surf forecasting

The Buoys Light Up: The wonderful Directional Spectra

Swellnet Analysis

The Buoys Light Up: The wonderful Directional Spectra

Swellnet Analysis
Stu Nettle

Rather than the traditional X-Y line graph that can only chart one swell at a time, the Directional Spectra is a 360 degree screen that registers every swell in the water by its direction, its energy, and its period. This represents a significant leap forward. Whereas the line graph could only plot the most dominant swell in the water, the Directional Spectra chronicles multiple swells.

Making sense of Evan

Swellnet Analysis

Making sense of Evan

Swellnet Analysis
Stu Nettle

The swell from Evan was a true cyclone swell, one that was generated in the core of a severe, slow moving tropical cyclone, and yet it was nothing like a classic cyclone swell. The reason Evan won't be remembered that way is because it formed in isolation. Despite spending a week in the far reaches of our swell window and wreaking havoc on Samoa and Fiji, Evan lacked the associated weather features required to create classic cyclone swell conditions.

Mythbusting: Cyclones and Swell

Swellnet Dispatch

Mythbusting: Cyclones and Swell

Swellnet Dispatch
Stu Nettle

OK, it's mythbusting time!

Last October various Australian weather forecasters predicted that there would be 15 tropical cyclones in our waters during summer. That's five more, or an increase of 50%, than an average year. Their predictions were based upon the formation of the la nina weather phenomena that affected eastern Australia during the summer. During la nina years warmer than average water pools off the east coast of Australia providing conditions conducive to tropical cyclone creation.