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    swell & swell 2

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    • T
      tomhudu
      last edited by

      What ist the definition of "swell" and "swell 2", respectively what ist the difference between these two categories?

      idefix37I 1 Reply Last reply Reply Quote 1
      • idefix37I
        idefix37 Sailor Moderator @tomhudu
        last edited by idefix37

        @tomhudu

        As you probably know the shape of waves, in a given place, is a mix of different kind of waves:

        The windsea (also called wind waves) is produced by the local wind.

        The main swell is produced by a strong wind far away.

        Secondary swells are produced also by winds far away but in other places.

        All of them have different heights, come from different directions and show different periods (which is the time between 2 wave crests)
        Swell 1 is the main swell, swell 2 and 3 are secondary swells (the swell ranking 1, 2, 3 depends on their respective height).

        See also:
        https://community.windy.com/topic/3361/description-of-weather-overlays

        For example close to NewZealand coast you can observe different swell trains due to several storms at this season.

        BD5D919C-176C-4631-BD91-D0D4813D42E7.jpeg

        In this example, main swell from the East and Swell 2 from the South are caused by 2 different storms.

        1 Reply Last reply Reply Quote 7
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