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Southern California had become increasingly arid since late summer 2024, with storm systems predominantly affecting the Pacific Northwest and Northern California instead, as a result of the El Niño–Southern Oscillation (ENSO) shifting from El Niño to La Niña. La Niña conditions had emerged over the tropical Pacific Ocean by December 2024.
NOAA's Climate Prediction Center (CPC) announced Thursday that water temperatures in critical parts of the Pacific Ocean had finally reached the threshold required for La Niña to emerge in December.
La Niña was last in place from 2020 to 2023 — a period of time that included California's driest three years on record. The arid stretch shrank reservoirs to record lows, triggered Southern ...
The weak La Niña is forecast to stick around through April before yielding once again to so-called neutral — not La Niña or El Niño — conditions, according to the Climate Prediction Center.
La Niña is marked by sea-surface water temperatures in a key area of the eastern Pacific. (Image: NOAA/CPC) La Niña typically has the greatest impact on the Northern Hemisphere in the winter ...
The Santa Anas are katabatic winds (Greek for "flowing downhill") arising in higher altitudes and blowing down towards sea level. [7] The National Weather Service defines Santa Ana winds as "a weather condition [in southern California] in which strong, hot, dust-bearing winds descend to the Pacific Coast around Los Angeles from inland desert regions".
The 2020–2023 La Niña event was a rare three-year, triple-dip La Niña. [1] The impact of the event led to numerous natural disasters that were either sparked or fueled by La Niña. La Niña refers to the reduction in the temperature of the ocean surface across the central and eastern equatorial Pacific, accompanied by notable changes in the ...
Mandatory evacuation orders are still in place, but as of Sunday evening, all areas under evacuation orders and warnings placed on a curfew from 6 p.m. to 6 a.m. local time until Monday, according ...