Frozen tidal flats are seen in Hwaseong, Gyeonggi Province, Thursday. A cold spell is forecast to continue through the weekend and early next week, with temperatures expected to fall as low as minus 9 degrees Celsius in Seoul. Most parts of the country are expected to see 1-5 centimeters of snow from Friday to Saturday, with some mountainous regions expected to receive up to 15 centimeters. Yonhap