Big Bay, MI (BIGM4) — Live Marine Conditions & Buoy Data
NOAA station BIGM4, Big Bay, MI, reports real-time marine conditions from 46.827°N, 87.727°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 — Big Bay, MI is one of several stations in Lake Superior. See live buoy data and solunar for the whole area.
Current conditions at Big Bay, MI
As of October 19, 2026 at 19:50 UTC, Big Bay, MI (BIGM4) is reporting air temperature 59°F, wind from the ENE at 3 mph gusting 7 mph, and barometric pressure 30.35 inHg.
- Air temperature
- 59°F
- Wind
- ENE 3 mph (gust 7)
- Barometric pressure
- 30.35 inHg
Observed October 19, 2026 at 19:50 UTC from NOAA NDBC station BIGM4. Readings update about every 10 minutes.
What NOAA buoy BIGM4 measures
As a NOAA meteorological station, BIGM4 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 Big Bay?
- Air temperature at Big Bay was 59°F. Measured October 19, 2026 at 19:50 UTC by NOAA station BIGM4 (Big Bay, MI).
- What is the wind doing at Big Bay?
- Wind at Big Bay was from the ENE at 3 mph, with peak gusts to 7 mph. Measured October 19, 2026 at 19:50 UTC by NOAA station BIGM4 (Big Bay, MI). 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 Big Bay?
- Sea-level pressure at Big Bay was 30.35 inHg (1027.8 hPa). Measured October 19, 2026 at 19:50 UTC by NOAA station BIGM4 (Big Bay, MI). NDBC reports pressure reduced to sea level rather than the raw reading at the station.
- Where is NOAA buoy BIGM4 located?
- Big Bay, MI (BIGM4) reports from 46.827°N, 87.727°W in Lake Superior (Michigan).
- How often is NOAA buoy BIGM4 updated?
- Station BIGM4 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 BIGM4 measure?
- Big Buoy shows wind, barometric pressure, air and water temperature, and wave height and period where available for Big Bay, MI, plus solunar peak windows and a multi-day weather outlook.
- Is Big Buoy free to use?
- Yes. Live data for Big Bay, MI 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.