Alpena Harbor Light, Alpena, MI (APNM4) — Live Marine Conditions & Buoy Data
NOAA station APNM4, Alpena Harbor Light, Alpena, MI, reports real-time marine conditions from 45.060°N, 83.424°W in Lake Huron (Michigan). Readings refresh roughly every 10 minutes, and Big Buoy adds a solunar table and a multi-day weather outlook for the area.
Lake Huron Marine Conditions — Alpena Harbor Light, Alpena, MI is one of several stations in Lake Huron. See live buoy data and solunar for the whole area.
Current conditions at Alpena Harbor Light, Alpena, MI
As of October 19, 2026 at 19:40 UTC, Alpena Harbor Light, Alpena, MI (APNM4) is reporting air temperature 58°F and wind from the E at 9 mph gusting 10 mph.
- Air temperature
- 58°F
- Wind
- E 9 mph (gust 10)
Observed October 19, 2026 at 19:40 UTC from NOAA NDBC station APNM4. Readings update about every 10 minutes.
What NOAA buoy APNM4 measures
As a NOAA meteorological station, APNM4 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 Huron
Lake Huron pairs a big open main basin with the sheltered waters of Georgian Bay and the North Channel, so conditions vary a lot with where you are. The open lake builds steep, short-period seas on a sustained blow — check the buoy nearest your water and mind the wind direction.
Frequently asked questions
- What is the air temperature at Alpena Harbor Light, Alpena?
- Air temperature at Alpena Harbor Light, Alpena was 58°F. Measured October 19, 2026 at 19:40 UTC by NOAA station APNM4 (Alpena Harbor Light, Alpena, MI).
- What is the wind doing at Alpena Harbor Light, Alpena?
- Wind at Alpena Harbor Light, Alpena was from the E at 9 mph, with peak gusts to 10 mph. Measured October 19, 2026 at 19:40 UTC by NOAA station APNM4 (Alpena Harbor Light, Alpena, MI). NDBC records wind at the station’s anemometer height, which is not the 10 m height used in marine forecasts.
- Where is NOAA buoy APNM4 located?
- Alpena Harbor Light, Alpena, MI (APNM4) reports from 45.060°N, 83.424°W in Lake Huron (Michigan).
- How often is NOAA buoy APNM4 updated?
- Station APNM4 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 APNM4 measure?
- Big Buoy shows wind, barometric pressure, air and water temperature, and wave height and period where available for Alpena Harbor Light, Alpena, MI, plus solunar peak windows and a multi-day weather outlook.
- Is Big Buoy free to use?
- Yes. Live data for Alpena Harbor Light, Alpena, 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.