The main shock is over. In a high-altitude region where most buildings were never engineered for tremors, the aftershock sequence may be the deadliest phase.
Nagqu, Tibet, October 23, 2026 — The number of people injured in a magnitude 7 earthquake that struck China’s southwestern region of Tibet has risen to 76, local government authorities said at a press conference on Friday, while the death toll remained unchanged at 16.
Where and how strong
The quake’s epicentre lay in Nagqu, a high-altitude city in northern Tibet and a sparsely populated part of the region. The USGS placed it about 183km east-northeast of Nagqu city, with international monitoring agencies reporting a shallow focus of around 10km — a combination of magnitude and shallowness that makes for violent shaking close to the fault. Tremors were reported as far as roughly 400km from Lhasa.
It is the strongest earthquake to hit China since January 2024.
The aftershock danger
Officials used Friday’s briefing to warn about the phase now underway rather than the one that passed. Homes that developed cracks or began leaning during the main shock may collapse during aftershocks, they said, even as communications and power supplies are gradually being restored.
The China Earthquake Networks Center said 413 aftershocks had been recorded — a count that keeps climbing and explains why relocation, not return, remains the operational priority.
The response
More than 300 police officers, including traffic and community police, were sent to the epicentre for rescue and emergency relief, the Nagqu police department said in a post on messaging app WeChat. Officers inspected damage to homes and helped residents relocate to safer locations. A police video posted on Douyin, TikTok’s Chinese sister app, showed officers loading supplies into a truck in darkness and inspecting a damaged building and rubble by flashlight.
More than 12,000 people have been safely relocated, state news agency Xinhua reported. Earlier official media footage showed residents leaving their homes and sheltering outdoors or in cars parked in the street. One resident described being woken by the violent shaking and hearing the house squeak during the tremor. Hundreds of homes were reported collapsed or damaged, with at least 339 collapses cited by official media.
Why a sparse region is not a safe region
Nagqu’s emptiness lowers the likely toll, but it removes almost every advantage that usually limits earthquake deaths. Population is dispersed across vast rangeland, so reaching villages takes hours, not minutes. Construction in the area frequently relies on unreinforced masonry and stone, which performs badly in shaking and is precisely the type of structure that survives the main shock only to fail in aftershocks. And the season matters: October on the Tibetan Plateau brings sub-zero nights, so a 12,000-person displacement is a shelter and heating problem as much as a rescue one.
The historical comparator is instructive rather than predictive. In 2010, a magnitude 7.1 tremor struck Yushu in neighbouring Qinghai province, killing at least 2,698 people and leaving nearly 300 missing — a similar magnitude, on the same plateau, striking a far more densely settled town. Nagqu’s lower death count reflects the absence of people nearby at least as much as the strength of the response.
What to watch
Three indicators over the next 48 hours: whether the aftershock sequence decays or produces another large event, whether the casualty figures rise as remote settlements are reached, and whether shelter, heating and medical supplies arrive before cold exposure becomes the leading cause of harm. In high-altitude autumn quakes, the second wave of loss is rarely seismic.
Discover more from LN247
Subscribe to get the latest posts sent to your email.
