Reposted by Etienne Kapikian

As of 16 September 2026, this chart shows the relative Oceanic Niño Index (RONI) calculated daily from NOAA's OISST dataset alongside three other El Niño years (1982, 1997, 2015) for context.
For more information on RONI + recent 3-month values, visit www.cpc.ncep.noaa.gov/products/ana...