The weather phenomenon known as La Niña has ended its three-year tenure. The Climate Prediction Center made the announcement, noting "neutral conditions are expected to continue through the Northern Hemisphere spring and early summer 2023."
La Niña is "associated with cooler-than-normal waters in the tropical Pacific Ocean," per The Washington Post. It is responsible for much of the extreme weather the U.S. has experienced recently, as well as the warmer-than-usual winter weather. The phenomenon contributed to the flurry of tornados across the Midwest and South, ultimately causing $1.9 billion in damage over its three-year reign. The cooler Pacific waters pushed warmer water to the Atlantic, exacerbating east coast hurricanes, including Hurricanes Ian and Ida, The Associated Press reports. La Niña also contributed to the unusual snow in the west.
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With La Niña out, El Niño could now be making its way in, possibly leading to a stronger Pacific hurricane season and warmer temperatures, CNN writes. The Climate Prediction Center predicts El Niño will form "during summer 2023 and [persist] through the fall." El Niño occurs approximately every 15 years.
"The El Niño and La Niña phenomenon occurs (sic) naturally," explains the WMO. "But it is taking place against a background of human-induced climate change, which is increasing global temperatures, affecting seasonal rainfall patterns, and making our weather more extreme."
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