For the NOAA to declare an El Niño, a specific part of the Pacific Ocean called Niño 3.4 must be 0.5 C warmer than the seasonal average for three consecutive months, with the expectation that it ...

But the latest data to come from Nino 3.4 is that sea surface temperatures there are 0.4C below average and the threshold for a La Nina to be declared is 0.8C below average for a period of three ...

It's measured in an imaginary box along the equator, roughly south of Hawaii, known as the Nino 3.4 Index. Get the world’s most fascinating discoveries delivered straight to your inbox.

El Niño is creeping into “strong” territory, the National Weather Service’s latest advisory indicated Thursday, and the phenomenon is forecast to remain at least at this strength into the ...

The National Center for Atmospheric Research (NCAR) has recently released its latest guidance for the upcoming El Nino and is now predicting what is called a "Super El Niño".

During El Nino, the temperature of a specific area of the central and eastern Pacific – called Nino 3.4 in meteorological circles – rises. The El Nino has been declared.