Erdbeben
earthquake
Hurrikan
hurricane (A.E. cyclone)
Tsunami
tsuami
Lawine
avalanche (only one a mountain)
Erdrutsch
landslide
Volkan/Vulkanausbruch
volcano/volcanic eruption
Tornado
tornado
Schneesturm
blizzard
Hochwasser
flood
Dürre
drought
Taifun (tropical storm)
typhoon
Waldbrand
wildfire/bushfire (forestfire)
Ölleck
oil spill/oil slick
Klimawandel
climate change
Erderwärmung
global warming
a disease that affects the whole world
pandemic
a disease that affects many people in a specific region
epidemic
Bürgerkrieg
cicival war
schwerer Unfall
major accident
tödlich
fatal
Hungersnot
famine
Vorfall/Zwischenfall
incident
Explosion
explosion
Völkmörder
genocide