Southern Taiwan Heavy-Rain Advisory Reissued; South Cross-Island Highway Closure and Wanli River Channel Red Remain
Original Chinese title: 南部大雨特報再發布；南橫封閉、萬里溪河道red持續
The Central Weather Administration reissued a heavy-rain advisory at 21:30 on August 28 for Tainan, Kaohsiung, and Pingtung, extending into August 29. Mountain areas in Tainan, Taoyuan, Namasia, and Maolin in Kaohsiung, and Indigenous areas in Pingtung are under watch / heavy rain, not red. The Highway Bureau has not issued a formal reopening notice for Provincial Highway 20 temporary route 105, 0K-44K from Meishankou to Xiangyang, so Taoyuan and Haiduan remain under transport / watch. ARDSWC lists zero red and zero yellow debris-flow and large-scale-landslide alerts. DGPA listed no work-or-class suspension as of 23:34 on August 28. The site's overall red remains only because the officially mapped Wanli River channel red alert has not been formally lifted; August 28 monitoring says the dam remains intact, overflow is stable, and effects are confined to the channel.
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00:02 Update: Southern Taiwan Heavy-Rain Advisory Reissued; South Cross-Island Highway Closure and Wanli River Channel Red Remain
Information time: August 29, 2026, 00:02.
Official sources: Central Weather Administration, Highway Bureau, Agency of Rural Development and Soil and Water Conservation, Water Resources Agency disaster information service, Directorate-General of Personnel Administration, Hualien Branch of the Forestry and Nature Conservation Agency, and relevant local authorities.
Indigenous areas affected: At 21:30 on August 28, the Central Weather Administration reissued a heavy-rain advisory stating that southwest winds could bring localized heavy rain to southern Taiwan from the evening of August 28 into August 29. It also warned of lightning, strong gusts, rapid stream rises, and, after repeated rainfall, landslides and rockfall in mountain areas. The official warning graphic lists Tainan, Kaohsiung, and Pingtung under heavy rain. The Tainan mountain region; Taoyuan, Namasia, and Maolin in Kaohsiung; and Sandimen, Wutai, Majia, Taiwu, Laiyi, Chunri, Shizi, and Mudan in Pingtung are therefore classified as `watch / heavy rain`, not `red`.
Roads and public services: The Highway Bureau announced on August 28 that Provincial Highway 20 temporary route 105, 0K-44K from Meishankou to Xiangyang, would be closed from 07:00 because southwest winds and earlier rainfall had saturated slopes and increased rockfall and landslide risk. This scan found no formal reopening notice. The closure directly affects South Cross-Island Highway travel between Taoyuan District in Kaohsiung and Haiduan Township in Taitung, so both remain under `transport / watch`, not `red`. The Central Weather Administration's land strong-wind advisory page currently lists no active area, so Lanyu's earlier `strong-wind watch` is no longer carried forward.
Nationwide regional scan: In the north, Wulai, Fuxing, Jianshi, Wufeng, Nanzhuang, and Tai'an are not included in the 21:30 heavy-rain advisory, and this scan found no new Indigenous-area road interruption, evacuation, shelter activation, or work-or-class suspension; they remain under `monitoring`. In central Taiwan, Heping, Ren'ai, Xinyi, and Alishan are not included in the 21:30 advisory, and ARDSWC red and yellow alerts remain at zero, so they remain under `monitoring`. In the south, the Tainan mountain region, Taoyuan, Namasia, Maolin, and the listed Pingtung Indigenous areas are under `watch / heavy rain`; Taoyuan is also under a South Cross-Island Highway transport watch. In the east, Datong and Nan'ao in Yilan, Xiulin, Wanrong, and Zhuoxi in Hualien, and Beinan, Yanping, Daren, Jinfeng, Taimali, Dawu, and Lanyu in Taitung remain under weather `monitoring`; Haiduan remains under `transport / watch` because the South Cross-Island Highway section is closed. The existing formal `red` inside the officially mapped Wanli River channel has not been found formally lifted and remains limited to that mapped channel.
Alert level: ARDSWC currently lists zero red and zero yellow debris-flow alerts and zero red and zero yellow large-scale-landslide alerts. The Directorate-General of Personnel Administration listed no work-or-class suspension as of 23:34 on August 28. This scan found no new Indigenous-area level-one inundation alert, formal evacuation, shelter activation, transport-wide suspension, major agricultural-loss warning, or other public-service interruption escalation. If the site's overall `red` remains displayed, its only basis is the Forestry and Nature Conservation Agency's previously established red alert inside the officially mapped Wanli River channel. The August 28 monitoring says the natural dam remains intact, overflow is stable, effects remain confined to the channel, and no formal notice lifting the channel red alert has been found.
Recommended action: Avoid unnecessary entry into mountain valleys, steep slopes, and rockfall-prone roads in Tainan, Kaohsiung, and Pingtung, and watch for short-duration intense rainfall and rapid stream rises. Do not enter the Meishankou-Xiangyang section of the South Cross-Island Highway until the Highway Bureau formally reopens it. Do not enter the officially mapped Wanli River channel until its formal red alert is lifted.
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This English translation is based on the Traditional Chinese emergency brief and official updates from the Central Weather Administration, Highway Bureau, Agency of Rural Development and Soil and Water Conservation, Water Resources Agency, Directorate-General of Personnel Administration, Forestry and Nature Conservation Agency, and relevant local authorities. It does not replace official notices.