Weather forecasts indicate that the Portuguese mainland will be affected by the Bruna depression. Initially, the arrival of an associated frontal system is expected to begin on the morning of Sunday, November 8th. Successive frontal waves are expected to persist at least until the end of next week, the 13th.
The Portuguese Institute for Sea and Atmosphere (IPMA) clarified that the depression is located north of the Azores archipelago, situated within an extensive low-pressure area where new centers will form in the coming days. This weather condition will affect not only mainland Portugal but also the autonomous regions of Madeira and the Azores.
On the mainland, persistent and sometimes heavy rain is expected starting from Sunday. These periods may occasionally be accompanied by thunderstorms. IPMA warned that the largest amounts of precipitation should occur during the passage of the different frontal waves throughout the week, potentially exceeding 200 milliliters (ml), especially in mountainous areas, until the 13th.
Regarding wind, it will blow from the south quadrant, intensifying starting on Sunday, the 8th, with gusts that could reach 70 km/h on the west coast and in the highlands, according to the institute's warning.
Concerning the sea, IPMA predicts southwest waves with heights between 1 and 2 meters on the western coast starting Saturday, the 7th, rising to 4 to 5 meters on Monday, the 9th. On the southern coast of the Algarve, southwest waves of 1 to 1.5 meters are forecast for Sunday (the 8th), evolving into southwest waves of 2 to 3 meters on Monday (the 9th).
The institute emphasized that weather warnings will be issued if the situation requires it, recommending that citizens follow updates. Furthermore, eight of the 18 mainland districts, including Viana do Castelo, Porto, Braga, Aveiro, Coimbra, Leiria, Lisbon, and Setúbal, will be under yellow warning (the least severe level of a three-level scale) between 3:00 PM on Friday and 12:00 AM on Saturday due to the forecast of rain.
The Bruna depression is already influencing the weather in the Azores, and this influence is expected to continue in the coming days, bringing precipitation, wind, and sea agitation. Madeira will also feel the effects of the depression with the arrival of frontal waves on Saturday and Sunday, with forecasts of rain, strong wind, and intense wave action, according to IPMA.
