A natural disaster is any event or force of nature that has catastrophic consequences.
Here is a list of natural disasters to give you a few ideas, but you need not stick to this list.
-Avalanche
-Blizzard
-Cyclone
-Drought
-Earth Quake
-Forest Fire
-Floods
-Hurricane
-Hail Storm
-Ice Storm
-Landslide
-Limnic Eruptions
-Lightning
-Meteoroid Impact
-Mudslide
-Solar Flare
-Tsunami
-Tornado
-Typhoon
-Tropical Storm
-Thunderstorms
-Volcanic Eruptions
-Winter Storms
-Wild Fires
Here are what kids from all over the world created for this challenge.