Marine Weather, NWS WFO Duluth, MN

Nearshore Forecast

826
FZUS53 KDLH 232033
NSHDLH

Nearshore Marine Forecast
National Weather Service Duluth MN
333 PM CDT Wed Oct 23 2024

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.

LSZ140-141-240415-
Grand Portage to Grand Marais MN-
Grand Marais to Taconite Harbor MN-
333 PM CDT Wed Oct 23 2024

.TONIGHT...West wind 15 to 20 knots. Gusts up to 20 knots
increasing to 25 knots late in the night. Mostly clear until
early morning then becoming mostly cloudy. Waves 1 to 3 feet
building to 2 to 4 feet late in the night.
.THURSDAY...Southwest wind 15 to 20 knots with gusts to around
25 knots. Chance of rain showers in the afternoon. Waves 2 to
4 feet. A small craft advisory may be needed.
.THURSDAY NIGHT...Southwest wind 10 to 15 knots. Gusts up to
25 knots decreasing to 20 knots in the late evening and
overnight. Rain showers in the evening, then chance of rain
showers after midnight. Waves 2 to 4 feet.
.FRIDAY...Northwest 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 afternoon. Waves 1 to 2 feet.

$$

LSZ142-143-240415-
Taconite Harbor to Silver Bay Harbor MN-
Silver Bay Harbor to Two Harbors MN-
333 PM CDT Wed Oct 23 2024

.TONIGHT...Southwest wind 10 to 15 knots. Gusts up to 20 knots
after midnight. Mostly clear until early morning then becoming
mostly cloudy. Waves 1 to 2 feet.
.THURSDAY...Southwest wind 10 to 15 knots with gusts to around
20 knots. Chance of rain showers in the afternoon. Waves 1 to
3 feet.
.THURSDAY NIGHT...Southwest wind 5 to 10 knots becoming west with
gusts to around 20 knots early in the morning. Rain showers in
the evening, then rain showers likely after midnight. Waves 1 to
2 feet.
.FRIDAY...Northwest wind 10 to 15 knots. Gusts up to 20 knots
increasing to 25 knots in the afternoon. Sunny. Waves 1 to
2 feet.

$$

LSZ144-240415-
Two Harbors to Duluth MN-
333 PM CDT Wed Oct 23 2024

.TONIGHT...Southwest wind 10 to 15 knots. Gusts up to 20 knots
after midnight. Mostly clear until early morning then becoming
mostly cloudy. Waves 1 to 2 feet.
.THURSDAY...Southwest wind 10 to 15 knots easing to 10 knots late
in the afternoon. Gusts up to 20 knots. Rain showers in the
afternoon. Waves 1 to 2 feet.
.THURSDAY NIGHT...Southwest wind 5 to 10 knots becoming west
early in the morning. Rain showers in the evening, then rain
showers likely after midnight. Waves 1 foot or less.
.FRIDAY...Northwest wind 10 to 15 knots. Gusts up to 25 knots.
Sunny. Waves 1 to 2 feet.

$$

LSZ145-240415-
Duluth MN to Port Wing WI-
333 PM CDT Wed Oct 23 2024

...SMALL CRAFT ADVISORY IN EFFECT FROM LATE TONIGHT THROUGH
THURSDAY AFTERNOON...

.TONIGHT...Southwest wind 10 to 15 knots. Gusts up to 20 knots
after midnight. Mostly clear until early morning then becoming
mostly cloudy. Waves 1 to 2 feet.
.THURSDAY...Southwest wind 10 to 15 knots. Gusts up to 20 knots
increasing to 25 knots in the late morning and early afternoon,
then decreasing to 20 knots late in the afternoon. Rain showers
in the afternoon. Waves 1 to 2 feet.
.THURSDAY NIGHT...Southwest wind 5 to 10 knots with gusts to
around 20 knots becoming west early in the morning. Rain showers
in the evening, then slight chance of rain showers after
midnight. Waves 1 to 2 feet.
.FRIDAY...West wind 10 to 15 knots. Gusts up to 20 knots
increasing to 25 knots late in the afternoon. Sunny. Waves 1 to
3 feet.

$$

LSZ146-240415-
Port Wing to Sand Island WI-
333 PM CDT Wed Oct 23 2024

...SMALL CRAFT ADVISORY IN EFFECT FROM LATE TONIGHT THROUGH
THURSDAY AFTERNOON...

