El Niño–Southern Oscillation
Not all El Niños happen in the Eastern Pacific. During recent decades, Central Pacific El Niños have been discovered. When these happen, the effects from CP El Niños are very different from traditional El Niños. Central Pacific El Niños took place in 1986–88, 1991–92, 1994–95, 2002–03, 2004–05, 2006–07, 2009–10 and 2015–16.