![Schematic of the decision steps for declaring El Niño](/sites/default/files/DiagnosticFlowchart_610.png)
Image caption
Summary of NOAA decision process in determining El Niño conditions. NOAA Climate.gov drawing by Glen Becker and Fiona Martin.
Summary of NOAA decision process in determining El Niño conditions. NOAA Climate.gov drawing by Glen Becker and Fiona Martin.