CHENNAI: Heavy rain accompanied by thunder and lightning across Chennai and its suburbs from Saturday late evening to Sunday morning disrupted more than 20 flight services at Chennai airport, leaving passengers stranded and causing delays and diversions. An IndiGo flight carrying 184 passengers from Kolkata was diverted to Hyderabad after it could not land in Chennai due to the adverse weather conditions. More than 10 flights arriving from cities including Delhi, Mumbai, Bengaluru, Hyderabad, Madurai, Tiruchy and Kolkata were forced to circle in the air for an extended period before landing....