Dust storm followed by Thunderstorm with light rainfall and lightning (40-60 Km/h gusty winds) is very likely to occur at many places of Delhi in next two hours, IMD has said. Places that will be affected include IGI Airport, Dwarka, Palam, Rohini, Bawana, Punjabi Bagh, Rajauri Garden and Nazafgarh among others. This is IMD's second such warning in two days.