659 

FZUS53 KDLH 152201
NSHDLH

Nearshore Marine Forecast
National Weather Service Duluth MN
500 PM CDT Wed Apr 15 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.

LSZ140-160400-
Grand Portage to Grand Marais MN-
500 PM CDT Wed Apr 15 2026

...DENSE FOG ADVISORY IN EFFECT UNTIL 10 AM CDT THURSDAY...

.TONIGHT...Northeast wind 5 knots becoming west after midnight.
Patchy fog in the evening, then areas of dense fog after
midnight. Waves 1 foot or less.
.THURSDAY...Southwest wind 5 knots becoming south late in the
afternoon. Areas of dense fog in the morning. Waves 1 foot or
less.
.THURSDAY NIGHT...Northeast wind 10 to 15 knots. Gusts up to
20 knots after midnight. Slight chance of rain after midnight.
Waves 1 to 2 feet.
.FRIDAY...Northeast wind 10 to 15 knots. Gusts up to 20 knots in
the morning then 20 knots late in the afternoon. Rain likely and
slight chance of thunderstorms in the afternoon. Waves 1 to
3 feet.

Note...Wave height forecasts are for ice free areas.

$$

LSZ141-160400-
Grand Marais to Taconite Harbor MN-
500 PM CDT Wed Apr 15 2026

...DENSE FOG ADVISORY IN EFFECT UNTIL 10 AM CDT THURSDAY...

.TONIGHT...Northeast wind 5 knots early in the evening becoming
variable 10 knots or less. Patchy fog in the evening, then areas
of dense fog after midnight. Waves 1 foot or less.
.THURSDAY...Variable winds 10 knots or less becoming south
5 knots in the late morning and early afternoon, then becoming
east late in the afternoon. Areas of dense fog in the morning.
Waves 1 foot or less.
.THURSDAY NIGHT...Northeast wind 10 to 15 knots. Gusts up to
20 knots after midnight. Patchy fog in the evening. Slight chance
of rain after midnight. Waves 1 to 2 feet.
.FRIDAY...Northeast wind 10 to 15 knots with gusts to around
20 knots becoming north late in the afternoon. Rain likely and
chance of thunderstorms in the afternoon. Waves 1 to 2 feet.

Note...Wave height forecasts are for ice free areas.

$$

LSZ142-160400-
Taconite Harbor to Silver Bay Harbor MN-
500 PM CDT Wed Apr 15 2026

...DENSE FOG ADVISORY IN EFFECT UNTIL 10 AM CDT THURSDAY...

.TONIGHT...Variable winds 10 knots or less. Patchy fog in the
evening. Areas of dense fog after midnight, then widespread dense
fog late in the night. Waves 1 foot or less.
.THURSDAY...Variable winds 10 knots or less becoming east 5 to
10 knots in the late morning and afternoon. Patchy dense fog in
the morning. Waves 1 foot or less.
.THURSDAY NIGHT...Northeast wind 10 to 15 knots. Patchy fog in
the evening. Waves 1 to 2 feet.
.FRIDAY...Northeast wind 10 to 15 knots. Rain likely and chance
of thunderstorms in the afternoon. Waves 1 to 2 feet.

Note...Wave height forecasts are for ice free areas.

$$

LSZ143-160400-
Silver Bay Harbor to Two Harbors MN-
500 PM CDT Wed Apr 15 2026

...DENSE FOG ADVISORY IN EFFECT UNTIL 10 AM CDT THURSDAY...

.TONIGHT...Northeast wind 5 knots until early morning becoming
variable 10 knots or less. Patchy fog in the evening. Areas of
dense fog after midnight, then widespread dense fog late in the
night. Waves 1 foot or less.
.THURSDAY...Variable winds 10 knots or less becoming northeast
10 to 15 knots. Areas of dense fog in the morning. Waves 1 foot
or less.
.THURSDAY NIGHT...Northeast wind 10 to 15 knots. Gusts up to
20 knots in the evening then 20 knots early in the morning.
Patchy fog in the evening. Waves 1 to 2 feet.
.FRIDAY...Northeast wind 10 to 15 knots. Rain and chance of
thunderstorms in the afternoon. Waves 1 to 2 feet.

Note...Wave height forecasts are for ice free areas.

$$

LSZ144-160400-
Two Harbors to Duluth MN-
500 PM CDT Wed Apr 15 2026

...DENSE FOG ADVISORY IN EFFECT UNTIL 10 AM CDT THURSDAY...

