La Nina 2024-25 Calendar. The rapid subsurface temperature changes have prompted the climate prediction center to issue an official la niña watch, which is the cold phase of the. This phenomenon, which typically begins between april.

La niña triggers changes in global atmospheric and oceanic circulation that are responsible for anomalous precipitation patterns that can last from months to multiple. The wmo el niño/la niña update is prepared approximately every three months through a collaborative effort between wmo and the international research institute for climate and society (iri) as a contribution to the.