Is It La Nina In 2024. La niña occurs when sea surface temperatures around the equator in the eastern pacific ocean run at least 0.5°c colder than normal for several consecutive months. Once it arrives, it’ll stick around all winter and likely persist into at.
Forecasters at noaa expect la niña to form as early as september. Most of the stronger el nino events (since 1950) have tendencies to reverse to la nina later the following year (fig.