.TONIGHT...Northeast wind 5 knots until early morning becoming
variable 10 knots or less. Patchy fog late in the evening.
Widespread dense fog after midnight. Waves 1 foot or less.
.THURSDAY...Variable winds 10 knots or less becoming northeast
10 to 15 knots. Widespread dense fog in the morning. Waves 1 to
2 feet.
.THURSDAY NIGHT...Northeast wind 10 to 15 knots. Gusts up to
20 knots in the evening. Patchy fog in the evening. Waves 1 to
2 feet.
.FRIDAY...Northeast wind 10 to 15 knots becoming north with gusts
to around 20 knots late in the afternoon. Slight chance of rain
in the morning, then rain and chance of thunderstorms in the
afternoon. Waves 1 to 2 feet.

Note...Wave height forecasts are for ice free areas.

$$

LSZ145-160400-
Duluth MN to Port Wing WI-
500 PM CDT Wed Apr 15 2026

...DENSE FOG ADVISORY IN EFFECT UNTIL 10 AM CDT THURSDAY...

.TONIGHT...Northeast wind 5 knots until early morning becoming
variable 10 knots or less. Patchy fog late in the evening. Areas
of dense fog after midnight, then widespread dense fog late in
the night. Waves 1 foot or less.
.THURSDAY...Northeast wind 10 to 15 knots. Widespread dense fog
in the morning. Waves 1 to 2 feet.
.THURSDAY NIGHT...Northeast wind 10 to 15 knots. Gusts up to
20 knots in the evening. Patchy fog in the evening. Waves 1 to
2 feet.
.FRIDAY...Northeast wind 5 to 10 knots becoming north 10 to
15 knots with gusts to around 20 knots late in the afternoon.
Slight chance of rain in the morning, then rain and chance of
thunderstorms in the afternoon. Waves 1 to 3 feet.

Note...Wave height forecasts are for ice free areas.

$$

LSZ146-160400-
Port Wing to Sand Island WI-
500 PM CDT Wed Apr 15 2026

...DENSE FOG ADVISORY IN EFFECT UNTIL 10 AM CDT THURSDAY...

.TONIGHT...Northeast wind 5 knots until early morning becoming
variable 10 knots or less. Patchy fog late in the evening. Areas
of dense fog after midnight. Waves 1 foot or less.
.THURSDAY...Variable winds 10 knots or less becoming northeast
10 to 15 knots. Areas of dense fog in the morning. Waves 1 to
2 feet.
.THURSDAY NIGHT...Northeast wind 10 to 15 knots. Partly cloudy in
the evening then becoming mostly cloudy. Waves 1 to 2 feet.
.FRIDAY...Northeast wind 5 to 10 knots becoming north late in the
afternoon. Rain and chance of thunderstorms in the afternoon.
Waves 1 to 3 feet.

Note...Wave height forecasts are for ice free areas.

$$

LSZ147-160400-
Sand Island to Bayfield WI-
500 PM CDT Wed Apr 15 2026

...DENSE FOG ADVISORY IN EFFECT UNTIL 10 AM CDT THURSDAY...

.TONIGHT...Northeast wind 5 knots early in the evening becoming
variable 10 knots or less. Patchy fog late in the evening. Areas
of dense fog after midnight, then widespread dense fog late in
the night. Waves 1 foot or less.
.THURSDAY...Variable winds 10 knots or less becoming east 5 to
10 knots in the late morning and afternoon. Areas of dense fog in
the morning. Waves 1 foot or less.
.THURSDAY NIGHT...East wind 5 to 10 knots. Partly cloudy in the
evening then becoming mostly cloudy. Waves 1 foot or less.
.FRIDAY...East wind 5 to 10 knots becoming northwest late in the
afternoon. Rain likely and chance of thunderstorms in the
afternoon. Waves 1 to 3 feet.

Note...Wave height forecasts are for ice free areas.

$$

LSZ150-160400-
Outer Apostle Islands Beyond 5 NM from Mainland-
500 PM CDT Wed Apr 15 2026

...DENSE FOG ADVISORY IN EFFECT UNTIL 10 AM CDT THURSDAY...

.TONIGHT...Northeast wind 5 knots. Patchy fog in the evening.
Areas of dense fog after midnight, then widespread dense fog late
in the night. Waves 1 foot or less.
.THURSDAY...East wind 5 knots rising to 5 to 10 knots. Areas of
dense fog in the morning. Waves 1 foot or less.
.THURSDAY NIGHT...East wind 5 to 10 knots. Patchy fog in the
evening. Waves 1 to 2 feet.
.FRIDAY...East wind 5 to 10 knots with gusts to around 20 knots
becoming north 10 to 15 knots with gusts to around 20 knots late
in the afternoon. Rain likely and slight chance of thunderstorms
in the afternoon. Waves 1 to 3 feet.

