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When a rainstorm slammed California’s Russian River watershed in December 2012, water rushed into Lake Mendocino, a reservoir north of San Francisco. The cause? An atmospheric river, a ribbon of moisture-laden air that can ferry water thousands of miles across the sky. When the tempest hit, the state was on the brink of an exceptional drought. But instead of storing the surge the storm brought for the dry days to come, the reservoir’s owner, the US Army Corps of Engineers, let it run downstream.

Despite the fierce rains and deadly mudslides that have struck California, water officials are concerned about the possibility of a renewed drought. But they caution that is too early to tell. Frank Gehrke, chief of the California Cooperative Snow Surveys Program, measured snowpack levels with a team last week in the bare Phillips Station area of the Sierra Nevadas, about 90 miles east of Sacramento. He didn’t find much

The recent fires and rains in Southern California have led to mudslides, debris flows and rock falls along the Santa Barbara County coast. At least 17 people have died, dozens of homes have been destroyed and, in the coastal village of Montecito, the water system was severely damaged. With extreme weather becoming the norm in California, Take Two reached out to Stanford University earth science professor, Noah Diffenbaugh, to learn more about the state’s infrastructure and its level of preparedness for natural disasters.

With word of new snow on the mountains, Laura Kless woke up at dawn Wednesday, Jan. 10, dusted off her snowboarding gear and hit the winding road up to Big Bear from Huntington Beach — she wanted to be one of the first to get a taste of the slopes. Kless, a skier in high school who used to ditch class after fresh storms and picked up snowboarding over the past 20 years, knows the best day to hit the mountain is right after a snowfall.

Drenching storms Monday and Tuesday smashed Northern California’s unusually dry December weather pattern, dumping nearly half a foot of rain on the Santa Cruz Mountains and the Marin hills in 48 hours — with twice that much in Big Sur — and bringing many Bay Area cities their wettest day in at least a year.