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4Warning no Longer in ForceThe warning is no longer in force

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 - 26 Apr, 2025



3


West Berkshire
Groundwater flooding in the Great Shefford area

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


Buckinghamshire, Oxfordshire
Groundwater flooding in the Henley and Assendon area

3


Hertfordshire
River Mimram in Hertfordshire
BSI Membership Badge - Flood Doctor
Achilles UVDB Stamp Silver Certification
CHAS accreditation