 "Severe cold wave in Delhi, minimum temperature dips to 2 degrees Celsius")
Parts of Delhi reeled under a "severe" cold wave and witnessed "dense" fog on Thursday as the minimum temperature dropped to 2 degrees Celsius, the India Meteorological Department (IMD) said.
Visibility levels dropped to 100 metres at Palam and 201 metres at Safdarjung due to "dense" to "moderate" fog in the morning, an IMD official said.
According to the IMD, "verydense"fogis when visibility is between 0 and 50 metres. In case of "dense"fog, visibility is between 51 and 200 metres, "moderate" 201 and 500 metres, and "shallow" 501 and 1,000 metres.
The Safdarjung Observatory, which provides representative data for the city, recorded a minimum of 2 degrees Celsius, five notches below normal, as against 3.2 degrees Celsius on Wednesday.
The weather stations at Lodhi Road and Ridge recorded a minimum of 2.4 and 3.6 degrees Celsius, respectively.
In the plains, the IMD declares acoldwaveif the minimum temperaturedips to 4 degrees Celsius. A severecoldwaveis when the minimum is 2 degrees Celsius or less.
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Coldand dry northerly/northwesterly winds from the western Himalayas have been barreling through the plains, bringing theminimum temperature in north India down, Kuldeep Srivastava, the head of the IMD's regional forecasting centre said.
On January 1, the city had recorded a minimum of 1.1 degrees Celsius, lowest for the month in 15 years.
Delhi had been registering above-normal minimum temperatures till Monday, as a cloud cover persisted over the city under the influence of successive Western Disturbances.
However, the temperature started dropping with the commencement of cold northwesterly winds after the withdrawal of the latest WD.
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