At issue are the bars of Aveiro, Caminha, Esposende, Vila Praia de anchor, Povoa do Varzim, Vila do Conde and Ericeira.
According to AMN, five beach bars (Viana do Castelo, Douro, Figueira da Foz, S. Martinho do Porto and Lagos) and two in the island of Flores, western group of the Azores, (Santa Cruz das Flores and Lage das Flores) are on 14 November conditioned.
Because of the heavy sea turmoil, the Portuguese Institute of Sea and Atmosphere (IPMA) has placed six districts on the continent under red warning, the most serious, from 12pm Thursday until Friday dawn.
According to the IPMA, the districts of Porto, Viana do Castelo, Leiria, Aveiro, Coimbra and Braga will be under red warning, with northwest waves of between seven and eight metres and reaching a maximum height of 15 metres.
These districts are from 6am Thursday under orange warning due to forecast northwest waves of five to seven metres and may reach a maximum height of 14 metres.
The district of Lisbon is also under orange warning from 6am until 12pm due to the sea turbulence, with northwest waves of five to seven metres, reaching a maximum height of 14 metres.
The districts of Faro, Setúbal and Beja are also under orange warning, with waves between five and six metres expected, reaching a maximum height of 12 metres.
According to the IPMA, the red warning is the highest of weather warnings and represents an extremely risky weather situation.
The orange warning, the third on a scale of four, applies to moderate to high risk weather situations, while the yellow warning translates to risk situations for certain weather dependent activities.