About Centinela

Centinela watches natural hazards in 29 cities around the world, plus 9 more it keeps an eye on: floods, heavy rain, unstable ground, and earthquakes. It checks real measurements all day, every day, and turns them into a simple risk level for each place: Low, Warning, Danger, or Critical.

Everything you see comes from real data. River levels come from a global river model. Rain and air quality come from weather services. Earthquakes come from the United States Geological Survey, usually within minutes of happening. When something on this site is simulated for a demonstration, it is always labeled SIMULATED.

What you can do here

Pick your city to see its current risk, a map, recent earthquakes nearby, and what to do if things get worse. The advice is written in your language, and you can listen to it out loud. If you turn on alerts for your city, your phone gets a notification when the risk level rises.

Install it like an app

You can add Centinela to your phone or computer so it opens from an icon, like any app. On Android or a desktop browser, use the Install app button when it appears. On iPhone, tap the Share button and choose Add to Home Screen. Once installed, it still opens and shows the last information you saw even if you briefly lose signal.

What Centinela is not

Centinela is a demonstration project, not a government warning system. Its risk levels come from our own model, and that model can be wrong. In any emergency, follow your local civil protection authority first.

Some places say N.A.M.

N.A.M. means Not Actively Monitored. For those places we look at public records of past earthquakes and river behavior, but we do not measure their risk around the clock yet, so they have no alerts.

Curious how it works under the hood? See the technology page. Unsure about a word? See the glossary.