Five flights were cancelled and over 70 were delayed when fog engulfed the Indira Gandhi International Airport early Friday morning.
According to IGIA's Met department, this was the first time in nine years that fog has remained for such a long duration in February.
"There was 26 hours of fog in February 2000. This year, we have already experienced 20 hours of fog," said R.K. Jenamani, director-in-charge, IGIA Met department.
According to Jenamani, the fog was intense, keeping the runway visibility range less than 175 metres between 2.30 a.m. and 10 am, going down to 25 metres at about 3.30 am.
"While various flights were delayed, five domestic flights to Lucknow, Leh and Kullu had to be cancelled. Nine flights, including seven international ones, were to be diverted to Jaipur, Ahmedabad and Mumbai due to poor visibility," an airport official said.
Low visibility procedure remained enforced at the airport for over nine hours. Due to dense fog conditions, only the new runway was in use from around 2 am to 10.15 am resulting in chaos.