Share Extreme weather events such as strong thunderstorms, hail or heat waves have increased in Germany in recent years and in some cases cause major economic and infrastructural damage. The complex physical processes that take place when these weather events occur are being investigated by the Helmholtz initiative MOSES, in which the Karlsruhe Institute of Technology (KIT) is also involved. The aim of the measurement campaign “Swabian MOSES”, which is now starting and coordinated by KIT, is to holistically investigate the causes, effects and interactions of hydro-meteorological extremes. In the study area in Baden-Württemberg, both thunderstorms and periods of heat and drought occur frequently.