Rasuwa / Bhotekoshi–Trishuli Flood 2026
Operational monitoring paused · Standby
Final scheduled situation brief before NESRA FloodWatch moves to event-driven standby. This is an institutional monitoring decision—not a declaration that the disaster, Government-led search and rescue, recovery work, or missing-person cases have ended.
Executive summary
The Ministry of Foreign Affairs’ 11 September briefing described day-17 search and rescue by national and international teams. It reported 1,385 recovered bodies, approximately 5,130 people missing—including about 600 foreign nationals—and 13,676 people rescued, including more than 320 foreign nationals. These are Government briefing figures and are not independently verified by NESRA.
A Government portal update at 23:31 on 11 September said a 1,050 m access track had reached the Chilime tunnel mouth and heavy equipment had arrived, with breakthrough expected on 12 or 13 September. No authoritative outcome confirmation was identified by the final scheduled cutoff. DHM’s 12 September forecast retained heavy-rain and associated flood, debris-flow, landslide and transport-disruption risk.
Why scheduled monitoring is pausing
The evidence did not establish operational closure. NESRA is pausing the scheduled publication rhythm because the open-source stream has shifted from rapid-changing flood intelligence to event-driven developments best handled through a standby trigger protocol.
Briefs #01–#07 remain immutable historical products. Brief #08 records this transition.
Reactivation triggers
- Authoritative confirmation of a material tunnel access, rescue or recovery outcome.
- A major, timestamp-reconciled revision to Government figures.
- New emergency satellite activation, delivery or material EO analysis.
- DHM warning escalation or a new corridor flood/landslide event.
- A Government, humanitarian or partner request for renewed NESRA support.
Authoritative operational picture at cutoff
Headline figures use the MOFA briefing because it has a stated date and coherent national/international scope. Live Government portal counters have different scopes and no single reconciled timestamp, so they are not substituted into the headline.
NESRA Rapid EO v1 — unchanged analytical baseline
| Element | Frozen value | Interpretation |
|---|---|---|
| Imagery | Sentinel-2 · 27 Aug 2026 | Cloud-limited rapid exposure screening |
| Buildings | 3,216 exposed | Exposure is not verified damage |
| Major roads | 11.5 km exposed | Exposure is not verified damage |
| Bridges | 62 exposed | Exposure is not verified damage |
| Solid cloud | Approx. 4.1 km² | Limits observation and confidence |
| Analyst credit | Michael Hylind | Retained from released product |
Satellite tasking context
Copernicus EMSR927 remained open with six areas of interest and eight records: six finished and two waiting. Latest recorded delivery: 7 September; newest imagery: 5 September. The International Charter activation listed 34 products. These describe tasking/product status, not incident closure.
Confidence and limitations
- Government figures may be revised or use different scopes.
- No authoritative tunnel or SAR-transition outcome was identified at cutoff.
- Cloud and spatial resolution limit optical EO interpretation.
- NESRA has not independently verified casualties, rescue outcomes or asset damage.
Downloads and official sources
नेपाली सारांश
१२ सेप्टेम्बर २०२६, १४:५० NPT सम्म उपलब्ध आधिकारिक सूचनाअनुसार परराष्ट्र मन्त्रालयको ११ सेप्टेम्बर ब्रिफिङले राष्ट्रिय तथा अन्तर्राष्ट्रिय टोलीद्वारा खोज तथा उद्धार जारी रहेको जनाएको छ। १,३८५ शव फेला परेको, करिब ५,१३० जना बेपत्ता—करिब ६०० विदेशी नागरिकसहित—र १३,६७६ जनाको उद्धार भएको—३२० भन्दा बढी विदेशी नागरिकसहित—उल्लेख छ। यी सरकारी विवरण हुन्; NESRA ले स्वतन्त्र रूपमा पुष्टि गरेको होइन।
सरकारी पोर्टलले १,०५० मिटर पहुँच ट्र्याक चिलिमे सुरुङको मुखसम्म पुगेको र भारी उपकरण आइपुगेको जनाएको थियो। १२ वा १३ सेप्टेम्बरमा खोलिने अपेक्षा भए पनि अन्तिम कटअफसम्म परिणामको आधिकारिक पुष्टि भेटिएन। DHM को १२ सेप्टेम्बर पूर्वानुमानले भारी वर्षा र बाढी, पहिरो तथा यातायात अवरोधको जोखिम कायम राखेको थियो।
NESRA को स्थिति
Operational monitoring paused · Standby
अब नियमित समयतालिकामा नयाँ ब्रिफ प्रकाशन गरिने छैन। महत्वपूर्ण आधिकारिक घटना, नयाँ उपग्रह उत्पादन, DHM जोखिम चेतावनी वा साझेदारको अनुरोध आएमा अनुगमन पुनःसक्रिय हुनेछ।
EO विश्लेषण
२७ अगस्ट २०२६ को Sentinel-2 मा आधारित Rapid EO v1 अपरिवर्तित छ: ३,२१६ भवन, ११.५ किमि मुख्य सडक र ६२ पुल exposure; करिब ४.१ किमि² ठोस बादल। Exposure भनेको पुष्टि भएको क्षति होइन। विश्लेषक श्रेय: Michael Hylind.
Prepared by the Nepalese Space Research Association (NESRA). Final scheduled cutoff: 12 September 2026, 14:50 NPT.