14 of the Deadliest and Most Powerful Earthquakes in History
Originally published: November 2016
Updated: June 2026
Earthquakes are among the most destructive natural disasters on Earth. In a matter of seconds, powerful ground movement can collapse buildings, trigger landslides, generate tsunamis, and disrupt entire cities.
But the most powerful earthquake is not necessarily the deadliest.
Scientists measure earthquake size using magnitude, while the human impact depends on several other factors, including population density, building standards, depth of the earthquake, distance from cities and whether the event produces a tsunami or fire.
The 1960 Valdivia earthquake in Chile remains the largest earthquake ever measured by modern instruments, with a magnitude of 9.5. By contrast, the 1556 Shaanxi earthquake in China was smaller but is widely considered the deadliest earthquake in recorded history.
Here are 14 of the most powerful and devastating earthquakes ever recorded.
1. Valdivia Earthquake, Chile, 22 May 1960
Magnitude: 9.5
The Great Chilean Earthquake, also known as the Valdivia earthquake, remains the strongest earthquake ever recorded by seismic instruments.
It struck southern Chile on 22 May 1960 and caused widespread destruction across cities and rural communities. The earthquake also produced a major Pacific-wide tsunami that reached Hawaii, Japan, the Philippines and other distant coastlines.
Although estimates vary, several thousand people were killed or left missing, and millions were displaced or affected.
The earthquake released an extraordinary amount of energy and remains the standard against which other major earthquakes are compared.
2. Sumatra-Andaman Earthquake and Indian Ocean Tsunami, 26 December 2004
Magnitude: 9.1
On 26 December 2004, a massive undersea earthquake occurred off the coast of northern Sumatra, Indonesia.
The sudden movement of the seafloor generated enormous tsunami waves that struck Indonesia, Sri Lanka, India, Thailand and several other countries around the Indian Ocean. Waves were also recorded as far away as eastern Africa.
Approximately 228,000 to 230,000 people were killed or listed as missing, making it the deadliest tsunami disaster in recorded history. More than one million people were displaced.
The disaster exposed the lack of an effective regional tsunami-warning system at the time and led to major improvements in tsunami monitoring and public-warning systems.
3. Tōhoku Earthquake and Tsunami, Japan, 11 March 2011
Magnitude: 9.1
The Great East Japan Earthquake struck off the northeastern coast of Honshu on 11 March 2011.
It was the most powerful earthquake ever recorded in Japan and one of the strongest measured anywhere in the world. The earthquake generated a devastating tsunami that overwhelmed coastal defences and destroyed communities across the Tōhoku region.
More than 15,000 people were killed, while thousands were injured or reported missing. The tsunami also caused a major nuclear accident at the Fukushima Daiichi Nuclear Power Station.
The disaster demonstrated that even countries with strong building codes and advanced warning systems can face catastrophic consequences from very large earthquakes and tsunamis.
4. Shaanxi Earthquake, China, 23 January 1556
Estimated magnitude: about 8.0
The Shaanxi earthquake is widely regarded as the deadliest earthquake in recorded history.
It struck during the Ming dynasty and affected Shaanxi, Shanxi, Henan and several other areas of central China. Historical accounts estimate that approximately 830,000 people died.
One major reason for the enormous death toll was the collapse of yaodong homes, which were cave-like dwellings carved into the soft loess cliffs of the region. During the earthquake, cliffs collapsed, landslides buried settlements, and large numbers of homes were destroyed.
Because the earthquake occurred centuries before modern seismology, its magnitude and death toll are historical estimates rather than precise measurements.
5. Tangshan Earthquake, China, 28 July 1976
Magnitude: approximately 7.6
The Tangshan earthquake struck the industrial city of Tangshan in Hebei province shortly before 4:00 a.m.
The city was heavily populated, and many people were asleep when buildings began to collapse. A large proportion of Tangshan’s homes, factories, roads and public infrastructure were destroyed or made unusable.
China’s official death toll was approximately 242,000, although some historical estimates are higher. It remains one of the deadliest earthquakes of the modern era.
The disaster showed that magnitude alone does not determine how deadly an earthquake becomes. The timing of the event, vulnerable buildings, and the concentration of people in the affected area contributed greatly to the loss of life.
