El Nino and La Nina

No, El Niño is not the source of every weather crisis, but it can be devastating, and researchers have uncovered a new clue that may help predict how bad things can get.

Severe floods in Texas and Oklahoma are causing devastation after multiple storm systems battered a formerly drought-stricken area, according to experts.

Billions of by-the-wind sailors, also called Velella velella, could wash ashore in coming months because of favorable water temperatures and onshore winds.

The West can expect its warm and dry weather to continue through the summer, while the central Plains will be relatively cool and wet.

The first three months of 2015 set new global heat records.

A warm blob of water squished into a patch in the Pacific Ocean may be to blame for the weird weather the United States has experienced this year.

This year's El Niño may deliver a quiet tornado season.

A weak El Nino has finally emerged a year after its first signs of forming, but weather impacts will be muted.

The weird weather phenomenon known as La Niña could occur nearly twice as often in the future as it does now, due to global warming, researchers say in a new study.