National Network of Regional Coastal Monitoring Programmes
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Wave Spectra for 18/05/2025 18:30(i) GMT
Note that these are real-time data and are not quality-controlled. Long-range graphs are plotted from a randomised subsample of half-hourly data.
St Mary's Sound
Wave Spectra for 18/05/2025 18:30(i) GMT
Wave Spectra page developed in conjunction with Fugro GB Limited.
Wave Spectra page developed in conjunction with Fugro GB Limited.
| Sea and Swell Summary for (18/05/2025 18:30(i) GMT) | |
|---|---|
| Significant Wave Height (m) | 0.62 |
| Wave zero up crossing period (Spectrum Tz) (s) | 3.8 |
| Wind Wave Significant Wave Height (m) | 0.62 |
| Wind Wave Peak Period (s) | 4.4 |
| Wind Wave Peak Period Direction (°) | 110 |
| Swell Significant Wave Height (m) | 0.08 |
| Swell Peak Period (s) | 11.8 |
| Swell Peak Period Direction (°) | 160.3 |
| % Swell | 1.6 |
Wave Spectra for date 18/05/2025 18:30(i):
| Frequency (Hz) | Period (s) | Normalised Energy | Energy |
|---|---|---|---|
| 0.085 | 11.8 | 0.054 | 0.019 |
| 0.105 | 9.5 | 0.137 | 0.048 |
| 0.125 | 8 | 0.159 | 0.056 |
| 0.145 | 6.9 | 0.035 | 0.012 |
| 0.165 | 6.1 | 0.035 | 0.012 |
| 0.175 | 5.7 | 0.079 | 0.028 |
| 0.185 | 5.4 | 0.166 | 0.058 |
| 0.195 | 5.1 | 0.131 | 0.046 |
| 0.205 | 4.9 | 0.605 | 0.212 |
| 0.21 | 4.8 | 0.864 | 0.303 |
| 0.215 | 4.7 | 0.671 | 0.236 |
| 0.22 | 4.5 | 0.671 | 0.236 |
| 0.225 | 4.4 | 1 | 0.351 |
| 0.23 | 4.3 | 0.73 | 0.256 |
| 0.235 | 4.3 | 0.631 | 0.221 |
| 0.24 | 4.2 | 0.328 | 0.115 |
| 0.245 | 4.1 | 0.17 | 0.06 |
| 0.255 | 3.9 | 0.131 | 0.046 |
| 0.265 | 3.8 | 0.173 | 0.061 |
| 0.275 | 3.6 | 0.206 | 0.072 |
| 0.285 | 3.5 | 0.315 | 0.11 |
| 0.305 | 3.3 | 0.177 | 0.062 |
| 0.325 | 3.1 | 0.108 | 0.038 |
| 0.345 | 2.9 | 0.099 | 0.035 |
| 0.365 | 2.7 | 0.051 | 0.018 |
| 0.445 | 2.2 | 0.042 | 0.015 |
| 0.525 | 1.9 | 0.014 | 0.005 |
