The Nino 3.4 Region is illustrated on the ENSO Home Page. HiDyn-Model
forecasts of Nino 3.4 anomalies
are available from August 1980 to the present. Forecasts are based on
data seven months prior to the forecast back to January-1970 data.
For example, the December-1985 forecast uses May-1985 data back to January-1970