.TONIGHT...Southwest wind 10 to 15 knots. Gusts up to 20 knots
increasing to 25 knots late in the night. Mostly clear until
early morning then becoming mostly cloudy. Waves 1 to 3 feet.
.THURSDAY...Southwest wind 10 to 15 knots with gusts to around
25 knots easing to 10 knots with gusts to around 20 knots late in
the afternoon. Rain showers likely in the afternoon. Waves 1 to
3 feet.
.THURSDAY NIGHT...Southwest wind 10 to 15 knots. Gusts up to
20 knots in the late evening and overnight. Rain showers in the
evening, then rain showers likely after midnight. Waves 1 to
2 feet.
.FRIDAY...West wind 15 to 20 knots with gusts to around 25 knots.
Sunny. Waves 1 to 2 feet building to 2 to 4 feet in the late
morning and afternoon.

$$

LSZ147-240415-
Sand Island to Bayfield WI-
333 PM CDT Wed Oct 23 2024

...SMALL CRAFT ADVISORY IN EFFECT FROM LATE TONIGHT THROUGH
THURSDAY AFTERNOON...

.TONIGHT...Southwest wind 10 to 15 knots with gusts to around
20 knots. Mostly clear until early morning then becoming mostly
cloudy. Waves 1 to 2 feet.
.THURSDAY...Southwest wind 10 to 15 knots with gusts to around
25 knots easing to 10 knots with gusts to around 20 knots late in
the afternoon. Rain showers likely in the afternoon. Waves 1 to
3 feet.
.THURSDAY NIGHT...Southwest wind 10 to 15 knots. Gusts up to
20 knots in the late evening and overnight. Rain showers in the
evening, then rain showers likely after midnight. Waves 1 to
2 feet.
.FRIDAY...West wind 15 to 20 knots with gusts to around 25 knots.
Sunny. Waves 1 to 3 feet building to 2 to 4 feet in the late
morning and afternoon.

$$

LSZ150-240415-
Outer Apostle Islands Beyond 5 NM from Mainland-
333 PM CDT Wed Oct 23 2024

...SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY AFTERNOON...

.TONIGHT...Southwest wind 15 to 20 knots. Gusts up to 20 knots
increasing to 25 knots late in the night. Mostly clear. Waves
1 to 3 feet.
.THURSDAY...Southwest wind 15 to 20 knots. Gusts up to 25 knots
decreasing to 20 knots late in the afternoon. Rain showers likely
in the afternoon. Waves 2 to 4 feet subsiding to 1 to 3 feet late
in the afternoon.
.THURSDAY NIGHT...Southwest wind 10 to 15 knots with gusts to
around 20 knots. Rain showers in the evening, then chance of rain
showers after midnight. Waves 1 to 3 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 afternoon. Waves 2 to 4 feet. A
small craft advisory may be needed.

$$

LSZ121-240415-
Chequamegon Bay-Bayfield to Oak Point WI-
333 PM CDT Wed Oct 23 2024

...SMALL CRAFT ADVISORY IN EFFECT FROM LATE TONIGHT THROUGH
THURSDAY AFTERNOON...

.TONIGHT...Southwest wind 10 to 15 knots. Gusts up to 20 knots
after midnight. Partly cloudy. Waves 1 foot or less.
.THURSDAY...Southwest wind 10 to 15 knots. Gusts up to 20 knots
increasing to 25 knots in the late morning and early afternoon,
then decreasing to 20 knots late in the afternoon. Rain showers
likely in the afternoon. Waves 1 foot or less.
.THURSDAY NIGHT...Southwest wind 5 to 10 knots. Rain showers in
the evening, then 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 afternoon. Sunny. Waves 1 foot or
less.

$$

LSZ148-240415-
Oak Point to Saxon Harbor WI-
333 PM CDT Wed Oct 23 2024

...SMALL CRAFT ADVISORY IN EFFECT FROM LATE TONIGHT THROUGH
THURSDAY AFTERNOON...

