The map above simulates a 300-kiloton nuclear airburst over New Delhi, India — roughly the size of a modern deployed warhead. The coloured rings show the estimated fireball, the zones of heavy, moderate and light blast damage, the reach of the thermal flash and the ionizing-radiation dose. Drag the marker or change the weapon in the full simulator to explore other scenarios.
The metropolitan area is home to about 32.9 million people — the rings above are drawn to real scale over their homes.
The marker is on Rajpath between Connaught Place and India Gate. The 1.9 km zone of total destruction covers the Parliament, Rashtrapati Bhavan, the Secretariat and India Gate — the entire ceremonial core of the capital; the 4.7 km collapse ring reaches Connaught Place, New Delhi railway station, Khan Market and the Lodhi Gardens. Third-degree burns extend to about 7.5 km, over Old Delhi, the Red Fort, Karol Bagh, Nizamuddin and AIIMS; the 14.5 km ring of broken windows covers Delhi University, Lajpat Nagar, the airport's domestic terminal and the Yamuna's eastern bank.
Delhi's National Capital Region is home to more than 30 million people. Lutyens' Delhi at the centre is leafy and low-density, but the burn and blast rings beyond it fall on some of the most crowded neighbourhoods in Asia. India and Pakistan both field weapons in this yield range, which is why the Delhi–Islamabad pair appears so often in the recent detonations; see also Nuclear arsenals.
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