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FORECAST CONTEXT

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

ERA5 + GFS2.5°DAILY
BriefingWeather regimesWeather regimes
WR_PNAF_label

Active regime · PNAF

Pacific–North American EOF-phase regimes, life cycle: largest I_wr ≥ 1.0 for ≥ 6 days. 0 = no regime, 1 = WP+, 2 = WP−, 3 = PNA+, 4 = PNA−. — Fan, Chen & Cohen 2024 (JGR Atmospheres 129, e2023JD039868)