
afternoon. Rain showers likely late. Waves 1 foot or less.
.TONIGHT...Southwest wind 10 to 15 knots. Gusts up to 20 knots in
the late evening and overnight. Chance of rain showers in the
evening. Waves 1 to 2 feet.
.FRIDAY...Southwest wind 15 to 20 knots with gusts to around
25 knots becoming west 5 to 15 knots with gusts to around
25 knots late in the afternoon. Slight chance of rain showers in
the morning. Waves 1 to 3 feet.
.FRIDAY NIGHT...Southwest wind 10 to 15 knots with gusts to
around 20 knots easing to 10 knots early in the morning. Partly
cloudy. Waves 1 to 3 feet.
$$
LSZ147-112200-
Sand Island to Bayfield WI-
1017 AM CDT Thu Jun 11 2026
.REST OF TODAY...Southwest wind 10 to 15 knots with gusts to
around 20 knots. Chance of rain showers early in the afternoon.
Rain showers likely late. Waves 1 foot or less.
.TONIGHT...Southwest wind 10 to 15 knots with gusts to around
20 knots becoming west with gusts to around 25 knots after
midnight. Chance of rain showers in the evening, then slight
chance of rain showers after midnight. Waves 1 to 2 feet.
.FRIDAY...West wind 15 to 20 knots with gusts to around 30 knots
easing to 5 to 15 knots with gusts to around 25 knots late in the
afternoon. Slight chance of rain showers in the morning. Waves
1 to 2 feet building to 1 to 3 feet in the late morning and
afternoon.
.FRIDAY NIGHT...Southwest wind 10 to 15 knots. Gusts up to
20 knots early in the evening then 20 knots early in the morning.
Partly cloudy. Waves 1 to 2 feet.
$$
LSZ150-112200-
Outer Apostle Islands Beyond 5 NM from Mainland-
1017 AM CDT Thu Jun 11 2026
.REST OF TODAY...Southwest wind 10 to 15 knots. Gusts up to
20 knots in the afternoon. Chance of rain showers early in the
afternoon. Rain showers likely late. Waves 1 to 2 feet.
.TONIGHT...Southwest wind 10 to 15 knots. Gusts up to 25 knots.
Chance of rain showers through the night. Waves 1 to 3 feet.
.FRIDAY...Southwest wind 15 to 20 knots. Gusts up to 25 knots
increasing to 30 knots in the late morning and early afternoon,
then decreasing to 25 knots late in the afternoon. Slight chance
of rain showers in the morning. Waves 1 to 3 feet.
.FRIDAY NIGHT...Southwest wind 10 to 15 knots. Gusts up to
20 knots early in the evening then 20 knots early in the morning.
Partly cloudy. Waves 1 to 2 feet.
$$
LSZ121-112200-
Chequamegon Bay-Bayfield to Oak Point WI-
1017 AM CDT Thu Jun 11 2026
.REST OF TODAY...Southwest wind 5 to 10 knots. Gusts up to
20 knots early in the afternoon. Chance of rain showers early in
the afternoon. Rain showers likely late. Waves 1 foot or less.
.TONIGHT...Southwest wind 5 to 10 knots with gusts to around
20 knots becoming west 10 to 15 knots with gusts to around
20 knots after midnight, then easing to 10 knots with gusts to
around 20 knots early in the morning. Chance of rain showers in
the evening, then slight chance of rain showers after midnight.
Waves 1 foot or less.
.FRIDAY...West wind 10 to 15 knots. Gusts up to 20 knots
increasing to 25 knots in the late morning and afternoon. Slight
chance of rain showers in the morning. Waves 1 to 2 feet.
.FRIDAY NIGHT...Southwest wind 10 to 15 knots. Gusts up to
20 knots early in the evening. Slight chance of rain showers
after midnight. Waves 1 foot or less.
$$
LSZ148-112200-
Oak Point to Saxon Harbor WI-
1017 AM CDT Thu Jun 11 2026
.REST OF TODAY...Southwest wind 5 to 10 knots. Gusts up to
20 knots early in the afternoon. Chance of showers early in the
afternoon. Showers likely late. Waves 1 foot or less.
