Port conditions
Tide times, wind, waves and water temperature near a port, from the nearest NOAA weather buoys and tide stations.
Information only — not for navigation. Never use these results to plan or conduct a passage.
Conditions near Grand Blanc, from 2 NOAA stations within 100 km.
Weather buoys
Buoy CLSM4 78 km awayObserved Oct 6, 2026, 15:00 UTC
- Wind
- 5.1 kn from 200°
- Gusts
- 9.9 kn
- Waves
- —
- Water
- —
- Air
- 16 °C
- Pressure
- 1,023 hPa
Wind speed, last 24 hours
Last 24 hours: wind 0–8 kn.
Buoy Lake St Clair 94 km awayObserved Oct 6, 2026, 15:00 UTC
- Wind
- 7.8 kn from 210°
- Gusts
- —
- Waves
- 0.2 m, 2 s
- Water
- 16.6 °C
- Air
- 14.5 °C
- Pressure
- 1,023.1 hPa
Wind speed, last 24 hours
Wave height, last 24 hours
Last 24 hours: wind 6–12 kn, waves 0.2–0.4 m.
Source: NOAA National Data Buoy Center and NOAA CO-OPS Tides & Currents, US public domain.
Batch runs
Conditions at many ports at once?
Pro runs this tool for every row of a CSV or a watchlist, up to 500 rows at a time, in the Voydar Terminal, and downloads the answers as CSV. Single runs here stay free. Try Pro free for 14 days, once, no card needed.
How this works
- Stations: NOAA National Data Buoy Center buoys and CO-OPS tide stations within 100 km of the port's position, nearest first.
- Readings: the buoys' own reports, refreshed twice an hour, in the units NOAA publishes (wind converted from m/s to knots).
- Tides: NOAA's high/low predictions for the nearest tide station, refreshed daily, 8 days ahead. Local effects and weather can move the real tide by a lot.