ATW20 - Atwater Park, WI (45013) — Live Marine Conditions & Buoy Data
NOAA station 45013, ATW20 - Atwater Park, WI, reports real-time marine conditions from 43.098°N, 87.850°W in Lake Michigan (Wisconsin). Readings refresh roughly every 10 minutes, and Big Buoy adds a solunar table and a multi-day weather outlook for the area.
Lake Michigan Marine Conditions — ATW20 - Atwater Park, WI is one of several stations in Lake Michigan. See live buoy data and solunar for the whole area.
What NOAA buoy 45013 measures
As a NOAA meteorological station, 45013 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 Michigan
Lake Michigan’s long north-south axis lets a sustained northerly or southerly wind build large, steep seas over its full fetch, sometimes within hours. Summer stratification is sharp and wind-driven upwelling can swing nearshore water temperature 15–20°F in a day, so watch wind direction and buoy temperatures together.
Frequently asked questions
- Where is NOAA buoy 45013 located?
- ATW20 - Atwater Park, WI (45013) reports from 43.098°N, 87.850°W in Lake Michigan (Wisconsin).
- How often is NOAA buoy 45013 updated?
- Station 45013 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 45013 measure?
- Big Buoy shows wind, barometric pressure, air and water temperature, and wave height and period where available for ATW20 - Atwater Park, WI, plus solunar peak windows and a multi-day weather outlook.
- Is Big Buoy free to use?
- Yes. Live data for ATW20 - Atwater Park, WI 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.