The upcoming storm is likely to pose a higher risk for mudslides, debris flows and flooding than the rainfall this past week.

The year was 1966. The Palm Springs Aerial Tramway, which carries passengers from Palm Springs up to the San Jacinto Mountains nearly 6,000 feet above, had opened a few years prior to great fanfare.

A long-duration atmospheric river is set to bring moderate to heavy rain in northern and central parts of California, but ...