There are gathered events of fairly modern times so that there is enough evidence to state about their disastrousness. None of these are caused by human actions, rather by forces of nature. However, human caused climate changes in modern times make destructive weather events to worsen.
10. Tōhoku Earthquake and Tsunami, 2011
Although Japan has the most sophisticated tsunami and earthquake protection systems, it caused huge structural damage and many deaths due to the underestimation of the earthquake following tsunami wave. Additionally, tsunami caused nuclear accidents at 3 reactors in the Fukushima Power Plant complex. This Great East Japan earthquake was the most powerful that ever hit Japan and the biggest crisis since the World War II. The World Bank’s estimated economic cost claims it the costliest natural disaster of all time.
9. Tornado Season of US, 2011
The year 2011 in US hit the records of tornadoes across the country. April of that year was both the most productive for tornadoes and the deadliest plus costliest month for people. Total number of tornadoes that year was 1,691 tornadoes and in April alone 364 people were killed by tornadoes. By experts of National Geographic it is ranked as one of the worst natural disasters in history.
8. Spanish Influenza Pandemic, 1918
The pandemic was created by an influenza virus, which easy spreads across the globe about 3 times in each century. During the World War II the reports were minimized to maintain control over those involved. The only country which reported the effects of the deadly pandemic was the neutral Spain making a false impression that it was hit the hardest. The modern transportation, movements of troops during the war as well as the weakened immune systems of soldiers increased the speed of the influenza flu. It killed 3 to 5% of the world’s population at that time and thIs is what makes it one of the top ten natural disasters.
7. The Eruption of Krakatoa, 1883
The volcano became active around 16th of June – then the first eruptions began, but the seismic activity around the area of volcano was noticeable already some years before. By August 25 the eruptions intensified and by August 28 diminished. The eruptions, tsunamis and volcanic ash created by Krakatoa, destroyed the most of the island together with its archipelago. The disaster took at least 36,417 deaths making Krakatoa one of the most destructive and deadliest volcanos in the world.
6. Hurricane Katrina, 2005
The storm of category 5 originated in Bahamas and made its landfall as a hurricane of category 3 in Southeast Louisiana on August 29. The storm affected Bahamas, South Florida, Cuba, Louisiana (especially Greater New Orleans), Mississippi, Alabama, Florida Panhandle, and most of eastern North America. The most significant number of deaths occurred in New Orleans, Louisiana due to the levee system which catastrophically failed. It was the costliest and most destructive hurricane in the history of US.