Early warning systems detect and report threats from natural disasters at an early stage. They use satellites, sensors, weather models, seismographs, or siren systems.

Typical examples:

Behavior guidelines:

1. Prevention: Construct houses according to recommendations (earthquake safety, flood protection).
2. Observe warnings: Take official instructions seriously, use radio/apps.
3. Evacuation: Know emergency exits and safe routes.
4. Emergency kit: Ready water, food, flashlight, and important documents.
5. After the disaster: Care for injured people, wait for emergency messages

Regular drills (e.g., in schools or businesses) help to react correctly in an emergency.