(AREA) -- The American Red Cross has launched its official Tornado App, putting lifesaving information right in the hands of people who live in, visit or have loved ones in tornado-prone areas. The free app, available in English or Spanish, gives iPhone, iPad and Android smart phone and tablet users instant access to local and real-time information, so they know what to do before, during and after a tornado. The app includes a high-pitched siren and "tornado warning" alert that signals people when a NOAA tornado warning has been issued in their area - even if the app is closed. An "all clear" alert lets users know when a tornado warning has expired or has been cancelled. Other features of the app include location-based NOAA tornado, severe thunderstorm and flood watch and warning alerts, enhanced weather maps, and one-touch "I'm safe" messaging that allows users to broadcast reassurance to family and friends that they are out of harm's way.