Severe floods in Texas and Oklahoma are causing devastation after multiple storm systems battered a formerly drought-stricken area, according to experts.
El Niño and La Niña are parts of an oscillation in the ocean-atmosphere system (called the El Niño Southern Oscillation, or ENSO cycle) that can impact weather and climate conditions across the globe. El Niño features warmer-than-average temperatures in the waters of the equatorial Pacific Ocean, while La Niña features colder-than-average waters. Read our stories below on the latest ENSO conditions and research into how the cycle affects global weather patterns.
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.
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.
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.
Arctic storms could bury Buffalo under heaps of snow until Christmas and 2014 will still be the hottest year on Earth since 1880, climate scientists said today.
El Niño conditions continue to sputter in the tropical Pacific Ocean, pushing back the odds of even a weak El Niño emerging this winter, forecasters said today (Nov. 6).
El Niño still hasn't emerged, but forecasters give it a two-thirds chance of forming by the end of the year.
Six centuries of tree-ring data have shown that coastal upwelling along the west coast of North America has become highly variable in the last half century.
The chances of an El Niño forming by winter have dropped to 65 percent, still double the normal odds.
Huge wildfires sparked by a powerful El Niño event 16 years ago left a distinct tinge of sulfur in Antarctica's snow.
The obsessive attention to the state of the latest El Niño comes from the major global impacts it can have.
January-June 2014 was the warmest first half to a year ever in California, helping fuel the state's drought.