Typhoon Bavi has brought heavy rain and strong winds to central South Korea after weakening into an extratropical cyclone [1, 2].

The weather system poses a significant risk to infrastructure and public safety in the Seoul metropolitan area and surrounding provinces due to the intensity of the precipitation and wind gusts.

The storm, identified as the ninth typhoon of the season, weakened into a tropical depression over China on Monday afternoon [1]. As it transitioned into an extratropical cyclone, it interacted with cold air to trigger severe weather conditions across the peninsula [1, 2].

Heavy rainfall has concentrated in the western regions of Incheon and Gyeonggi province, where precipitation rates reached between 30 and 40 mm per hour [1]. In other areas, including the Seoul metropolitan region and Gangwon province, rainfall has reached up to 50 mm per hour [2].

Wind speeds have also surged in coastal and central regions. In Taean, South Chungcheong province, wind gusts were recorded at 19.6 meters per second, which is approximately 70 km/h [1].

"The cause of this heavy rain accompanied by strong winds is Typhoon Bavi, which has weakened into an extratropical cyclone," a YTN News anchor said [1].

Local officials expressed concern over potential damages as the system moved through the region. Reporter Kim Min-kyung said that the storm had weakened over China before moving toward the peninsula [1].

"During the night, the metropolitan area and Gangwon are expected to see strong rain of up to 50 mm per hour accompanied by gusts, and there are concerns about damage," an anchor said [2].

“Typhoon Bavi has brought heavy rain and strong winds to central South Korea after weakening into an extratropical cyclone.”

The transition of Typhoon Bavi from a tropical system to an extratropical cyclone demonstrates how weakening storms can still produce dangerous conditions. By interacting with colder air masses, the system maintained enough energy to deliver concentrated rainfall and high wind speeds to densely populated areas like Seoul, increasing the risk of urban flooding and wind-related structural damage.