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
La Niña, the large area of cold water in the Pacific Ocean widely blamed for last summer's drought and often related to an increase in the number of hurricanes that make landfall, appears to be on its last legs.
Published May 10, 2000
These images show that the central and eastern Pacific Ocean was unusually cold in December 2010, a tell-tale sign of La Niña. The associated rainfall map shows that La Niña was impacting weather in parts of the globe.
Published Dec 24, 2010
