Flood Alert
Flooding is possible. Be prepared and keep checking the official forecast and warning.
Check current Environment Agency flood alerts and warnings in England.
Enter a full England postcode to check current Environment Agency flood alerts and warnings.
Waiting for data
No current Environment Agency flood alerts or warnings are in force.
England only. The map shows current warning areas, not every place that could flood.
Community report
Tell other visitors where the flooding is and what you can see. This form does not contact the emergency services. Move to a safe place and call 999 if there is danger.
Important safety information
Flooding is possible. Be prepared and keep checking the official forecast and warning.
Flooding is expected. Act now, protect people and property, and follow emergency-service advice.
There is danger to life. Move to safety and follow instructions from the emergency services.
How the result works
The checker gets the centre point of the full postcode from postcodes.io.
An hourly scheduled job gets active flood alerts and warnings and their area polygons from the Environment Agency.
The postcode point is tested against every active warning polygon, with the most severe matching warning shown first.
Common questions
No. It shows warnings currently issued by the Environment Agency. A place can have long-term risk even when no warning is in force.
No. This Environment Agency warning feed covers England. Wales, Scotland and Northern Ireland have separate official flood-warning services.
Not completely. Localised surface-water flooding can happen away from a mapped warning area or before a warning is issued.
The Environment Agency flood-warning API is updated every 15 minutes. GB Maps refreshes its local warning cache once each hour.
The checker uses the postcode centre point. Flood-warning boundaries can cross streets and postcodes, so always read the official warning and follow local advice.
Community updates
These reports are submitted by visitors and are not verified by GB Maps, the Environment Agency, or the emergency services.
This uses Environment Agency flood and river level data from the real-time data API (Beta), under the Open Government Licence. Postcode locations: postcodes.io. Base map: OpenStreetMap contributors. Environment Agency API documentation.