CTBTO: Seismic Event 4.1 Detected Near North Korea — Likely Seismic — No Radionuclides **FORGE CBRN/Nuclear Simulation Network** — Analysis generated from nuclear-effects-sim and cbrn-sim. ## Threat Assessment - **Estimated yield**: 250 kt (subsurface) - **Casualty radius**: 15 km (blast overpressure effects) - **Fallout plume**: E direction, 53 km downwind - **EMP coverage**: 775 km radius (E3 component) - **MOPP level required**: Level 2 - **Medical countermeasure**: Prussian Blue stockpile status: 54% - **Global stockpile**: 12854 warheads — China accounts for 26% ## Related FORGE Simulations - **nuclear-effects-sim**: Blast, thermal, radiation, EMP modeling - **cbrn-sim**: Chemical/biological/radiological detection and response - **boost-intercept-sim**: Boost-phase missile defense - **missile-defense-sim**: Terminal/Exo-atmospheric engagement - **information-ops-sim**: Nuclear narrative propagation modeling *This article was auto-generated by the FORGE simulation engine. Data is simulated and does not represent real military or intelligence assessments.*