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: 1101907
Deaths: 0
Displaced: 100
Region: Griffin
Countries: United States
From - To 24 Mar - 28 Mar
Known identifiers for this event:

GDACS Score

For more info on GDACS alert score click here.

Impact Assessement as of 28-03-2023

SENDAI Indicator B N Country Location Info
affected 1 United States Fordland
displaced 100 United States Griffin
rescued 2 United States Fordland

Satellite Observation

Satellite-based Flood extent provided by GLOFAS
Overall of the satellite-based flooded area from / to : 2023-03-17 / 2023-04-04  

Friday 17/03Saturday 18/03Sunday 19/03Monday 20/03Tuesday 21/03Wednesday 22/03Thursday 23/03Friday 24/03Saturday 25/03Sunday 26/03Monday 27/03Tuesday 28/03Wednesday 29/03Thursday 30/03Friday 31/03Saturday 01/04Sunday 02/04Monday 03/04Tuesday 04/04

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 24 Mar 2023 26 Mar 2023 GLOFAS
2 0 deaths and 100 displaced 26 Mar 2023 28 Mar 2023 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.