Relative Niño 3.4 — Forecast Context

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FORECASTCONTEXT.COM · THE LARGE-SCALE STATE BEHIND THE FORECAST BRIEFING MOTION OUTLOOK METHODS API ☀ AUTO

FORECAST CONTEXT

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

ERA5 + GFS2.5°DAILY

BriefingTropics & oceansOceans & ENSO

RelNino34

Relative Niño 3.4

Niño 3.4 minus the 20°S–20°N mean SST anomaly (removes tropical-mean warming).