Dense fog engulfs the national capital, on Dec 30, 2019. Delhi and national capital region (NCR) were enveloped in a thick blanket of fog on Monday morning, reducing the visibility and affecting air traffic and vehicular movement. At least 30 Delhi-bound trains were delayed for one to seven hours due to the low visibility in several parts of northern India. The minimum temperature recorded at the Safdarjung observatory was 2.6 degrees Celsius), Palam at 2.9 degress Celsius and Lodhi Road 2.2 at degrees Celsius, according to the India Meteorological Department (IMD)
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New Delhi:

Dense fog-induced low visibility conditions led to the diversion of 20 flights from the Indira Gandhi International Airport (IGIA) here on Monday.

According to sources, these flights had to be diverted as pilots were not trained to operate in CAT IIIB conditions.

Reportedly, heavy fog had started to envelop the airport around 6 a.m.

“The low visibility conditions lasted from 6 a.m. to 12:30 p.m. during which 20 flights were diverted and 4 were canceled. Landings and take-offs continued using the CAT IIIB Instrument landing system during the period,” sources said.

“After 12:30 p.m. the visibility improved to over 600 meters and the operations were shifted to CAT II.”

The airport has a technologically superior CAT (category) IIIB ILS system, which allows compliant aircraft and trained pilots to land even when the runway visibility is just 50 meters.

This year, new air traffic control (ATC) tower, thermal imaging cameras, and first-of-its-kind 24X7 social media command centers are being used to manage operations during the reduced visibility conditions.

Consequent to fog, private airlines IndiGo and Vistara issued a travel advisory for their passengers saying flights to and from the national capital have been impacted due to bad weather and poor visibility.

Dense fog and eventual poor visibility have caused flight delays and cancellations across north India in the past few days.

In a tweet on Monday, IndiGo said: “#6ETravelAdvisory: Due to poor visibility in #Delhi, our flights are impacted. Do keep a track of your flight status.”

Vistara also said that its flights to and from the capital have been delayed affecting its other flights too.

“Due to dense fog and poor visibility in Delhi, arrivals/departures from Delhi are delayed with consequential impact across the network,” it said.

Early on Monday, budget airline SpiceJet also asked its passengers, scheduled to travel to and from Delhi to keep a track of their flight status.

“Due to bad weather at Delhi (DEL), all departures/arrivals and their consequential flights might get affected. Passengers are requested to keep a check on their flight status,” the airline tweeted.

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