Understand crises
One reflex, different risks
Pick a hazard: its warning signs, the right actions and official sources all show in one place. You can set your country at the top right.
Choose a hazard
Flood
River overflow, runoff, coastal surge. The most common natural hazard in Europe.
The right actions
- Never enter a flooded road, on foot or by car.
- Move to higher ground; turn off gas and electricity.
- Follow weather and flood warnings.
Where to get official information
Learn more about this hazardWildfire
Fires driven by drought and wind, spreading to new regions.
The right actions
- Clear vegetation around your home.
- Shelter inside a solid building; close all openings.
- Never go back for a vehicle.
Where to get official information
Learn more about this hazardStorm
Violent winds, falling trees and network outages.
The right actions
- Bring in objects that could be blown away.
- Stay sheltered, away from windows.
- Do not work on roofs during the event.
Where to get official information
Learn more about this hazardHeatwave
Intense, prolonged heat, dangerous for vulnerable people.
The right actions
- Drink regularly; stay cool during the hottest hours.
- Check on isolated people.
- Never leave a child or pet in a vehicle.
Where to get official information
Learn more about this hazardIndustrial hazard
Accident at an industrial site: toxic cloud, explosion, fire.
The right actions
- Shelter indoors; close doors and ventilation.
- Do not collect children from school.
- Listen to public-service radio.
Where to get official information
Learn more about this hazardCyberattack
Ransomware, phishing, digital service outages.
The right actions
- Back up your data offline and regularly.
- Beware of unexpected messages and attachments.
- Keep devices and passwords up to date.
Where to get official information
Learn more about this hazardNetwork outage
Prolonged loss of electricity, water, telecoms or fuel.
The right actions
- Keep a torch, a battery radio and water.
- Keep some cash in small notes.
- Preserve your phone battery.
Where to get official information
Learn more about this hazardHealth crisis
Epidemic or contamination affecting public health.
The right actions
- Follow health-authority guidance.
- Keep a small reserve of your usual medicines.
- Apply recommended protective measures.
Where to get official information
Learn more about this hazardOfficial sources in your country
For risk maps and reference information, rely on your country's official sources:
Last reviewed: July 2026