Note...Wave height forecasts are for ice free areas.

$$

LSZ148-160400-
Oak Point to Saxon Harbor WI-
500 PM CDT Wed Apr 15 2026

...DENSE FOG ADVISORY IN EFFECT UNTIL 10 AM CDT THURSDAY...

.TONIGHT...Northeast wind 5 knots early in the evening becoming
variable 10 knots or less. Patchy fog late in the evening.
Widespread dense fog after midnight. Waves 1 foot or less.
.THURSDAY...Variable winds 10 knots or less becoming east 5 to
10 knots in the late morning and afternoon. Widespread dense fog
in the morning. Waves 1 foot or less.
.THURSDAY NIGHT...Northeast wind 5 knots becoming southeast with
gusts to around 20 knots after midnight, then becoming south
10 to 15 knots with gusts to around 25 knots early in the
morning. Partly cloudy. Waves 1 foot or less.
.FRIDAY...South wind 10 to 15 knots with gusts to around 25 knots
becoming southwest with gusts to around 20 knots late in the
afternoon. Rain likely and chance of thunderstorms in the
afternoon. Waves 1 to 2 feet.

Note...Wave height forecasts are for ice free areas.

$$

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

WFO DLH






046 

FZUS53 KMKX 152210
NSHMKX

Nearshore Marine Forecast
National Weather Service Milwaukee/Sullivan WI
510 PM CDT Wed Apr 15 2026

For waters within five nautical miles of shore on Lake Michigan

LMZ643-160400-
Sheboygan to Port Washington WI-
510 PM CDT Wed Apr 15 2026

...DENSE FOG ADVISORY IN EFFECT UNTIL 7 AM CDT THURSDAY...

.TONIGHT...North wind 5 to 10 knots veering east late in the
evening, then backing northeast after midnight becoming northeast
5 to 10 knots early in the morning. Patchy dense fog through
around midnight. Areas of dense fog after midnight. showers
through around midnight. Chance of thunderstorms through the
night. Chance of showers after midnight. Waves around 1 foot.
.THURSDAY...North wind 10 to 15 knots becoming northeast 5 to
10 knots late in the afternoon. Chance of showers and slight
chance of thunderstorms in the morning. areas of dense fog in the
morning, then patchy fog in the afternoon. Waves around 1 foot.
.THURSDAY NIGHT...East wind 5 to 10 knots veering south late in
the evening, then becoming south 5 to 10 knots after midnight.
Patchy fog through around midnight. Waves around 1 foot.
.FRIDAY...South wind 10 to 15 knots rising to 15 to 20 knots
early in the afternoon, then becoming 15 to 25 knots late in the
afternoon. Slight chance of showers in the afternoon. Waves 1 to
2 feet building to 3 to 5 feet in the afternoon.

$$
LMZ644-160400-
Port Washington to North Point Light WI-
510 PM CDT Wed Apr 15 2026

...DENSE FOG ADVISORY IN EFFECT UNTIL 7 AM CDT THURSDAY...

.TONIGHT...Southeast wind 5 to 10 knots backing northeast late in
the evening, then veering southeast after midnight backing north
early in the morning. Patchy dense fog until early morning. Areas
of dense fog early in the morning. showers through around
midnight. Chance of thunderstorms through the night. Chance of
showers after midnight. Waves around 1 foot.
.THURSDAY...North wind 5 to 10 knots rising to 10 to 15 knots
early in the afternoon, then becoming northeast 5 to 10 knots
late in the afternoon. Patchy dense fog through the day. chance
of showers and slight chance of thunderstorms in the morning.
Slight chance of showers in the afternoon. Waves around 1 foot.
.THURSDAY NIGHT...East wind 5 to 10 knots veering south after
midnight. Areas of dense fog through around midnight. Waves
around 1 foot.
.FRIDAY...South wind 5 to 10 knots rising to 10 to 15 knots late
in the morning, then becoming southeast 15 to 20 knots in the
afternoon. Slight chance of showers in the afternoon. Waves 1 to
2 feet building to 3 to 4 feet in the afternoon.

$$
LMZ645-160400-
North Point Light to Wind Point WI-
510 PM CDT Wed Apr 15 2026

...DENSE FOG ADVISORY IN EFFECT UNTIL 7 AM CDT THURSDAY...