.TONIGHT...Southwest wind 10 to 15 knots. Gusts up to 20 knots
after midnight. Mostly clear. Waves 1 to 2 feet.
.THURSDAY...Southwest wind 10 to 15 knots. Gusts up to 25 knots
decreasing to 20 knots late in the afternoon. Chance of rain
showers in the afternoon. Waves 1 to 2 feet.
.THURSDAY NIGHT...Southwest wind 10 to 15 knots. Gusts up to
20 knots after midnight. Rain showers in the evening, then chance
of rain showers after midnight. Waves 1 to 2 feet.
.FRIDAY...West wind 10 to 15 knots. Gusts up to 20 knots
increasing to 25 knots late in the afternoon. Sunny. Waves 1 to
3 feet.

$$

Graphical marine forecasts are available online at:
weather.gov/greatlakes

JDS

Open Waters Forecast

899
FZUS63 KMQT 240156
GLFLS

Open Lake Forecast for Lake Superior
National Weather Service Marquette MI
956 PM EDT Wed Oct 23 2024

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...A 30.2 inch high pressure currently centered over Iowa
has expanded across the south shore of Lake Superior and will
continue east overnight. As the high anchors over the Lower Great
Lakes Thursday, a 29.9 inch trough will settle east, extending
from northern Ontario across Minnesota to the southern Plains.
This trough will steam across Lake Superior Thursday night and
Friday morning. In its wake, a 30.3 inch high pressure over the
northern Plains Friday morning will build to 30.5 inches while
shifting east, reaching the Upper Great Lakes Saturday night. As
the high shifts to the Lower Great Lakes Sunday, a 29.6 inch
trough will take shape over the Canadian Prairies and western
Dakotas. Weak ridging, averaging 30.0 inches remains over Lake
Superior Monday.

LSZ162-241000-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
956 PM EDT Wed Oct 23 2024 /856 PM CDT Wed Oct 23 2024/

.REST OF TONIGHT...West winds 15 to 25 knots backing southwest
after midnight. Waves 2 to 4 feet.
.THURSDAY...Southwest winds 15 to 25 knots diminishing to 10 to
20 knots late. A chance of showers by mid afternoon. Waves 2 to
4 feet.
.THURSDAY NIGHT...Southwest winds 10 to 20 knots veering west
late. A chance of showers. Waves subsiding to 1 to 3 feet.
.FRIDAY...Northwest winds 15 to 25 knots becoming west 20 to
30 knots by mid afternoon. A slight chance of showers by mid
afternoon. Waves building to 3 to 5 feet occasionally to 7 feet.
.FRIDAY NIGHT...Northwest winds 15 to 25 knots. Waves subsiding
to 2 to 4 feet.
.SATURDAY...West winds 10 to 20 knots. Waves subsiding to 1 to
3 feet.
.SATURDAY NIGHT...West winds 5 to 15 knots backing southeast
after midnight. Waves subsiding to calm to 2 feet.
.SUNDAY...Southeast winds 10 to 20 knots becoming south 15 to
25 knots. Waves building to 2 to 4 feet.
.MONDAY...South winds 15 to 25 knots diminishing to 10 to
20 knots. Waves subsiding to calm to 2 feet.

$$

LSZ263-241000-
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-
956 PM EDT Wed Oct 23 2024

.REST OF TONIGHT...West winds 10 to 20 knots becoming southwest
15 to 25 knots after midnight, then diminishing to 10 to 20 knots
late. Waves 3 to 5 feet occasionally to 7 feet.
.THURSDAY...Southwest winds 10 to 20 knots. A chance of showers
by mid afternoon. Waves subsiding to 2 to 4 feet.
.THURSDAY NIGHT...Southwest winds 15 to 25 knots becoming west
10 to 20 knots late. Showers through midnight, then a chance of
showers after midnight. Waves building to 3 to 5 feet
occasionally to 7 feet, then subsiding to 2 to 4 feet.
.FRIDAY...Northwest winds 15 to 25 knots becoming west 20 to
30 knots by mid afternoon. A slight chance of showers. Waves
building to 4 to 7 feet occasionally to 9 feet.
.FRIDAY NIGHT...Northwest winds 20 to 30 knots. Waves subsiding
to 3 to 5 feet occasionally to 7 feet.
.SATURDAY...Northwest winds 15 to 25 knots backing west by mid
afternoon. Waves subsiding to 2 to 4 feet.
.SATURDAY NIGHT...West winds 10 to 20 knots becoming south 5 to
15 knots after midnight. Waves subsiding to calm to 2 feet.
.SUNDAY...Southeast winds 10 to 20 knots becoming south 15 to
25 knots. Waves building to 2 to 4 feet.
.MONDAY...South winds 15 to 25 knots. Waves subsiding to 1 to
3 feet.

