This is going to be a difficult pick given how destructive natural disasters are. Be it landslides, tsunami or series of floods, I don't think anyone is better off than others. They all are dangerous and can pose and take the lives of thousands depending on the situation. But an earthquake is something to really worry about.
When a tsunami hits, people who almost get affected immediately are those riverside communities living close to waters from which the disaster came through. This means that certain far part of the cities might not be affected given it's limited range. I think the same goes with floods and landslides.
The options that I think are more destructive from your question will have to be wild fire and volcanic eruptions. This two natural disasters might not necessarily have a stopping range. They can keep on going until whatever started them stops, or when there's no more weapons in their arsenal.
A wildfire just keeps on burning anything on it's part, so long as there's something to burn, It just keeps on going. It takes a lot of effort to stop a wild fire from destruction. A wildfire that once started out in the united states took months to bring it under control.
A volcano on the other hand is probably one of the most powerful natural disaster ever. When an eruption occurs, a lot of destruction follows. Before the actual eruption, a volcano spits volumes of sulphur and other harmful chemical substances into the air which makes the air less breathable and can very well harm living things.
The second stage starts by blowing up and sending huge rocks on fire into the air and to different directions. Some of these rocks can stretch more than 15 miles away as recorded from previous eruptions. Hence, the volcanic eruption isn't the actual problem, but the after effect of the eruption are. The crazy part is that all of these steps during the eruption process eventually leads to series of other disasters. This is because a lot of movements has been made on the earth's crust. These movements have the power to start up different other disasters like flooding, earthquakes, tsunami and others. So, I think a volcanic eruption is the mother of all natural disasters.