Grand Island North, MI (268) (45211) — Live Marine Conditions & Buoy Data
NOAA station 45211, Grand Island North, MI (268), reports real-time marine conditions from 46.973°N, 86.568°W in Lake Superior (Michigan). Readings refresh roughly every 10 minutes, and Big Buoy adds a solunar table and a multi-day weather outlook for the area.
Lake Superior Marine Conditions — Grand Island North, MI (268) is one of several stations in Lake Superior. See live buoy data and solunar for the whole area.
Current conditions at Grand Island North, MI (268)
As of October 19, 2026 at 18:56 UTC, Grand Island North, MI (268) (45211) is reporting water temperature 53°F and wave height 1.3 ft at a 3-second dominant period.
- Water temperature
- 53°F
- Wave height
- 1.3 ft @ 3 s
Observed October 19, 2026 at 18:56 UTC from NOAA NDBC station 45211. Readings update about every 10 minutes.
What NOAA buoy 45211 measures
As a NOAA meteorological station, 45211 reports wind speed, gusts and direction, barometric pressure, air and water temperature, and — where wave sensors are fitted — significant wave height, swell period, and wave direction.
What to watch in Lake Superior
Lake Superior is the coldest, deepest, and largest of the Great Lakes, with enough open water and fetch to build true offshore seas. Water stays cold most of the year and storms move through fast, so a sustained blow can raise steep, short-period waves with little warning — read wind, fetch, and sea state together before heading out.
Frequently asked questions
- What is the water temperature at Grand Island North?
- Sea surface temperature at Grand Island North was 53°F. Measured October 19, 2026 at 18:56 UTC by NOAA station 45211 (Grand Island North, MI (268)). NDBC measures this near the surface, at a depth that varies by station.
- How big are the waves at Grand Island North?
- Significant wave height at Grand Island North was 1.3 ft, with a 3-second dominant period. Measured October 19, 2026 at 18:56 UTC by NOAA station 45211 (Grand Island North, MI (268)). Significant wave height is the average of the highest one-third of waves — individual waves can be larger.
- Which direction are the waves coming from at Grand Island North?
- Waves at Grand Island North were arriving from 309° true (NW) at the dominant period. Measured October 19, 2026 at 18:56 UTC by NOAA station 45211 (Grand Island North, MI (268)).
- How much wind chop is at Grand Island North?
- The wind-wave component at Grand Island North had a significant height of 1.3 ft at a 3-second peak period, from the NW. Measured October 19, 2026 at 18:56 UTC by NOAA station 45211 (Grand Island North, MI (268)). Swell and wind-wave heights combine in quadrature, not by addition.
- Where is NOAA buoy 45211 located?
- Grand Island North, MI (268) (45211) reports from 46.973°N, 86.568°W in Lake Superior (Michigan).
- How often is NOAA buoy 45211 updated?
- Station 45211 typically reports new observations about every 10 minutes. Big Buoy refreshes continuously so you always see the latest readings, alongside a solunar table for the area.
- What does NOAA buoy 45211 measure?
- Big Buoy shows wind, barometric pressure, air and water temperature, and wave height and period where available for Grand Island North, MI (268), plus solunar peak windows and a multi-day weather outlook.
- Is Big Buoy free to use?
- Yes. Live data for Grand Island North, MI (268) and every other NOAA buoy is free with no account required. Big Buoy Pro adds the Wind Tab, the Depth Chart, satellite overlays (sea surface temp, chlorophyll, currents), 16-day forecasts, and forecast model switching.