Heavy-rain advisory lifted for Chiayi and Kaohsiung mountain areas; reservoir-release reds continue

00:14 Indigenous-area disaster brief

Information time: September 15, 2026, 00:14.

Official sources: Central Weather Administration heavy-rain advisory, CWA land strong-wind advisory, Water Resources Agency combined warnings, WRA reservoir-release warnings, Forestry and Nature Conservation Agency barrier-lake monitoring, Agency of Rural Development and Soil and Water Conservation slope-hazard alerts, Directorate General of Highways Highway 7 Daman notice, and Directorate-General of Personnel Administration.

Affected Indigenous areas and levels:

• Wulai, New Taipei; Datong and Nan'ao, Yilan: The CWA heavy-rain advisory issued at 20:35 on September 14 remains active. Wulai and the two Yilan mountain townships are under `weather / watch / yellow`, not red. With the northeast monsoon, mountain areas should watch for local heavy rain, landslides, rockfall and rapidly rising streams.
• Tainan mountain areas: The September 14 orange heavy-rain advisory expired at 23:00. Tainan has left the current heavy-rain warning area and returns to `weather / monitoring`. The Dongshan level-two inundation watch and thunderstorm alert had already ended. The WRA currently reports no inundation or river-level warning.
• Baoshan Second, Dapu and Hushan reservoirs: At 00:14, the WRA live page still lists all three as releasing water under level-one `red` warnings. Red is confined to officially listed downstream riverbeds and impact areas along Shijing Creek, Emei Creek and the Beigang River. It does not apply to Jianshi, Wufeng, Heping, Ren'ai, Xinyi, Alishan or another unlisted Indigenous area, and does not mean an entire listed township is under a blanket red alert.
• Land strong wind: The CWA's 22:25 update places officially listed local areas in Taoyuan, Hsinchu, Miaoli, Taichung, Chiayi, Pingtung and Taitung under `weather / watch / yellow` through the evening of September 15. This is not red, and county-level lights must not be automatically applied to unlisted mountain Indigenous areas.
• Existing status: The previous Wanli Creek alert-zone notice expired at 20:00 and no renewal appeared in this scan. The forestry monitoring page shows zero sites under warning and three under monitoring, so Wanli Creek is `barrier-lake / monitoring`. This does not independently declare the former alert zone open. Highway 7 at 48.9K in Daman, Fuxing, remains closed under `transport / watch`.

Nationwide assessment:

• North: Wulai is under yellow rain watch, and the Fuxing road closure continues. Baoshan Second and Dapu release reds are limited to listed downstream riverbeds, not Jianshi or Wufeng. No new level-one inundation warning, slope-alert escalation, evacuation, shelter, school closure or utility disruption was found for the other covered northern Indigenous areas.
• Central: The Hushan release red is limited to listed Beigang River downstream areas, not Heping, Ren'ai, Xinyi or Alishan. No new official road, bridge, evacuation, shelter or public-service change was found for the other covered central Indigenous areas.
• South: Tainan's orange rain watch has ended and there is currently no level-one inundation warning. Officially listed local areas in Pingtung are under yellow wind watch, not red. No new slope escalation, official stream-rise warning, transport suspension or major public-service disruption was found for covered Kaohsiung and Pingtung Indigenous areas.
• East: Datong and Nan'ao are under yellow rain watch; Wanli Creek remains under monitoring. No new official road, bridge, school, shelter, transport, water or power change was found for the other covered Hualien and Taitung Indigenous areas.

No level-one inundation warning, debris-flow or large-scale-landslide red/yellow escalation, resident evacuation, shelter opening, school-level closure, major agricultural loss or new major Indigenous-area public-service disruption was found. At 23:49 on September 14, the DGPA reported no work or class suspensions.

Recommended action: In Wulai, Datong and Nan'ao, stay away from streams, riverbeds and unstable slopes. Secure outdoor objects and watch for transport delays in yellow wind zones. Leave the listed downstream riverbeds for all three reservoir-release reds immediately. Highway 7 at Daman remains closed. Official real-time notices govern.

