Evolution of the dynamic drought index tool

This paper documents the evolution of the Dynamic Drought Index Tool (DDIT) developed by the Carolinas Regional Integrated Sciences and Assessments group. The DDIT is designed to address the needs for drought monitoring demanded by a wide range of stake holders. Its flexible design allows users to select the most appropriate index, and to scale to appropriate time periods and regions. Here we will describe its features, discuss user response and recommendations, and document issues related to scaling from the Carolinas to other states. We will also outline procedures required to move from a research to operational web tool.