tidal predictions using HF radar data http://tidesandcurrents.noaa.gov/hfradar/ web page on High Frequency (HF) Radar Surface Currents High Frequency (HF) Radar web product, High Frequency Radar Surface Currents (CO-OPS) High Frequency Radar Surface Currents Tidal Data and Predictions High Frequency Radar Surface Currents HF Radar Surface Currents