Why Is Drought A Slow Onset Disaster?

Why Is Drought A Slow Onset Disaster? SLOW-ONSET DISASTERS relate to environmental degradation processes such as droughts and desertification, increased salinization, rising sea levels or thawing of permafrost. What is a slow onset disaster? SLOW-ONSET DISASTERS relate to environmental degradation processes such as droughts and desertification, increased salinization, rising sea levels or thawing of permafrost.