Lake St Clair (45147) — Live Marine Conditions & Buoy Data
NOAA station 45147, Lake St Clair, reports real-time marine conditions from 42.430°N, 82.680°W in Lake Erie. Readings refresh roughly every 10 minutes, and Big Buoy adds a solunar table and a multi-day weather outlook for the area.
Lake Erie Marine Conditions — Lake St Clair is one of several stations in Lake Erie. See live buoy data and solunar for the whole area.
Current conditions at Lake St Clair
As of August 21, 2026 at 20:00 UTC, Lake St Clair (45147) is reporting water temperature 74°F, air temperature 76°F, wave height 0.7 ft at a 2-second dominant period, wind from the SSE at 9 mph, and barometric pressure 30.04 inHg.
- Water temperature
- 74°F
- Air temperature
- 76°F
- Wave height
- 0.7 ft @ 2 s
- Wind
- SSE 9 mph
- Barometric pressure
- 30.04 inHg
Observed August 21, 2026 at 20:00 UTC from NOAA NDBC station 45147. Readings update about every 10 minutes.
What NOAA buoy 45147 measures
As a NOAA meteorological station, 45147 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 Erie
Lake Erie is the shallowest Great Lake, which makes it the fastest to turn dangerous: northwesterly winds can stack steep 4–6 ft seas in the western basin within hours, and wind-driven seiches shift water levels several feet end to end. Watch wind speed and direction closely and check the buoy in your basin.
Frequently asked questions
- Where is NOAA buoy 45147 located?
- Lake St Clair (45147) reports from 42.430°N, 82.680°W in Lake Erie.
- How often is NOAA buoy 45147 updated?
- Station 45147 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 45147 measure?
- Big Buoy shows wind, barometric pressure, air and water temperature, and wave height and period where available for Lake St Clair, plus solunar peak windows and a multi-day weather outlook.
- Is Big Buoy free to use?
- Yes. Live data for Lake St Clair 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.