‘Rivers in the sky’ are why California is flooding – Good explanation of Atmospheric Rivers

From National Geographic – What is an atmospheric river? “You need two ingredients for an atmospheric river,” says Daniel Swain, a climate scientist at the University of California, Los Angeles. “A plume of really concentrated moisture in the atmosphere and strong, fast winds to move it around.” The concentrated moisture comes from the ocean. Warm oceans evaporate water into the atmosphere, and winds and storms concentrate that water vapor into long, narrow, speedy trains of extra-wet air. Then, big global winds in the lower few miles of the atmosphere accelerate those amped-up, stretched-out, water-rich versions of normal storms. (more)

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Greg Harvey has been selected as the Board’s Plan Implementation and Compliance Branch Chief, effective July 1, 2019. Greg has over 18 years of experience in the engineering field and has been with the Board since 2017. Since that time, Greg has played an active role in the coordination with key agencies for the Central Valley Flood Protection Plan Update, managed multiple flood system improvement projects, and acted as PIC Branch Supervisor for nine months. Congratulations, Greg!