Natural disasters are devastating events caused by natural hazards. These hazards encompass a wide array of phenomena, including avalanches, droughts, earthquakes, floods, heat waves, landslides, tropical cyclones, and volcanic activity. Additional hazards range from blizzards and dust storms to ice storms, sinkholes, thunderstorms, tornadoes, and tsunamis. These events can cause significant damage to communities and societies.
The 1906 San Francisco earthquake disaster was caused by an earthquake natural hazard. The disaster significantly harmed the community.
In 1951, the Refugee Convention was established as a cornerstone document for refugee protection and population displacement.
In 1953, the Tangiwai disaster was caused by a lahar, a volcanic mudflow or landslide.
In 1958, a tsunami was caused by a landslide at Lituya Bay, Alaska.
In 1967, a protocol was added to the Refugee Convention, further solidifying the protection of refugees and displaced populations.
The deadliest hurricane ever was the 1970 Bhola cyclone.
In 1976, the term "natural disaster" was already being challenged, marking a shift in understanding towards recognizing the role of human factors in disasters.
In 1976, the term 'natural disaster' was already being questioned as a misnomer, with emphasis on the fact that disasters result from natural hazards impacting vulnerable communities, but are often exacerbated or caused by human actions and inactions, such as poor planning and failure to prepare.
Between 1980 and 2011 geophysical events accounted for 14% of all natural catastrophes.
In 1985, the Armero tragedy occurred in which the town of Armero was buried by a lahar and an estimated 23,000 people were killed.
In 1993, the Superstorm originated in the Gulf of Mexico and traveled north, causing damage in 26 American states as well as in Canada and leading to more than 300 deaths.
The 1997–2009 Millennium Drought in Australia led to a water supply crisis across much of the country. As a result, many desalination plants were built for the first time.
In 1998, the UN Guiding Principles on Internal Displacement were established to protect individuals displaced due to natural disasters.
In the 2004 Indian Ocean tsunami, more women died than men, partly due to the fact that fewer women knew how to swim. During and after a natural disaster, women are at increased risk of being affected by gender based violence and are increasingly vulnerable to sexual violence.
In 2005, Hurricane Katrina devastated the Gulf Coast of the United States. Hurricanes may become more intense and produce more heavy rainfall as a consequence of human-induced climate change.
In 2008, the Afghanistan blizzard was one of the deadliest blizzards in history.
In 2009, a summer heat wave in Victoria, Australia, created conditions which fueled the massive bushfires (collectively known as "Black Saturday bushfires"). Melbourne experienced three days in a row of temperatures exceeding 40 °C (104 °F), with some regional areas sweltering through much higher temperatures.
In 2009, the Kampala Convention was established to protect people displaced due to natural disasters.
The 1997–2009 Millennium Drought in Australia led to a water supply crisis across much of the country. As a result, many desalination plants were built for the first time.
Following the 2010 earthquake in Haiti, the generation of waste from relief operations was called a "second disaster". Millions of water bottles and styrofoam food packages were distributed, and plastic tarpaulins and tents were required for emergency shelters. This increase in plastic waste, combined with poor disposal practices, resulted in open drainage channels being blocked, increasing the risk of disease.
On March 11, 2011, a tsunami occurred near Fukushima, Japan and spread through the Pacific Ocean.
Between 1980 and 2011 geophysical events accounted for 14% of all natural catastrophes.
In 2011, the State of Texas lived under a drought emergency declaration for the entire calendar year and suffered severe economic losses. The drought caused the Bastrop fires.
In 2011, the tsunami in Japan produced huge amounts of debris, estimated at 5 million tonnes of waste reported by the Japanese Ministry of the Environment. Some of this waste, mostly plastic and styrofoam washed up on the coasts of Canada and the United States in late 2011.
In 2012, there were 905 natural disasters worldwide, 93% of which were weather-related disasters. Overall costs were US$170 billion and insured losses $70 billion. 45% were meteorological (storms), 36% were hydrological (floods), 12% were climatological (heat waves, cold waves, droughts, wildfires) and 7% were geophysical events (earthquakes and volcanic eruptions).
Between 2015 and 2021, direct losses from disasters have averaged above US$330 billion annually. This rise is attributed to socio-economic factors like population growth, increased wealth, and human-induced climate change.
In August 2018, the Hindutva party Hindu Makkal Katchi and others blamed women's struggle for the right to enter the Sabarimala temple for the Kerala floods, claiming the angry god Ayyappan caused the floods.
In 2018, a typhoon in Hong Kong led to a 100% increase in the amount of microplastics on beaches surveyed, as reported in a study by Lo et al. in 2020.
As of 2019, Bahamas, Haiti, Zimbabwe and Armenia have the highest share of disability-adjusted life years (DALY) lost due to natural disasters. In addition, in 2019, the Asia-Pacific region is the world's most disaster prone region.
In 2020, a study by Lo et al. reported a 100% increase in the amount of microplastics on beaches surveyed following a typhoon in Hong Kong in 2018.
Between 2015 and 2021, direct losses from disasters have averaged above US$330 billion annually. This rise is attributed to socio-economic factors like population growth, increased wealth, and human-induced climate change.
As of 2022, the Sendai Framework for Disaster Risk Reduction has helped 123 countries adopt both federal and local DRR strategies.
In January 2025, heat waves coupled with severe winds caused megafires that destroyed several sectors of Los Angeles.
By 2030, it is estimated that climate adaptation will cost developing countries between US$215 billion to $387 billion per year. DRR and climate adaptation share similar goals and strategies.
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