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Lagos nuclear blast radius

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Lagos is a coastal megacity with a crowded island core. A 15 kt airburst here is severe on the WorldPop grid and still small against the whole urban region stretching north and west.

Open Lagos in the 3D simulator

Educational estimate only. Blast and heat rings use simplified yield scaling. They ignore terrain, weather, shielding, and weapon design. Casualty counts use WorldPop 2020 residents on an approximately 1 km grid and ignore time of day, commuting, shelter, and evacuation. This is not a targeting or civil-defense tool. About the model.

Aim point: Lagos Island / central Lagos · Weapon: Little Boy (15 kt, 543 m (1,780 ft) optimum airburst)

Ground ranges for Little Boy (15 kt, 543 m (1,780 ft) optimum airburst) in this simulator.
Effect Ground range What the model means
Fireball 266 m (872 ft) Maximum luminous radius
20 psi 839 m (2,751 ft) Heavy destruction
5 psi 1.8 km (1.1 mi) Most buildings collapse
Thermal 2.0 km (1.3 mi) 3rd-degree burns
1 psi 4.2 km (2.6 mi) Windows shatter
Rings scaled to 1 psi. Yellow fireball, red 20 psi, orange 5 psi, gold thermal, blue 1 psi. Not a map of buildings.

Casualty estimate at this pin

People on the WorldPop 2020 grid inside this scenario’s 1 psi ring. Rounded educational estimate, not a forecast.
Estimated deaths 160,460
Estimated injuries 389,536
Residents inside 1 psi 1,384,004

What the rings cover

Inner rings sit on Lagos Island and the immediate shore. 5 psi covers a large share of the island core. 1 psi can reach nearby mainland waterfront and still leave most of the metropolitan region outside window-breakage.

The preset sits on Lagos Island rather than on a mainland centroid. That is the named, historic commercial core and a densely inhabited grid.

Lagos’s growth is famous for overflowing any one map. These rings will not cover Ikeja, the mainland sprawl, or the whole lagoon system. They will produce a high casualty line because the island and near shore are packed.

This page is not a West Africa targeting study. It exists so a Hiroshima-scale yield has a stable Lagos URL next to Dhaka, Mumbai, and São Paulo.

Related pages

Dhaka · Cairo · São Paulo · Mumbai

All cities and sites

City index · Historic sites · Weapon yields

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