Most travellers will never experience a major natural disaster abroad. Of those who do, the overwhelming majority will be inconvenienced rather than harmed. But the gap between "fine" and "very much not fine" is almost always the first 10 minutes – what you do, where you go, and what you don't do. That gap closes with about 20 minutes of pre-trip reading.

Earthquakes

The most common serious natural disaster affecting travellers, and the one where instinct most often fails. Almost every earthquake death and serious injury comes from one of three causes: falling debris, building collapse, or running outside through the wrong door at the wrong time.

The 30 seconds during the shaking:

The hour after:

Tsunamis

Tsunamis kill more travellers than earthquakes themselves in coastal regions, and the warning windows are short – sometimes minutes. The rules are blunt:

Hurricanes, typhoons, and cyclones

Different names, same weather system. The good news: unlike earthquakes, you usually have days of warning. The mistake travellers make is assuming "days of warning" means "plenty of time to wait and see".

In the 72–48 hours before landfall:

In the 24 hours before landfall:

During landfall: stay in your shelter. Don't go outside during the eye – the second half of the storm hits from the opposite direction and is often worse than the first.

Floods and flash floods

Flash floods kill more people in many countries than any other natural disaster, and they kill almost exclusively because people misjudge water depth and current. Six inches of moving water can knock an adult over. Two feet can carry a car downstream. The water always looks shallower than it is, and the current always feels stronger than it looks.

The rules:

Wildfires

The risk profile for wildfires has changed dramatically over the past decade. Regions that historically didn't burn – southern Europe, parts of the UK, Canada – now do, often suddenly and severely.

The early warning signs travellers miss: persistent smoke smell, smoke visible on the horizon, ash falling from the sky, sudden temperature drops with darkening sky, animals moving in unusual numbers in one direction. Any of these means leave the area now, not later.

If you're caught:

Volcanoes

Most volcano-related travel incidents involve respiratory problems from ash and gas, not lava. Lava moves slowly enough to outwalk; ash and pyroclastic flows don't.

If a volcano in your area shows activity, leave the exclusion zone immediately and don't return for "one last look". If you can't leave:

The pre-trip preparation that ties this together

Five minutes per disaster type, before you travel:

Disasters rarely catch travellers because they were unprepared in some sophisticated way. They catch them because they were unprepared in predictable ways: no shelter plan, no offline map, no warning, no idea where higher ground was. Twenty minutes of preparation eliminates most of it.