RAIN ALERT SA operates an online rainfall-monitoring and alerting service that analyses radar precipitation data from MeteoSwiss and MeteoFrance for user-defined geographic zones. The service provides near‑real‑time rainfall measurements (updated about every 2.5 minutes), historical data, configurable alarm thresholds and notifications by email, SMS or activation of automation systems, and can be used for flood, landslide and drinking-water monitoring or hydrological studies.