Moderate Earthquake (M4.7) Reported Near North Indian Ocean

A seismic event measuring magnitude 4.7 has been recorded by global monitoring networks, with the epicentre located North Indian Ocean. The earthquake occurred at 10:53 UTC on Saturday, September 26, 2026 and was detected at a focal depth of 10.0 km.

Seismological Overview

Earthquakes are the result of sudden energy release in Earth's crust, most commonly along fault lines where tectonic plates interact. This energy radiates outward as seismic waves — measured and characterised by networks of seismographs operated by agencies including the USGS, JMA, EMSC, and GFZ.

India's seismic hazard stems primarily from the ongoing collision of the Indian Plate with the Eurasian Plate — a process that built the Himalayas and continues to drive intense seismicity across northern India, Nepal, and the Andaman Islands.

Event Parameters in Detail

Magnitude: 4.7 (moment magnitude scale, Mw) — a moderate earthquake.
Depth: 10.0 km
Location: North Indian Ocean
Time: 10:53 UTC on Saturday, September 26, 2026

At a focal depth of 10.0 km, this is classified as a shallow earthquake (0–70 km). Shallow events are typically the most damaging: the seismic energy has less distance to travel before reaching the surface, resulting in stronger and more abrupt ground shaking at the epicentre.

Energy and Ground Motion

A magnitude 4.7 earthquake releases approximately roughly 500 tonnes of TNT of energy. For comparison, this exceeds the energy released by most conventional explosive events and is sufficient to shift tectonic stress in measurable ways across a wide region.

Moderate earthquakes are felt by virtually everyone near the epicentre. Strong shaking lasting 10–30 seconds can topple unsecured items, crack plaster, and cause poorly anchored objects to fall. Aftershocks are common following moderate events.

Significant damage can occur to vulnerable structures — particularly unreinforced masonry, old adobe buildings, and poorly maintained older construction. Well-engineered modern buildings are designed to withstand this level of shaking with minimal structural impact, though contents may shift and non-structural elements (ceilings, partitions) can be damaged.

Regional Seismic History

Notable Indian earthquakes include the 2001 Bhuj earthquake (M7.7, ~20,000 deaths) in Gujarat and the 2015 Gorkha earthquake centred in Nepal (M7.8, ~9,000 deaths) which was strongly felt across northern India. The densely populated Indo-Gangetic Plain, though not directly on a plate boundary, faces amplified shaking from distant Himalayan earthquakes.

Public Safety Guidance

For residents in the affected area, the immediate priority is assessing personal safety and structural integrity. Keep an earthquake emergency kit accessible at home. It should include at least 72 hours of water (4 litres per person per day), non-perishable food, a first aid kit, torch, battery-powered radio, copies of important documents, and essential medications. Reviewing and restocking this kit annually is strongly recommended.

Fasten heavy furniture — bookshelves, water heaters, cabinets — to walls using earthquake straps. Store breakable items on lower shelves and heavy items closest to the floor. These simple steps significantly reduce the risk of injury from falling objects.

The National Center for Seismology (NCS) under India's Ministry of Earth Sciences monitors seismic activity and maintains a network of ~100 seismograph stations across the country.

Continued Monitoring

The USGS and regional seismic networks will continue to monitor this event for aftershock activity. QuakeWatch aggregates this global data in real time — you can view all current seismic activity on our live map, or explore our earthquake science guides to learn more about the forces behind events like this one.

Building Codes and Earthquake Resilience

One of the most effective tools against earthquake damage is modern building codes that specify how structures must be designed and constructed to withstand seismic forces. Countries with active fault zones have developed increasingly sophisticated seismic design standards over the past 50 years. However, the gap between modern code-compliant buildings and older existing structures remains a critical challenge in earthquake risk reduction worldwide. Building retrofit programmes and public awareness campaigns are key components of any national earthquake preparedness strategy.