Why and how dangerous is the Double Earthquake, which shook Venezuela badly, thousands and lakhs of lives can be lost

Double Earthquake means two powerful earthquakes that shake the same area at an interval of a few seconds, minutes or hours. The two earthquakes of 7.2 and 7.5 magnitude that occurred in Venezuela have once again reminded the world how devastating this double blow of nature can be. When the first shock weakens the buildings and the second collapses them completely, then the devastation increases manifold.

After all, what is a double earthquake, how dangerous is it and where in the world have such incidents happened so far?

Venezuela On June 24, 2026, two powerful earthquakes of magnitude 7.2 and 7.5 shook the entire world. Both tremors occurred at an interval of only 39 seconds, hence geologists are calling it “Doublet Earthquake” or “Twin Earthquake”. The US Geological Survey (USGS) has described it as a rare and extremely dangerous seismic event.

The first blow weakens, the second destroys.

Actually, in a double earthquake, two big earthquakes with almost equal intensity occur in the same area. The first shock weakens buildings, bridges and other structures, while the second shock can completely collapse them. This is the reason that in such cases the loss of life and economic loss is much more than in normal earthquakes.

So far, more than 30 people have been confirmed dead and hundreds injured in Venezuela, while experts have warned that the death toll could reach thousands or more than one lakh. At present, the USGS has expressed the possibility of more than 10,000 deaths.

Why are double earthquakes dangerous?

• The first shock weakens the structure of the buildings.
• The second shock collapses the already damaged buildings.
• The ground keeps shaking for a long time.
• Rescue and relief operations get disrupted.
• The risk of landslides, tsunami and aftershocks increases.
• The extent of the affected area can be much larger than a normal earthquake.
• According to seismologists, about 20% of the world’s major earthquakes (magnitude 7.5 or more) fall into the doublet or multiplet category in some form or the other. This is why events like the one in Venezuela are not considered just an earthquake, but a “double disaster”.

What did USGS warn about Venezuela double earthquake?

The US Geological Survey (USGS) has described the double earthquakes of magnitude 7.2 and 7.5 that occurred in Venezuela as a Severe Seismic Doublet Sequence. According to the USGS, the first earthquake of magnitude 7.2 was actually a foreshock, followed only 39 seconds later by the main earthquake of magnitude 7.5.

USGS said that Red Pager Alert has been issued for both earthquakes, which is considered one of the most serious warnings. According to the agency, incidents of this level usually require relief and rescue operations at the national or international level. According to the USGS preliminary assessment report:

• The probability of death of more than 10,000 people could be around 40%.
• Economic loss could reach billions of dollars.
• There are a large number of weak and non-seismic buildings in the affected area.
• The risk of landslides and powerful aftershocks has also increased.
• USGS also said that both earthquakes occurred at shallow depth (about 10-20 km), due to which the intensity of tremors on the ground reached MMI IX (Violent Shaking) level. In earthquakes of this level, there is a possibility of collapse of buildings and huge loss of life.

10 major double earthquakes of the world

1. Venezuela (2026)

Two earthquakes of magnitude 7.2 and 7.5 occurred at an interval of 39 seconds. Buildings collapsed and there was widespread destruction in many cities including the capital Caracas.

2. Turkey-Syria (2023)

On February 6, 2023, two devastating earthquakes of magnitude 7.8 and 7.7 occurred. It was one of the deadliest doublet incidents in modern history. More than 59,000 people died.

3. Kuril Islands, Russia (2006-07)

Two massive earthquakes of magnitude 8.3 and 8.1 increased the risk of tsunami in the Pacific region. Scientists called it the “Great Earthquake Doublet”.

4. Harnai, Pakistan (1997)

There was a gap of only 19 seconds between the first and second major shock. Continuous earthquakes destroyed many villages.

5. Kahramanmaraş, Turkey (2023)

The technical name of the main Turkey-Syria disaster is “Kahramanmaras Earthquake Doublet”. The second earthquake made rescue operations more difficult.

6. Solomon Islands (1971)

This area is considered famous for doublet earthquakes. Twin earthquakes of equal intensity were recorded here several times.

7. New Hebrides (Vanuatu Region)

Scientists have also recorded many major double earthquakes in this part of the Pacific Ocean.

8. Kuril Subduction Zone (1952)

Frequent large earthquakes increase tsunami and marine hazards.

9. Ahar-Varzegan earthquake of Iran (2012)

Two earthquakes of magnitude 6.4 and 6.2 caused massive devastation in north-western Iran and killed hundreds of people.

10. Double seismic sequence of the Loma Prieta region of California

American scientists studied several “earthquake doublet” events here, which helped understand this theory.