9415118 - Union Pacific Rail Road Bridge, Martinez, CA (UPBC1) — Live Marine Conditions & Buoy Data
NOAA station UPBC1, 9415118 - Union Pacific Rail Road Bridge, Martinez, CA, reports real-time marine conditions from 38.038°N, 122.121°W in the eastern North Pacific (California). 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.
San Francisco Bay Marine Conditions — 9415118 - Union Pacific Rail Road Bridge, Martinez, CA is one of several stations in San Francisco Bay. See live tides, buoy data, and solunar for the whole area.
What NOAA buoy UPBC1 measures
As a NOAA meteorological station, UPBC1 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 eastern North Pacific
The U.S. Pacific coast is dominated by long-period groundswell and strong seasonal upwelling that keeps nearshore water cold. Watch swell period as closely as wave height — a long-period west swell can make harbor entrances and bar crossings hazardous even when the wave height looks modest.
Frequently asked questions
- Where is NOAA buoy UPBC1 located?
- 9415118 - Union Pacific Rail Road Bridge, Martinez, CA (UPBC1) reports from 38.038°N, 122.121°W in the eastern North Pacific (California).
- How often is NOAA buoy UPBC1 updated?
- Station UPBC1 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 UPBC1 measure?
- Big Buoy shows wind, barometric pressure, air and water temperature, and wave height and period where available for 9415118 - Union Pacific Rail Road Bridge, Martinez, CA, plus 7-day tides, solunar peak windows, and a multi-day weather outlook.
- Is Big Buoy free to use?
- Yes. Live data for 9415118 - Union Pacific Rail Road Bridge, Martinez, CA 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.