PARIS, Jan 11 (Reuters) - Authorities will put the French overseas territory of Mayotte on red alert late on Saturday, Overseas Minister Manuel Valls said, as a tropical storm nears the Indian Ocean archipelago that was devastated by a cyclone last month. Volcaholic 🌋 Earthquake Alert on Telegram by @EarthquakeAlertTelegram A @grttme project - Other backups: @Hallotme