Flood Warning & Alert Types

 
ImageLevelNameMeaning
1Severe Flood WarningSevere Flooding, Danger to Life.
2Flood WarningFlooding is Expected, Immediate Action Required.
3Flood AlertFlooding is Possible, Be Prepared.
4Warning no Longer in ForceThe warning is no longer in force
*Sources updated daily from the Environment Agency's API: https://environment.data.gov.uk/flood-monitoring/id/floods.

Flood level warnings are categorised in severity by a numbering system as shown in the table above. The highest type of flood alert is 1, whereas the lowest type of flood notice is 4.

Flood Alerts, Warnings & Notices - 11 Oct, 2026

3


Cumberland Upper River Derwent, Stonethwaite Beck and Derwent Water

4


Greater London, Hammersmith and Fulham, Hounslow, Richmond upon Thames, Wandsworth Tidal Thames riverside from Putney Bridge to Teddington Weir

3


Norfolk Hunstanton coast in Norfolk

3


Somerset Somerset coast at Porlock Weir

4


City of London, Greater London, Greenwich, Hammersmith and Fulham, Kensington and Chelsea, Lambeth, Lewisham, Newham, Southwark, Tower Hamlets, Wandsworth, Westminster Tidal Thames riverside from the Thames Barrier to Putney Bridge

4


East Riding of Yorkshire North Sea coast at Withernsea, Easington and Kilnsea

4


Norfolk, Suffolk The tidal River Waveney from Ellingham to Breydon Water

4


Norfolk The tidal River Yare from Thorpe St Andrew to Breydon Water

3


Suffolk The tidal Deben estuary

3


Essex, Suffolk The Suffolk and Essex coast from Felixstowe to Clacton including Orwell and Stour estuaries

3


Essex The Essex coast from Clacton to and including, St Peters Flat and the Colne and Blackwater estuaries

3


Norfolk The tidal Rivers Bure, Ant and Thurne

4


Thurrock The Essex coast at Coalhouse Fort

4


Suffolk The Suffolk coast from Lowestoft to Bawdsey

4


Suffolk The Suffolk coast at Southwold

4


Essex, Southend-on-Sea The Essex coast from St Peters Flat to and including Shoeburyness and the Crouch and Roach estuaries
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