Implemented by the European Commission as part of the Copernicus Programme

Global Flood Awareness System (GloFAS)


Since 2018, the Global Flood Awareness System (GloFAS) is an operational system of the European Commission’s Copernicus Emergency Management Service, for forecasting and monitoring floods across the world.

GloFAS produces daily flood forecasts (GloFAS forecasts, since 2011) and monthly seasonal streamflow outlooks (GloFAS Seasonal, since November 2017).

In 2021, a new operational service for the automated, global, satellite-based monitoring of floods in near real-time (NRT) was integrated into GloFAS. The new global flood monitoring component of GloFAS is based on the automated processing of Sentinel-1 Synthetic Aperture Radar (SAR) satellite data, using an ensemble approach, based on three separate state-of-the-art satellite flood detection algorithms.

The aim of GloFAS is to complement relevant national and regional authorities and services, and to support international organizations in decision making and preparatory measures before major flood events (particularly in large trans-national river basins). GloFAS prediction only focuses on rivers and does not provide real-time forecast information on flash flood risk or coastal flooding, nor on inundated areas.

GloFAS data are freely accessible to all registered users through through a dedicated web platform, the GloFAS map viewer. Register here.

GloFAS map viewer and GloFAS products are tailored to give a quick overview of current and future hydro-meteorological situation, and of the ongoing and upcoming flood events. Additional information including detailed evolution of streamflow forecasts is provided at reporting points.
GloFAS forecasts are updated once per day while the satellite-based flood monitoring is continuously updated as soon as a new Sentinel-1 image is available.