Comilla sits in or near Bangladesh’s Chittagong Hill Tracts, the country’s only significantly hilly terrain, where the monsoon season from June through October brings heavy rainfall to steep slopes.
In eastern Bangladesh near the Indian border, the city’s Gumti River can rise quickly when heavy monsoon rain falls in the nearby Tripura hills of India. Unlike the flat delta that covers most of Bangladesh, this hilly terrain is prone to landslides during intense rain, a risk that has caused serious casualties in recent years, and radar helps track the developing storm cells that can trigger these dangerous slope failures. Learn more: Flash Flood Warning Signs on Radar · Open the full Rain Map