National Tidal and Sea Level Facility

(NTSLF) is the UK centre of excellence for sea level monitoring, coastal flood forecasting and the analysis of sea level extremes.

It is the focus for sea level research in the UK and for its interpretation into advice for policy makers, planners and coastal engineers.

Tides and storm surges

Tides are the predictable rise and fall of the sea surface as the earth rotates while the moon’s gravity (as well as the sun’s) pulls on the oceans.
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Storm surges are caused by the weather, especially low pressure systems (inverse barometer effect), strong winds and the earth’s rotation (forcing water towards the coast). Surges are in addition to tides, and computer models can forecast their combined levels alongside weather forecasts.
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      Interactive map of tide gauge networks

Use the map to find tide gauge measurements, tidal predictions and storm surge forecasts. Click the markers to see a summary of information available for each site.
UK National Tide Gauge Network | South Atlantic Network

Latest news

The highest tides in 18.6 years occur during 19–30 September 2015 due to the moon’s nodal cycle (video).

Read about the storm surges during Dec 2013 and Jan 2014.

Support the NTSLF – tell us how you use NTSLF’s resources, and why they’re important to you.
Please send letters to: NTSLF, National Oceanography Centre, 6 Brownlow Street, Liverpool L3 5DA or

Liverpool Tides

Liverpool tide plot

Tidal predictions at Liverpool (next 28 days).
Liverpool tide tables for September & October.

Southampton Tides