'Earthquake that could flatten Delhi': Inside the mega thrust waiting to snap

Produced by: Mohsin Shaikh

Tectonic Collision

The Indian and Eurasian plates collide continuously, forcing the Indian plate under Tibet at about 2 meters per century—fueling massive seismic stress beneath the Himalayas.

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Historic Fury

Past megathrust quakes include the 1803 Garhwal (Mw 7.8), 1934 Nepal–Bihar (Mw 8.4), and 1950 Assam–Tibet (Mw 8.6) events, all triggered along the Main Himalayan Thrust.

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Clock Ticking

No magnitude 8+ quake has struck the region in over 70 years. Geological models suggest this delay may indicate a buildup of extreme tectonic energy, setting the stage for a massive release.

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Inevitable Impact

Experts unanimously warn: it’s not “if” but “when.” The next great Himalayan quake could affect up to 300 million people across northern India, Nepal, and adjacent zones.

Capital Threat

Delhi and NCR are near this seismic zone. Located in Seismic Zone IV, the region faces high risk from both local and Himalayan-origin quakes.

Fault Pressure

Delhi-NCR sits atop active faults like the Delhi-Haridwar Ridge and Mahendragarh-Dehradun Fault, making it vulnerable to moderate and major tremors.

Recent Shocks

A 4.4 magnitude quake hit NCR on July 10, 2025, with the epicenter in Haryana’s Jhajjar district. No major damage occurred, but public panic was widespread.

Structural Fragility

Many buildings in Delhi fail to meet modern earthquake codes. High population density, especially in older areas, increases collapse risk during strong tremors.

Disaster Domino

Critical infrastructure—political, economic, and administrative—makes Delhi not just vulnerable physically but strategically. A large quake could paralyze systems nationwide.

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