08:13 update

Information time: September 15, 2026, 08:13.

Official sources: Central Weather Administration heavy-rain advisory, CWA land strong-wind advisory, Water Resources Agency combined warnings, Forestry and Nature Conservation Agency barrier-lake monitoring, Agency of Rural Development and Soil and Water Conservation slope-hazard alerts, Directorate General of Highways Highway 7 Daman notice, and Directorate-General of Personnel Administration.

Affected Indigenous areas and levels:

• Wulai, New Taipei; Datong and Nan'ao, Yilan: At 07:10 on September 15, the CWA lifted the heavy-rain advisory. The previous `weather / watch / yellow` ended, and all three areas returned to `weather / monitoring`. This was the end of a non-red watch.
• Baoshan Second, Dapu and Hushan reservoirs: At 08:13, the WRA live page still listed all three as releasing water under level-one `red` warnings. Red remains confined to officially listed downstream riverbeds and impact areas along Shijing Creek, Emei Creek and the Beigang River. It does not apply to Jianshi, Wufeng, Heping, Ren'ai, Xinyi, Alishan or another unlisted Indigenous area.
• Land strong wind: The CWA's 04:23 update keeps officially listed local areas in Taoyuan, Hsinchu, Miaoli, Taichung, Chiayi, Pingtung and Taitung under `weather / watch / yellow` through the evening. This is not red, and county-level lights must not be automatically applied to unlisted mountain Indigenous areas.
• Existing status: The forestry page still reports zero barrier lakes under warning and three under monitoring, so Wanli Creek remains `barrier-lake / monitoring`. Highway 7 at 48.9K in Daman, Fuxing, remains closed under `transport / watch`.

Nationwide assessment:

• North: Wulai's rain watch has ended; the Fuxing road closure continues. Baoshan Second and Dapu release reds are limited to listed downstream riverbeds, not Jianshi or Wufeng. No new level-one inundation warning, slope-alert escalation, evacuation, shelter, school closure or utility disruption was found for other covered northern Indigenous areas.
• Central: The Hushan release red is limited to listed Beigang River downstream areas, not Heping, Ren'ai, Xinyi or Alishan. Officially listed local areas in Taichung and Chiayi County remain under yellow wind watch. No new Indigenous-area road, bridge, evacuation, shelter or public-service change was found.
• South: There is currently no heavy-rain, inundation or river-level warning. Officially listed local areas in Pingtung remain under yellow wind watch, not red. No new slope escalation, official stream-rise warning, transport suspension or major public-service disruption was found.
• East: The rain watches for Datong and Nan'ao have ended. Officially listed local areas in Taitung remain under yellow wind watch, while Wanli Creek remains under monitoring. No new official road, bridge, school, shelter, transport, water or power change was found for other covered eastern Indigenous areas.

The WRA currently reports no inundation or river-level warning. No debris-flow or large-scale-landslide red/yellow escalation, resident evacuation, shelter opening, school-level closure, major agricultural loss or new major Indigenous-area public-service disruption was found. At 08:01 on September 15, the DGPA reported no work or class suspensions.

Recommended action: Although the rain advisory has ended for Wulai, Datong and Nan'ao, continue to watch local mountain rainfall. Secure outdoor objects and watch for transport delays in yellow wind zones. Leave the listed downstream riverbeds for all three reservoir-release reds immediately. Highway 7 at Daman remains closed. Official real-time notices govern.

12:06 update

Information time: September 15, 2026, 12:06.

Official sources: Central Weather Administration heavy-rain advisory, CWA land strong-wind advisory, Water Resources Agency combined warnings, Forestry and Nature Conservation Agency barrier-lake monitoring, Agency of Rural Development and Soil and Water Conservation slope-hazard alerts, Directorate General of Highways Highway 7 Daman notice, Taitung Airport, and Directorate-General of Personnel Administration.

