Heavy rain on the south coast and Jeju: safety points to check first on the morning of August 16
As of the morning of August 16, heavy rain is likely to continue around the south coast, Jeju, and the Jirisan area. Reports said some southern areas could see around 250 mm of accumulated rain, with very intense bursts of 60 to 70 mm per hour in some places. For holiday travelers, the key question is not simply whether it rains, but whether the roads, rivers, underground spaces, and campsites on your route are safe.
Key summary
- Be cautious about heavy rain, strong winds, and high waves around the south coast, Jirisan, and Jeju.
- Some parts of South Jeolla were reported to have intense short-term rain and emergency heavy-rain alerts.
- Avoid underpasses, riverside paths, valleys, campsites, and landslide-prone areas.
- Before traveling, check weather warnings, road closures, flights, and ferry operations together.
Confirmed facts
| Item | Confirmed detail | Reading point |
|---|---|---|
| Rain area | Forecasts and reports said rain would fall nationwide, with stronger rain focused on the south and Jeju. | Warnings vary by region, so check based on your exact location. |
| Rain intensity | Some reports mentioned around 250 mm near the south coast and Jirisan, and bursts around 70 mm per hour. | Short, intense rain can quickly cause road flooding and river torrents. |
| Alert cases | In areas such as Mokpo in South Jeolla, reports mentioned emergency alerts and hourly rain in the 60 mm range. | Disaster alerts should be treated as a basis for immediate action, not just information. |
| Risk zones | Riversides, underpasses, valleys, mountainsides, coastlines, and campsites can remain dangerous after rain weakens. | If a route is closed, detour; do not enter flooded roads. |
Issues to watch
Damage from heavy rain does not happen only while rain is falling. Slopes and cut surfaces can collapse later after absorbing water, and river levels can rise after upstream rainfall. During holidays, movement toward valleys, campsites, and coastal roads increases exposure. A navigation app’s route and a currently closed road may not match, so local government messages and police or fire-service guidance should take priority.
What to watch next
- Check whether any areas move from heavy-rain advisories to heavy-rain warnings.
- Watch road controls, riverside path closures, and campsite evacuation notices in South Jeolla, South Gyeongsang, and Jeju.
- Recheck flight, ferry, and offshore conditions before departure.
- Even after rain weakens, watch for landslides, rockfall, and flooded roads.
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