Updated On: 12 January, 2024 02:35 PM IST | ronak mastakar
A layer of fog draped over the Indo-Gangetic plains and extended up to the northeast on Friday, bringing down visibility and affecting rail movement, officials said (Pics/PTI)

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A spokesperson for the Railways said that fog impacted the schedule of "23 trains arriving in Delhi"
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Satellite imagery showed a layer of fog/low-level clouds over Punjab, Haryana, Delhi, Uttar Pradesh and Bihar, extending up to northeast India. Patches of fog were also visible over Odisha

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The India Meteorological Department (IMD) said that visibility levels dropped to zero at Delhi`s Palam observatory near the Indira Gandhi International Airport
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One could see up to a distance of 200 meters at the Safdarjung Airport, an IMD official said

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Visibility levels plunged to 25 metres in Amritsar in Punjab and Lucknow and Varanasi in Uttar Pradesh; 50 metres in Chandigarh, Uttar Pradesh`s Bareilly, Bihar`s Purnia and Assam`s Tezpur; and 200 meters in Ambala in Haryana and Ganganagar in Rajasthan
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According to the IMD, very dense fog is when visibility is between 0 and 50 metres, between 51 and 200 metres is dense, between 201 and 500 metres moderate, and between 501 and 1,000 metres shallow

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The IMD on Thursday said dense to very dense fog is likely during morning hours in parts of northwest India over the next five days
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The northern plains got some relief on Wednesday and Thursday as the sun shone through the thinned layer of fog, but chilly winds kept the temperatures down