North Lake Champlain (45221) — Live Marine Conditions & Buoy Data
NOAA station 45221, North Lake Champlain, reports real-time marine conditions from 44.756°N, 73.355°W in the western North Atlantic. Readings refresh roughly every 10 minutes, and Big Buoy adds 7-day tide predictions, a solunar table, and a multi-day weather outlook for the area.
Current conditions at North Lake Champlain
As of August 21, 2026 at 21:10 UTC, North Lake Champlain (45221) is reporting water temperature 74°F, air temperature 76°F, and wind from the N at 7 mph.
- Water temperature
- 74°F
- Air temperature
- 76°F
- Wind
- N 7 mph
Observed August 21, 2026 at 21:10 UTC from NOAA NDBC station 45221. Readings update about every 10 minutes.
What NOAA buoy 45221 measures
As a NOAA meteorological station, 45221 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 the western North Atlantic
Conditions along the Atlantic coast are driven by swell direction and the shifting western edge of the Gulf Stream. Northeast winds against an outgoing tide stack up steep, dangerous seas at inlets, and water temperature can change 10–20°F over just a few miles as the Gulf Stream boundary moves.
Frequently asked questions
- Where is NOAA buoy 45221 located?
- North Lake Champlain (45221) reports from 44.756°N, 73.355°W in the western North Atlantic.
- How often is NOAA buoy 45221 updated?
- Station 45221 typically reports new observations about every 10 minutes. Big Buoy refreshes continuously so you always see the latest readings, alongside 7-day tide predictions and a solunar table for the area.
- What does NOAA buoy 45221 measure?
- Big Buoy shows wind, barometric pressure, air and water temperature, and wave height and period where available for North Lake Champlain, plus 7-day tides, solunar peak windows, and a multi-day weather outlook.
- Is Big Buoy free to use?
- Yes. Live data for North Lake Champlain 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.