← Back to Explore
Article CT-00164
Natural disasters

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.

Suggest an edit to this summary
On this page Jump to a section

Background

Suggest an edit

The 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 edit

The 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

11:56 a.m., 25 April

The magnitude 7.8 mainshock strikes

Rupture beneath central Nepal causes widespread collapse, landslides, and avalanches.

25 April onward

Rescue expands across difficult terrain

Local and international teams work amid blocked roads, damaged communications, and continuing aftershocks.

12 May

A magnitude 7.3 aftershock hits

New failures and landslides affect communities east of the mainshock area.

June 2015 onward

Assessment becomes reconstruction

Nepal documents losses and begins a long program for housing, infrastructure, and cultural heritage.

Aftermath

Suggest an edit

Neighbors, 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 edit

Nepal 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 edit

The 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 edit

Rebuilt 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 edit

Official 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
  1. 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.

  2. Trigger and conditions

    The mainshock began late in the morning and ruptured eastward beneath central Nepal.

  3. Uncertainty

    Official totals changed as remote districts reported losses, and counts vary by whether later deaths or missing people are included.

  4. Why it matters

    The Gorkha earthquake shows that geological hazard becomes a social disaster through construction, access, terrain, poverty, and governance.

  1. 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 →
  2. 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 →
  3. 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 →
Keep exploringRandom article