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USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.

The HF Radar site is now available only via HTTPS. Please update your bookmarks and/or links to use https://hfradar.ndbc.noaa.gov/.

This is the NOAA HF Radar National Server. HF Radar is used to remotely measure ocean surface currents.

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Data Age (in hours): 0-3 4-12 13+
Selected Station
Site Availability Statistics
Date2018-08-14 2018-08-13 2018-08-12 2018-08-11 2018-08-10 2018-08-09 2018-08-08
Reported / Expected135 / 183139 / 183139 / 183140 / 183140 / 183137 / 183141 / 183

For more information, see IOOS® High Frequency (HF) Radar.

View HF Radar data in Tabular Format.