According to the Portuguese Institute for the Sea and the
Atmosphere (IPMA), the yellow warning for these four districts will be in
effect between 6:00am and 3:00pm on Tuesday.
The IPMA has also placed a yellow warning in the districts
of Viana do Castelo, Braga, Porto, Aveiro, Coimbra, Leiria, Lisbon, Setúbal,
Beja and Faro due to rough seas, with northwest waves of 4 to 5 metres expected.