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.
Read more about tides →

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.
Read more about surges →

      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.
Map: UK National Tide Gauge Network | South Atlantic Network

Latest news

UK Met Office has adapted NEMO as the Operational Storm Surge Forecast Model. NTSLF will display these ouputs from Apr 2020.

The highest tides in 18.6 years occurred 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 NTSLF: What resources, how you use them, why are they important?
Please send letters to: NTSLF, National Oceanography Centre, 6 Brownlow Street, Liverpool L3 5DA or

Liverpool Tides

Liverpool tide plot

Liverpool predictions 28 days.
Tide tables July & August.
Met station.

Southampton Tides