Overall Green alert Flood for United States
in United States

Flood impact summary

Flood United States is expected to have a low humanitarian impact based on the magnitude and the affected population and their vulnerability.

GDACS ID: 1101633
Deaths: 1
Displaced: 420
Region: New York
Countries: United States
From - To 03 Sep - 13 Sep
Known identifiers for this event:


For more info on GDACS alert score click here.

Impact Assessement as of 14-09-2022

SENDAI Indicator A N Country Location Info
death 1 United States Jefferson County
SENDAI Indicator B N Country Location Info
displaced 250 United States Hooper Bay
displaced 170 United States Golovin
rescued 30 United States Jefferson County
rescued 12 United States Chicago
rescued 25 United States Elm Grove
rescued 3 United States Overton
SENDAI Indicator C N Country Location Info
houses 2 United States Jefferson County
houses 1 United States Providence
houses 1 United States Nome
SENDAI Indicator D N Country Location Info
roads 5 United States -
roads 7 United States New York
transport 4 United States New York
transport 12 United States Providence

Satellite Observation

Satellite-based Flood extent provided by GLOFAS
Overall of the satellite-based flooded area from / to : 2022-08-27 / 2022-09-20  

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 1 deaths 03 Sep 2022 05 Sep 2022 GLOFAS
2 0 deaths 05 Sep 2022 06 Sep 2022 GLOFAS
3 0 deaths 11 Sep 2022 12 Sep 2022 GLOFAS
4 0 deaths 11 Sep 2022 13 Sep 2022 GLOFAS
5 0 deaths 14 Sep 2022 15 Sep 2022 GLOFAS
6 0 deaths and 420 displaced 17 Sep 2022 18 Sep 2022 GLOFAS
7 0 deaths 13 Sep 2022 13 Sep 2022 GLOFAS

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.