InternationalThursday, 27 August 2026·The Hindu - International
USGS says Nepal flood was caused by glacial collapse, not earthquake; 5.2 seismic event noted
The USGS said the Nepal-Tibet disaster was triggered by a glacial collapse and debris flow, after a 5.2 seismic event was initially reported as an earthquake.
Key highlights
Direct fact
On August 27, 2026, the U.S. Geological Survey said the Nepal-Tibet disaster was caused by a glacial collapse and debris flow, after a magnitude 5.2 seismic event near the Nepal-China border at 8:37 a.m. local time was first reported as an earthquake.
Key specifics
- USGS issued its clarification on Thursday, August 27, 2026.
- The seismic event was recorded near the Nepal-China border at 8:37 a.m. local time on August 26.
- USGS said the event had a magnitude of 5.2, not 4.4 as first reported.
- The agency concluded that no earthquake had occurred after satellite imagery and seismic analysis.
- At least 160 people were killed in the downstream Nepal-Tibet flood disaster.
Exam lens
Question type: International science-current affairs, disaster causation, geography; key facts: USGS, August 27 2026, magnitude 5.2, 8:37 a.m., Nepal-China border, glacial collapse. TNPSC may ask which agency revised the cause and what natural process triggered the flood.