Folsom Lake is letting the water flow while rains pick up across the valley. December has provided higher-than-average precipitation for the capital region giving way to cautious optimism about just how much longer the state will be in a drought. But the rainfall also prompted questions about why, in a drought, dams and reservoirs are letting water out instead of holding it in.
All good stories start with a question. So here are five questions for journalists to consider as the record-breaking accumulation of greenhouse gases continues into the opening days of 2023. Climate change, of course, can’t be divided into parts. The answers to these questions, however you devise them, may start small and specific and then, like climate change itself, to borrow the title of a popular 2022 film, illustrate how it is “everything everywhere all at once.”
After the driest start to any year on record, California will end 2022 with snow-capped mountains, soaked roadways and — in some places — flood warnings. The soggy end to an otherwise bone-dry year came as something of a surprise. Only weeks earlier, officials sounded the alarm about a rare third appearance of La Niña — a climate pattern in the tropical Pacific that is often associated with dry conditions in the state.
Reporters who slog through a meadow near Lake Tahoe next week for California’s first manual snow survey of the season will find copious amounts of snow. The state Department of Water Resources’ electronic readings on Dec. 29 showed a statewide snowpack at 156% of normal as a persistent parade of storm clouds has pelted the West Coast in December.
Some western residents are breathing a sigh of relief after recent atmospheric river storms have drenched the drought-parched region, and more are on the way. However, scientists caution that it is too early to celebrate. “At this point in time, we still have another four or five months in our snow season and in our typical rainy season,” said Andrew Schwartz, lead scientist at the Central Sierra Snow Lab.
The grass beneath the palm trees at the Foothills has no function other than to look lush and inviting for people driving up to the gated community’s entrance. The homeowners’ association there, like many that govern such developments dating to the 1980s and 1990s, was still sprinkling Colorado River water on about 50,000 square feet of turf this year.
Eight of the top 10 warmest years on record occurred in the last decade. The snowline where rain turns to powder continues to move uphill. The dry season is longer than ever as wildfires ravage forests and communities. It’s a bleak outlook for the state of the Sierra Nevada snowpack, not to mention our planet as a whole.
Deep uncertainty looms over the Colorado River and the 40 million people who depend on it for their water supply as the basin enters a critical year that could determine its future stability. Plagued by decades of overuse and human-caused climate change, demand for the river’s water has vastly outpaced its supply.
NPR’s Ari Shapiro talks with Andrew Schwartz of the UC Berkeley Central Sierra Snow Lab about how record snowfall in western states could mean a less drought-ridden 2023.
The atmospheric river currently impacting the West Coast, while creating dangerous weather conditions for millions of people, could possibly have a chance of temporarily reversing drought conditions in states that desperately need water, experts say. The National Oceanic and Atmospheric Administration describes atmospheric rivers as “rivers in the sky” because they’re somewhat long and narrow regions in the atmosphere that send most of the water vapor outside the tropics.