.TONIGHT...Southwest wind 10 to 15 knots. Gusts up to 20 knots in
the late evening and overnight. Chance of rain showers through
the night. Waves 1 to 2 feet.
.FRIDAY...West wind 15 to 20 knots easing to 5 to 15 knots late
in the afternoon. Gusts up to 20 knots increasing to 25 knots in
the late morning and afternoon. Slight chance of rain showers in
the morning. Waves 1 to 2 feet.
.FRIDAY NIGHT...Southwest wind 10 to 15 knots with gusts to
around 20 knots easing to 10 knots early in the morning. Slight
chance of rain showers after midnight. Waves 1 to 2 feet.
$$
Graphical marine forecasts are available online at:
weather.gov/greatlakes
WFO DLH

Open Waters Forecast
622
FZUS63 KMQT 111401
GLFLS
Open Lake Forecast for Lake Superior
National Weather Service Marquette MI
1000 AM EDT Thu Jun 11 2026
For waters beyond 5 nautical miles of shore on Lake Superior.
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...
Troughing of around 29.5 inches gives way to weak ridging of 29.7
inches early this afternoon, before a shortwave low riding into the
Upper Great Lakes this evening drops down to 29.3 inches over the
eastern lake this evening. Behind the low, troughing progressively
weakens to 29.7 inches Friday through Friday night. While troughing
looks to restrengthen a little to 29.6 inches on Saturday, expect
weak ridging of 29.8 inches to return to Lake Superior on Sunday. A
29.7 inch trough moves through the lake Sunday night before 29.8
inch ridging pushes back in on Monday.
LSZ162-112000-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
1000 AM EDT Thu Jun 11 2026 /900 AM CDT Thu Jun 11 2026/
.REST OF TODAY...Southwest winds 10 to 20 knots. A chance of
showers by mid afternoon. Waves calm to 2 feet building to 1 to
3 feet.
.TONIGHT...Southwest winds 10 to 20 knots veering west after
midnight, then increasing to 15 to 25 knots late. A chance of
showers. Waves subsiding to calm to 2 feet, then building to 1 to
3 feet.
.FRIDAY...Southwest winds 15 to 25 knots increasing to 20 to
30 knots in the afternoon, then diminishing to 15 to 25 knots
late. Waves building to 3 to 5 feet occasionally to 7 feet, then
subsiding to 2 to 4 feet.
.FRIDAY NIGHT...West winds 10 to 20 knots backing southwest after
midnight. A slight chance of showers after midnight. Waves
subsiding to calm to 2 feet, then building to 1 to 3 feet.
.SATURDAY...West winds 15 to 25 knots. Waves building to 2 to
4 feet.
.SATURDAY NIGHT...West winds 15 to 25 knots. Waves subsiding to
calm to 2 feet.
.SUNDAY...West winds 15 to 25 knots. Waves building to 2 to
4 feet, then subsiding to calm to 2 feet.
.MONDAY...West winds 10 to 20 knots diminishing to 5 to 15 knots.
Waves calm to 2 feet.
$$
LSZ263-112000-
Lake Superior from Saxon Harbor WI to Upper Entrance to Portage
Canal MI 5NM off shore to the US/Canadian border including Isle
Royale National Park-
1000 AM EDT Thu Jun 11 2026
...DENSE FOG ADVISORY IN EFFECT UNTIL 2 PM EDT THIS AFTERNOON...
.REST OF TODAY...Southwest winds 10 to 20 knots. Patchy fog by
late morning. A chance of showers by mid afternoon. Waves 1 to
3 feet.
.TONIGHT...West winds 5 to 15 knots increasing to 15 to 25 knots
after midnight. Showers likely through midnight, then a chance of
showers after midnight. Waves subsiding to calm to 2 feet, then
building to 3 to 5 feet occasionally to 7 feet.
.FRIDAY...Southwest winds 15 to 25 knots increasing to 20 to
30 knots in the afternoon. Waves building to 3 to 6 feet
occasionally to 8 feet.
.FRIDAY NIGHT...West winds 15 to 25 knots becoming southwest
10 to 20 knots after midnight. A slight chance of showers after
midnight. Waves subsiding to 2 to 4 feet.
