el nino 
NOAA
 
If you've been paying attention to the weather news at all lately, you'll know that it's a big year for a weather event called El Niño.

The complex phenomenon could bring warmer, wetter weather to the Northeast this winter and much-needed rain to California, but worsen cold and drought conditions elsewhere in the US.
And this year's El Niño could be one of the most powerful on record, experts say.

"One of the strongest El Niño events in the past 65 years is likely to bring significant winter weather to the United States," James Aman, senior meteorologist at Earth Networks, said in a statement.

What the heck is El Niño, anyway?

 

El Niño is a weather event characterized by warmer-than-normal temperatures in the equatorial Pacific Ocean, with important consequences for global weather and climate, according to the National Oceanic and Atmospheric Administration. By contrast, La Niña refers to colder-than-normal Pacific temperatures.

The effects of El Niño can be seen across the globe, from increased rainfall in the Southern US and Peru to drought in the Western Pacific and brush fires in Australia.