California storm prompts evacuation orders as state braces for flooding

    California Gov. Gavin Newsom declared a state of emergency Wednesday as a mighty storm expected to bring heavy rain, snow and flooding began its potentially dangerous onslaught.

    Mandatory evacuation orders were in effect for several cities in Northern California, including Richmond in the Bay Area and Watsonville in Santa Cruz County.

    Several communities experiencing some of the biggest downpours were still cleaning up from flooding caused by a storm over the weekend.

    In Sacramento, a second body was found Wednesday near where another body had previously been discovered inside a submerged vehicle.

    Law enforcement officers recovered the second body while towing cars stranded during a New Year’s Eve delugeaccording to Mark Leavitt, public information officer with the California Highway Patrol’s South Sacramento division.

    Both deaths appeared to be weather-related, he said.

    North of San Francisco, in Mill Valley, heavy flooding was reported on a busy freeway underpass, and the city of San Jose in Silicon Valley declared a state of emergency before Newsom’s announcement.

    “We anticipate this may be one of the most challenging storms in California,” said Nancy Ward, director of the Governor’s Office of Emergency Services.

    Newsom’s declaration will allow state agencies to respond quickly as the storm develops and support local jurisdictions.

    While the precipitation appears out-of-character for the drought-stricken state, California would normally expect to see this type of rainfall during an average winter, experts said.

    “These are not huge storms, I think yet, by California standards historically, but they’re big storms during this drought period we’ve had the last few years,” said Jay Lund, vice director of watershed sciences at the University of California Davis.

    The storm systems could test infrastructure that hasn’t seen heavy flows in years.

    “With flood infrastructure, you don’t know if you have a problem until it’s too late, there’s just so many ways levees can go wrong, and we have thousands of miles of levees downstream of reservoirs,” Lund said. “They haven’t been tested in several years.”

    Operators of some of California’s smaller reservoirs, such as Folsom Lake, were already full and had to release water despite the drought. But larger reservoirs still had lots of capacity. Lake Shasta was 34% full and Lake Oroville was 39% full on Wednesday, according to the California Department of Water Resources website,

    “They’re still pretty low, and I would be impressed if these storms fill those two pretty large reservoirs that are still down quite a bit after a few years of drought,” Lund said.

    This year, the state’s snowpack is off to one of its best starts in 40 years, at 174% of the historical average, the third-best measurement in the past four decades, state officials said. Even more snow is expected later this week and over the weekend.

    Water officials remain cautiously optimistic about the effects the current precipitation will have on the lingering drought.

    “The significant Sierra snowpack is good news but unfortunately these same storms are bringing flooding to parts of California,” Karla Nemeth, director of the state Department of Water Resources said in a statement, “This is a prime example of the threat of extreme flooding during a prolonged drought as California experiences more swings between wet and dry periods brought on by our changing climate.”

    In December 2021, California’s snowpack was nearly 100% of its normal range for that time of year after powerful storms blanketed the Sierra Nevada Mountains. Hopes for drought relief quickly faded after heavy snow and rain were followed by three months of extremely dry conditions.

    Much of California’s water comes from melting snow in the Sierra Nevada mountains through the winter months, but it remains to be seen whether the state’s recent pattern will be enough to offset the ongoing drought.

    “We don’t know if it’s going to be a wet year or a dry year until the end of March. There’s very little correlation from one month to the next,” Lund said. April 1 is a typical high point for snowpack in California, where snow melt feeds reservoirs in May and June. But that dynamic is changing.

    “With the warmer climate we’ve had the last decade or so, we’re seeing generally less snowpack than we’re used to and we’re seeing it melt off faster and we’re seeing more evaporation off the watersheds,” Lund said.

    Most of the state remains in severe to extreme drought, according to the US Drought Monitor,

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