Fog occurred due to increased humidity caused by rain
Four flights were cancelled and 18 diverted owing to an abrupt bout of fog which descended at the Indira Gandhi International Airport here on Thursday morning. Several flights were delayed.
An Airport Meteorological Department spokesperson said: “The fog was expected owing to the increased humidity caused by rain. Moisture was added to the atmosphere, the temperature fell and condensation of water molecules took place. The general visibility was less than 50 metres from about 5-30 a.m. to 11 a.m.”
The cancelled flights included two Jet Airways flights from Delhi to Dehra Dun and Dehra Dun to Delhi and two JetLite flights bound from Delhi to Bangalore and Chandigarh.
Nine Delhi-bound flights had to be diverted to Jaipur. These included four Kingfisher flights from Chennai, Bangalore, Jaipur and Mumbai, three SpiceJet flights from Hyderabad, Bangalore and Mumbai and two Air India flights from Kolkata and Mumbai.
Ahmedabad received four diverted flights which were bound for the Capital including a JetLite flight from Chennai, an IndiGo and an Air India flight from Hyderabad, and a Kingfisher flight from London Heathrow.
Two Jet Airways flights bound from Bhopal and Mumbai for Delhi were diverted to Amritsar and Chandigarh respectively while two JetLite flights from Mumbai were diverted to Vadodara and Chandigarh and one flight from Bangalore was diverted to Lucknow.
A total of 120 flights were operated under various categories of the instrument landing system. While 49 flights were operated under the CAT-I ILS, 14 were operated under CAT-IIIA ILS and 57 under CAT-IIIB ILS.
Low visibility procedures prevailed on runway 11/29 and 10/28 from about 4-45 a.m. on Thursday morning till a little after 11-30 a.m.
There is less possibility of dense fog on Friday.