Bay of Grand Marais, MN (KGNA) — Live Marine Conditions & Buoy Data
NOAA station KGNA, Bay of Grand Marais, MN, reports real-time marine conditions from 47.745°N, 90.346°W in Lake Superior (Minnesota). Readings refresh roughly every 10 minutes, and Big Buoy adds a solunar table and a multi-day weather outlook for the area.
Current conditions at Bay of Grand Marais, MN
As of October 19, 2026 at 19:56 UTC, Bay of Grand Marais, MN (KGNA) is reporting air temperature 55°F, wind at 0 mph, and barometric pressure 30.41 inHg.
- Air temperature
- 55°F
- Wind
- 0 mph
- Barometric pressure
- 30.41 inHg
Observed October 19, 2026 at 19:56 UTC from NOAA NDBC station KGNA. Readings update about every 10 minutes.
What NOAA buoy KGNA measures
As a NOAA meteorological station, KGNA 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 air temperature at Bay of Grand Marais?
- Air temperature at Bay of Grand Marais was 55°F. Measured October 19, 2026 at 19:56 UTC by NOAA station KGNA (Bay of Grand Marais, MN).
- What is the wind doing at Bay of Grand Marais?
- Wind at Bay of Grand Marais was calm, under 1 mph. Measured October 19, 2026 at 19:56 UTC by NOAA station KGNA (Bay of Grand Marais, MN). NDBC records wind at the station’s anemometer height, which is not the 10 m height used in marine forecasts.
- What is the barometric pressure at Bay of Grand Marais?
- Sea-level pressure at Bay of Grand Marais was 30.41 inHg (1029.8 hPa). Measured October 19, 2026 at 19:56 UTC by NOAA station KGNA (Bay of Grand Marais, MN). NDBC reports pressure reduced to sea level rather than the raw reading at the station.
- Where is NOAA buoy KGNA located?
- Bay of Grand Marais, MN (KGNA) reports from 47.745°N, 90.346°W in Lake Superior (Minnesota).
- How often is NOAA buoy KGNA updated?
- Station KGNA 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 KGNA measure?
- Big Buoy shows wind, barometric pressure, air and water temperature, and wave height and period where available for Bay of Grand Marais, MN, plus solunar peak windows and a multi-day weather outlook.
- Is Big Buoy free to use?
- Yes. Live data for Bay of Grand Marais, MN 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.