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
BriefingStratosphereVortex geometry
vortex_centroid_lat

Vortex centroid latitude

Centroid of the 10-hPa vortex from 2-D moments. Below 66°N for 7+ days = displaced vortex. — Seviour et al. 2013