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.
November 21, 2025
high
definition
Describes a meteorological feature that transports large amounts of atmospheric moisture and can drive heavy precipitation.
Atmospheric rivers are long, narrow plumes of tropical moisture originating over the Pacific Ocean that can transport large amounts of water vapor and produce heavy precipitation over coastal and inland regions such as California.
November 17, 2025
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process
Describes the meteorological nature and precipitation impact of atmospheric rivers.
Atmospheric rivers are long plumes of tropical moisture over the Pacific Ocean that can deliver large amounts of rain and produce heavy precipitation events in California.
November 16, 2025
high
definition
Describes the meteorological phenomenon that transports concentrated moisture from the tropics and can cause heavy rainfall when it reaches California.