Typhoon Champi approached waters south of Jeju on Sunday after three days of heavy rain had already saturated the island. As of 7:30 a.m., the storm was about 360 kilometers south-southwest of Seogwipo and had weakened from intensity level 2 to level 1, according to weather reports citing the Korea Meteorological Administration.
Rain totals climb across Jeju
Rainfall since Friday reached 279 millimeters at Samgakbong on Hallasan, 254 millimeters at Jindallaebat and 250 millimeters at Seongpanak. Several other mountain, mid-elevation and eastern locations exceeded 200 millimeters, showing that the heaviest rain extended beyond the summit area.
- Highest reported rainfall
- 279 millimeters at Hallasan's Samgakbong
- Storm position
- About 360 kilometers south-southwest of Seogwipo
- Marine warning
- Typhoon warning for the outer waters south of Jeju
A typhoon warning was in force for the outer waters south of Jeju. Heavy-rain advisories covered the island's mountain and mid-elevation areas, while strong-wind advisories applied across most of Jeju outside its northern and western districts. Rough-sea alerts also covered surrounding waters apart from the northern coastal zone.
The rain developed as moisture flowing from Champi and a subtropical high east of the Korean Peninsula met colder air already positioned near the country. That interaction formed a rain band that began over Jeju and moved northward, bringing the risk of strong rain and wind to southern coastal areas as well as the island.
Residents, travelers and maritime operators face continuing disruption from saturated ground, strong gusts and rough seas. Hallasan trails were closed, ferry services were canceled and outdoor events were called off as conditions worsened. Further changes to marine and weather warnings will depend on Champi's track and intensity, while additional rainfall could heighten risks in areas that have already received more than 200 millimeters.