The map above simulates a 300-kiloton nuclear airburst over Bengaluru, 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 13.6 million people — the rings above are drawn to real scale over their homes.
The marker is in the city centre near Cubbon Park and the Majestic bus and railway stations. The 1.9 km zone of total destruction covers Vidhana Soudha, the High Court, Cubbon Park and the Chickpet market streets; the 4.7 km collapse ring reaches MG Road, Shivajinagar, Malleshwaram's southern end and the City Market. Third-degree burns extend to about 7.5 km over Indiranagar's western edge, Basavanagudi, Rajajinagar and Ulsoor Lake; the 14.5 km ring of broken windows reaches Koramangala, Jayanagar, Yeshwanthpur, HAL's old airport and the IT corridors' inner ends.
Bengaluru has about 13–14 million people and has grown so quickly that most of the 14.5 km ring, once garden suburbs, is now continuously built. The city sits on a plateau at 900 metres; the ground is gently rolling with no significant shadows. It is also the home of India's space and aerospace establishments and a major defence-research centre. See Nuclear arsenals for the regional picture.
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