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 & oceansEquatorial waves
MRG_AM

mixed Rossby–gravity OLR · AM

Wheeler–Kiladis mixed Rossby–gravity-filtered OLR anomaly, Americas/Atlantic 80–30°W (2.5–15°N; k −10…−1, 3–10 d, h 8–90 m, antisymmetric). Negative = enhanced convection. Recent days are provisional (filter edge). — Wheeler & Kiladis 1999 (JAS 56, 374); https://psl.noaa.gov/map/clim/olr_modes/