Overall Green alert Flood
in United Kingdom

Flood impact summary

This flood is expected to have a low humanitarian impact based on the magnitude and the affected population and their vulnerability.

GDACS ID: 1100705
Deaths: 0
Displaced: 5568
Region: England, North Yorkshire, Norfolk, Oxfordshire, Northamptonshire, Bedford
Countries: United Kingdom
From - To 17 Dec - 24 Dec
Known identifiers for this event:


For more info on GDACS alert score click here.

Impact Assessement as of 24-12-2020

SENDAI Indicator B N Country Location Info
displaced 18 United Kingdom Notter Bridge Park
displaced 400 United Kingdom Norfolk
displaced 150 United Kingdom Oxfordshire
displaced 5000 United Kingdom Bedford
rescued 1 United Kingdom Usk
rescued 1100 United Kingdom Northamptonshire
rescued 5 United Kingdom North Yorkshire

Satellite Observation


Timeline of revisions

For accessing reports of previous advisories, please click on the advisory number in the table below.

IDAlert ColorPopulation affectedStart DateEnd DateSource
1 0 deaths and 18 displaced 17 Dec 2020 21 Dec 2020 FloodList
2 0 deaths and 5550 displaced 24 Dec 2020 24 Dec 2020 FloodList

Flood polygons

This polygon (translucent blue with a blue border) is drawn by the analysts recording the flood event. It is meant to include all the areas reported as affected, by official source or the media. It does not represent the area actually under water.

Microwave flood detection

Flooded area, as detected in microwaves by the Global Flood Detection System of the JRC, based on NASA TRMM/GPM observations. This system has a rather low resolution (of 5-10km) but is not affected by clouds.
For more details, see http://www.unisdr.org/files/9622_LBNA23303ENC002.pdf.
The areas with a flood signal along the coast are an artefact of the system and should not be considered.

Optical Flood detection

Flooded area as detected in optical wavelengths by NASA/MODIS, known as "MODIS Flood Product". Data are made available by NASA GSFC Flood Mapping Project, http://oas.gsfc.nasa.gov/floodmap/index.html. Resolution of 250m, heavily affected by cloud cover.