National Network of Regional Coastal Monitoring Programmes

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Note that these are real-time data and are not quality-controlled.

Second Severn Crossing

Tide Levels and Harmonics

 

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Latest Waves Data

Time (GMT)LatitudeLongitudeWave Height (m)Max Wave Height (m)Tpeak (s)Tz (s)Peak Direction (degrees)Spread (degrees)Sea Temp (°C)Energy Period (s)Wave Power (kW/m)
18-01-2026 19:30--0.020.0414.23.8-----
Date Highest Hs 2026 Storm Alert Threshold
(0.25 yr Return Period Hs)
11-01 1m 0.74m
Time (GMT)LatitudeLongitudeWave Height (m)Max Wave Height (m)Tpeak (s)Tz (s)Peak Direction (degrees)Spread (degrees)Sea Temp (°C)Energy Period (s)Wave Power (kW/m)
18-10-2025 00:00--0.060.1214.21.9-----
17-10-2025 23:30--0.010.0514.22.2-----
17-10-2025 23:00--0.030.0814.21.9-----
17-10-2025 22:30--0.070.1314.21.9-----
17-10-2025 22:00--0.080.135.81.9-----
17-10-2025 21:30--0.070.136.72-----
17-10-2025 21:00--0.060.1214.22.1-----
17-10-2025 20:30--0.060.1314.22.1-----
17-10-2025 20:00--0.050.0914.22-----
17-10-2025 19:30--0.060.1214.22-----
17-10-2025 19:00--0.070.1212.81.9-----
17-10-2025 18:30--0.080.1514.21.8-----
17-10-2025 18:00--0.120.2710.71.6-----
17-10-2025 17:30--0.150.238.51.6-----
17-10-2025 17:00--0.120.214.21.7-----
17-10-2025 16:30--0.090.1781.7-----
17-10-2025 16:00--0.090.1514.21.8-----
17-10-2025 15:30--0.080.1714.21.8-----
17-10-2025 15:00--0.090.1514.21.8-----
17-10-2025 14:30--0.10.1814.21.9-----
17-10-2025 14:00--0.110.1914.21.9-----
17-10-2025 13:30--0.110.1914.21.8-----
17-10-2025 13:00--0.120.1814.21.8-----
17-10-2025 12:30--0.110.1814.21.9-----
17-10-2025 12:00--0.10.1714.21.8-----
17-10-2025 11:30--0.080.1412.81.9-----
17-10-2025 11:00--0.070.1214.22-----
17-10-2025 10:30--0.050.1114.23-----
17-10-2025 10:00--0.060.1212.83.1-----
17-10-2025 09:30--0.080.1414.22.2-----
17-10-2025 09:00--0.070.1114.22.3-----
17-10-2025 08:30--0.060.0914.22.6-----
17-10-2025 08:00--0.060.114.22.8-----
17-10-2025 07:30--0.050.114.23-----
17-10-2025 07:00--0.070.1314.22.3-----
17-10-2025 06:30--0.070.1212.82.2-----
17-10-2025 06:00--0.10.1714.22-----
17-10-2025 05:30--0.130.2214.21.8-----
17-10-2025 05:00--0.130.2114.21.8-----
17-10-2025 04:30--0.110.1814.21.8-----
17-10-2025 04:00--0.080.1314.21.8-----
17-10-2025 03:30--0.070.1511.61.9-----
17-10-2025 03:00--0.070.1214.21.9-----
17-10-2025 02:30--0.080.1510.71.8-----
17-10-2025 02:00--0.090.1514.21.7-----
17-10-2025 01:30--0.10.175.81.8-----
17-10-2025 01:00--0.10.1710.71.7-----
17-10-2025 00:30--0.10.1614.21.7-----
17-10-2025 00:00--0.080.1414.21.7-----