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An explanation from the National Weather Service on atmospheric rivers. An atmospheric river (AR) is a narrow corridor or filament of concentrated moisture in the atmosphere. Other names for this phenomenon are tropical plume, tropical connection, moisture plume, water vapor surge, and cloud band. [1] [2] Composite satellite photos of an ...
Atmospheric rivers are long and relatively narrow bands of water vapor that form over an ocean and flow through the sky, transporting much of the moisture from the tropics to northern latitudes.
Atmospheric rivers can also wreak havoc along the U.S. East Coast. For example, disastrous flooding was sparked in South Carolina when Hurricane Joaquin churned off the coast in October 2015.
Pineapple Express is a specific recurring atmospheric river both in the waters immediately northeast of the Hawaiian Islands and extending northeast to any location along the Pacific coast of North America. It is a non-technical term and a meteorological phenomenon. It is characterized by a strong and persistent large-scale flow of warm moist ...
For example, by the year 2100, scientists say atmospheric rivers along the Pacific Northwest could increase flooding risks by temporarily raising the heights of ocean waters as much as three times ...
In early February 2024, two atmospheric rivers brought extensive flooding, intense winds, and power outages to portions of California.The storms caused record-breaking rainfall totals to be observed in multiple areas, as well as the declaration of states of emergency in multiple counties in Southern California.
Atmospheric Rivers. This headline-making phenomenon has been drenching parts of the West Coast lately — but what, exactly, is an atmospheric river? It occurs when strong winds push tropical ...
An atmospheric river is a wind-borne, deep layer of water vapor with origins in the tropics, extending from the surface to high altitudes, often above 10,000 feet, and concentrated into a relatively narrow band, typically about 400 to 600 kilometres (250 to 370 mi) wide, usually running ahead of a frontal boundary, or merging into it.