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Those long, intense plumes of moisture in the sky known as atmospheric rivers are a vital water source to communities along the U.S. West Coast. In their absence, desiccating droughts can develop. But in their presence, they can cause extreme rain and floods. Currently, no guidance exists to help decision-makers plan for these events more than two weeks in advance, but a new study describes a breakthrough in accurately predicting atmospheric river behavior several weeks ahead. [Source: NOAA Climate Program Office]
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