Heavy rain triggers evacuation warnings in Japan

Hundreds of thousands of residents in Japan were urged to evacuate on Friday as tropical storm Mawar brought heavy rain, causing several rivers to overflow and leaving two people missing.

Storms lash drought-hit Spain

Spain's weather agency issued weather warnings for large parts of the country Tuesday as several days of torrential rains following a prolonged drought caused minor flooding.

Rainfall is on the rise in northwest Australia

In the first week of 2023, slow-moving Tropical Cyclone Ellie dropped 800mm of rainfall, flooding the Fitzroy River in Australia's northwest. Local residents were cut off from food and other supplies, leading to their evacuation ...

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Rain

Rain is liquid precipitation. On Earth, it is the condensation of atmospheric water vapor into drops heavy enough to fall, often making it to the surface. Rain is the primary source of fresh water for most areas of the world, providing suitable conditions for diverse ecosystems, as well as water for hydroelectric power plants and crop irrigation. However, not all rain reaches the surface; some evaporates while falling through dry air. This is called virga, a phenomenon often seen in hot, dry desert regions. The METAR code for rain is RA.

Rain is also known or suspected on other worlds. On Titan, Saturn's largest moon, infrequent methane rain is thought to carve the moon's numerous surface channels. On Venus, sulfuric acid virga evaporates 25 km from the surface. There is likely to be rain of various compositions in the upper atmospheres of the gas giants, as well as precipitation of liquid neon and helium in the deep atmospheres.

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