Get in the habit of looking at the wave maps, and when the new updates come in you can see how the small changes in the weather patterns influence the nearshore wind swell. For example, on Friday, there is a strong storm system moving off the coast, but if you look at the wave maps, you will that the latest updates shows mostly SW swell that turns W very quickly blowing out everything quickly. Staying on the updates, and looking closely wave maps will help you understand why the forecasts change with the foretasted weather tracks.