Affected Indigenous areas and levels:

• Wulai, New Taipei; Datong and Nan'ao, Yilan: At 09:40 on September 15, the CWA reissued a heavy-rain advisory for New Taipei mountain areas and both the plains and mountain areas of Yilan. Wulai, Datong and Nan'ao returned to `weather / watch / yellow`, not red. With the northeast monsoon and active convection, watch for short-duration heavy rain, strong gusts, landslides, rockfall and rapidly rising streams.
• Reservoir releases: At 12:06, the WRA live page reported no active reservoir-release warning. The previous level-one `red` release warnings for Baoshan Second, Dapu and Hushan reservoirs have ended. The end of those warnings does not independently authorize entry into any restricted riverbed; local and on-site notices still govern. The WRA also reported no inundation or river-level warning.
• Land strong wind: The CWA's 10:27 update keeps officially listed local areas in Taoyuan, Hsinchu, Miaoli, Taichung, Chiayi, Pingtung and Taitung under `weather / watch / yellow`, extending the affected period through the evening of September 16. This is not red, and county-level lights must not be automatically applied to unlisted mountain Indigenous areas.
• Taitung–Lanyu air service: At 12:09, Taitung Airport's live board showed Daily Air flight 7507, scheduled for 11:50 to Lanyu, as delayed, so the route is `transport / watch`. Flight 7511 at 15:50 was still shown on time. Actual operations remain subject to the airline's latest notice.
• Existing status: The forestry monitoring page still reports zero barrier lakes under warning and three under monitoring, so Wanli Creek remains `barrier-lake / monitoring`. Highway 7 at 48.9K in Daman, Fuxing, remains closed under `transport / watch`.

Nationwide assessment:

• North: Wulai is again under yellow rain watch, while the Fuxing road closure continues. The previous reservoir-release reds have ended; officially listed local areas in Taoyuan, Hsinchu and Miaoli remain under yellow wind watch. No new level-one inundation warning, slope-alert escalation, evacuation, shelter, school closure or utility disruption was found for other covered northern Indigenous areas.
• Central: The previous Hushan reservoir-release red has ended. Officially listed local areas in Taichung and Chiayi County remain under yellow wind watch. No new heavy-rain warning, Indigenous-area road or bridge disruption, evacuation, shelter or public-service change was found for Heping, Ren'ai, Xinyi or Alishan.
• South: There is currently no heavy-rain, inundation or river-level warning. Officially listed local areas in Pingtung remain under yellow wind watch, not red. No new slope escalation, official stream-rise warning, transport suspension or major public-service disruption was found for covered Kaohsiung, Pingtung or Tainan mountain areas.
• East: Datong and Nan'ao are again under yellow rain watch. Officially listed local areas in Taitung remain under yellow wind watch, flight 7507 from Taitung to Lanyu is delayed, and Wanli Creek remains under monitoring. No new official road, bridge, school, shelter, water or power change was found for other covered Hualien and Taitung Indigenous areas.

No debris-flow or large-scale-landslide red/yellow escalation, resident evacuation, shelter opening, school-level closure, major agricultural loss or new major Indigenous-area public-service disruption was found. On September 15, the DGPA continued to report no work or class suspensions.

Recommended action: In Wulai, Datong and Nan'ao, stay away from streams, riverbeds and unstable slopes. Secure outdoor objects and watch for transport delays in yellow wind zones. Taitung–Lanyu passengers should confirm flight status with the airline. Highway 7 at Daman remains closed. Official real-time notices govern.

16:01 update

Information time: September 15, 2026, 16:01.

Official sources: Central Weather Administration heavy-rain advisory, CWA land strong-wind advisory, Water Resources Agency combined warnings, Forestry and Nature Conservation Agency barrier-lake monitoring, Agency of Rural Development and Soil and Water Conservation slope-hazard alerts, Directorate General of Highways Highway 7 Daman notice, Taitung Airport daily flights, and Directorate-General of Personnel Administration.

