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Updated December 28th, 2019 at 12:37 IST

Delhi witnesses the coldest day of season, fog affects air and rail traffic

The national capital on Saturday recorded its coldest day of the season as the minimum temperature plummeted to 2.4 degrees Celsius in the morning

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The national capital on Saturday recorded its coldest day of the season as the minimum temperature plummeted to 2.4 degrees Celsius in the morning, officials said. Dense fog enveloped the city reducing visibility and affecting air traffic and vehicular movement in the streets. 

Mercury fell to its lowest in Delhi this season with the Safdarjung Observatory, whose reading is considered the official marking for the city, recording 2.4 degrees Celsius in the morning. Other observatories recorded as follows: Palam 3.1 degrees Celsius, Lodhi Road 1.7 degrees Celsius, Aya Nagar 1.9 degrees Celsius, a senior MeT Department official said.

Due to very dense fog, zero visibility was reported in Palam Observatory area, which neighbours the city airport. Due to heavy fog on Saturday morning, four flights have been diverted from Delhi airport, said an airport official.

READ | Delhi Wakes Up To 2.4 Degrees Celsius On Saturday

 Air and rail traffic affected

The official said that the flights are operating at the airport under CAT III B conditions, which means that the runway visual range (RVR) is between 50 metre and 175 metres. According to railway officials, 24 trains were delayed due to poor visibility, ranging from 2-5 hours. Howrah New Delhi Poorva Express delayed by five hours.

The air quality turned severe again on Saturday, as falling temperatures, high humidity and low wind speed allowed the accumulation of pollutants. The overall air quality index stood at 413 at 10 am. Cold wave and the severe cold day have been forecast over Delhi-NCR on Saturday, senior meteorologist at IMD, Kuldeep Srivastava said.

READ | 21 Delhi-bound trains delayed due to dense fog in north India

The temperature drops to 2.4 degrees

Since 1992, the minimum temperature at Safdarjung Observatory was 2.4 degrees Celsius on December 30, 2013, and 2.3 degrees Celsius on December 11, 1996. The all-time record of low is zero degrees on December 27 in 1930, he said.

With chilling cold continuing to sweep Delhi-NCR, the region is expected to record its second-coldest December since 1901, the weather department had said on Thursday.

READ | Delhi: AQI At 367 'very Poor' Category In Areas Around India Gate As Per CPCB

"The mean maximum temperature for December was less than 20 degrees Celsius only in 1919, 1929, 1961 and 1997," an official of the India Meteorological Department said.

In December this year, the mean maximum temperature (MMT) till Thursday was 19.85 degrees Celsius. It is expected to dip to 19.15 degrees Celsius by December 31, he said.

Since December 14, most parts of the city have witnessed 15 consecutive "cold days" or a 15-day "cold spell". The last time such a long cold spell was witnessed was in December 1997.

After 1992, Delhi has had cold spells only in four years - 1997, 1998, 2003 and 2014. "Severe cold day/cold day" conditions are predicted till December 29.

READ | Delhi And Nearby Areas Likely To Hit By Cold Waves: IMD

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Published December 28th, 2019 at 12:37 IST

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