The announcement released around 11:00 indicated that it is not possible to predict the duration of the disruption, which may be extended.
The Lisbon Metro operates daily with four lines: Yellow (Rato-Odivelas), Green (Telheiras-Cais do Sodré), Blue (Reboleira-Santa Apolónia), and Red (Aeroporto-São Sebastião).
Typically, the metro runs from 06:30 to 01:00.
