The National Oceanic and Atmospheric Administration (NOAA) National Ocean Service (NOS) Center for Operational Oceanographic Products and Services (CO-OPS) maintains a network of fixed platform shore stations throughout the USA. These shore stations are the foundation for NOAA's tide prediction products. They report water level, or sea surface height, as the amount of water above or below mean lower low water (MLLW). In addition, they also report meteorological observations such as wind, air temperature, air pressure, and sea surface temperature.
disclaimer: These raw data have not been subjected to the National Ocean Service's quality assurance procedures. They are released for limited public use as preliminary data to be used only with appropriate caution. For verified sea level data, click here.
time period: current; updates every 1 minute for sea level and every 6-12 minutes for meteorological observations.