Affected Indigenous areas and levels:

• Taitung–Lanyu air service: At 16:00, Taitung Airport's full daily board listed Lanyu-bound Daily Air flights 7501 and 7507 as cancelled. Flight 7507 had only been delayed in the previous scan, so the service is now under `transport / watch`. Flight 7511 departed normally at 15:50; this is therefore not a route-wide suspension and is not red. Actual operations remain subject to the airline's latest notice.
• Wulai, New Taipei; Datong and Nan'ao, Yilan: The CWA heavy-rain advisory issued at 09:40 remains active at `weather / watch / yellow`, not red. Watch for short-duration heavy rain, landslides, rockfall and rapidly rising streams.
• Land strong wind: The CWA's 10:27 yellow advisory remains active for officially listed local areas in Taoyuan, Hsinchu, Miaoli, Taichung, Chiayi, Pingtung and Taitung through the evening of September 16. This is `weather / watch / yellow`, not red, and must not be automatically applied to unlisted Indigenous areas.
• Water conditions and existing status: At 16:01, the WRA still reported no inundation, river-level or reservoir-release warning. Wanli Creek remains `barrier-lake / monitoring` on the forestry monitoring page. Highway 7 at 48.9K in Daman, Fuxing, remains closed under `transport / watch`.

Nationwide assessment:

• North: Wulai remains under yellow rain watch, and the Fuxing road closure continues. Officially listed local areas in Taoyuan, Hsinchu and Miaoli remain under yellow wind watch. No new level-one inundation warning, slope-alert escalation, evacuation, shelter, school closure or utility disruption was found for other covered northern Indigenous areas.
• Central: Officially listed local areas in Taichung and Chiayi County remain under yellow wind watch. No new heavy-rain or thunderstorm warning, road or bridge disruption, evacuation, shelter or public-service change was found for Heping, Ren'ai, Xinyi or Alishan.
• South: Officially listed local areas in Pingtung remain under yellow wind watch, not red. No heavy-rain, inundation or river-level warning, slope-alert escalation, official stream-rise warning, transport suspension or major public-service disruption was found for covered Tainan, Kaohsiung and Pingtung Indigenous areas.
• East: Datong and Nan'ao remain under yellow rain watch. Officially listed local areas in Taitung remain under yellow wind watch. Lanyu-bound flights 7501 and 7507 are cancelled, flight 7511 departed, and Wanli Creek remains under monitoring. No new official road, bridge, school, shelter, water or power change was found for other covered Hualien and Taitung Indigenous areas.

No debris-flow or large-scale-landslide red/yellow escalation, resident evacuation, shelter opening, school-level closure, major agricultural loss or new major Indigenous-area public-service disruption was found. The DGPA continued to report no work or class suspensions.

Recommended action: Taitung–Lanyu passengers should confirm flight status with the airline before departure. In Wulai, Datong and Nan'ao, stay away from streams, riverbeds and unstable slopes. Secure outdoor objects in yellow wind zones. Highway 7 at Daman remains closed. Official real-time notices govern.

20:22 update

Information time: September 15, 2026, 20:22.

Official sources: Central Weather Administration heavy-rain advisory, CWA land strong-wind advisory, Water Resources Agency combined warnings, WRA reservoir-release warnings, Forestry and Nature Conservation Agency barrier-lake monitoring, Agency of Rural Development and Soil and Water Conservation slope-hazard alerts, Directorate General of Highways Highway 7 Daman notice, Taitung Airport daily flights, and Directorate-General of Personnel Administration.

