Heavy rain of up to 300mm or more is expected in the metropolitan area and central and southern Gangwon regions over the weekend. As a medium-sized low-pressure system develops on a stationary front, it could rain 50∼80mm per hour, and especially between dawn on the 18th and dawn on the 19th, precautions against heavy rain are important. Rainfall is expected to vary by region, with the metropolitan area and Gangwon province expected to receive the most. The rainy season is expected to continue into next week, with a high probability of rain nationwide from the 21st to the 24th.