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US CPC predicts La Nina transition in early 2026 with 75% probability

The U.S. Climate Prediction Center (CPC), which is based in the United States, said that La Nina persists, and there's a 75% probability of a shift to ENSO neutral conditions between January-March.

"Atmospheric anomalies remained consistent with La Nina across the tropical Pacific Ocean." The U.S. forecaster said that for most of the month easterly winds anomalies remained over the central equatorial Pacific and upper-level westerly winds continued across the equatorial Pacific.

Why it's important

La Nina is a part of El Nino and the Southern Oscillation, which affects the water temperatures in central and eastern Pacific Ocean.

La Nina causes cooler water temperatures which can increase the risk of flooding and droughts, which could impact crops. When ENSO neutral, water temperature stays around average, leading to more consistent weather and possibly better crop yields.

KEY QUOTES

The current La Nina has weakened and ENSO is expected to return neutral in either February or March. El Nino conditions could develop later in the summer in the Northern Hemisphere, according to AccuWeather's lead international forecaster, Jason Nicholls.

Donald Keeney is an agricultural meteorologist at Vaisala Weather. He said that "the return to neutral will most likely result in wetter conditions for winter wheat in Argentina." Keeney said that it would also lead to wetter conditions on the southern and central Plains of the U.S. in the later summer. This would improve the outlook for the late growth in hard red winter wheat, corn, and soybeans. Matthew Biggin is a senior analyst with BMI, an Fitch Solutions company. "While there are isolated individual market challenges, our expectation of a weak La Nina will limit the impacts,"? he said.

CONTEXT Indonesian climate official Ardhasena. Sopaheluwakan stated that a La Nina weather pattern which is known to bring more rain, would be weaker by 2026. It should end at the end of first quarter. Two major grain exchanges in Argentina said that heavy rainfall is forecast for Argentina's agricultural belt, which will increase moisture levels over the next few days. This will benefit soy and corn at critical stages of development.

The Australian Bureau of Meteorology reported on Tuesday that atmospheric indicators such as trade winds, pressure, and cloud patterns in the central equatorial Pacific have consistently shown La Nina, albeit in a relatively weak form, since mid-to late September.

The Bureau forecasts that temperatures in the tropical Pacific Ocean will likely remain at La Nina level until late summer, before returning to neutral. Reporting by Pablo Sinha from Bengaluru

(source: Reuters)