[Pyro7480]

Anyone know what the highest death toll for a natural disater was in the past 100 yrs?

It was from the same region 34 years ago, according to this website. (The tropical cyclone that struck the Bay of Bengal region, killing half a million)

[Jeff Head]

In recorded history, accroding to that site, we have this:

The deadliest earthquake in history hit the eastern Mediterranean in July 1201. Approximately 1.1 million people were killed, mostly in Egypt and Syria. This earthquake claimed the most lives of any other natural disaster in recorded history.

[KC_Conspirator]

China had a earthquake in 1976 that killed up to half a million people.

[cogitator]

That (the Bangladesh cyclone), the 1976 China quake, and the 1988 Spitak quake are the modern "leaders" in this category.

[JSloth]

Largest estimated death tolls are both from China (1556 AD and 1976 AD. Although official death from the July 1976 quake is around 250,000, unofficial estimates are over 600,000.