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Rain, snow, wind and high sea alerts – Issued by the National Civil Protection Authority ANPC

Following contact with the Portuguese Institute of Ocean and Atmosphere (IPMA), held today 13th February, the National Relief Operations Command (CNOS) of the National Civil Protection Authority (ANPC), and according to the weather information updated today, it is noted for the next days a worsening of weather conditions, with particular focus on regions north of the river Tagus and, in particular, in the Minho and Douro Litoral, with an occurrence of:

  • Persistent rainfall, for strong times (which may accumulate up to 40-50 mm in the next 6 hours on the coast north of the Cabo Mondego), to the regime of showers may be accompanied of storm and hail on Sunday (especially in the northern and central regions);
  • Maritime agitation on the west coast with waves northwest between 4 and 5 meters high significant, increasing from Sunday morning to 5-7 meters, and the north Cape Raso could reach 7-8 meters from Sunday afternoon until the morning Monday. The maximum height is between 10 and 12 meters, reaching 14 meters north of Cabo Raso;
  • Strong wind from the west-southwest, running north-west from the end of Saturday with gusts up 100 km / h on the coast and up to 120 km / h highlands, with the possibility of more extreme situations wind, keeping the wind until early Tuesday;
  • Snowfall in the north and centre above 1600 meters, gradually descending to height up to 600 meters on Sunday.

Relevant hydrological information:

  • Possibility of flash floods in historically vulnerable areas, most likely in basins of the rivers Minho, Lima, Cávado, Ave, Vouga, Douro and Mondego, cannot be excluded flood situations caused by increased flow rate of the main water lines;
  • The soil saturation conditions to favour the possibility of landslides in steeper slope zones.

 

Effects expected

Given the above situation, you may experience the following effects:

  • floor slippery road and eventual formation of ground water;
  • possibility of flash floods in urban areas by the accumulation of rainwater or inadequacy of drainage systems;
  • flood Possibility for transshipment water lines in areas historically more vulnerable;
  • Flooding of underground urban structures with drainage deficiencies;
  • Damage to vehicle-mounted or suspended structures;
  • Ability to falling branches or trees due to strong wind;
  • Possible accidents along the coastline.

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