FLOOD

Flood near Siena, Italy

Latest update
Map: Flood near Siena, Italy

GDACS has tracked this flood near Siena, Italy since October 7, 2026, 15 days as of its latest update on October 22. It carries a GREEN alert: limited humanitarian impact expected.

TypeFlood
GDACS alertGreen
CountryItaly
SinceOct 7, 2026
Tracked for15 days
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Reported impacts

Detected by GLOFAS (the Global Flood Awareness System of the EU Copernicus programme).

Why floods happen

River floods build over days as heavy rain or snowmelt fills a basin faster than its rivers can drain it; flash floods strike within hours of intense rain. Floods affect more people worldwide than any other natural hazard.

Seen from space

Satellite picture, Before · October 7, 2026
Before · October 7, 2026
Satellite picture, Latest · October 22, 2026
Latest · October 22, 2026

False color from MODIS on NASA’s Terra satellite (bands 7-2-1), which makes water stand out: rivers, lakes and flooded land are dark blue, vegetation is bright green, bare ground is brown, and clouds are pale cyan. The ring marks where the event was reported. Pictures: NASA Worldview (GIBS) from the daily satellite passes; clouds can hide the ground on some days.

GDACS report. Source: GDACS, the Global Disaster Alert and Coordination System of the United Nations and the European Commission (CC BY 4.0).

Did you know?

Pakistan, 2022. In 2022, monsoon floods in Pakistan affected more than 33 million people.

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