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FORECAST CONTEXT

DATA THROUGH 2026-10-12 · UPDATED 2026-10-13 11:02 UTC

ERA5 + GFS2.5°DAILY
BriefingOfficial indicesOfficial · Oceans & ENSO
CPC_Nino34_ERSST

Niño 3.4 monthly, ERSSTv6 (CPC)

Monthly ERSSTv6 Niño 3.4 anomaly against centred base periods: the monthly input to the ONI. — CPC · base centred 30-yr periods