Natural disasters seem to be quite concentrated, more than half of all deaths during 1980-2017 have occurred in the same five countries and four of those five are in Asia. It is not possible to differentiate to smaller regions (like S.E. Asia, East Asia etc.) because a single tsunami or earthquake affects several regions at once.
The earthquake in Haiti seem to be the most deadly disaster for a single country, which makes up more than half of total deaths in Americas.
What: Deaths due to natural disasters
Where: 194 countries and regions
Source: Institute for Health Metrics and Evaluation