$$

LSZ264-241000-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
956 PM EDT Wed Oct 23 2024

.REST OF TONIGHT...West winds 10 to 20 knots backing southwest
late. Waves 3 to 5 feet occasionally to 7 feet.
.THURSDAY...Southwest winds 10 to 20 knots. A slight chance of
showers by mid afternoon. Waves 3 to 6 feet occasionally to 8
feet, then subsiding to 2 to 4 feet.
.THURSDAY NIGHT...Southwest winds 15 to 25 knots becoming west
10 to 20 knots late. Showers. Waves building to 3 to 6 feet
occasionally to 8 feet.
.FRIDAY...Northwest winds 15 to 25 knots becoming west 20 to
30 knots by mid afternoon. A chance of showers. Waves building to
4 to 7 feet occasionally to 9 feet.
.FRIDAY NIGHT...Northwest winds 20 to 30 knots. A chance of rain
showers through midnight. Waves 4 to 7 feet occasionally to
9 feet.
.SATURDAY...Northwest winds 15 to 25 knots backing west by mid
afternoon. Waves subsiding to 3 to 5 feet occasionally to 7 feet.
.SATURDAY NIGHT...Northwest winds 10 to 20 knots becoming north
5 to 15 knots after midnight. Waves subsiding to calm to 2 feet.
.SUNDAY...Southeast winds 10 to 20 knots becoming south 15 to
25 knots. Waves building to 3 to 5 feet occasionally to 7 feet.
.MONDAY...South winds 15 to 25 knots. A chance of showers. Waves
building to 3 to 6 feet occasionally to 8 feet, then subsiding to
2 to 4 feet.

$$

LSZ265-241000-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
956 PM EDT Wed Oct 23 2024

.REST OF TONIGHT...West winds 15 to 25 knots backing southwest
after midnight, then diminishing to 10 to 20 knots late. Waves
2 to 4 feet subsiding to 1 to 3 feet.
.THURSDAY...Southwest winds 10 to 20 knots. Waves subsiding to
calm to 2 feet.
.THURSDAY NIGHT...Southwest winds 10 to 20 knots increasing to
15 to 25 knots late. Showers. Waves building to 1 to 3 feet.
.FRIDAY...West winds 15 to 25 knots increasing to 20 to 30 knots
by mid afternoon. A chance of showers. Waves building to 3 to
5 feet occasionally to 7 feet.
.FRIDAY NIGHT...Northwest winds of 20 to 30 knots with a few gale
force gusts to 35 knots diminishing to 20 to 30 knots after
midnight. A chance of rain showers. Waves 3 to 5 feet occasionally
to 7 feet.
.SATURDAY...Northwest winds 20 to 30 knots backing west by mid
afternoon. A chance of rain showers. Waves subsiding to 1 to
3 feet.
.SATURDAY NIGHT...West winds 10 to 20 knots diminishing to 5 to
15 knots after midnight. Waves subsiding to calm to 2 feet.
.SUNDAY...Southeast winds 10 to 20 knots becoming south 15 to
25 knots. Waves calm to 2 feet.
.MONDAY...South winds 20 to 30 knots diminishing to 15 to
25 knots. A chance of showers. Waves building to 2 to 4 feet,
then subsiding to calm to 2 feet.

$$

LSZ266-241000-
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-
956 PM EDT Wed Oct 23 2024

