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
BriefingAngular momentumAngular momentum
GWO1

GWO1 · AAM anomaly

Standardized global relative atmospheric angular momentum anomaly. — Weickmann & Berry 2008