Due to the snow that started in the night of December 16, the path to the top of Namsan is covered with snow. The snow has been the heaviest this winter. Alone on December 17, it snowed 31.2cm in Daegwalryeong and 12.8 in Seoul as the temperature plummeted. Because of the snow, roads in Seoul, Gyeonggi, and Chungcheong region are expected to be icy and cause heavy traffic jam during the rush hours on December 18.