Following the contact with the Portuguese Institute of the Sea and the Atmosphere (IPMA) held today, March 13, by the National Civil Protection Authority (CNPC) of the National Civil Protection Authority (ANPC); from 14th March there will be a worsening of weather conditions, with precipitation, stronger winds and snow, together with rough seas (along the entire coast):

  • Tomorrow (14MAR) precipitation is expected to occur, with strong winds (throughout the day) and snowfall above altitude of 1800 meters, decreasing (from the afternoon) to above 1000 meters, in the Centre and North regions.
  • Cumulative rainfall may reach 30 mm between 00:00 and 12:00 hrs and 40 mm in the following 12 hours, especially north of the Tagus.
  • The wind may reach maximum gusts of 100 km / h and can be stronger in the most exposed and / or elevated areas.
  • In the morning (14MAR) a strong sea breeze is expected, and it is forecast that from 3:00 p.m., the waves will be from the west / northwest and reach a height of 4 to 5 meters (on the whole coast) lasting until the morning of 16MAR (Friday).

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In view of the situation described, the following effects may occur:

  • Slippery road surface and possible formation of water and ice patches;
  • Possibility of rapid flooding in urban areas, due to the accumulation of rainwater or insufficient drainage systems;
  • Possibility of flooding by transhipment of water lines in the most vulnerable areas;
  • Floods of underground urban structures with where there are drainage deficiencies;
  • Damage to mounted or suspended structures;
  • Drainage problems in urban systems, especially those occurring during periods of high tide, and may cause flooding in the most vulnerable places;
  • Possibility of falling branches or trees due to stronger winds;
  • Possible coastal shoreline accidents;
  • Landslips caused by instability of slopes due to loss of consistency due to saturation of soil in water;
  • Obstruction of roadways by falling trees, landslides, stones or other structures;

The ANPC reminds people of the need to take appropriate action, particularly in the most vulnerable areas, including the main self-protection measures as follows in these situations:

  • Ensure that rainwater drainage systems are cleared and that inert aggregates and other objects that can be drawn in. or obstruct the free flow of water, are removed;
  • Adopt a defensive driving, reducing the speed and taking special care with the possible accumulation of snow and the formation of water patches on the roads;
  • Placing snow chains on vehicles when driving in areas covered by snow and / or ice;
  • Avoid crossing flooded areas in order to prevent people and / or vehicles falling into holes in the pavement or open sewers;
  • Ensure that loose structures, namely scaffolding, placards and other suspended structures are properly secured;
  • Take special care in passing by and staying near wooded areas, keeping in mind the possibility of falling branches and trees due to strong wind;
  • Take special care in passing along the coastline and riverside areas more vulnerable to coastal gullies; avoid remaining in these places;
  • Do not engage in activities related to the sea, such as sport fishing, water sports and walks by the sea; avoid the parking of vehicles very close to the seafront;
  • Avoid travelling and staying in the highlands where the gusts of wind are strong or very strong;
  • Keep an eye on meteorological information and Civil Protection and Security Forces indications.