This paper discusses the design load cases that are critical for offshore wind turbines installed in hurricane-prone regions on the US Outer Continental Shelf (OCS). Results of a literature review on the research on the design load case for hurricane conditions are first presented in the paper, followed by the models and results of the case studies using the conceptual designs of a monopile, a tripod and a jacket type support. The characteristic structural responses of offshore wind turbines under hurricane conditions are evaluated with the consideration of the dynamic interaction among the turbine rotor-nacelle assembly, support structure and foundation. The correlations between those responses and various design parameters including the turbine operating mode, design environmental condition, site location and support structure configuration are of particular interest. Based on the literature review and the case study results, recommendations are made for the hurricane design load cases.