Gorkha Earthquake
A magnitude 7.8 earthquake struck central Nepal on 25 April 2015, rupturing the Main Himalayan Thrust between Gorkha and the Kathmandu region. Collapsing buildings, landslides, avalanches, and isolation killed nearly 9,000 people and injured more than 21,000. A magnitude 7.3 aftershock on 12 May brought further deaths, damage, and fear during an already difficult response.
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Background
Suggest an editThe Indian plate continues to push beneath Eurasia, loading the faults that built the Himalaya. Nepal's dense historic settlements, unreinforced masonry, hillside roads, remote villages, cultural monuments, and unevenly enforced building standards created multiple forms of exposure. Scientists had long recognized the regional earthquake hazard, but preparedness and structural retrofit remained incomplete.
What happened
Suggest an editThe mainshock began late in the morning and ruptured eastward beneath central Nepal. Long-period motion shook the Kathmandu Valley while intense movement damaged rural districts nearer the rupture. Buildings and heritage structures collapsed, landslides blocked roads and rivers, and avalanches struck Mount Everest and the Langtang Valley.
Timeline
The magnitude 7.8 mainshock strikes
Rupture beneath central Nepal causes widespread collapse, landslides, and avalanches.
Rescue expands across difficult terrain
Local and international teams work amid blocked roads, damaged communications, and continuing aftershocks.
A magnitude 7.3 aftershock hits
New failures and landslides affect communities east of the mainshock area.
Assessment becomes reconstruction
Nepal documents losses and begins a long program for housing, infrastructure, and cultural heritage.
Aftermath
Suggest an editNeighbors, local responders, the Nepalese military, medical teams, and international assistance searched rubble and delivered shelter, water, food, and care. Mountainous terrain, damaged roads, weather, aftershocks, and the scale of displacement slowed access to remote communities. The 12 May aftershock caused new collapses while many people were still living outdoors.
Long-term consequences
Suggest an editNepal created a national reconstruction program for homes, schools, health facilities, roads, and cultural heritage. Hundreds of thousands of households rebuilt through grants tied to earthquake-resistant techniques, though land tenure, cost, remoteness, and traditional construction complicated recovery. The earthquake generated major advances in Himalayan geodesy, landslide mapping, and seismic-risk planning.
Significance
Suggest an editThe Gorkha earthquake shows that geological hazard becomes a social disaster through construction, access, terrain, poverty, and governance. It also demonstrates why rebuilding houses and protecting living heritage require different but connected forms of expertise.
What remains today
Suggest an editRebuilt homes and monuments stand beside repaired masonry, memorials, altered slopes, abandoned settlements, and mapped landslide scars. Government assessments, household records, satellite imagery, seismic data, and UNESCO documentation preserve the physical and institutional history of recovery.
Uncertainty
Suggest an editOfficial totals changed as remote districts reported losses, and counts vary by whether later deaths or missing people are included. Mainshock parameters have been refined, while research continues on the rupture's depth, eastern limit, landslide inventory, and how much strain remains on neighboring Himalayan fault segments.
References
3 reviewed sources
These reviewed sources support the article. Open the claim notes to see which evidence supports specific statements.
How the sources support this article 4 claims
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Quick read
A magnitude 7.8 earthquake struck central Nepal on 25 April 2015, rupturing the Main Himalayan Thrust between Gorkha and the Kathmandu region.
- Nepal Earthquake 2015 Post Disaster Needs Assessment reviewed Aug 2026
- Restoring cultural heritage after the 2015 Gorkha earthquake reviewed Aug 2026
- M 7.8 Gorkha, Nepal Earthquake reviewed Aug 2026
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Trigger and conditions
The mainshock began late in the morning and ruptured eastward beneath central Nepal.
- Nepal Earthquake 2015 Post Disaster Needs Assessment reviewed Aug 2026
- Restoring cultural heritage after the 2015 Gorkha earthquake reviewed Aug 2026
- M 7.8 Gorkha, Nepal Earthquake reviewed Aug 2026
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Uncertainty
Official totals changed as remote districts reported losses, and counts vary by whether later deaths or missing people are included.
- Nepal Earthquake 2015 Post Disaster Needs Assessment reviewed Aug 2026
- Restoring cultural heritage after the 2015 Gorkha earthquake reviewed Aug 2026
- M 7.8 Gorkha, Nepal Earthquake reviewed Aug 2026
-
Why it matters
The Gorkha earthquake shows that geological hazard becomes a social disaster through construction, access, terrain, poverty, and governance.
- Nepal Earthquake 2015 Post Disaster Needs Assessment reviewed Aug 2026
- Restoring cultural heritage after the 2015 Gorkha earthquake reviewed Aug 2026
- M 7.8 Gorkha, Nepal Earthquake reviewed Aug 2026
-
01
M 7.8 Gorkha, Nepal Earthquake
U.S. Geological Survey
Reviewed earthquake parameters, tectonic setting, rupture context, and regional shaking information for the mainshock. Open original Search archived versions Trace this source → -
02
Nepal Earthquake 2015 Post Disaster Needs Assessment
Government of Nepal
Government-led assessment of casualties, affected districts, sector damage, economic loss, recovery needs, and reconstruction priorities. Open original Search archived versions Trace this source → -
03
Restoring cultural heritage after the 2015 Gorkha earthquake
UNESCO
Ten-year account of heritage damage, conservation decisions, local skills, rebuilding, and remaining recovery work. Open original Search archived versions Trace this source →