.SATURDAY...West winds 15 to 25 knots. Waves building to 3 to
5 feet occasionally to 7 feet.
.SATURDAY NIGHT...West winds 10 to 20 knots increasing to 15 to
25 knots after midnight. Waves subsiding to 2 to 4 feet.
.SUNDAY...West winds 15 to 25 knots diminishing to 10 to
20 knots. Waves building to 3 to 6 feet occasionally to 8 feet,
then subsiding to 2 to 4 feet.
.MONDAY...West winds 10 to 20 knots diminishing to 5 to 15 knots.
Waves subsiding to calm to 2 feet.
$$
LSZ264-112000-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
1000 AM EDT Thu Jun 11 2026
...DENSE FOG ADVISORY IN EFFECT UNTIL 2 PM EDT THIS AFTERNOON...
.REST OF TODAY...Southwest winds 5 to 15 knots becoming south
10 to 20 knots late. Patchy fog. A slight chance of showers by
mid afternoon. Waves 1 to 3 feet.
.TONIGHT...Southwest winds 5 to 15 knots becoming west 10 to
20 knots after midnight, then increasing to 15 to 25 knots late.
Showers likely through midnight, then a chance of showers after
midnight. Waves subsiding to calm to 2 feet, then building to
3 to 5 feet occasionally to 7 feet.
.FRIDAY...West winds 15 to 25 knots becoming southwest 20 to
30 knots in the afternoon. Waves building to 3 to 6 feet
occasionally to 8 feet.
.FRIDAY NIGHT...West winds 15 to 25 knots becoming southwest
10 to 20 knots after midnight. Waves subsiding to 2 to 4 feet.
.SATURDAY...Southwest winds 15 to 25 knots veering west by mid
afternoon. Waves building to 3 to 5 feet occasionally to 7 feet.
.SATURDAY NIGHT...West winds 10 to 20 knots. Waves subsiding to
2 to 4 feet.
.SUNDAY...West winds 15 to 25 knots diminishing to 10 to
20 knots. Waves building to 3 to 6 feet occasionally to 8 feet,
then subsiding to 2 to 4 feet.
.MONDAY...West winds 10 to 20 knots diminishing to 5 to 15 knots.
Waves subsiding to calm to 2 feet.
$$
LSZ265-112000-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
1000 AM EDT Thu Jun 11 2026
.REST OF TODAY...Southwest winds 5 to 15 knots backing south in
the afternoon, then becoming southeast 10 to 20 knots late. A
chance of showers by mid afternoon. Waves calm to 2 feet.
.TONIGHT...North winds 10 to 20 knots becoming northwest 15 to
25 knots after midnight, then backing west late. A slight chance
of thunderstorms through midnight. Showers. Waves building to
2 to 4 feet.
.FRIDAY...West winds 15 to 25 knots increasing to 20 to 30 knots
late. A chance of showers by mid afternoon. Waves subsiding to
1 to 3 feet, then building to 2 to 4 feet.
.FRIDAY NIGHT...West winds 10 to 20 knots becoming southwest
15 to 25 knots after midnight. Waves subsiding to calm to 2 feet.
.SATURDAY...West winds 15 to 25 knots. A slight chance of
showers. Waves building to 2 to 4 feet.
.SATURDAY NIGHT...West winds 15 to 25 knots. Waves subsiding to
1 to 3 feet.
.SUNDAY...West winds 20 to 30 knots. Waves building to 2 to
4 feet, then subsiding to 1 to 3 feet.
.MONDAY...West winds 10 to 20 knots backing southwest. Waves
subsiding to calm to 2 feet.
$$
LSZ266-112000-
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-
1000 AM EDT Thu Jun 11 2026
...DENSE FOG ADVISORY IN EFFECT UNTIL 2 PM EDT THIS AFTERNOON...
.REST OF TODAY...Southwest winds 5 to 15 knots becoming southeast
10 to 20 knots late. Patchy fog. A slight chance of showers by
mid afternoon. Waves 1 to 3 feet subsiding to calm to 2 feet.
