LISBON, Jan. 19 (Xinhua) -- Portugal has issued a yellow alert for a cold front, the third highest level in the four-tier alert system, the Portuguese Institute for Sea and Atmosphere said on Wednesday.
The severe cold weather is expected to last until Saturday and is due to a cold and dry continental air mass.
Temperatures in the Portuguese capital will vary between 3 and 12 degrees Celsius while in other parts of the country like Vila Real, around 400 km north of Lisbon, temperatures will be from -3 to 5 degrees Celsius.
Under low temperatures, the authorities have to come up with an action plan to help the homeless, offering shelter and hot food.
