Marine Forecast
Illustrated map of Lake Geneva

Marine forecast

Port Wing to Sand Island, WI

current wind
3 kt NE
Gusts
4 kt
Air
50°F
72-hr peak
30 kt
Peak seas
5 ft

Observed Tue 1:40 PM | LSZ146

Gusts now
4 kt
Air
50°F
72-hr peak
30 kt
Peak seas
5 ft

In brief

At 1:40 pm CDT on Oct 13, 2026, NDBC station PNGW3 (Port Wing, WI, 12 miles away) measured wind from the NE at 3 kt, gusting to 4 kt. The NWS forecast for Port Wing to Sand Island, WI issued at 2:22 pm CDT on Oct 13, 2026 reads, for tonight: “Northwest wind 5 to 10 knots. Chance of sprinkles early in the evening.”

Source: National Weather Service Duluth MN forecast; NDBC observations

Wind forecast · ktPeak 30 kt

0510152025303540Wed 14Thu 15Fri 160510152025303540Wed 14Thu 15Fri 16
Sustained GustOct 13-16 | CDT

Seas forecast · ftPeak 5 ft

012345Wed 14Thu 15Fri 16012345Wed 14Thu 15Fri 16
Oct 13-16 | CDT

NWS marine forecast

PeriodForecast
TonightNorthwest wind 5 to 10 knots. Chance of sprinkles early in the evening. Waves 1 to 2 feet.
WednesdayNorthwest wind 5 to 10 knots. Mostly sunny. Waves 1 foot or less.
Wednesday NightEast wind 5 knots becoming southeast after midnight. Partly cloudy in the evening then becoming mostly cloudy. Waves 1 foot or less.
ThursdaySouth wind 5 knots becoming southwest with gusts to around 20 knots in the afternoon. Slight chance of rain showers in the morning, then chance of rain showers in the afternoon. Waves 1 foot or less.

Issued Tue 2:22 PM by Duluth MN (product NSHDLH).

TimeWindGustSeasWater
Tue 1:40 PM 3 kt NE 4 kt — —
Tue 12:50 PM 2 kt WNW 3 kt — —
Tue 11:50 AM 2 kt NW 3 kt — —
Tue 10:50 AM 5 kt W 5 kt — —
Tue 9:50 AM 0 kt 3 kt — —
Tue 8:50 AM 1 kt NE 2 kt — —
Tue 7:50 AM 2 kt NW 3 kt — —
Tue 6:50 AM 4 kt N 6 kt — —
Tue 5:50 AM 8 kt NNE 11 kt — —
Tue 4:50 AM 12 kt NNE 15 kt — —
Tue 3:50 AM 13 kt NNE 16 kt — —
Tue 2:50 AM 14 kt NNE 16 kt — —

Observed Tue 1:40 PM at NDBC buoy PNGW3 (Port Wing, WI), 12.2 miles away.

What is the marine forecast for Port Wing to Sand Island today?

Tonight: Northwest wind 5 to 10 knots. Chance of sprinkles early in the evening. Waves 1 to 2 feet.

Is there a small craft advisory for Port Wing to Sand Island?

No advisories, warnings or watches are in effect for NWS zone LSZ146 as of the last update on this page. Advisories can be issued at any time; check the current bulletin before leaving the dock.

What do the wind speeds in knots mean?

One knot is 1.15 mph. The National Weather Service issues a small craft advisory for sustained winds of roughly 22–33 knots or hazardous seas, a gale warning at 34–47 knots, and a storm warning at 48 knots and above. Exact advisory thresholds vary by forecast office and by water body — a bay reaches dangerous chop at a lower wind speed than open ocean.

Where does this forecast come from?

The forecast text is the National Weather Service's own marine bulletin for zone LSZ146, issued by Duluth MN, reproduced in full. The wind and seas charts are drawn from the NWS gridded forecast for a point inside the zone. Observations come from the nearest reporting NDBC buoy. We are not affiliated with NOAA or the National Weather Service.

Forecast: NOAA/NWS product NSHDLH, issued Tue 2:22 PM. Observations: NOAA National Data Buoy Center station PNGW3, read Tue 1:40 PM. Retrieved Oct 13, 2:42 PM. Conditions offshore change faster than any page can be rebuilt, so check the current NWS bulletin and your own instruments before going out.