What Is El Niño? And why it could cause chaos this year

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• 01:09

  You're probably no stranger to stories of extreme weather events:

• 01:12

  floods, wildfires, destruction.

• 01:15

  And I don't want to alarm you,

• 01:16

  but this year we are going to have a massive weather event called El Niño,

• 01:20

  which is when parts of the Pacific Ocean warm up

• 01:23

  and that has knock-on effects for the rest of the planet.

• 01:26

  And this year is going to be one of the biggest ones on record.

• 01:29

  So today we're going to break down exactly what El Niño is,

• 01:32

  as well as its sister weather phenomenon La Niña,

• 01:35

  and you're going to hear how countries around the world are trying to prepare for it.

• 01:38

  I'm Hannah, and this is What in the World from the BBC World Service.

• 01:46

  First, let's hear how El Niño is affecting you.

• 01:48

  Here's Drishti in Nagpur in India.

• 01:51

  Temperatures over here are already crossing 46 to 47 degrees Celsius.

• 01:55

  Now what's worrying over here is that earlier people at least got some kind of relief during the nights,

• 01:59

  but now even the nights remain extremely hot.

• 02:01

  The temperatures are still touching 45 degrees during the night time.

• 02:04

  When we talk about El Niño, it can intensify heat waves,

• 02:07

  delay rainfall, and make dry heat conditions even worse.

• 02:10

  This is no longer feeling like extreme weather,

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