Marine Forecast
Illustrated map of Grand Traverse Bay

Marine forecast

St. Ignace to False Detour Channel, MI

current wind
7 kt NNE
Gusts
8 kt
Seas
0.7 ft
Water
54°F
72-hr peak
23 kt

Observed Tue 2:54 PM | LHZ346

Gusts now
8 kt
Seas now
0.7 ft
Water
54°F
72-hr peak
23 kt
Peak seas
2 ft

In brief

At 2:54 pm EDT on Oct 13, 2026, NDBC station DTLM4 (De Tour Village, MI, 12 miles away) measured wind from the NNE at 7 kt, gusting to 8 kt; buoy 45194 measured seas of 0.7 ft. The NWS forecast for St. Ignace to False Detour Channel, MI issued at 2:51 pm EDT on Oct 13, 2026 reads, for through early evening: “Northwest wind 10 to 15 knots. Cloudy.”

Source: National Weather Service Gaylord MI forecast; NDBC observations

Wind forecast · ktPeak 23 kt

05101520253035Wed 14Thu 15Fri 1605101520253035Wed 14Thu 15Fri 16
Sustained GustOct 13-16 | EDT

Seas forecast · ftPeak 2 ft

012Wed 14Thu 15Fri 16012Wed 14Thu 15Fri 16
Oct 13-16 | EDT

NWS marine forecast

PeriodForecast
Through Early EveningNorthwest wind 10 to 15 knots. Cloudy. Waves 2 feet or less.
TonightNorthwest wind 10 to 15 knots. Mostly cloudy. Waves 2 feet or less.
WednesdayNorthwest wind 10 to 15 knots. Mostly cloudy. Waves 2 feet or less.
Wednesday NightNortheast wind 5 to 10 knots. Mostly cloudy. Waves 2 feet or less.
ThursdaySoutheast wind 10 to 15 knots. Chance of showers. Waves 2 feet or less. See the open lakes forecast for days 3 through 5.

Issued Tue 2:51 PM by Gaylord MI (product NSHAPX).

TimeWindGustSeasWater
Tue 2:54 PM 7 kt NNE 8 kt — 54°F
Tue 1:54 PM 7 kt NNE 8 kt — 54°F
Tue 12:54 PM 8 kt ENE 10 kt — 54°F
Tue 11:54 AM 8 kt E 10 kt — 54°F
Tue 10:54 AM 9 kt ENE 11 kt — 54°F
Tue 9:54 AM 8 kt ENE 10 kt — 54°F
Tue 8:54 AM 7 kt E 10 kt — 54°F
Tue 7:54 AM 7 kt NE 9 kt — 54°F
Tue 6:54 AM 10 kt ENE 13 kt — 54°F
Tue 5:54 AM 8 kt E 10 kt — 54°F
Tue 4:54 AM 10 kt ENE 14 kt — 54°F
Tue 3:54 AM 10 kt ENE 12 kt — 54°F

Observed Tue 2:54 PM at NDBC buoy DTLM4 (De Tour Village, MI), 11.5 miles away. Seas from buoy 45194 (McGulpin Point North, MI (253)), 33.5 miles away, at Tue 3:00 PM.

What is the marine forecast for St. Ignace to False Detour Channel today?

Through Early Evening: Northwest wind 10 to 15 knots. Cloudy. Waves 2 feet or less.

Is there a small craft advisory for St. Ignace to False Detour Channel?

No advisories, warnings or watches are in effect for NWS zone LHZ346 as of the last update on this page. Advisories can be issued at any time; check the current bulletin before leaving the dock.

How high are the waves at St. Ignace to False Detour Channel right now?

Seas are running 0.7 ft, measured at NDBC buoy DTLM4 Tue 2:54 PM, 11.5 miles from this zone. The forecast peaks at 2.0 ft Fri 2 PM.

What is the water temperature at St. Ignace to False Detour Channel?

The nearest buoy read 54°F (12°C) at Tue 2:54 PM. Sea surface temperature at a single buoy can differ by several degrees from the water at a beach or in a shallow bay nearby.

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 LHZ346, issued by Gaylord MI, 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 NSHAPX, issued Tue 2:51 PM. Observations: NOAA National Data Buoy Center station DTLM4, read Tue 2:54 PM. Retrieved Oct 13, 3:42 PM. Conditions offshore change faster than any page can be rebuilt, so check the current NWS bulletin and your own instruments before going out.