The man behind the WaveCast(R) surf forecasts at WetSand.com, Nathan Todd Cool, takes surf forecasting one step further, showing how you can make surf forecasts with simple calculations and free, publicly available data.

"The WetSand WaveCast(R) Guide to Surf Forecasting" explains in easy to understand terms the science behind waves, winds, water temperatures, tidal swings, and more.

Learn how to predict when swells will arrive, how big waves will be, and telltale signs of common hazards. Find out how to predict winds, forecast temperature fluctuations, and foresee anomalies like...