National Network of Regional Coastal Monitoring Programmes
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Wave Spectra for 31/03/2025 23:00(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 31/03/2025 23:00(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 (31/03/2025 23:00(i) GMT) | |
|---|---|
| Significant Wave Height (m) | 1.45 |
| Wave zero up crossing period (Spectrum Tz) (s) | 4 |
| Wind Wave Significant Wave Height (m) | 1.41 |
| Wind Wave Peak Period (s) | 5.1 |
| Wind Wave Peak Period Direction (°) | 121 |
| Swell Significant Wave Height (m) | 0.32 |
| Swell Peak Period (s) | 10.5 |
| Swell Peak Period Direction (°) | 255.9 |
| % Swell | 4.8 |
Wave Spectra for date 31/03/2025 23:00(i):
| Frequency (Hz) | Period (s) | Normalised Energy | Energy |
|---|---|---|---|
| 0.055 | 18.2 | 0.01 | 0.02 |
| 0.075 | 13.3 | 0.038 | 0.075 |
| 0.095 | 10.5 | 0.09 | 0.177 |
| 0.115 | 8.7 | 0.023 | 0.045 |
| 0.135 | 7.4 | 0.041 | 0.08 |
| 0.145 | 6.9 | 0.118 | 0.23 |
| 0.155 | 6.5 | 0.181 | 0.354 |
| 0.165 | 6.1 | 0.315 | 0.615 |
| 0.175 | 5.7 | 0.631 | 1.233 |
| 0.18 | 5.6 | 0.533 | 1.043 |
| 0.185 | 5.4 | 0.441 | 0.863 |
| 0.19 | 5.3 | 0.901 | 1.762 |
| 0.195 | 5.1 | 1 | 1.956 |
| 0.2 | 5 | 0.568 | 1.11 |
| 0.205 | 4.9 | 0.342 | 0.67 |
| 0.21 | 4.8 | 0.357 | 0.699 |
| 0.215 | 4.7 | 0.46 | 0.9 |
| 0.225 | 4.4 | 0.321 | 0.629 |
| 0.235 | 4.3 | 0.17 | 0.332 |
| 0.245 | 4.1 | 0.115 | 0.225 |
| 0.255 | 3.9 | 0.185 | 0.362 |
| 0.275 | 3.6 | 0.085 | 0.166 |
| 0.295 | 3.4 | 0.09 | 0.177 |
| 0.315 | 3.2 | 0.09 | 0.177 |
| 0.335 | 3 | 0.126 | 0.245 |
| 0.415 | 2.4 | 0.029 | 0.056 |
| 0.495 | 2 | 0.015 | 0.029 |