.TONIGHT...South wind 10 to 15 knots becoming southeast 5 to
10 knots late in the evening, then veering south after midnight
veering west early in the morning. Patchy dense fog through the
night. showers through around midnight. Chance of thunderstorms
through the night. Rain showers likely after midnight. Waves
around 1 foot.
.THURSDAY...Northwest wind 5 to 10 knots veering north 5 to
15 knots late in the morning, then becoming 10 to 15 knots early
in the afternoon easing to 5 to 10 knots late in the afternoon.
Patchy fog through the day. chance of showers and slight chance
of thunderstorms in the morning. Slight chance of showers in the
afternoon. Waves around 1 foot.
.THURSDAY NIGHT...Northeast wind 5 to 10 knots veering south
after midnight. Areas of dense fog through around midnight. Waves
around 1 foot.
.FRIDAY...South wind 5 to 10 knots rising to 10 to 15 knots late
in the morning, then backing southeast 10 to 20 knots early in
the afternoon becoming 15 to 20 knots late in the afternoon.
Mostly cloudy. Waves 1 to 2 feet building to 2 to 4 feet in the
afternoon.

$$
LMZ646-160400-
Wind Point WI to Winthrop Harbor IL-
510 PM CDT Wed Apr 15 2026

...DENSE FOG ADVISORY IN EFFECT UNTIL 7 AM CDT THURSDAY...

.TONIGHT...South wind 10 to 15 knots easing to 5 to 10 knots late
in the evening, then becoming south 5 to 10 knots after midnight
veering southwest early in the morning. Patchy dense fog through
the night. showers through around midnight. Chance of
thunderstorms through the night. Rain showers likely after
midnight. Waves around 1 foot.
.THURSDAY...West wind 5 to 10 knots becoming northwest 10 to
15 knots late in the morning, then veering north early in the
afternoon easing to 5 to 10 knots late in the afternoon. Patchy
fog through the day. chance of showers and slight chance of
thunderstorms in the morning. Slight chance of showers in the
afternoon. Waves around 1 foot.
.THURSDAY NIGHT...Northeast wind 5 to 10 knots veering south
after midnight. Patchy fog through around midnight. Waves around
1 foot.
.FRIDAY...Southeast wind 5 to 10 knots rising to 15 to 20 knots.
Mostly cloudy. Waves 1 to 2 feet building to 2 to 4 feet late in
the afternoon.

$$
See Lake Michigan Open Waters Forecast for Saturday through Monday.







057 

FZUS53 KGRB 152251
NSHGRB

Nearshore Marine Forecast
National Weather Service Green Bay WI
551 PM CDT Wed Apr 15 2026

For waters within five nautical miles of shore on Lake Michigan

LMZ521-522-160400-
Green Bay south of line from Cedar River to Rock Island Passage
and north of a line from Oconto WI to Little Sturgeon Bay WI-
Green Bay south of line from Oconto WI to Little Sturgeon Bay WI-
551 PM CDT Wed Apr 15 2026

...DENSE FOG ADVISORY IN EFFECT UNTIL 10 AM CDT THURSDAY...

.LATE THIS AFTERNOON...SE wind 5 to 10 kts. Waves 2 ft or less.
Patchy dense fog. a chance of light rain and a slight chance of
thunderstorms.
.TONIGHT...E wind 5 to 10 kts backing NE in the late evening and
overnight. Waves 2 ft or less. Areas of dense fog. a chance of
light rain and a slight chance of thunderstorms.
.THURSDAY...NE wind 5 to 10 kts veering SE early in the
afternoon. Waves 2 ft or less. Areas of dense fog in the morning.
Patchy fog in the afternoon. .
.THURSDAY NIGHT...SE wind 5 to 10 kts. Waves 2 ft or less. Partly
cloudy.
.FRIDAY...SE wind 10 to 15 kts veering S 15 to 25 kts early in
the afternoon. Waves 1 to 3 ft. Mostly cloudy. A Small Craft
Advisory may be needed.

$$

LMZ541-160400-
Rock Island Passage to Sturgeon Bay WI-
551 PM CDT Wed Apr 15 2026

...DENSE FOG ADVISORY IN EFFECT UNTIL 10 AM CDT THURSDAY...

