El Niño/La Niña Update (March 2015)

Since late October 2014, sea surface temperatures in the tropical Pacific Ocean have remained at near-borderline to weak El Niño levels. However, many atmospheric features of El Niño have displayed only weak or short-lived responses to the warming. For example, the pattern of cloudiness and rainfall anomalies has not been well defined. Models and expert opinion suggest a continuation of warm-neutral to weak El Niño conditions through April and May of 2015.