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A weak La Niña is expected this winter, federal experts say. Drier-than-average conditions are likely in the Southwest, but California's outlook is uncertain.
NOAA has declared a much-anticipated La Niña climate pattern to be underway, but the event is a bit unusual, as regions of the world have been experiencing La Niña-like conditions for months.
A La Niña in 2010 is evident by the large pool of cooler-than-normal (blue and purple) water stretching from the eastern to the central Pacific Ocean.
For context, La Niña usually brings wetter-than-average winter conditions to the Pacific Northwest and Ohio Valley, while the nation's southern tier tends to skew drier. la_nina_pattern_precip.png
Just recently Earth experienced a “triple-dip” La Nina event from 2020 to 2023. “We had three back to back winters where we had La Nina conditions, which was unusual because the only other case of that happening was back in 1973 to 1976,” said Michelle L’Heureux, a climate scientist at NOAA.
The forecast also points to continued dryness regardless of La Niña's timing. Below-normal precipitation is likely through November for the Southwest and Southern California, as well as portions ...
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 ...
Southern California is expected to be drier and warmer than average – typical for La Niña. It’s crucial the region gets a period of soaking rain in the next few months; wet weather is needed ...