El Nino and La Nina

The most intense El Niño events may soon hit every 10 years, instead of every 20 years, thanks to warming water in the eastern Pacific Ocean, a new study predicts.

Last month was the hottest November on record since 1880, new climate data suggests. And the odds that next year will be even hotter are rising.

A shrinking tropical glacier gives up an 1,800-year climate record.

Forecasters call off predictions for a wet winter.

Warmer-than-average winter predicted for the northwest and colder-than-normal for the southeast.

Monstrous floods are wreaking havoc on the vanishing Pacific island.

As expected, La Niña petered out in April.