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Landfalling Atmospheric Rivers Increase in First Quarter of Water Year 2021 Over 2020

A Scripps Center for Western Weather and Water Extremes report shows that more atmospheric rivers have made landfall over the U.S. West Coast in the first four months of Water Year 2021 compared to the previous period in 2020.

San Diego Experiencing One of Driest Februaries in Nearly 170 years

San Diego is experiencing one of the driest Februaries it has had in nearly 170 years due to weather patterns that are sending most winter storms into the Pacific Northwest and Northern California rather than allowing them to drop south, says the National Weather Service.

Rain in the Bay Area, Snow in Tahoe: Here’s When Storms are Forecast to Hit

A series of storms will usher in a wet holiday weekend across Northern California, threatening to put a damper on outdoor activities and cause driving delays for holiday travelers.

Marin Water Suppliers Consider Drought Restrictions

Marin County water districts are weighing the need for mandatory conservation actions in the face of abnormally low rainfall and what could be another prolonged drought.

Marin’s two largest suppliers — the Marin Municipal Water District and the North Marin Water District — plan to begin with voluntary conservation measures before considering more restrictive options such as rationing and irrigation bans similar to those of the 2014 drought.

California’s Snowpack: How Is It Measured? Why Is It Important?

How is California’s snowpack measured? Why is it important? And how is our snowpack stacking up this winter, so far? NBC 7 meteorologist Crystal Egger breaks it all down.

Sierra Snow Grows, but Bay Area has 3rd Biggest Rainfall Deficit Since 1849

California’s water picture is heading in two different directions.

A major storm last week and a more modest system Tuesday continued to boost the Sierra Nevada snowpack, the source of one-third of the state’s water supply, in promising ways. But the Bay Area and most cities across Northern California remain stuck in one of the worst two-year rainfall deficits seen since the 1849 Gold Rush, increasing the risk of water restrictions and dry wildfire conditions locally next summer.

A Surge From an Atmospheric River Drove California’s Latest Climate Extremes

Flooding rains and record snow in California last week marked another extreme swing of the state’s climate pendulum. The widespread downpours triggered mudslides that damaged homes and roads near some of the huge fire scars from last summer, and also brought some of the water the state will need to end a months-long hot and dry streak and douse a record-setting wildfire season that extended into January.

Despite Rainfall, State Still Aiming for 55 Gallon Per Person Water Conservation Target

Fresh off a week filled with rain and snow due to an atmospheric river, water conservation may not be top of mind for everyday Californians.

NBC Bay Area Meteorologist Rob Mayeda just broke down some figures from this latest storm. In a Friday tweet he says, “Sierra Snowpack Surge: Up to 66% of average from just 40% one week ago. Biggest rains for the Central and Southern Sierra.”

While the recent precipitation may make the 2011-2017 California drought seem like a distant memory, a couple of laws passed by the legislature at that time are set to rain down policy on water agencies throughout the state.

Starting in November of 2023, California will enact a statewide indoor water use standard of 55 gallons per person per day. Local water agencies could be fined $10,000 a day by the state if they fail to meet the standard.

February 1: Is California Still Heading for a Multi-Year Drought?

This updates a post from December on the likelihood of California entering a second dry year. Normally, a second dry year brings drought operations for California’s overall water system operations.

Today, it is even likelier that California is entering a multi-year drought.

Precipitation conditions have improved somewhat with a nice atmospheric river this last week, but remain 51% of average for this time of year for the Sacramento Valley. (San Joaquin and Tulare basins are 61% and 47% of historical seasonal average precipitation so far.) Snowpack has improved somewhat with very recent storms, but is about as scarce as the precipitation.

Opinion: Water Markets in California Can Reduce the Costs of Drought

California’s increasingly volatile warming climate is making droughts more intense, and complicating water management. A just-launched commodity futures market for the state’s water provides a new tool for farmers, municipalities and other interested parties to ensure against water price shocks arising from drought-fueled shortages.

Taking a Wall Street approach to an essential natural resource has prompted both fear and hype. Will California experience a new Gold Rush in water? Will speculation boost the cost of water? Perhaps both the fear and the hype are unwarranted.