National Network of Regional Coastal Monitoring Programmes
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Wave Spectra for 21/04/2026 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.
North Well
Wave Spectra for 21/04/2026 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 (21/04/2026 23:00(i) GMT) | |
|---|---|
| Significant Wave Height (m) | 0.9 |
| Wave zero up crossing period (Spectrum Tz) (s) | 4 |
| Wind Wave Significant Wave Height (m) | 0.9 |
| Wind Wave Peak Period (s) | 4.3 |
| Wind Wave Peak Period Direction (°) | 55 |
| Swell Significant Wave Height (m) | 0.02 |
| Swell Peak Period (s) | 11.1 |
| Swell Peak Period Direction (°) | 319.2 |
| % Swell | 0.1 |
Wave Spectra for date 21/04/2026 23:00(i):
| Frequency (Hz) | Period (s) | Normalised Energy | Energy |
|---|---|---|---|
| 0.09 | 11.1 | 0.003 | 0.001 |
| 0.11 | 9.1 | 0.01 | 0.004 |
| 0.13 | 7.7 | 0.105 | 0.049 |
| 0.15 | 6.7 | 0.5 | 0.231 |
| 0.17 | 5.9 | 0.511 | 0.236 |
| 0.18 | 5.6 | 0.658 | 0.304 |
| 0.19 | 5.3 | 0.568 | 0.263 |
| 0.2 | 5 | 0.882 | 0.408 |
| 0.21 | 4.8 | 0.533 | 0.247 |
| 0.215 | 4.7 | 0.671 | 0.311 |
| 0.22 | 4.5 | 0.73 | 0.338 |
| 0.225 | 4.4 | 0.882 | 0.408 |
| 0.23 | 4.3 | 1 | 0.463 |
| 0.235 | 4.3 | 0.939 | 0.434 |
| 0.24 | 4.2 | 0.778 | 0.36 |
| 0.245 | 4.1 | 0.592 | 0.274 |
| 0.25 | 4 | 0.522 | 0.241 |
| 0.26 | 3.8 | 0.432 | 0.2 |
| 0.27 | 3.7 | 0.405 | 0.188 |
| 0.28 | 3.6 | 0.328 | 0.152 |
| 0.29 | 3.4 | 0.266 | 0.123 |
| 0.31 | 3.2 | 0.271 | 0.125 |
| 0.33 | 3 | 0.11 | 0.051 |
| 0.35 | 2.9 | 0.092 | 0.043 |
| 0.37 | 2.7 | 0.058 | 0.027 |
| 0.45 | 2.2 | 0.025 | 0.012 |
| 0.53 | 1.9 | 0.011 | 0.005 |
