Floods & Droughts

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The extremes of flood and drought occur within the context of climate, a context that is both local and global. The cadence of wet and dry years is difficult to comprehend, and also predict. In some places around the world there is a pattern that links drought and it’s inverse, flooding. The cycle of water evaporating and falling balances over large areas and time intervals, but at particular places, precipitation can be great enough to produce floods or small enough to generate a drought. Over time, drought has been more deadly than flooding, but flooding is the most universal of natural hazards. Whether widespread or local in scale, floods are set up by large-scale atmospheric processes that are in some ways the inverse of droughts.

Floods - causes, types and effects

Flood is the overflowing of the normal confines of a body of water, usually a stream, or the accumulation of water over areas that are not normally submerged. During the past [...]

Droughts - causes, types and effects

Drought is a period of abnormally dry weather long enough to cause a serious hydrological imbalance. It can be defined as a deficiency of precipitation over an extended period of [...]

Related phenomena: El Niño and La Niña

These ocean-atmospheric systems responsible for noticeable cyclical changes in the temperature of water surface in the Pacific Ocean are the kind of event that can change the location of areas [...]