<p>According to airport authorities, at least 100 flights were delayed and two were diverted from Delhi to another route due to Delhi's dense fog early Tuesday morning. The visibility at Delhi's Indira Gandhi International Airport dropped to less than 200 metres on Tuesday morning.&nbsp;A 'delay' is defined as a deviation of more than 15 minutes from the scheduled time of arrival or departure.</p>

<p>Airport officials reported that two flights, one SpiceJet flight around 11:45 pm and another IndiGo flight at 2:15 am, both were diverted to Jaipur due to heavy fog this season.&nbsp;</p>

<p>Also Read |<a href="https://www.wionews.com/india-news/temperatures-across-kashmir-region-plummet-further-547255">&nbsp;Temperatures across Kashmir region plummet further</a></p>

<p>"In both cases, the pilots were not CAT-III B compliant and therefore, were not given permission to land at the airport. During this period, visibility was around 50 metres and the ATC guided both flights to the nearest airport, which is Jaipur", said an airport official.</p>

<p>When visibility falls below 800 metres, the airport initiates low visibility procedures (LVP), which are measures designed to make landing easier for flights. CAT-I procedures are in effect during this time, which is the most basic set of precautions to guide pilots in landing. Only CAT-II compliant flights and pilots are permitted to land when visibility is less than 550 metres, while CAT-III A pilots are permitted to land when visibility is between 175 and 300 metres. CAT-III B qualifications are the most stringent for a pilot to land a flight, allowing them to land even when visibility is less than 50 metres.</p>

<p>Watch|&nbsp;Winter storm kills 60 across US; over 15,000 flights cancelled</p>

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<p>While flights can still land at the airport when visibility is 50 metres, no flights are allowed to depart unless the runway visibility range (RVR) is 125 metres. “This led to some arrivals and departures being delayed,” an official said.</p>

<p>A Met official said visibility was at its worst at the airport between 3:30 am and 7:30 am, "During this four-hour window, visibility at both Palam and Safdarjung was 50 metres, with CAT-III B procedures in place. It increased to 100 metres at 7:30 am and then increased substantially to over 500 metres by 9:30 am", the official said.</p>

<p>Forecasts suggest that Delhi is likely to see more dense fog in the next two days, especially on New Year's Eve.&nbsp;</p>

<p>&nbsp;</p>

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According to airport authorities, at least 100 flights were delayed and two were diverted from Delhi to another route due to Delhi's dense fog early Tuesday morning.

According to airport authorities, at least 100 flights were delayed and two were diverted from Delhi to another route due to Delhi's dense fog early Tuesday morning. The visibility at Delhi's Indira Gandhi International Airport dropped to less than 200 metres on Tuesday morning. A 'delay' is defined as a deviation of more than 15 minutes from the scheduled time of arrival or departure. Airport officials reported that two flights, one SpiceJet flight around 11:45 pm and another IndiGo flight at 2:15 am, both were diverted to Jaipur due to heavy fog this season. Also Read | Temperatures across Kashmir region plummet further "In both cases, the pilots were not CAT-III B compliant and therefore, were not given permission to land at the airport. During this period, visibility was around 50 metres and the ATC guided both flights to the nearest airport, which is Jaipur", said an airport official. When visibility falls below 800 metres, the airport initiates low visibility procedures (LVP), which are measures designed to make landing easier for flights. CAT-I procedures are in effect during this time, which is the most basic set of precautions to guide pilots in landing. Only CAT-II compliant flights and pilots are permitted to land when visibility is less than 550 metres, while CAT-III A pilots are permitted to land when visibility is between 175 and 300 metres. CAT-III B qualifications are the most stringent for a pilot to land a flight, allowing them to land even when visibility is less than 50 metres. Watch| Winter storm kills 60 across US; over 15,000 flights cancelled × While flights can still land at the airport when visibility is 50 metres, no flights are allowed to depart unless the runway visibility range (RVR) is 125 metres. “This led to some arrivals and departures being delayed,” an official said. A Met official said visibility was at its worst at the airport between 3:30 am and 7:30 am, "During this four-hour window, visibility at both Palam and Safdarjung was 50 metres, with CAT-III B procedures in place. It increased to 100 metres at 7:30 am and then increased substantially to over 500 metres by 9:30 am", the official said. Forecasts suggest that Delhi is likely to see more dense fog in the next two days, especially on New Year's Eve. WATCH WION LIVE HERE You can now write for wionews.com and be a part of the community. Share your stories and opinions with us here.

