The warning for the districts of Viana do Castelo, Porto, Lisbon, Leiria, Aveiro, Coimbra and Braga starts at 21:00 today and lasts until 09:00 on Tuesday, with waves from the west/northwest expected to be between 4 and 4.5 metres.

According to information available on the Portuguese Navy website, the maritime ports of Caminha, Esposende, Vila Praia de Âncora, Póvoa de Varzim and Vila do Conde are closed to all navigation.