Skip to main content

The Relative Oceanic Nino Index for June–August was -0.44, so quite a bit cooler than the Oceanic Nino Index. As we go into the Northern Hemisphere cool season, it will be interesting to see if these numbers remain separated. The RONI, which takes the entire tropical oceans into account, may be a useful metric to understand ENSO in a warming world. It is not the official NOAA metric for ENSO and is still in the testing stage.

In reply to by Bob G