Affected Indigenous areas and levels:

• Alishan, Chiayi; Taoyuan, Namasia and Maolin, Kaohsiung: At 16:50, the CWA shifted its heavy-rain advisory to the mountain areas of Chiayi and Kaohsiung. All four areas are under weather / watch / yellow, not red. Watch for short-duration heavy rain, lightning, strong gusts, landslides, rockfall and rapidly rising streams.
• Wulai, New Taipei; Datong and Nan'ao, Yilan: All three have left the 16:50 heavy-rain advisory area and returned from weather / watch / yellow to weather / monitoring. This ends a yellow watch and is not the lifting of a red alert.
• Baoshan Second, Dapu and Hushan reservoirs: At 20:22, the WRA live page again listed all three as releasing water under level-one red warnings. Red is confined to officially listed downstream riverbeds and impact areas along Shijing Creek, Emei Creek and the Beigang River. It does not apply to Jianshi, Wufeng, Heping, Ren'ai, Xinyi, Alishan or another unlisted Indigenous area, and does not mean an entire county or township is red.
• Land strong wind: The CWA's 16:39 update keeps officially listed local areas in Taoyuan, Hsinchu, Miaoli, Taichung, Chiayi, Tainan, Pingtung and Taitung under weather / watch / yellow through the evening of September 16. This is not red. Tainan is newly included in this update, but county-level lights must not be automatically applied to unlisted mountain Indigenous areas.
• Taitung–Lanyu air service: Taitung Airport's 20:00 full daily board still lists Lanyu-bound flights 7501 and 7507 as cancelled, while flight 7511 departed normally. The service remains transport / watch; this is not a route-wide suspension or red alert.
• Water conditions and existing status: The WRA reports no inundation or river-level warning. Wanli Creek remains barrier-lake / monitoring on the forestry page. Highway 7 at 48.9K in Daman, Fuxing, remains closed under transport / watch.

Nationwide assessment:

• North: Wulai's rain watch has ended, while the Fuxing road closure continues. Officially listed local areas in Taoyuan, Hsinchu and Miaoli remain under yellow wind watch. Baoshan Second and Dapu reservoir-release reds are limited to listed downstream riverbeds, not Jianshi or Wufeng. No new level-one inundation warning, slope-alert escalation, evacuation, shelter, school closure or utility disruption was found for other covered northern Indigenous areas.
• Central: Alishan is newly under yellow rain watch, and officially listed local areas in Taichung and Chiayi remain under yellow wind watch. The Hushan release red is limited to listed Beigang River downstream areas, not Heping, Ren'ai, Xinyi or Alishan. No new Indigenous-area road or bridge disruption, evacuation, shelter or public-service change was found.
• South: Taoyuan, Namasia and Maolin are newly under yellow rain watch. Officially listed local areas in Tainan and Pingtung are under yellow wind watch; none of these weather watches is red. The WRA reports no inundation or river-level warning, and no new slope-alert escalation, transport suspension or major public-service disruption was found.
• East: The rain watches for Datong and Nan'ao have ended. Officially listed local areas in Taitung remain under yellow wind watch. The two Lanyu flight cancellations remain under transport watch, while Wanli Creek remains under monitoring. No new official road, bridge, school, shelter, water or power change was found for other covered eastern Indigenous areas.

No debris-flow or large-scale-landslide red/yellow escalation, resident evacuation, shelter opening, school-level closure, major agricultural loss or new major Indigenous-area public-service disruption was found. At 20:11 on September 15, the DGPA reported no work or class suspensions.

Recommended action: In Alishan, Taoyuan, Namasia and Maolin, stay away from streams, riverbeds and unstable slopes. Leave the officially listed downstream riverbeds for all three reservoir-release reds immediately. Secure outdoor objects in yellow wind zones. Lanyu passengers should confirm flight status with the airline. Highway 7 at Daman remains closed. Official real-time notices govern.

23:44 update

Information time: September 15, 2026, 23:44.

Official sources: Central Weather Administration lifting of the heavy-rain advisory, CWA land strong-wind advisory, Water Resources Agency combined warnings, WRA reservoir-release warnings, Public Warning Platform, Forestry and Nature Conservation Agency barrier-lake monitoring, Agency of Rural Development and Soil and Water Conservation slope-hazard alerts, Directorate General of Highways Highway 7 Daman notice, Taitung Airport daily flights, and Directorate-General of Personnel Administration.