.TONIGHT...East winds 10 to 20 knots becoming northwest 15 to
25 knots after midnight, then backing west late. A slight chance
of thunderstorms through midnight. Showers. Waves building to
3 to 5 feet occasionally to 7 feet.
.FRIDAY...West winds 15 to 25 knots. A chance of showers and a
slight chance of thunderstorms by mid afternoon. Waves building
to 3 to 6 feet occasionally to 8 feet.
.FRIDAY NIGHT...Southwest winds 15 to 25 knots. Waves subsiding
to 2 to 4 feet.
.SATURDAY...Southwest winds 15 to 25 knots becoming west 10 to
20 knots by mid afternoon. A chance of showers. Waves building to
3 to 5 feet occasionally to 7 feet, then subsiding to 2 to
4 feet.
.SATURDAY NIGHT...West winds 10 to 20 knots increasing to 15 to
25 knots after midnight. Waves subsiding to 1 to 3 feet, then
building to 2 to 4 feet.
.SUNDAY...West winds 15 to 25 knots. Waves building to 3 to
5 feet occasionally to 7 feet, then subsiding to 2 to 4 feet.
.MONDAY...West winds 10 to 20 knots backing southwest. Waves
subsiding to calm to 2 feet.
$$
LSZ267-112000-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
1000 AM EDT Thu Jun 11 2026
...DENSE FOG ADVISORY IN EFFECT UNTIL 2 PM EDT THIS AFTERNOON...
.REST OF TODAY...West winds 10 to 20 knots becoming southeast
5 to 15 knots in the afternoon, then backing east late. Areas of
dense fog by late morning, then patchy fog by mid afternoon.
Waves calm to 2 feet.
.TONIGHT...East winds 10 to 20 knots becoming west 20 to 30 knots
after midnight. Showers and a slight chance of thunderstorms
through midnight, then a chance of showers after midnight. Waves
building to 3 to 5 feet occasionally to 7 feet.
.FRIDAY...West winds 20 to 30 knots diminishing to 5 to 15 knots.
A chance of showers and a slight chance of thunderstorms by mid
afternoon. Waves subsiding to 2 to 4 feet.
.FRIDAY NIGHT...Southwest winds 5 to 15 knots increasing to 15 to
25 knots after midnight. Waves 2 to 4 feet.
.SATURDAY...Southwest winds 15 to 25 knots becoming west 5 to
15 knots by mid afternoon. A chance of showers. A slight chance
of thunderstorms by mid afternoon. Waves subsiding to 1 to
3 feet.
.SATURDAY NIGHT...West winds 5 to 15 knots increasing to 10 to
20 knots after midnight. Waves 1 to 3 feet.
.SUNDAY...West winds 15 to 25 knots diminishing to 10 to
20 knots. Waves building to 2 to 4 feet.
.MONDAY...West winds 10 to 20 knots backing southwest. Waves
subsiding to calm to 2 feet.
$$
LSZ261-112000-
MAFOR 1115/
Superior West 12520 11530 11510 11520 12630 11530. A chance of
showers this afternoon and tonight. Waves 1 to 2 feet this
afternoon. Waves 1 to 3 feet building to 2 to 4 feet tonight.
Waves 2 to 4 feet Friday morning.
Superior North Central 11520 12420 11516 11726 13630. Waves 1 to
3 feet this afternoon. Waves 1 to 3 feet building to 2 to 4 feet
tonight. Waves 3 to 5 feet Friday morning.
Superior South Central 11510 11310 19314 11210 11116 11836 11636
12630. Waves 2 feet or less this afternoon. Waves 1 to 3 feet
building to 2 to 4 feet tonight. Waves 2 to 4 feet Friday
morning.
Superior East 11500 11300 11210 19214 11216 11136 11636 12630.
Waves 1 to 2 feet this afternoon. Waves 1 to 3 feet building to 3
to 5 feet tonight. Waves 3 to 5 feet Friday morning.
$$
WFO MQT
Experimental modernized open lake forecast is available online at
weather.gov/mqt/glftable
Graphical marine forecasts are available online at:
weather.gov/greatlakes
Other Information
Great Lakes Water Levels and Forecasts - Provided by USACE
GLERL - NOAA Great Lakes Forecast System