.LATE THIS AFTERNOON...E wind around 5 kts. Waves 2 ft or less.
Areas of dense fog. a slight chance of light rain and
thunderstorms.
.TONIGHT...NE wind 5 to 10 kts backing N after midnight. Waves
2 ft or less. Areas of dense fog. a slight chance of
thunderstorms in the evening. A chance of light rain.
.THURSDAY...NE wind 5 to 10 kts veering SE early in the
afternoon. Waves 2 ft or less. Areas of dense fog in the morning.
.
.THURSDAY NIGHT...S wind 5 to 10 kts. Waves 2 ft or less. Partly
cloudy in the evening then becoming mostly cloudy.
.FRIDAY...S wind 10 to 15 kts increasing to 15 to 25 kts early in
the afternoon. Waves 2 ft or less building to 3 to 5 ft in the
afternoon. Mostly cloudy. A Small Craft Advisory may be needed.

$$

LMZ542-543-160400-
Sturgeon Bay to Two Rivers WI-Two Rivers to Sheboygan WI-
551 PM CDT Wed Apr 15 2026

...DENSE FOG ADVISORY IN EFFECT UNTIL 10 AM CDT THURSDAY...

.LATE THIS AFTERNOON...E wind around 5 kts. Waves 2 ft or less.
Areas of dense fog. a chance of light rain and thunderstorms.
.TONIGHT...NE wind 5 to 10 kts. Waves 2 ft or less. Areas of
dense fog. light rain likely in the evening. A chance of
thunderstorms. A chance of light rain after midnight.
.THURSDAY...N wind 5 to 10 kts veering NE early in the afternoon.
Waves 2 ft or less. Areas of dense fog in the morning. Patchy fog
in the afternoon. .
.THURSDAY NIGHT...S wind 5 to 10 kts. Waves 2 ft or less. Partly
cloudy in the evening then becoming mostly cloudy.
.FRIDAY...S wind 10 to 15 kts increasing to 15 to 25 kts in the
late morning and afternoon. Waves 1 to 3 ft building to 3 to 5 ft
in the afternoon. Mostly cloudy. A Small Craft Advisory may be
needed.

$$

See Lake Michigan Open Lake Forecast for Saturday through Monday.

Wave height forecast is for ice free areas.






870 

FZUS51 KCLE 152253
NSHCLE

Nearshore Marine Forecast
National Weather Service Cleveland OH
653 PM EDT Wed Apr 15 2026

For waters within five nautical miles of shore

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.

LEZ142>144-160215-
Maumee Bay to Reno Beach OH-Reno Beach to The Islands OH-
The Islands to Vermilion OH-
653 PM EDT Wed Apr 15 2026

.TONIGHT...Southwest winds 10 to 15 knots. Showers likely with a
chance of thunderstorms after midnight. Waves 2 feet or less.
.THURSDAY...Southwest winds 10 to 15 knots. Showers likely with a
chance of thunderstorms. Waves 2 feet or less.
.THURSDAY NIGHT...West winds 5 to 15 knots becoming northwest.
Showers likely with a chance of thunderstorms in the evening.
Waves 2 feet or less.
.FRIDAY...North winds less than 10 knots becoming east. Partly
sunny. Waves 1 foot or less.

Winds and waves higher in and near thunderstorms.

See Lake Erie open lakes forecast for Saturday through Monday.

The water temperature off Toledo is 51 degrees, off Cleveland 46
degrees, and off Erie 47 degrees.

$$

LEZ145>149-160215-
Vermilion to Avon Point OH-Avon Point to Willowick OH-
Willowick to Geneva-on-the Lake OH-Geneva-on-the-
Lake to Conneaut OH-Conneaut OH to Ripley NY-
653 PM EDT Wed Apr 15 2026

...SEVERE THUNDERSTORM WATCH 120 IN EFFECT UNTIL 9 PM EDT THIS
EVENING...

.TONIGHT...Southwest winds 5 to 15 knots. Showers and
thunderstorms early, then a chance of showers and thunderstorms.
Some thunderstorms may be severe with damaging winds and large
hail early. Waves 2 feet or less.
.THURSDAY...South winds 10 to 15 knots becoming southwest. A
chance of showers and thunderstorms in the morning, then showers
likely with a chance of thunderstorms in the afternoon. Waves
2 feet or less.
.THURSDAY NIGHT...Southwest winds 5 to 15 knots becoming west.
Showers likely with a chance of thunderstorms in the evening,
then a chance of showers overnight. Waves 2 feet or less.
.FRIDAY...Northwest winds 10 knots or less becoming north. Partly
sunny. Waves 1 foot or less.

Winds and waves higher in and near thunderstorms.

See Lake Erie open lakes forecast for Saturday through Monday.

The water temperature off Toledo is 51 degrees, off Cleveland 46
degrees, and off Erie 47 degrees.

$$