Affected Indigenous areas and levels:

• Alishan, Chiayi; Taoyuan, Namasia and Maolin, Kaohsiung: At 22:45, the CWA lifted the heavy-rain advisory. All four areas returned from weather / watch / yellow to weather / monitoring. This ends a yellow watch and is not the lifting of a red alert. Mountain travel should still account for local rain and slope conditions.
• Baoshan Second, Dapu and Hushan reservoirs: At 23:44, the WRA live page continued to list all three as releasing water under level-one red warnings. Red is confined to officially listed downstream riverbeds and impact areas along Shijing Creek, Emei Creek and the Beigang River. It does not apply to Jianshi, Wufeng, Heping, Ren'ai, Xinyi, Alishan or another unlisted Indigenous area, and does not mean an entire county or township is red.
• Land strong wind: The CWA's 22:23 update keeps officially listed local areas in Taoyuan, Hsinchu County, Miaoli, Taichung, Chiayi County, Tainan, Pingtung and Taitung, including Lanyu and Green Island, under weather / watch / yellow through the evening of September 16. This is not red, and county-level lights must not be automatically applied to unlisted mountain Indigenous areas.
• Taitung–Lanyu air service: Taitung Airport's 20:00 full daily board still lists Lanyu-bound flights 7501 and 7507 as cancelled, while flight 7511 departed normally. The service remains transport / watch; this is not a route-wide suspension or red alert.
• Water conditions and existing status: The WRA reports no inundation or river-level warning. The forestry page shows zero barrier lakes under warning and three under monitoring, so Wanli Creek remains barrier-lake / monitoring. Highway 7 at Daman, Fuxing, remains closed because of a slope failure under transport / watch.

Nationwide assessment:

• North: There is no active heavy-rain advisory. The Fuxing road closure continues. Officially listed local areas in Taoyuan, Hsinchu County and Miaoli remain under yellow wind watch. Baoshan Second and Dapu reservoir-release reds are limited to listed downstream riverbeds, not Jianshi or Wufeng. No new level-one inundation warning, slope-alert escalation, evacuation, shelter, school closure or utility disruption was found for other covered northern Indigenous areas.
• Central: Alishan's yellow rain watch has ended. Officially listed local areas in Taichung and Chiayi County remain under yellow wind watch. The Hushan release red is limited to listed Beigang River downstream areas, not Heping, Ren'ai, Xinyi or Alishan. No new Indigenous-area road or bridge disruption, evacuation, shelter or public-service change was found.
• South: The yellow rain watches for Taoyuan, Namasia and Maolin have ended. Officially listed local areas in Tainan and Pingtung remain under yellow wind watch, not red. The WRA reports no inundation or river-level warning, and no new slope-alert escalation, transport suspension or major public-service disruption was found.
• East: Datong and Nan'ao have no active heavy-rain advisory. Officially listed local areas in Taitung, including Lanyu, remain under yellow wind watch. The two Lanyu flight cancellations remain under transport watch, while Wanli Creek remains under monitoring. No new official road, bridge, school, shelter, water or power change was found for other covered eastern Indigenous areas.

No severe-thunderstorm alert, level-one inundation warning, debris-flow or large-scale-landslide red/yellow escalation, resident evacuation, shelter opening, school-level closure, major agricultural loss or new major Indigenous-area public-service disruption was found. At 23:16 on September 15, the DGPA reported no work or class suspensions.

Recommended action: Although the heavy-rain advisory has ended, mountain travelers should continue to watch local rainfall. Leave the officially listed downstream riverbeds for all three reservoir-release reds immediately. Secure outdoor objects and watch for transport delays in yellow wind zones. Lanyu passengers should confirm flight status with the airline. Highway 7 at Daman remains closed. Official real-time notices govern.