Reply: Comparison of slope instability screening tools following a large storm event and application to forest management and policy

A large storm event in southwest Washington State triggered over 2500 landslides and provided an opportunity to assess two slope stability screening tools. The statistical analysis conducted demonstrated that both screening tools are effective at predicting where landslides were likely to take place (Whittaker and McShane, 2012). Here we reply to two discussions of this article related to the development of the slope stability screening tools and the accuracy and scale of the spatial data used. Neither of the discussions address our statistical analysis or results. We provide greater detail on our sampling criteria and also elaborate on the policy and management implications of our findings and how they complement those of a separate investigation of landslides resulting from the same storm. The conclusions made in Whittaker and McShane (2012) stand as originally published unless future analysis indicates otherwise.

► We reply to discussions of screening tool development and the spatial data used.
► Neither of the discussions address our statistical analysis or results.
► We elaborate on our sampling criteria and policy and management implications.
► Our conclusions stand as published unless future analysis indicates otherwise.