.REST OF TONIGHT...West winds 15 to 25 knots becoming southwest
10 to 20 knots late. Waves 3 to 5 feet occasionally to 7 feet.
.THURSDAY...Southwest winds 15 to 25 knots diminishing to 10 to
20 knots in the afternoon, then backing south late. Waves
subsiding to 2 to 4 feet.
.THURSDAY NIGHT...Southwest winds 15 to 25 knots. Showers. Waves
building to 3 to 5 feet occasionally to 7 feet.
.FRIDAY...West winds 15 to 25 knots becoming northwest 20 to
30 knots by mid afternoon. A chance of showers. Waves building to
5 to 8 feet occasionally to 10 feet.
.FRIDAY NIGHT...Northwest 20 to 30 knots with a few gale force
gusts to 35 knots diminishing to 20 to 30 knots after midnight.
Showers likely. Waves 5 to 8 feet occasionally to 10 feet.
.SATURDAY...Northwest winds 20 to 30 knots diminishing to 15 to
25 knots by mid afternoon. Showers likely through early
afternoon, then a chance of showers by mid afternoon. Waves
subsiding to 4 to 7 feet occasionally to 9 feet.
.SATURDAY NIGHT...Northwest winds 10 to 20 knots diminishing to
5 to 15 knots after midnight. A chance of showers through
midnight. Waves subsiding to 1 to 3 feet.
.SUNDAY...Southeast winds 10 to 20 knots becoming south 15 to
25 knots. Waves subsiding to calm to 2 feet, then building to
3 to 5 feet occasionally to 7 feet.
.MONDAY...South winds 20 to 30 knots. A chance of showers. Waves
building to 4 to 7 feet occasionally to 9 feet, then subsiding to
2 to 4 feet.

$$

LSZ267-241000-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
956 PM EDT Wed Oct 23 2024

.REST OF TONIGHT...West winds 10 to 20 knots increasing to 15 to
25 knots after midnight, then backing southwest late. Isolated
rain showers by late evening. Waves 3 to 6 feet occasionally to
8 feet subsiding to 2 to 4 feet.
.THURSDAY...Southwest winds 15 to 25 knots backing south in the
afternoon. Waves subsiding to 1 to 3 feet.
.THURSDAY NIGHT...South winds 15 to 25 knots becoming southwest
10 to 20 knots after midnight, then backing south late. Showers.
Waves building to 3 to 5 feet occasionally to 7 feet, then
subsiding to 1 to 3 feet.
.FRIDAY...West winds 15 to 25 knots becoming northwest 20 to
30 knots by mid afternoon. Showers likely through early
afternoon, then a chance of showers by mid afternoon. Waves
building to 5 to 8 feet occasionally to 10 feet.
.FRIDAY NIGHT...Northwest winds 20 to 30 knots. Showers. Waves
5 to 8 feet occasionally to 10 feet.
.SATURDAY...Northwest winds 20 to 30 knots. Showers through early
afternoon, then a chance of showers by mid afternoon. Waves
subsiding to 4 to 7 feet occasionally to 9 feet.
.SATURDAY NIGHT...Northwest winds 15 to 25 knots diminishing to
10 to 20 knots after midnight. A chance of showers through
midnight. Waves subsiding to 2 to 4 feet.
.SUNDAY...Southeast winds 10 to 20 knots becoming south 15 to
25 knots. Waves subsiding to calm to 2 feet, then building to
2 to 4 feet.
.MONDAY...South winds 20 to 30 knots. A chance of showers, then
showers likely. Waves building to 3 to 5 feet occasionally to
7 feet, then subsiding to 2 to 4 feet.

$$
LSZ261-241000-
MAFOR 2403/
Superior West 13530 14520 11536. Waves 2 to 4 feet.

Superior North Central 12630 14530 11520 11536. Waves 3 to 6
feet.

Superior South Central 11620 14520 11510 11410 11526. Waves 2 to
4 feet subsiding to 1 to 3 feet overnight through Thursday
evening.

Superior East 12620 14520 11420 11430. Waves 2 to 5 feet.

$$

JSS

Experimental modernized open lake forecast is available online at
weather.gov/mqt/glftable

Graphical marine forecasts are available online at:
weather.gov/greatlakes

Beach Hazards

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