FORECASTCONTEXT.COM · THE LARGE-SCALE STATE BEHIND THE FORECAST BRIEFINGMOTIONOUTLOOKMETHODSAPI☀ AUTO

FORECAST CONTEXT

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

ERA5 + GFS2.5°DAILY
BriefingTropics & oceansMJO & intraseasonal
OMI_amp

MJO amplitude (OMI)

√(PC1² + PC2²). — Kiladis et al. 2014 (MWR 142, 1697); https://psl.noaa.gov/mjo/mjoindex/