Alerta SP is a free Android app developed by Polícia Militar do Estado de São Paulo. The app provides information on what to do before, during, and after weather events and natural disasters such as floods, storms, lightning, and hail, among others. It also covers topics like landslide, drowning, power outages, emergency alerts, extreme heat and cold, hazardous products, forest fires, drought, and volunteering.

The app has a user-friendly interface with easy navigation. Users can set up personalized alerts for their location and receive notifications about weather conditions and emergency situations. The app also offers safety tips and guidelines to help users prepare for emergencies and stay safe during critical situations. Overall, Alerta SP is a useful tool for anyone living in or visiting São Paulo who wants to stay informed and prepared for weather events and natural disasters.