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1934–35 North American drought; 1950s Texas drought; 1983–1985 North American drought; 1988–1990 North American drought; 2002 North American drought; 2006–2008 Southeastern United States drought; 2010–2013 Southern United States and Mexico drought. 2012–2013 North American drought; 2011–2017 California drought; 2012–2013 North ...
The 2018–2021 Southern Africa drought was a period of drought that took place in Southern Africa. The drought began in late October 2018, and negatively affected food security in the region. In mid-August 2019, the drought was classified as a level 2 Red-Class event by the Global Disaster Alert and Coordination System . [ 1 ]
Fields outside Benambra, Australia suffering from drought in 2006.. The IPCC Sixth Assessment Report defines a drought simply as "drier than normal conditions". [1]: 1157 This means that a drought is "a moisture deficit relative to the average water availability at a given location and season".
A flash drought is a type of drought characterized by its rapid onset, intensification, and severity over a relatively short timescale, usually within a few days or weeks. [1] This concept has evolved during the last decade as researchers have become more interested in understanding and mitigating its impacts.
Mechanisms of producing precipitation include convective, stratiform, [6] and orographic rainfall. [7] Convective processes involve strong vertical motions that can cause the overturning of the atmosphere in that location within an hour and cause heavy precipitation, [8] while stratiform processes involve weaker upward motions and less intense precipitation over a longer duration. [9]
Megadroughts have historically led to the mass migration of humans away from drought affected lands, resulting in a significant population decline from pre-drought levels. . They are suspected of playing a primary role in the collapse of several pre-industrial civilizations, including the Ancestral Puebloans of the North American Southwest, [6] the Khmer Empire of Cambodia, [7] the Maya of ...
The drought is largely driven by temperature, which increases the rate of evaporation, with some contribution from the lack of precipitation. The several wet years since 2000 were not sufficient to end the drought. Researchers calculated that without climate change-induced evaporation, the precipitation in 2005 would have broken the drought.
The drought caused $60 billion in damage ($155 billion 2024 USD) in United States dollars, adjusting for inflation. The drought occasioned some of the worst blowing-dust events since 1977 or the 1930s in many locations in the Midwestern United States, including a protracted dust storm, which closed schools in South Dakota in late February 1988 ...