A 42-year-old woman died and at least two other people were injured following the overnight storms, which caused chaos across the country at the start of the week.
Besides the tragic incident reported in the northern city of Marco de Canaveses, Storm Ana is said to have triggered almost 3,000 emergency situations, most of them relating to trees falling and flash floods.
Firefighters and civil protection authorities nationwide responded to hundreds of callouts.
Eight river-mouths on mainland Portugal were closed and six flights to and from Lisbon airport were also cancelled early on Monday morning because of the bad weather experienced in Portugal and elsewhere in Europe.
Heavy rain and strong winds saw half a dozen flights grounded for the safety of passengers and crew. Flights to Paris, Madrid and Munich were cancelled, as were flights arriving from Gatwick, Heathrow and Milan.
The Portuguese Met Office forecast that the overnight tempest would be replaced by cold and icy weather for much of this week, especially in high-lying areas, where the first snowfall of the year’s end was expected to fall.
In related news, meteorological buoys at sea have revealed that Storm Ana, which ripped through Portugal during the early hours of Monday morning, caused giant swells out at sea. One of the buoys off Nazaré gave a reading of a wave measuring just over 14 metres. The buoys belong to the Navy and are managed by the Met Office.
Monday morning’s savage weather also destroyed a 45-metre metal tower near the lighthouse on Cabo da Roca.
The tower, part of the Portuguese coastline’s Integrated Command and Control System, was installed in 2013, which at the time caused an uproar among many who said the structure ruined the landscape of Europe’s most westerly point.