The IMD issued an 'Orange Alert', as continuous rainfall caused landslides across the Nilgiris in Ooty, Coonoor, Kotagiri, Kundah, Gudalur and Pandalur. Nilgiris: Continuous heavy rainfall has triggered landslides along Ooty s hill roads, disrupting traffic and stranding vehicles. Heavy rain in Coonoor and surrounding areas triggered a landslide near Burliar, disrupting traffic.