Thunderstorms are one of the most hazardous weather phenomena that forecasters monitor and assess. The National Weather Service (NWS) has developed the INSITE tool (INtegrated Support for Impacted air-Traffic Environments) to improve NWS convective impact forecasts by providing more precise convective impact areas in aviation forecast products. These improved forecast products can reduce delays in air-traffic and increase efficiency in the National Airspace System (NAS).
INSITE is currently (as of May 2017) located at https://esrl.noaa.gov/fiqas/tech/impact/insite. In the future it will likely move to another location.