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4Warning no Longer in ForceThe warning is no longer in force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 - 31 Mar, 2025

3


Oxfordshire, West Berkshire River Pang from East Ilsley to Pangbourne and Sulham Brook

4


County Durham, Hartlepool, North Tyneside, South Tyneside, Sunderland Tyne and Wear coast

3


Suffolk The Suffolk coast at Southwold

3


Suffolk The tidal Deben estuary

4


North Yorkshire, Redcar and Cleveland North Sea coast from Staithes to Whitby including tidal River Esk

3


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

3


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

3


West Sussex Climping Seafront

4


East Riding of Yorkshire North Sea coast at Bridlington

3


West Sussex Thorney Island to West Itchenor

3


West Sussex Tidal areas of Littlehampton Rope Walk

3


Cornwall South Cornwall coast from Gribbin Head to Rame Head

3


Cornwall South Cornwall coast from Lizard Point to Gribbin Head excluding the Tidal Fal Estuary

3


City of Bristol, North Somerset, South Gloucestershire Tidal River Avon at Bristol, Pill and Shirehampton

3


Devon North Devon coast from Hartland Point to Lynmouth

3


Halton, Warrington Mersey Estuary at Warrington

3


Greater London, Richmond upon Thames River Thames at Trowlock Island

3


Lancashire, Westmorland and Furness Coast at North Morecambe Bay

3


Cumberland Coast from Gretna to Silloth

3


Lancashire Wyre estuary from Fleetwood and Knott End to Little Eccleston

3


Lancashire Lune estuary south west of Lancaster

3


Norfolk The north Norfolk coast from Old Hunstanton, to and including Cley

4


East Riding of Yorkshire North Sea coast at Hornsea

4


East Riding of Yorkshire North Sea coast at Skipsea, Hornsea and Mappleton

4


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

3


Gloucestershire Severn estuary from Gloucester to Sharpness

3


Gateshead, Newcastle upon Tyne, North Tyneside, South Tyneside Tyne estuary

4


Northumberland Northumberland coast

3


Hampshire, West Sussex Langstone to Emsworth Harbour

3


Cornwall North Cornwall coast from Lands End to Chapel Porth

3


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

3


North Somerset, Somerset Somerset coast at Minehead, Bridgwater, Burnham-on-Sea and Uphill to Kingston Seymour

3


North Somerset Somerset coast at Clevedon

4


Norfolk Coast from Heacham to north of King's Lynn in Norfolk

4


Norfolk Hunstanton coast in Norfolk

3


City of Bristol, North Somerset Somerset coast at Portishead and Portbury Dock

4


Norfolk King's Lynn, West Lynn and The Wash frontage in Norfolk

3


Doncaster, East Riding of Yorkshire, North Lincolnshire, North Yorkshire Tidal River Ouse, Don and the Dutch River catchment

3


Gloucestershire Wye Estuary in Gloucestershire

3


Cornwall Tidal Camel Estuary at Rock and low lying properties on the Little Petherick Creek

2


Gloucestershire Wye Estuary at Brockweir

4


Cheshire West and Chester, Wirral Irish Sea from Hilbre Island to Heswall

4


East Riding of Yorkshire Humber estuary from Hessle Haven to Faxfleet

4


East Riding of Yorkshire Humber estuary from Spurn Point to Winestead Outfall

4


Warrington Mersey Estuary at Arpley Bridge, Warrington

3


Kent Coast from Ramsgate to Kingsdown

3


East Sussex, Kent Coast from Sandgate to Dungeness

3


Thurrock The Essex coast at Coalhouse Fort

3


Kent Coast from St Margaret's at Cliffe to Sandgate

3


East Sussex, Kent Coast from Fairlight to Dungeness including the Tidal Rother

3


Lincolnshire, North East Lincolnshire, North Lincolnshire Tidal flooding near the South Humber Bank from Barton Upon Humber to Humberston

3


North Lincolnshire Tidal flooding near the South Humber Bank from Whitton to South Ferriby

3


Norfolk The Norfolk coast from Eccles on Sea, to and including, Winterton-on-Sea

4


East Riding of Yorkshire North Bank of the Humber estuary at Hessle Haven

4


East Riding of Yorkshire North Sea coast at Bridlington - Harbour Road and Floral Pavilion

4


East Riding of Yorkshire North Sea coast at Easington and Kilnsea

4


East Riding of Yorkshire North Sea coast at Bridlington - South Pier

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

3


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

4


Somerset Somerset coast at Porlock Weir

4


North Yorkshire North Sea and River Esk at Whitby Harbour

2


North Lincolnshire River Trent at Alkborough Flats

4


Cheshire West and Chester, Wirral Dee Estuary from Parkgate to Chester

3


Kent Isle of Sheppey and coast from Kemsley to Seasalter

3


Suffolk The Suffolk coast from Lowestoft to Bawdsey

4


East Riding of Yorkshire North Bank of the Humber estuary from Kilnsea to Skeffling and Weeton

3


Kent Coast from Whitstable to Margate

3


Kent, Medway Tidal Medway, Medway estuary and Isle of Grain

3


Bexley, Greater London, Kent, Medway Coast from Dartford to Allhallows

3


West Berkshire River Lambourn and its tributaries from Upper Lambourn down to Newbury

3


Kent, Medway Lower River Medway

3


Hampshire, Wiltshire Groundwater flooding in the Salisbury Plain area

3


West Berkshire Groundwater flooding in the Great Shefford area

3


Oxfordshire, West Berkshire Groundwater flooding in the Lambourn Valley catchment

3


Hampshire Groundwater flooding in the Candovers and Old Alresford

3


Hertfordshire Groundwater flooding in Flamstead

3


Hertfordshire Groundwater flooding in Kimpton and Lilley Bottom

3


West Berkshire Groundwater flooding in West Ilsley, East Ilsley, Compton, Chilton and West Hagbourne

3


Hampshire Groundwater flooding in Hursley

3


Hampshire, Wiltshire Groundwater flooding in villages surrounding Andover

3


Hampshire Groundwater flooding in Deane and Ashe in North Hampshire

3


Buckinghamshire, Oxfordshire Groundwater flooding in the Henley and Assendon area

3


Hertfordshire River Mimram in Hertfordshire

3


West Berkshire Groundwater flooding in the Leckhampstead area

3


Cambridgeshire, Lincolnshire, Norfolk, Peterborough Areas near the tidal River Welland, tidal River Nene, and the Wash

3


Lincolnshire, North East Lincolnshire Tidal flooding of areas near the Lincolnshire coastline

4


Norfolk Precautionary Evacuation Notice area at Snettisham seafront

4


Norfolk Precautionary Evacuation Notice area at Heacham seafront

2


Norfolk The north Norfolk coast at Salthouse and east Cley

4


Norfolk Precautionary Evacuation Notice area at Hunstanton

2


Norfolk The north Norfolk coast at Wells Quay

2


Kent Coast at St Margaret's at Cliffe, Dover, Folkestone and Sandgate

2


East Sussex, Kent Coast from Littlestone Golf Course to Dungeness

2


West Sussex Bosham and West Itchenor
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