Lagos, Aljezur, Loulé, São Brás de Alportel, Tavira and Alcoutim, are all on the highest level of alert, while seven other areas, located in the Algarve and the southern Alentejo, have been issued with the second highest level of readiness by the Portuguese Met Office.

The advisory is issued based on the weather conditions experienced in the preceding 24 hours, such as temperature readings, humidity, wind speeds and the amount of rainfall.