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
BriefingOfficial indicesOfficial · Tropics & Hadley cells
KIT_QBO15

QBO 15 hPa, radiosonde (FU Berlin/KIT)

Monthly mean zonal wind at 15 hPa: Canton Island 1953–67, Gan 1967–75, Singapore since 1976. — Naujokat 1986 · base none (total wind)