The NCSU/APHIS Plant Pest Forecast System (NAPPFAST) is an internet tool for plant pest modeling using georeferenced climatological weather data. The system is the product of a joint venture between the Animal and Plant Health Inspection Service (APHIS), North Carolina State University (NCSU) and the information technology company ZedX, Inc. The NAPPFAST system was initiated in 2002 based on a ‘fill-in-the-blanks’ modeling concept developed by Dr. Jack Bailey. The NAPPFAST System is designed to support the predictive pest mapping needs of the Cooperative Agricultural Pest Survey (CAPS) program and the risk assessment activities of the Plant Epidemiology and Risk Assessment Laboratory (PERAL) and is funded by Emergency and Domestic Programs (EDP). NAPPFAST uses “fill in the blank” templates to simplify modeling and mapping of biological events such as the phenological development of insects and the infection periods of plant pathogens. NAPPFAST additionally uses a multi-purpose modeling tool that contains general equations that can be linked to global weather and climate variables.