National Network of Regional Coastal Monitoring Programmes

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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.

Second Severn Crossing

Tide Levels and Harmonics

 

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Latest Tide Data (Predicted Tide Table)

Time (GMT)ElevationResidual
17-01-2025 08:3011.910.29
 Next HWNext LW
09:25, 12.49 16:10, 2.24
Date Highest 2025 Date Lowest 2025
01-01 13.36m 16-01 0.96m
Time (GMT)ElevationResidual
03-12-2024 00:005.04-0.57
02-12-2024 23:505.34-0.55
02-12-2024 23:405.64-0.53
02-12-2024 23:305.94-0.49
02-12-2024 23:206.25-0.47
02-12-2024 23:106.57-0.43
02-12-2024 23:006.87-0.43
02-12-2024 22:507.19-0.42
02-12-2024 22:407.52-0.4
02-12-2024 22:307.86-0.4
02-12-2024 22:208.2-0.41
02-12-2024 22:108.54-0.42
02-12-2024 22:008.89-0.44
02-12-2024 21:509.26-0.43
02-12-2024 21:409.65-0.42
02-12-2024 21:3010.03-0.4
02-12-2024 21:2010.42-0.35
02-12-2024 21:1010.79-0.31
02-12-2024 21:0011.18-0.22
02-12-2024 20:5011.53-0.14
02-12-2024 20:4011.8-0.09
02-12-2024 20:3012.080.01
02-12-2024 20:2012.30.1
02-12-2024 20:1012.430.15
02-12-2024 20:0012.50.19
02-12-2024 19:5012.480.19
02-12-2024 19:4012.40.19
02-12-2024 19:3012.270.19
02-12-2024 19:2012.080.18
02-12-2024 19:1011.860.18
02-12-2024 19:0011.60.19
02-12-2024 18:5011.310.2
02-12-2024 18:4010.980.2
02-12-2024 18:3010.650.22
02-12-2024 18:2010.280.23
02-12-2024 18:109.930.27
02-12-2024 18:009.530.29
02-12-2024 17:509.150.33
02-12-2024 17:408.740.36
02-12-2024 17:308.320.38
02-12-2024 17:207.90.41
02-12-2024 17:107.480.43
02-12-2024 17:007.080.49
02-12-2024 16:506.670.53
02-12-2024 16:406.310.63
02-12-2024 16:305.910.67
02-12-2024 16:205.570.77
02-12-2024 16:105.230.86
02-12-2024 16:004.860.91
02-12-2024 15:504.460.89
02-12-2024 15:404.040.84
02-12-2024 15:303.60.73
02-12-2024 15:203.180.62
02-12-2024 15:102.830.53
02-12-2024 15:002.510.42
02-12-2024 14:502.140.22
02-12-2024 14:401.830.03
02-12-2024 14:301.69-0.05
02-12-2024 14:201.69-0.03
02-12-2024 14:101.780.02
02-12-2024 14:001.870.02
02-12-2024 13:502.040.05
02-12-2024 13:402.20.03
02-12-2024 13:302.420.04
02-12-2024 13:202.61-0.03
02-12-2024 13:102.85-0.06
02-12-2024 13:003.1-0.1
02-12-2024 12:503.33-0.18
02-12-2024 12:403.58-0.25
02-12-2024 12:303.87-0.28
02-12-2024 12:204.14-0.32
02-12-2024 12:104.42-0.36
02-12-2024 12:004.71-0.38
02-12-2024 11:504.99-0.4
02-12-2024 11:405.29-0.41
02-12-2024 11:305.59-0.4
02-12-2024 11:205.89-0.39
02-12-2024 11:106.19-0.39
02-12-2024 11:006.5-0.37
02-12-2024 10:506.81-0.37
02-12-2024 10:407.12-0.37
02-12-2024 10:307.46-0.36
02-12-2024 10:207.78-0.38
02-12-2024 10:108.11-0.39
02-12-2024 10:008.46-0.41
02-12-2024 09:508.8-0.44
02-12-2024 09:409.16-0.45
02-12-2024 09:309.56-0.43
02-12-2024 09:209.95-0.41
02-12-2024 09:1010.35-0.38
02-12-2024 09:0010.75-0.32
02-12-2024 08:5011.12-0.28
02-12-2024 08:4011.49-0.2
02-12-2024 08:3011.82-0.13
02-12-2024 08:2012.09-0.08
02-12-2024 08:1012.33-0.02
02-12-2024 08:0012.540.07
02-12-2024 07:5012.660.12
02-12-2024 07:4012.720.17
02-12-2024 07:3012.710.2
02-12-2024 07:2012.620.19
02-12-2024 07:1012.50.21
02-12-2024 07:0012.310.21
02-12-2024 06:5012.090.23
02-12-2024 06:4011.830.25
02-12-2024 06:3011.560.29
02-12-2024 06:2011.250.32
02-12-2024 06:1010.910.34
02-12-2024 06:0010.530.36
02-12-2024 05:5010.130.37
02-12-2024 05:409.720.39
02-12-2024 05:309.310.42
02-12-2024 05:208.90.46
02-12-2024 05:108.440.45
02-12-2024 05:0080.48
02-12-2024 04:507.540.48
02-12-2024 04:407.120.54
02-12-2024 04:306.720.6
02-12-2024 04:206.320.66
02-12-2024 04:105.940.74
02-12-2024 04:005.570.81
02-12-2024 03:505.210.88
02-12-2024 03:404.820.91
02-12-2024 03:304.390.87
02-12-2024 03:203.950.8
02-12-2024 03:103.520.7
02-12-2024 03:003.110.6
02-12-2024 02:502.80.54
02-12-2024 02:402.480.44
02-12-2024 02:302.120.24
02-12-2024 02:201.840.08
02-12-2024 02:101.740.04
02-12-2024 02:001.740.06
02-12-2024 01:501.810.1
02-12-2024 01:401.920.12
02-12-2024 01:302.070.13
02-12-2024 01:202.240.13
02-12-2024 01:102.440.12
02-12-2024 01:002.630.08
02-12-2024 00:502.860.04
02-12-2024 00:403.09-0.01
02-12-2024 00:303.32-0.07
02-12-2024 00:203.58-0.13
02-12-2024 00:103.84-0.18