733
FZUS53 KDLH 042015
NSHDLH

Nearshore Marine Forecast
National Weather Service Duluth MN
315 PM CDT Fri Jul 4 2025

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.

LSZ140-141-050415-
Grand Portage to Grand Marais MN-
Grand Marais to Taconite Harbor MN-
315 PM CDT Fri Jul 4 2025

.TONIGHT...South wind 5 knots becoming southwest in the late
evening and overnight. Chance of rain showers until early
morning. Chance of thunderstorms through the night. Rain showers
likely late in the night. Waves 1 to 2 feet.
.SATURDAY...South wind 5 to 10 knots becoming northwest late in
the afternoon. Rain showers in the morning. Thunderstorms through
the day. Chance of rain showers in the afternoon. Waves 1 to
2 feet.
.SATURDAY NIGHT...North wind 10 to 15 knots with gusts to around
20 knots. Chance of thunderstorms in the evening. Chance of rain
showers through the night. Waves 1 to 2 feet.
.SUNDAY...Northeast wind 10 to 15 knots with gusts to around
20 knots becoming east 5 to 10 knots in the afternoon. Mostly
sunny. Waves 1 to 2 feet.

$$

LSZ143-050415-
Silver Bay Harbor to Two Harbors MN-
315 PM CDT Fri Jul 4 2025

.TONIGHT...Southeast wind 5 to 10 knots becoming southwest in the
late evening and overnight. Slight chance of showers and
thunderstorms in the evening, then showers and thunderstorms
likely after midnight. Waves 1 foot or less.
.SATURDAY...Southwest wind 5 knots becoming northwest late in the
afternoon. Showers and thunderstorms. Waves 1 foot or less.
.SATURDAY NIGHT...North wind 5 to 10 knots. Slight chance of
thunderstorms in the evening. Chance of showers through the
night. Waves 1 foot or less.
.SUNDAY...North wind 5 to 10 knots becoming east in the late
morning and afternoon. Mostly sunny. Waves 1 foot or less.

$$

LSZ142-050415-
Taconite Harbor to Silver Bay Harbor MN-
315 PM CDT Fri Jul 4 2025

...SEVERE THUNDERSTORM WATCH 486 IN EFFECT UNTIL 9 PM CDT THIS
EVENING...

.TONIGHT...Southeast wind 5 knots becoming southwest in the late
evening and overnight. Slight chance of showers and thunderstorms
in the evening, then showers likely and chance of thunderstorms
after midnight. Waves 1 foot or less.
.SATURDAY...South wind 5 knots becoming northwest late in the
afternoon. Showers and thunderstorms. Waves 1 foot or less.
.SATURDAY NIGHT...North wind 5 to 10 knots. Gusts up to 20 knots
until early morning. Chance of thunderstorms in the evening.
Chance of showers through the night. Waves 1 foot or less.
.SUNDAY...North wind 5 to 10 knots becoming east in the late
morning and afternoon. Sunny in the morning then becoming partly
sunny. Waves 1 foot or less.

$$

LSZ144-050415-
Two Harbors to Duluth MN-
315 PM CDT Fri Jul 4 2025

.TONIGHT...South wind 5 to 10 knots with gusts to around 20 knots
becoming south 5 to 10 knots in the late evening and overnight.
Slight chance of showers and thunderstorms late in the evening.
Chance of showers and thunderstorms after midnight. Waves 1 to
2 feet.
.SATURDAY...Southwest wind 5 to 10 knots becoming northwest late
in the afternoon. Showers and thunderstorms. Waves 1 foot or
less.
.SATURDAY NIGHT...North wind 10 to 15 knots. Gusts up to 20 knots
early in the evening. Chance of rain showers through the night.
Waves 1 foot or less.
.SUNDAY...North wind 5 to 10 knots becoming northeast in the late
morning and afternoon. Mostly sunny. Waves 1 foot or less.

$$

LSZ145-050415-
Duluth MN to Port Wing WI-
315 PM CDT Fri Jul 4 2025

.TONIGHT...South wind 5 to 10 knots. Gusts up to 20 knots early
in the evening. Slight chance of showers and thunderstorms late
in the evening. Chance of showers and thunderstorms after
midnight. Waves 1 foot or less.
.SATURDAY...Southwest wind 5 to 10 knots becoming northwest late
in the afternoon. Showers and thunderstorms. Waves 1 foot or
less.
.SATURDAY NIGHT...Northwest wind 10 to 15 knots. Gusts up to
20 knots in the evening. Slight chance of thunderstorms in the
evening. Chance of rain showers through the night. Waves 1 to
2 feet.
.SUNDAY...North wind 5 to 10 knots becoming northeast in the late
morning and afternoon. Mostly sunny. Waves 1 foot or less.

