Earthquake Alert: M5.2 Event Detected in Iran

A seismic event measuring magnitude 5.2 has been recorded by global monitoring networks, with the epicentre located 27 km S of Javānrūd, Iran. The earthquake occurred at 03:48 UTC on Monday, July 20, 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.

Iran sits on the Iranian Plateau, caught between the Arabian Plate pushing northward and the Eurasian Plate. This compression is accommodated along a complex network of reverse and strike-slip faults crossing the entire country.

Event Parameters in Detail

Magnitude: 5.2 (moment magnitude scale, Mw) — a moderate earthquake.
Depth: 10.0 km
Location: 27 km S of Javānrūd, Iran
Time: 03:48 UTC on Monday, July 20, 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 5.2 earthquake releases approximately approximately 30,000 tonnes of TNT — comparable to the Hiroshima atomic bomb 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

Iran has experienced many catastrophic earthquakes, including the 2003 Bam earthquake (M6.6, ~26,000 deaths) — largely caused by collapse of traditional mud-brick architecture — and the 2012 East Azerbaijan earthquakes. Seismicity is widespread, with few regions of the country considered truly low-risk.

Public Safety Guidance

For residents in the affected area, the immediate priority is assessing personal safety and structural integrity. Agree on an out-of-area contact that family members can reach if local communications are disrupted. Identify two meeting points: one near your home and one further away. Practise earthquake drills, especially with children and elderly household members.

If you are on or near a coast and experience strong or prolonged earthquake shaking, treat it as a potential tsunami warning and move immediately to high ground. Do not wait for an official alert — natural warning signs (severe shaking, unusual sea withdrawal) are your first alert.

The Institute of Geophysics, University of Tehran and the Building and Housing Research Center (BHRC) play key roles in earthquake monitoring and building code development.

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.

How QuakeWatch Tracks This Event

QuakeWatch sources earthquake data directly from the USGS ComCat (Comprehensive Catalog), which aggregates data contributed by seismic networks worldwide including JMA (Japan), EMSC (Europe and Mediterranean), GFZ (Germany and global), Geoscience Australia, and dozens of national and regional networks. This data is refreshed every 60 seconds, ensuring that new earthquakes appear on our live map within minutes of being processed by the USGS. You can also submit a felt report for this earthquake directly on its detail page.