As long as you are in Japan, which has about 1,500 active faults, you are at risk of experiencing a major earthquake at any moment. It could come while you're at home or at your workplace, at a movie theater or in a subway. Wherever you are, you must stay calm and determine what to do next.

Disaster expert Takehiko Yamamura offers tips on what to do in the following cases:

If you are in a high-rise office building . . .