The map above simulates a 300-kiloton nuclear airburst over Lagos, Nigeria — 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 16 million people — the rings above are drawn to real scale over their homes.
The marker is on the mainland in Ikeja, the state capital and airport district, rather than on Lagos Island. The 1.9 km zone of total destruction covers Ikeja's government secretariat, Allen Avenue and the Computer Village market; the 4.7 km collapse ring reaches Murtala Muhammed Airport's domestic terminal, Ogba, Maryland and Oregun. Third-degree burns extend to about 7.5 km over Agege, Oshodi, Ojota and the international terminal; the 14.5 km ring of broken windows reaches Mushin, Surulere, Ikorodu Road's whole length and Yaba's northern edge and crosses the lagoon to Lagos Island and Victoria Island.
Lagos is Africa's largest city, around 16 million people, and the mainland districts inside these rings — Mushin, Oshodi, Agege — are among its most crowded. The ground is flat and barely above sea level. Nigeria has no nuclear weapons, nor does any African state since South Africa dismantled its arsenal in 1991; the arsenals article covers that unique case.
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