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Story summary
- Catalonia experienced deadly flooding after unusually warm Mediterranean waters triggered torrential rain on Oct 3, 2026.
- Sea surface temperatures were about +3 °C above the early-October average, reaching +4 °C locally.
- The floods killed two people and left a third missing.
- Catalan leader Salvador Illa issued a red alert, urging residents to stay indoors from 8 pm Saturday to 2 pm Sunday.
