(Reuters) - There is about 50-55% chance of La Niña development during the northern hemisphere fall in 2020, with a 50% chance the pattern will continue through winter 2020-21, a U.S. government weather forecaster said on Thursday.
La Niña pattern is characterized by unusually cold temperatures in the equatorial Pacific Ocean.
Meanwhile, El Niño-Southern Oscillation (ENSO) neutral conditions are expected to prevail summer in 2020, the National Weather Service's Climate Prediction Center (CPC) said in its monthly forecast.