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4Warning no Longer in ForceThe warning is no longer in force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 Apr, 2026

3


Dorset Council Groundwater flooding in the West of Dorset

3


East Riding of Yorkshire North Sea coast at Bridlington

3


Hampshire, Wiltshire Groundwater flooding in the Salisbury Plain area

3


Oxfordshire, West Berkshire Groundwater flooding in the Lambourn Valley catchment

3


Hampshire Groundwater flooding in the Alton area

3


West Berkshire Groundwater flooding in the Great Shefford area

3


West Berkshire Groundwater flooding in West Ilsley, East Ilsley, Compton, Chilton and West Hagbourne
BSI Membership Badge - Flood Dr
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