Methods/Tornado Missile Strike Calculator
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Tornado Missile Strike Calculator (TMSC)
The Tornado Missile Strike Calculator is an EPRI-developed tool that computes the conditional probability of wind-borne missile impact on structures at nuclear power plant sites. TMSC uses Monte Carlo simulation to model missile injection, flight trajectories, and target intersection for both tornado and straight-wind events. The primary output — conditional multiple missile hit probability — feeds directly into the plant response model of a high-wind probabilistic risk assessment.
MORE INFO COMING SOON — This page is under active development. Detailed content will be available in an upcoming update to the External Hazards Knowledge System.
Return to Methods and Tools. | EPRI technical point of contact: Chris Rochon (CRochon@epri.com)
Date last reviewed: 2026-05-07