9076070 - S.W. Pier, MI (SWPM4) — Live Marine Conditions & Buoy Data
NOAA station SWPM4, 9076070 - S.W. Pier, MI, reports real-time marine conditions from 46.501°N, 84.372°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.
Current conditions at 9076070 - S.W. Pier, MI
As of October 19, 2026 at 20:48 UTC, 9076070 - S.W. Pier, MI (SWPM4) is reporting water temperature 55°F, air temperature 59°F, wind from the W at 9 mph gusting 10 mph, and barometric pressure 30.36 inHg.
- Water temperature
- 55°F
- Air temperature
- 59°F
- Wind
- W 9 mph (gust 10)
- Barometric pressure
- 30.36 inHg
Observed October 19, 2026 at 20:48 UTC from NOAA NDBC station SWPM4. Readings update about every 10 minutes.
What NOAA buoy SWPM4 measures
As a NOAA meteorological station, SWPM4 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 NOAA buoy SWPM4?
- Sea surface temperature at NOAA buoy SWPM4 was 55°F. Measured October 19, 2026 at 20:48 UTC by NOAA station SWPM4 (9076070 - S.W. Pier, MI). NDBC measures this near the surface, at a depth that varies by station.
- What is the air temperature at NOAA buoy SWPM4?
- Air temperature at NOAA buoy SWPM4 was 59°F. Measured October 19, 2026 at 20:48 UTC by NOAA station SWPM4 (9076070 - S.W. Pier, MI).
- What is the wind doing at NOAA buoy SWPM4?
- Wind at NOAA buoy SWPM4 was from the W at 9 mph, with peak gusts to 10 mph. Measured October 19, 2026 at 20:48 UTC by NOAA station SWPM4 (9076070 - S.W. Pier, 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 NOAA buoy SWPM4?
- Sea-level pressure at NOAA buoy SWPM4 was 30.36 inHg (1028 hPa). Measured October 19, 2026 at 20:48 UTC by NOAA station SWPM4 (9076070 - S.W. Pier, MI). NDBC reports pressure reduced to sea level rather than the raw reading at the station.
- Where is NOAA buoy SWPM4 located?
- 9076070 - S.W. Pier, MI (SWPM4) reports from 46.501°N, 84.372°W in Lake Superior (Michigan).
- How often is NOAA buoy SWPM4 updated?
- Station SWPM4 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 SWPM4 measure?
- Big Buoy shows wind, barometric pressure, air and water temperature, and wave height and period where available for 9076070 - S.W. Pier, MI, plus solunar peak windows and a multi-day weather outlook.
- Is Big Buoy free to use?
- Yes. Live data for 9076070 - S.W. Pier, 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.