6. Haiti Earthquake, 12 January 2010
Magnitude: 7.0
The 2010 Haiti earthquake struck close to the capital, Port-au-Prince, and caused catastrophic damage.
Government buildings, hospitals, schools, homes and essential infrastructure collapsed. More than one million people were displaced, and hundreds of thousands were injured.
Death-toll estimates remain disputed. Haiti’s official figure exceeded 300,000, while other assessments produced lower totals. The US Geological Survey describes the event as having caused an estimated 300,000 deaths and damaged nearly half the structures in the area most severely affected.
The scale of destruction was worsened by weak construction, densely populated neighbourhoods and limited emergency-response capacity.
7. Aleppo Earthquake, Syria, 11 October 1138
Estimated magnitude: uncertain
The 1138 Aleppo earthquake is frequently included among the deadliest historical earthquakes.
It affected northern Syria and surrounding settlements at a time when the region contained fortified towns and structures vulnerable to collapse.
A death toll of approximately 230,000 is often associated with the disaster. However, historians have questioned whether this figure combines deaths from several earthquakes that occurred in the region during the same period.
Because the event happened hundreds of years before scientific instruments and systematic disaster records, both its magnitude and casualty estimates should be treated with caution.
8. Damghan Earthquake, Iran, 22 December 856
Estimated magnitude: approximately 7.9 to 8.0
The Damghan earthquake struck an area that is now part of northern Iran.
Historical estimates suggest that up to 200,000 people may have died across Damghan, Qumis, and nearby areas. Settlements and communication routes were severely affected.
Like many ancient disasters, the available information comes from historical accounts written before modern scientific measurement. The estimated magnitude and death toll therefore remain uncertain.
9. Great Kantō Earthquake, Japan, 1 September 1923
Magnitude: approximately 7.9
The Great Kantō earthquake devastated Tokyo, Yokohama and surrounding areas shortly before noon.
The earthquake caused widespread structural collapse, but fires were responsible for much of the destruction. Many families were preparing meals when the shaking began, and broken cooking equipment helped ignite fires across neighbourhoods built largely from wood.
More than 100,000 people were killed or reported missing, and hundreds of thousands of homes were destroyed.
The disaster reshaped Tokyo and influenced the development of modern earthquake preparedness and urban planning in Japan.
10. Messina Earthquake and Tsunami, Italy, 28 December 1908
Magnitude: 7.1
The Messina earthquake struck the Strait of Messina between Sicily and mainland Italy in the early morning.
The shaking severely damaged Messina and Reggio Calabria. A tsunami followed, causing additional deaths and destruction along the coastline.
The US Geological Survey records approximately 72,000 deaths, although some historical estimates are considerably higher. The disaster remains one of the deadliest earthquakes in European history.
Many residents were asleep when their homes collapsed, contributing to the high loss of life.
11. Gulang Earthquake, China, 23 May 1927
Magnitude: approximately 7.6 to 7.9
The original version of this article referred to this event as the Xining earthquake. It is more commonly known as the Gulang earthquake.
It struck Gansu province in northwestern China and caused widespread destruction in Gulang, Wuwei and surrounding communities.
Approximately 40,000 people were killed. Building collapse and landslides contributed significantly to the disaster, while homes, schools and livestock were destroyed across the affected region.
The earthquake was reportedly felt hundreds of kilometres from its epicentre.
12. Sichuan or Wenchuan Earthquake, China, 12 May 2008
Magnitude: 7.9
The Wenchuan earthquake struck Sichuan province on 12 May 2008.
The original article listed the date as 8 May, but the correct date is 12 May.
The earthquake killed approximately 69,000 people, while more than 18,000 were listed as missing. More than 87,000 people were reported dead or missing in total.
Entire towns were damaged, millions of buildings collapsed or were affected, and large numbers of people were displaced. The earthquake also triggered extensive landslides and created dangerous lakes when rivers became blocked by debris.
The collapse of schools became one of the most widely discussed aspects of the disaster.
13. Gorkha Earthquake, Nepal, 25 April 2015
Magnitude: 7.8
The Gorkha earthquake struck central Nepal on 25 April 2015.
