Researchers report a breakthrough in making accurate predictions of weather weeks ahead. A new model allows for detection of atmospheric rivers (ARs)—plumes of intense water vapor transpor that often trigger weather and hydrologic extreme weeks in advance.

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Researchers report a breakthrough in making accurate predictions of weather weeks ahead. A new model allows for detection of atmospheric rivers (ARs)—plumes of intense water vapor transpor that often trigger weather and hydrologic extreme weeks in advance.