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

vectors 25 hr avg Loading... 6k resolution 2k resolution 1k resolution 500m resolution time lapse sites Select Basemap Oceans Satellite Streets Topographic

cm/s knots 200   180   160   140   120   100   80   60   40   20   0   3.8   3.6   3.4   3.2   3.0   2.8   2.6   2.4   2.2   2.0   1.8   1.6   1.4   1.2   1.0   0.8   0.6   0.4   0.2   0

Data Age (in hours):

0-3

4-12

13+

Selected Station

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

View HF Radar data in Tabular Format.