Beijing city centre sits 2.4 km from Zhongnanhai, Beijing, the most plausible strategic target in the area (high targeting confidence). Modelled strike: 455 kt airburst.
Estimated survival chance at city centre: 2% · Estimated metro fatalities: 1.1M, injuries: 1.3M
What a strike on Zhongnanhai, Beijing would mean
A 455 kt detonation produces a fireball 763 m across in radius. Reinforced concrete fails out to 2.6 km (20 psi). Most residential buildings collapse within 5.3 km (5 psi), and windows shatter dangerously out to 11.9 km (1 psi). Anyone in line of sight within 8.2 km suffers third-degree burns from the thermal pulse.
An airburst maximises blast damage but produces minimal local fallout, so for Beijing the dominant risks are blast and thermal effects rather than radiation.
Most plausible targets near Beijing
| Target | Type | Distance | Assumed yield | Confidence |
|---|---|---|---|---|
| Zhongnanhai, Beijing | government | 2 km | 455 kt | high |
| Dalian naval base | military | 461 km | 300 kt | high |
| Qingdao naval base | military | 551 km | 300 kt | medium |
| Luoyang missile base | military | 688 km | 300 kt | medium |
| Yongbyon Nuclear, DPRK | energy | 798 km | 150 kt | high |
Key blast radii (455 kt airburst)
| Effect | Radius | What happens |
|---|---|---|
| Fireball | 763 m | Complete vaporisation |
| 20 psi blast | 2.6 km | Hardened structures destroyed, ~100% fatalities |
| 5 psi blast | 5.3 km | Most buildings collapse, widespread fatalities |
| 3rd-degree burns | 8.2 km | Full-thickness burns to exposed skin |
| 500 rem radiation | 2.6 km | Lethal dose without medical care |
| 1 psi blast | 11.9 km | Window breakage, light damage, glass injuries |
How Beijing can prepare
With a population density of 1,300 people/km², Beijing's outcome would hinge on the first hour. The guidance is identical everywhere: get inside, stay inside, stay tuned. A basement or the core of a large concrete building cuts fallout exposure by a factor of 10 or more, and radiation decays fast — dose rates fall ~90% within the first 7 hours and ~99% within two days.
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