El Nino occurs about every two to seven years, and climatologists have been predicting its arrival for several months this year. El Nino is a phenomenon characterized by warmer-than-normal surface temperatures in the equatorial Pacific Ocean.
It "could lead to new temperature records" in some areas, NOAA climatologist Michelle L'Heureux said in a statement.2023-2027 is expected to be the warmest period ever recorded on Earth, according to the World Meteorological Organization.