India, June 9 -- Government scientists could officially declare an El Nino is underway as early as this Thursday, June 11, when forecasters from the National Oceanic and Atmospheric Administration's Climate Prediction Center are expected to make an announcement. And experts warn this one could be powerful.

"The science is clear: El Nino is arriving on our doorstep in the coming months with 90% certainty," United Nations Secretary-General Antonio Guterres said in a video statement. "The world must treat it as the urgent climate warning it is. El Nino conditions will pour fuel on the fire of a warming world," as per USA Today.

El Nino is a natural climate pattern in which surface sea water temperatures in the central and eastern tropical ...