Overall Green alert Flood
in United States

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: 1100367
Deaths: 1
Displaced: 1050
Region: Alabama, Kentucky, Oregon, Tennessee, Virginia, Washington, Umatilla County, Thurston County
Countries: United States
From - To 04 Feb - 04 Feb
Known identifiers for this event:

GDACS Score

For more info on GDACS alert score click here.

Impact Assessement as of 04-02-2020

SENDAI Indicator A N Country Location Info
death 1 United States Umatilla County
SENDAI Indicator B N Country Location Info
displaced 50 United States Umatilla County
displaced 1000 United States Thurston County
rescued 21 United States Umatilla County

Satellite Observation

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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 5 deaths and 900 displaced 04 Feb 2020 04 Feb 2020 FloodList
2 1 deaths and 1050 displaced 04 Feb 2020 04 Feb 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.