Overview
- Meteocat reported Friday that an atmospheric river from the Caribbean helped carry storm 'Charles' to the Iberian Atlantic coast and delivered rain and rough seas to parts of Catalonia this week.
- Ocean data show an exceptionally strong 2026–27 El Niño with sea‑surface temperature anomalies above about 3°C and models project peak warming through December–January before a decline next spring.
- Scientists say the main teleconnection signals are a strengthened or shifted subtropical jet that boosts moisture transport and signs of polar‑vortex deformation that could alter Atlantic circulation.
- Agencies and seasonal models now assign higher odds of a wetter Nov–Dec–Jan for parts of the Peninsula but stress large regional uncertainty and a low (~20%) chance of notable Arctic air intrusions into Catalonia.
- Locally, extra rainfall could ease early surface drought in western Catalonia while raising short‑term flood and coastal‑storm risks, so authorities will combine seasonal guidance with short‑term weather alerts through spring 2027.