Once these longer period waves break free from the storm’s confusion, they are easily identified as a more organized wave train, which we call swell. Direction Where the wind or swell is coming ...

Wave period is the distance between two waves passing through a stationary point, measured in seconds. When it comes reading forecast graphs, swell period is definitely the magic number.

The wind-wave period is the peak period in seconds of the wind-waves. In simpler terms, it's how often the waves go up and down. The longer the period, the more time there is between the crests of ...

Waves come in a variety of forms: ripples on the surface of a pond, sounds (as with the siren above), light, and earthquake tremors all exhibit periodic wave motion.