Kathmandu and many surrounding towns and villages experienced severe damage. Historic buildings collapsed, mountain settlements were cut off, and landslides blocked roads.
The earthquake and its aftershocks caused close to 9,000 deaths and injured more than 21,000 people. It also triggered an avalanche on Mount Everest.
Damage assessments found that many traditional stone and brick buildings lacked adequate earthquake-resistant design. This highlighted the importance of enforcing safer construction standards.
14. Central Italy Earthquake, 24 August 2016
Magnitude: 6.2
A magnitude 6.2 earthquake struck central Italy in the early hours of 24 August 2016.
The communities of Amatrice, Accumoli and Arquata del Tronto were among the worst affected. Historic stone buildings collapsed, roads were damaged, and rescue teams faced difficulty reaching some areas.
Approximately 300 people were killed, hundreds were injured, and thousands were temporarily displaced.
Although it was much smaller than the Valdivia, Sumatra and Tōhoku earthquakes, its shallow depth and proximity to vulnerable communities made it highly destructive.
Which Was the Most Powerful Earthquake Ever Recorded?
The most powerful earthquake ever measured was the 1960 Valdivia earthquake in Chile, with a magnitude of 9.5.
Which Was the Deadliest Earthquake in History?
The 1556 Shaanxi earthquake in China is widely considered the deadliest, with an estimated 830,000 deaths.
However, the figure is based on historical records and cannot be verified with the precision available for modern disasters.
Why Can a Smaller Earthquake Cause More Deaths?
A lower-magnitude earthquake can be more destructive than a larger one when it:
occurs close to a densely populated city
has a shallow hypocentre
strikes an area with weak or poorly constructed buildings
happens while people are indoors or asleep
triggers landslides, fires or a tsunami
damages roads, hospitals and communication systems
overwhelms local emergency services
Magnitude measures the amount of energy released by an earthquake. It does not directly measure the number of people killed or the amount of damage caused.
Can Scientists Predict Earthquakes?
Scientists can identify earthquake-prone regions and estimate the probability of future earthquakes, but they cannot reliably predict the exact date, time, location and magnitude of a major earthquake.
Modern systems can sometimes provide a few seconds of early warning after an earthquake begins. These alerts may allow trains to slow down, machinery to shut off, and people to take protective action.
Basic Earthquake Safety Tips
During strong shaking:
Drop to the ground.
Take cover under a strong table or desk.
Protect your head and neck.
Hold on until the shaking stops.
Stay away from windows and objects that may fall.
Do not use lifts.
Move away from buildings, power lines, and damaged structures once it is safe.
In coastal areas, move to higher ground after prolonged or powerful shaking because a tsunami may follow.
Frequently Asked Questions
What is the difference between earthquake magnitude and intensity?
Magnitude measures the energy released at the earthquake’s source. Intensity describes how strongly the earthquake is felt and how much damage it causes in a particular location.
Is a magnitude 9 earthquake ten times stronger than a magnitude 8?
The magnitude scale is logarithmic. An increase of one whole magnitude represents about ten times greater measured wave amplitude and roughly 32 times more energy release.
Where do most major earthquakes happen?
Many powerful earthquakes occur around the Pacific Ring of Fire, where several tectonic plates meet. Other earthquake-prone areas include the Himalayan region, the Mediterranean and parts of the Middle East.
Can an earthquake cause a tsunami?
Yes. Large undersea earthquakes can suddenly move the seafloor and displace enormous quantities of water, generating tsunami waves.
What was the strongest earthquake in Africa?
Africa experiences fewer very large earthquakes than regions around the Pacific Ring of Fire, but damaging earthquakes have occurred in North Africa and along the East African Rift.
Final Thoughts
The world’s most devastating earthquakes show that natural hazards become disasters when they strike exposed and vulnerable communities.
Safer buildings, effective emergency planning, public education, tsunami-warning systems and rapid rescue services can greatly reduce deaths.
Earthquakes cannot yet be precisely predicted, but countries and communities can prepare for them.
Author: Adeyinka Joseph Alonge is a public health professional, researcher and writer with interests spanning health, science, technology, personal development and practical knowledge for everyday life.
No comments:
Post a Comment