In my research, I am investigating the mechanisms for damaging wind generation in extreme thunderstorm-wind events, such as derechos. Non-tornadic thunderstorms produce tens of thousands of severe wind reports across the U.S. annually. While the annual number of severe wind reports exceeds that of tornadoes by an order of magnitude, tornadoes have been subject to more research than mesoscale convective systems (MCSs). Prior studies indicate three possible wind generation mechanisms in MCSs, downbursts, rear-inflow jets (RIJs), and mesovortices. An investigation into damaging wind generation in non-tornadic thunderstorms will provide new, potentially life-saving information for both atmospheric sciences, through improved operational forecasts and warnings, and wind engineering, through improved building codes. A two-part, modeling-based study will be used to identify the mechanisms. The Weather Research and Forecasting (WRF) model will be used to simulate five case studies of high-impact thunderstorm-wind events. A case study of the 10 August 2020 derecho illustrated that WRF simulations compare well with operational radar (WSR-88D) observations. Utilizing the WRF simulation results to design the simulations, reduced-complexity, dynamical-model (RCDM) simulations will be run on the Cloud Model 1 to gain an understanding of the wind characteristics of each mechanism.