This weekend, a second atmospheric river will flow into, and on to, California, with the estimated snowfall in the Sierra up to 20 feet. The storm could also cause dangerous flooding throughout northern and central California. Curious? Click on the first link below for a San Jose Mercury News story explaining what atmospheric rivers are. Click on the second link if you want to dig deeper into the science of these phenomena.

Explaining the atmospheric river that’s bringing our weekend storm

Atmospheric River Q&A

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