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    Waves

    General Discussion
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    • K
      keyeffdee
      last edited by

      Hey
      We are currently extremely depending on waves on our job. We have a limit on 1,5 meters significant.
      The values shown in the app or webpage is it maximum, average or significant waves?

      Gkikas LGPZG 1 Reply Last reply Reply Quote 1
      • Gkikas LGPZG
        Gkikas LGPZ Moderator Meteorologist @keyeffdee
        last edited by

        @keyeffdee
        Significant wave height
        i.e. the mean wave height (trough to crest) of the highest third of the waves.

        K 1 Reply Last reply Reply Quote 2
        • K
          keyeffdee @Gkikas LGPZ
          last edited by keyeffdee

          @meteo-gr thanks then windy is just what I need 👍

          Gkikas LGPZG 1 Reply Last reply Reply Quote 0
          • Gkikas LGPZG
            Gkikas LGPZ Moderator Meteorologist @keyeffdee
            last edited by

            @ivo
            I think you have to change the definition, here:
            https://community.windy.com/topic/3361/description-of-weather-overlays/1

            Is significant wave height, not mean wave height.

            giodolifG 1 Reply Last reply Reply Quote 2
            • TZT
              TZ Administrator
              last edited by

              Confirm that "Waves" mean Significant wave height. Description corrected.

              1 Reply Last reply Reply Quote 3
              • giodolifG
                giodolif @Gkikas LGPZ | Premium
                last edited by

                @gkikas-lgpz
                I think it is necessary to correct this definition of "mean waves heght" here too:

                09dc8c44-78fb-4418-b928-9fc4213e42d7-image.png

                Best wishes

                KorinaK 1 Reply Last reply Reply Quote 1
                • KorinaK
                  Korina @giodolif
                  last edited by

                  @giodolif Hello, significant wave height is also defined as "mean wave height" - https://en.wikipedia.org/wiki/Significant_wave_height

                  Korina

                  giodolifG 1 Reply Last reply Reply Quote 0
                  • giodolifG
                    giodolif @Korina | Premium
                    last edited by idefix37

                    @korina thank you for your quick reply. Windy.com is an amazing tool for many many users from a wide range of uses. So that I think it is worthy to be accurate on using technical words. Note that, the "significant height" is the same as "mean wave height of the highest third of the waves". If you don´t want to use "significant wave height", it is not correct to substitute it just with "mean wave height". The true "mean wave height" is actually around 64% of the "significant height".

                    ac51eac7-2ed0-4d7e-94c1-65ed883e15c9-image.png .

                    Best wishes.

                    KorinaK 1 Reply Last reply Reply Quote 1
                    • KorinaK
                      Korina @giodolif
                      last edited by

                      @giodolif I will correct the description to "Significant wave height". Thank you for inputs.

                      Korina

                      giodolifG 1 Reply Last reply Reply Quote 3
                      • giodolifG
                        giodolif @Korina | Premium
                        last edited by

                        @korina thank you very much for help improving Windy.com. I´m meteorologist and I´ve recently explainned to my instagram followers about this tricky details regarding waves height forecasts, citing Windy.com. My profile: @hashtag.ceu Best wishes.

                        1 Reply Last reply Reply Quote 1
                        • W
                          wmassaar
                          last edited by

                          a350eac3-4f48-426b-bb39-e47f03f8c169-image.png

                          This graph is a bit confusing: Significant waveheight is the average of 1/3 of the highest waves.
                          thus e.g. 100 waves divided from small to largest: the average of waves 67 to 100 is the significant waveheight :

                          idefix37I 1 Reply Last reply Reply Quote 0
                          • idefix37I
                            idefix37 Sailor Moderator @wmassaar
                            last edited by idefix37

                            @wmassaar

                            The graph shown by @giodolif doesn't say anything different from what you are saying.
                            It is a statistical distribution of the wave heights. On the y-axis it is the number of waves not their height.

                            1 Reply Last reply Reply Quote 0
                            • L
                              lambbowline
                              last edited by

                              The values shown on the app or website are typically the significant wave height, which represents the average height of the highest third of the waves.

                              1 Reply Last reply Reply Quote 0
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