Miyake reports that the Surf News Network expresses wave heights as "2/3 the height of the wave from crest to trough."
mˈɪjeɪk ɹᵻpˈoːɹts ðætðə sˈɜːf nˈuːz nˈɛtwɜːk ɛkspɹˈɛsᵻz wˈeɪv hˈaɪts æz "tˈuː slˈæʃ θɹˈiː ðə hˈaɪt ʌvðə wˈeɪv fɹʌm kɹˈɛst tə tɹˈɔf."