the explanation at the bottom of this page.
From North to SouthByron Bay
Reading the graphic:
Good ground swells (long period swells) have strong colour away from the middle, chop is energy towards the middle (short period). The colour shows the amount of energy at that combination of direction and period.
A short stripy curve of the same period energy is preferable to a big blotch over a range of periods and directions.
These images are direct from Manly Hydraulics Laboratory and together they provide an overview of the swell on the whole NSW coast.
For a fuller explanation of Directional Spectra see: ssurfings.blogspot.com.au/2014/02/mhl-directional-spectra-translated.html If you see weird or blank graphs it usually means that the buoy is malfunctioning or adrift. For information about these wave rider buoys see: mhl.nsw.gov.au/data/realtime/wave
NSW Nearshore Wave Forecast - Wave Data + ForecastThis set of graphics by MHL does not work for me.
This is both a record of recent readings (the last 6 days) and three days of forecasts.
It provides transformed wave data based on offshore wave conditions from the NSW Waverider buoy network combined with NOAA's WAVEWATCH III model.
[The data generation is automated]