This session will focus on applications of uncrewed vehicles such as UAS in improving observations for extreme weather forecasts and climate research observations. Topics may include the use of UAS for observations in or leading up to severe weather, sensor integration and calibration/validation, use of data from unscrewed observing systems to improve numerical weather and climatological models, and related topics. Unscrewed systems that can be applied to a wide variety of aviation and aerospace observation research and operational areas are of interest and could include the use of UAS in current research endeavors, as well as the integration of UAS in operations for extreme weather and climate monitoring activities.