Neutral, or La Nada, conditions persist in the equatorial Pacific Ocean, frustrating climate forecasters.
Published Sep 12, 2013
Conditions in May 2014 look similar to those in May 1997, a year that brought one of the most potent El Niño events of the 20th century.
Published May 14, 2014
With each passing month, 2015 looks more and more like 1997.
Published Oct 13, 2015
After appearing for two consecutive winters, La Niña appears to be taking some time off.
Published May 4, 2012
