EAST SUPERIOR -70 NM NE Marquette, MI (45004) — Live Marine Conditions & Buoy Data
NOAA station 45004, EAST SUPERIOR -70 NM NE Marquette, MI, reports real-time marine conditions from 47.583°N, 86.586°W in Lake Superior (Michigan). Readings refresh roughly every 10 minutes, and Big Buoy adds a solunar table and a multi-day weather outlook for the area.
Lake Superior Marine Conditions — EAST SUPERIOR -70 NM NE Marquette, MI is one of several stations in Lake Superior. See live buoy data and solunar for the whole area.
Current conditions at EAST SUPERIOR -70 NM NE Marquette, MI
As of October 19, 2026 at 18:50 UTC, EAST SUPERIOR -70 NM NE Marquette, MI (45004) is reporting air temperature 50°F, wave height 2.0 ft at a 6-second dominant period, wind from the NW at 11 mph gusting 13 mph, and barometric pressure 30.42 inHg.
- Air temperature
- 50°F
- Wave height
- 2.0 ft @ 6 s
- Wind
- NW 11 mph (gust 13)
- Barometric pressure
- 30.42 inHg
Observed October 19, 2026 at 18:50 UTC from NOAA NDBC station 45004. Readings update about every 10 minutes.
What NOAA buoy 45004 measures
As a NOAA meteorological station, 45004 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 Superior
Lake Superior is the coldest, deepest, and largest of the Great Lakes, with enough open water and fetch to build true offshore seas. Water stays cold most of the year and storms move through fast, so a sustained blow can raise steep, short-period waves with little warning — read wind, fetch, and sea state together before heading out.
Frequently asked questions
- What is the air temperature at East Superior -70 NM NE Marquette?
- Air temperature at East Superior -70 NM NE Marquette was 50°F. Measured October 19, 2026 at 18:50 UTC by NOAA station 45004 (EAST SUPERIOR -70 NM NE Marquette, MI).
- What is the wind doing at East Superior -70 NM NE Marquette?
- Wind at East Superior -70 NM NE Marquette was from the NW at 11 mph, with peak gusts to 13 mph. Measured October 19, 2026 at 18:50 UTC by NOAA station 45004 (EAST SUPERIOR -70 NM NE Marquette, MI). NDBC records wind at the station’s anemometer height, which is not the 10 m height used in marine forecasts.
- How big are the waves at East Superior -70 NM NE Marquette?
- Significant wave height at East Superior -70 NM NE Marquette was 2.0 ft, with a 6-second dominant period. Measured October 19, 2026 at 18:50 UTC by NOAA station 45004 (EAST SUPERIOR -70 NM NE Marquette, MI). Significant wave height is the average of the highest one-third of waves — individual waves can be larger.
- Which direction are the waves coming from at East Superior -70 NM NE Marquette?
- Waves at East Superior -70 NM NE Marquette were arriving from 285° true (WNW) at the dominant period. Measured October 19, 2026 at 18:50 UTC by NOAA station 45004 (EAST SUPERIOR -70 NM NE Marquette, MI).
- What is the barometric pressure at East Superior -70 NM NE Marquette?
- Sea-level pressure at East Superior -70 NM NE Marquette was 30.42 inHg (1030.2 hPa). Measured October 19, 2026 at 18:50 UTC by NOAA station 45004 (EAST SUPERIOR -70 NM NE Marquette, MI). NDBC reports pressure reduced to sea level rather than the raw reading at the station.
- What is the swell at East Superior -70 NM NE Marquette?
- The swell at East Superior -70 NM NE Marquette had a significant height of 1.3 ft at a 6-second peak period, arriving from the WNW. Measured October 19, 2026 at 18:40 UTC by NOAA station 45004 (EAST SUPERIOR -70 NM NE Marquette, MI). NDBC separates swell from locally generated wind waves using a spectral estimate.
- How much wind chop is at East Superior -70 NM NE Marquette?
- The wind-wave component at East Superior -70 NM NE Marquette had a significant height of 1.6 ft at a 4-second peak period, from the WNW. Measured October 19, 2026 at 18:40 UTC by NOAA station 45004 (EAST SUPERIOR -70 NM NE Marquette, MI). Swell and wind-wave heights combine in quadrature, not by addition.
- Where is NOAA buoy 45004 located?
- EAST SUPERIOR -70 NM NE Marquette, MI (45004) reports from 47.583°N, 86.586°W in Lake Superior (Michigan).
- How often is NOAA buoy 45004 updated?
- Station 45004 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 45004 measure?
- Big Buoy shows wind, barometric pressure, air and water temperature, and wave height and period where available for EAST SUPERIOR -70 NM NE Marquette, MI, plus solunar peak windows and a multi-day weather outlook.
- Is Big Buoy free to use?
- Yes. Live data for EAST SUPERIOR -70 NM NE Marquette, 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.