Barcelona has been placed under a red alert for “extreme danger” due to torrential rainfall, prompting authorities to suspend commuter rail services across Catalonia. The Spanish Transport Minister, Óscar Puente, announced the suspension affecting the region’s eight million residents. Mobile phones in Barcelona blared with warnings of “extreme and continued rainfall”, urging people to avoid dry gorges and canals. The severe weather has disrupted air traffic, with 15 flights rerouted at Barcelona’s airport. Several highways have been closed due to flooding, whilst classes in Tarragona, south of…