The Southwest monsoon has wrapped up, and it featured a weird split of record dry conditions in parts of Arizona and soaking rain, including from the remnants of a former hurricane in California, Nevada and other states.
Thanks to a decades-long supply diversification strategy and continued efficient use of water across the region, the San Diego County Water Authority announced today that the region has reliable supplies to meet demands in Water Year 2024, which started Oct. 1.
Hydrologists use Oct. 1 to begin measuring the snow and rain that will help carry water users through dry summer months the following calendar year. This fall, El Niño conditions continue to strengthen and could bring above-average precipitation to Southern California.
San Diego’s water year ends Saturday — and it will be recorded as the 14th wettest year on record for the city.
A recorded 15.72 inches of rain fell at the San Diego Airport over the past 12 months. The weather station there typically sees about 9.5 inches a year.
It was the wettest year ever on Palomar Mountain. Rainfall there totaled 69.24 inches.
Less than two months since Mammoth Mountain’s historic ski season concluded, the first snowfall of the new season is set to arrive in the Sierra Nevada.
Weather models predict a low-pressure system with Canadian roots will bring cool temperatures and rain showers to the California coast and Central Valley on Saturday. In the Sierra Nevada, the air is expected to be cold enough for the first snowfall of the season at Kirkwood Mountain, Mammoth Mountain and other high-elevation ski resorts.
As dark clouds massed over Kings County on the chilly morning of March 18, scores of panicked farmers and landowners packed the Board of Supervisors chambers in Hanford for a third day of emergency hearings. They were there to hurl accusations and blame and to plead with county leaders to do something to divert the floodwaters that were submerging their fields and homes, sapping their livelihoods and now threatening to wipe out the city of Corcoran and farm towns across the region.
Drought is a regular event in California. In recent decades, California has experienced five prolonged drought periods (1976-77, 1987-1992, 2007-09, 2011-16, 2020-22). Urban water agencies have responded with investments in supply and demand management measures, which have made California’s cities more resilient to drought effects. What motivated these investments?
On the heels of a record-setting wet and warm August, forecasters on Thursday announced that El Niño is gaining strength and will almost certainly persist into 2024.
El Niño, the warm phase of the El Niño-La Niña Southern Oscillation pattern, is a major driver of weather worldwide and is often associated with hotter global temperatures and wetter conditions in California.
A moisture-rich atmospheric river that’s being called the first storm of the season is forecast to deliver rain to Northern California as early as Sunday night with the chance for showers continuing into Monday and Tuesday. Eureka and areas to the north are expected to see the heaviest rainfall with totals of 1 to 3 inches, while the Bay Area is likely to receive only light showers, according to the National Weather Service.
It’s been 20 years since the largest water agencies in Southern California agreed on a historic deal: San Diego would buy water from Imperial Valley farmers. More importantly, though, the deal outlined exactly how much water these agencies could claim from the Colorado River and reduced the amount of water California took from the river.
We are living in the Anthropocene, an era being defined by global mass extinctions caused by humanity. While on-going and impending extinctions of birds and other terrestrial vertebrates gain the most attention, the situation with freshwater fishes (and other freshwater organisms) is as bad or worse, partly because many freshwater extinctions are nearly invisible events, hidden by murky waters (Moyle and Leidy 2023).