Delhi: At least 100 flights delayed, two diverted as heavy fog envelops the capital

<p>Low visibility conditions on Tuesday disrupted<a href="http://www.wionews.com/india-news/pollution-at-emegency-level-in-past-two-days-in-delhi-186191"> flight operations at the Delhi </a>airport and departures were put on hold for two hours, an official said.</p>

<p>Three international and one domestic flight have been diverted so far while arrivals have not been stopped, the official added.</p>

<p>The minimum visibility required for takeoff is 125 metres.</p>

<p>According to the official, since the Low Visibility Take Off (LVTO) requirement is not being fulfilled, the departure of flights was on hold for two hours from around 0715 hours.</p>

<p>The departure of flights resumed at 0916 hours.</p>

<p>The Indira Gandhi International Airport is the busiest in the country and on an average sees more than 70 flight movements per hour. This includes both arrivals and departures.</p>


Low visibility conditions on Tuesday disrupted flight operations at the Delhi airport and departures were put on hold for two hours, an official said. Three international and one domestic flight have been diverted so far while arrivals have not been stopped, the official added.

Low visibility conditions on Tuesday disrupted flight operations at the Delhi airport and departures were put on hold for two hours, an official said. Three international and one domestic flight have been diverted so far while arrivals have not been stopped, the official added. The minimum visibility required for takeoff is 125 metres. According to the official, since the Low Visibility Take Off (LVTO) requirement is not being fulfilled, the departure of flights was on hold for two hours from around 0715 hours. The departure of flights resumed at 0916 hours. The Indira Gandhi International Airport is the busiest in the country and on an average sees more than 70 flight movements per hour. This includes both arrivals and departures.

Low visibility disrupts flight operations at Delhi airport

<p>North India woke up Wednesday to its first foggy morning of the season with the poor visibility leading to the cancellation of flights and trains.&nbsp;</p>

<p>Five flights were diverted away from the Indian capital Delhi&#39;s Indira Gandhi International Airport.&nbsp;</p>

<p>PTI reported that 50 north-bound trains and 18 planes were delayed.&nbsp;</p>

<p>Apart from Delhi, fog, low visibility, and a considerable drop in temperature were also reported from the north Indian states of Punjab, Haryana, and Uttar Pradesh.&nbsp;</p>

<p>&quot;This is the season&#39;s first fog cover...The skies are expected to remain clear during the day and the maximum temperature is expected to hover around 28 degrees Celsius,&quot; PTI reported an official as saying of Delhi&#39;s weather.<br />
&nbsp;</p>

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<p dir="ltr" lang="en">Dense fog cover shrouds Delhi, NCR (early morning visuals) <a href="https://t.co/9LIkFOXiTy">pic.twitter.com/9LIkFOXiTy</a></p>
&mdash; ANI (@ANI_news) <a href="https://twitter.com/ANI_news/status/803779088007606272">November 30, 2016</a></blockquote>
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<p>Meanwhile, Delhi continued to be hit by pollution with reports saying PM (particulate matter) 2.5 and 10 were still at &#39;severe&#39; levels.</p>

<p>(WION with inputs from PTI)<br />
&nbsp;</p>


Media reports said 50 north-bound trains and 18 flights were delayed

North India woke up Wednesday to its first foggy morning of the season with the poor visibility leading to the cancellation of flights and trains. Five flights were diverted away from the Indian capital Delhi's Indira Gandhi International Airport. PTI reported that 50 north-bound trains and 18 planes were delayed. Apart from Delhi, fog, low visibility, and a considerable drop in temperature were also reported from the north Indian states of Punjab, Haryana, and Uttar Pradesh. "This is the season's first fog cover...The skies are expected to remain clear during the day and the maximum temperature is expected to hover around 28 degrees Celsius," PTI reported an official as saying of Delhi's weather. Dense fog cover shrouds Delhi, NCR (early morning visuals) pic.twitter.com/9LIkFOXiTy — ANI (@ANI_news) November 30, 2016 × Meanwhile, Delhi continued to be hit by pollution with reports saying PM (particulate matter) 2.5 and 10 were still at 'severe' levels. (WION with inputs from PTI)

North India wakes up to season's first foggy morning