Is this the strongest El Niño ever?
Each line is one El Niño, from May through the next April. The thick line is this year.
The latest reading is +1.36. The highest peak on record is +2.40 (1982–83).
Three-month official Pacific warmth index (NOAA CPC RONI), the same series as the homepage chart. · NOAA CPC data file
The homepage strength chart uses the stored NOAA CPC probability table. This page does not restate a separate percent or a date from the advisory. NOAA CPC advisory
The World Meteorological Organization publishes its own El Niño statement. This page links that note and does not copy a date or a statistic from it. WMO statement
A strong El Niño does not automatically mean strong local impacts.
