Typhoon Ketsana hit the Philippines on Sept. 26, with the resulting floods affecting tens of thousands of people and forcing the Philippines to appeal for international aid.

On Sept. 29, the storm slammed into Vietnam and Cambodia. It weakened into a tropical low pressure system and moved into Laos that night.

The typhoon killed 400 and displaced half a million people across Southeast Asia.

Another, less powerful typhoon, Parma, belted the Philippines on Oct. 3, causing further deaths.

The typhoon brought on relentless rains, which set off landslides in the mountains and swell rivers and reservoirs, forcing dams to release water and flooding areas downstream.