Northerly Isle, IL (CNII2) — Live Marine Conditions & Buoy Data
NOAA station CNII2, Northerly Isle, IL, reports real-time marine conditions from 41.856°N, 87.609°W in Lake Michigan (Illinois). 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 Northerly Isle, IL
As of August 21, 2026 at 21:15 UTC, Northerly Isle, IL (CNII2) is reporting air temperature 78°F and wind from the SSW at 9 mph gusting 14 mph.
- Air temperature
- 78°F
- Wind
- SSW 9 mph (gust 14)
Observed August 21, 2026 at 21:15 UTC from NOAA NDBC station CNII2. Readings update about every 10 minutes.
What NOAA buoy CNII2 measures
As a NOAA meteorological station, CNII2 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 CNII2 located?
- Northerly Isle, IL (CNII2) reports from 41.856°N, 87.609°W in Lake Michigan (Illinois).
- How often is NOAA buoy CNII2 updated?
- Station CNII2 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 CNII2 measure?
- Big Buoy shows wind, barometric pressure, air and water temperature, and wave height and period where available for Northerly Isle, IL, plus solunar peak windows and a multi-day weather outlook.
- Is Big Buoy free to use?
- Yes. Live data for Northerly Isle, IL 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.