Note these are the allowed disasters. Things like alien invasion are not allowed.

Global Disasters

Atmospheric Change
Effect: Gas emissions build up and change the atmosphere. This can stunt or speed up growth.
Example(s): None

Cosmic Dust Cloud
Effect: Can lower temperatures and blocks out the sun. Kills off photosynthetic lifeforms.
Example(s): None

Gamma Ray Burst
Effect: Kills off most macro of the life on the surface of the planet.
Example(s): Gen 100

Global Pandemic
Effect: A microbe kills off many diffrent species across the globe.
Example(s): NONE

Global Warming
Effect: Changes the biomes dramatically and kills off species who cannot adapt to the new warmer environment.
Example(s): NONE

Ice Age
Effect: Changes the biomes dramatically and kills off species who cannot adapt to the new colder environment.
Example(s): NONE

Ice Metor / Ice Comet
Effect: Causes sea levels to rise and mass flooding.
Example(s): Gen 14, Gen 125

Large Asteroid / Comet / Meteor Impact
Effect: Kills off many macro of the life on the surface of the planet. Creates large crater.
Example(s): NONE

Solar Flare
Effect: Kills off many macro of the life on the surface of the planet. Causes mass drought and super wildfires.
Example(s): Gen 8

Super Volcano
Effect: Kills off many macro of the life on the surface of the planet and can start an Ice Age.
Example(s): NONE

Regional Disasters

Asteroid / Comet / Meteor Impact
Effect: Kills off many macro of the life within a limited region. Creates small crater.
Example(s): Gen 123

Drought
Effect: Can causes all macro life to die in the region except for those who can live off little water. Can cause super wildfires.
Example(s): Gen 87

Flood
Effect: Can causes all macro life to die in the region except for those who can survive in a flooded environment.
Example(s): Gen 14

Regional Pandemic
Effect: A microbe kills off a specific line of species within a limited region.
Example(s): Gen 68, Gen 81, Gen 95, Gen 104, Gen 105

Super Blizzard
Effect: Can causes all macro life to die in the region except for those who can survive in a very low temperatures environment.
Example(s): NONE

Super Earthquake
Effect: Can cause cave-ins or even super tsunamis.
Example(s): Gen 115

Super Hurricane
Effect: Moves species across the ocean to new biomes.
Example(s): Gen 36, Gen 110

Super Tsunami
Effect: Can cause floods across coastal biomes.
Example(s): NONE

Super Wildfire
Effect: Kills off much of the flora within a region. Only the fire resistant species will survive.
Example(s): NONE

Volcanic Eruption
Effect: Can lower populations and kill off weaker species within the region. Makes volcanic biome.
Example(s): Gen 90, Gen 119