High fidelity prediction of electromagnetic wave propagation from surface ships can help the Surface Navy by supporting radar, electronic warfare, and communications system operations. IAI, and its collaborators from Johns Hopkins University and the National Center for Atmospheric Research (NCAR), will develop a portable, high fidelity EM Propagation mOdeling software using accelerated Weather prEdiction for Radar (EMPOWER). This technology is based on advances in computational chipsets such as Many-Integrated Cores (MIC) and Graphical Processing Units (GPUs). Previously underlying computations for propagation modeling and weather prediction were too complex and would require long computation times, or multiple machines networked together for faster computations. The benefits of propagation modeling and high fidelity Numerical Weather Prediction (NWP) tools like Weather Research Forecasting (WRF) and Coupled Ocean/Atmosphere Mesoscale Prediction System (COAMPS), will be brought shipboard by optimizing current software codes, and accelerating execution by using advanced computing chipsets. The keys elements within EMPOWER are the NWP tools, physics to EM transformation, and propagation modeling. The key challenge is choosing the appropriate platform(s) and efficiently balancing code optimizations. Platforms based on Many Integrated Core (MIC) architecture can run trillions of calculations per second and can use existing programming tools like C/C++/Fortran. Graphics Processing Units (GPUs) can quickly compute the intensive parts of the code and send the remainder to a standard central processing unit (CPU). The optimization and acceleration benefits of EMPOWER will be demonstrated by testing against a benchmark case that satisfies the Navy's requirements.