$$

LSZ146-050415-
Port Wing to Sand Island WI-
315 PM CDT Fri Jul 4 2025

.TONIGHT...South wind 5 to 10 knots becoming southwest in the
late evening and overnight. Slight chance of showers and
thunderstorms after midnight. Chance of showers and thunderstorms
late in the night. Waves 1 foot or less.
.SATURDAY...Southwest wind 5 to 10 knots becoming northwest late
in the afternoon. Showers and thunderstorms. Waves 1 foot or
less.
.SATURDAY NIGHT...Northwest wind 5 to 10 knots. Chance of
thunderstorms in the evening. Chance of rain showers through the
night. Waves 1 foot or less.
.SUNDAY...North wind 5 to 10 knots becoming northeast in the late
morning and afternoon. Mostly sunny. Waves 1 foot or less.

$$

LSZ147-050415-
Sand Island to Bayfield WI-
315 PM CDT Fri Jul 4 2025

.TONIGHT...Southwest wind 5 to 10 knots. Slight chance of showers
and thunderstorms after midnight. Chance of showers and
thunderstorms late in the night. Waves 1 foot or less.
.SATURDAY...Southwest wind 5 to 10 knots becoming west in the
afternoon. Showers and thunderstorms. Waves 1 foot or less.
.SATURDAY NIGHT...Northwest wind 5 to 10 knots. Chance of
thunderstorms in the evening. Chance of rain showers through the
night. Waves 1 foot or less.
.SUNDAY...North wind 5 to 10 knots becoming northeast in the late
morning and afternoon. Mostly sunny. Waves 1 foot or less.

$$

LSZ150-050415-
Outer Apostle Islands Beyond 5 NM from Mainland-
315 PM CDT Fri Jul 4 2025

.TONIGHT...Southwest wind 10 to 15 knots. Slight chance of
showers and thunderstorms after midnight. Chance of showers and
thunderstorms late in the night. Waves 1 to 2 feet.
.SATURDAY...Southwest wind 5 to 10 knots becoming west in the
afternoon. Chance of showers and thunderstorms in the morning,
then showers and thunderstorms in the afternoon. Waves 1 to
2 feet.
.SATURDAY NIGHT...Northwest wind 5 to 10 knots. Chance of showers
and thunderstorms in the evening, then slight chance of rain
showers after midnight. Waves 1 to 2 feet.
.SUNDAY...Northeast wind 5 to 10 knots with gusts to around
20 knots becoming east in the afternoon. Mostly sunny. Waves 1 to
2 feet.

$$

LSZ121-050415-
Chequamegon Bay-Bayfield to Oak Point WI-
315 PM CDT Fri Jul 4 2025

.TONIGHT...Southwest wind 5 to 10 knots. Gusts up to 20 knots
early in the evening. Chance of showers and thunderstorms late in
the night. Waves 1 foot or less.
.SATURDAY...Southwest wind 5 to 10 knots becoming north late in
the afternoon. Showers and thunderstorms likely in the morning,
then showers and thunderstorms in the afternoon. Waves 1 foot or
less.
.SATURDAY NIGHT...Northwest wind 5 to 10 knots. Slight chance of
thunderstorms in the evening. Chance of rain showers through the
night. Waves 1 foot or less.
.SUNDAY...Northeast wind 5 to 10 knots. Mostly sunny. Waves
1 foot or less.

$$

LSZ148-050415-
Oak Point to Saxon Harbor WI-
315 PM CDT Fri Jul 4 2025

.TONIGHT...Southwest wind 5 to 10 knots. Gusts up to 20 knots
early in the evening then 20 knots late in the night. Slight
chance of showers and thunderstorms late in the night. Waves 1 to
2 feet.
.SATURDAY...Southwest wind 5 to 10 knots becoming north late in
the afternoon. Showers and thunderstorms likely in the morning,
then showers and thunderstorms in the afternoon. Waves 1 foot or
less.
.SATURDAY NIGHT...North wind 5 to 10 knots becoming northwest
after midnight. Chance of showers and thunderstorms in the
evening, then slight chance of rain showers after midnight. Waves
1 foot or less.
.SUNDAY...Northeast wind 5 to 10 knots. Mostly sunny. Waves 1 to
2 feet.

$$

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

HA