If you are not yet a WeatherSentry user, please contact us on dtn.com. The WeatherSentry® app provides full awareness to current and changing weather conditions with alerts for your GPS position and fixed locations; real-time lightning display and alerts; severe weather storm tracks – thunderstorms, tornadoes and hurricanes; radar and future radar; multiple map layers and weather variables; hour-by-hour plus 15-day forecasts, and more! Please note: Allow Location Services when installing. Background location tracking is necessary for receiving location-based alerts, but does have a nominal effect on battery life.