Revision as of 12:33, 9 December 2018

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December as a whole

1945- 2017

i) December temperatures in Delhi, 1945- 2017
ii) December temperatures in Delhi in 2017
From The Times of India

See graphic, 'i) December temperatures in Delhi, 1945- 2017
ii) December temperatures in Delhi in 2017 '

2015-17: mild Decembers, but not global warming

Amit.Bhattacharya | Dec 2017 City misses New Year chill — for third year in a row The Times of India

New Delhi: For the third time in a row, Delhiites ushered in the New Year without experiencing the severe chill so characteristic of peak winter in the capital. This was the third consecutive December in Delhi without the temperature falling below 5 degrees Celsius for a single day.

The month of December can sometimes be mild in Delhi. But to have three such Decembers back-to-back is much more unusual — this was just the second instance in the past 25 years. The average maximum temperature this December was almost one degree above the 25-year mean while the average minimum was higher by 0.7 degree C.

Is this part of a larger global warming trend? Met officials say it’s difficult to make that connection.

“We analysed temperature data for December since 1992 and found no significant trends. The average minimum temperatures seem to be rising but not enough for it to be climatologically significant,” said Kuldeep Srivastava, head of the Regional Weather Forecasting Centre.

Srivastava offered a more direct reason for the warmish trend this December — high altitude wind flows called western disturbances. WDs, as these are usually called, regulate winter weather in north India by bringing in cold and wet spells into the region from as far out as southern Europe.

“This year, only one WD impacted Delhi-NCR this month, when the city got rain on December 11, followed by a sharp drop in night temperature. Other WDs have been coming into the region, but all of them are so positioned that they have only been affected Jammu and Kashmir,” Srivastava said.

On an average, two to three WDs hit NCR in December, he added.

December this year has seen mostly clear skies, which has played a role in keeping day temperatures on the higher side. “Wind direction too has been mostly westerly, whereas it’s northerly winds that bring temperatures down during this time of the year,” the RWFC official said.

Average temperatures this month, however, weren’t as high as in the same month last year, which was the second warmest December on record in Delhi since 2000.

1st December

2nd December

Delhi/ 9°C min/ 2018

Delhi’s minimum temperature was recorded at 9 degrees Celsius, normal for this time of the year. The capital has been recording a minimum temperature below 11 degrees Celsius for the last few days.

3rd December

Kashmir and Ladakh, 2018

Srinagar witnessed the coldest night of the season as the minimum temperatures dropped due to clear night sky. The other minimum temperatures recorded were:

Gulmarg minus 3.1 degrees Celsius

Kargil minus 9.0 degrees Celsius.

Leh town 9.3 degrees Celsius

Pahalgam minus 5.1 degrees Celsius

4th December

Delhi/ 8. 6°C min/ 2018

The temperature dipped to 8.6°C min on 3 and 4 Dec 2018.

2018, Jammu & Kashmir

Minimum (i.e. night) temperatures

Banihal 2.5 degrees Celsius

Batote 3.4 degrees Celsius,

Bhaderwah 1.3 degrees Celsius.

Gulmarg minus 4.0 degrees Celsius,

Jammu city 8.9 degrees Celsius,

Kargil minus 9.7 degrees Celsius, Jammu

Katra 8.6 degrees Celsius,

Leh minus 10.6 degrees Celsius,

Pahalgam was at minus 5.5 degrees Celsius,

Srinagar recorded the coldest night of the season so far at minus 3.2 degrees Celsius as the temperatures started dipping across Kashmir.

Day (i.e. maximum temperatures)

Banihal 17.1 degrees Celsius

Batote 17.3 degrees Celsius,

Bhaderwah 15.8 degrees Celsius.

Gulmarg 7.0 degrees Celsius,

Jammu city 23.5 degrees Celsius,

Kargil minus 4.0 degrees Celsius,

Katra 20.4 degrees Celsius,

Leh 8.2 degrees Celsius,

Pahalgam was at 11.0 degrees Celsius,

Srinagar recorded 11.2 degrees Celsius

5th December

Delhi/ 9 to 14°C min/ 2011-17

The Times of India

In 2011, the minimum on December 5 touched 11 degrees Celsius

In both 2012 and 2016, it was 9°C min.

In 2017, it was quite high at 14 degrees Celsius, IMD data showed.

Delhi/ 8.4°C min/ 2018

Wednesday was the coldest day of the season in the capital with the minimum temperature dipping to 8.4 degrees Celsius, one degree below the average for this time of the year. It was also the chilliest December 5 in eight years.

6th December

7th December

Jammu & Kashmir: 2018

Daily Excelsior

Minimum temperatures

Bannihal 5.2 degrees Celsius

Batote 7.5 degrees Celsius

Bhaderwah 0.5 degrees Celsius

Gulmarg minus 6.2°C

Jammu city 7.3 degrees Celsius,

Katra 7.5 degrees Celsius

Pahalgam minus 6.0 degrees Celsius

Srinagar minus 4.0 degrees Celsius

The maximum day temperatures

Bannihal 15.1 degrees Celsius

Batote 15.8 degrees Celsius

Bhaderwah 13.8 degrees Celsius .

Gulmarg 5.3 degrees Celsius

Jammu city 22.2 degrees Celsius

Katra 19.6 degrees Celsius

Pahalgam 9.1 degrees Celsius

Srinagar 11.0 degrees Celsius

8th December

Delhi/ between 7.6, 14 °C min/ 2011-18

The Times of India

Minimum temperatures

2018: 7.6 °C

2012: 9°C

2016: 9 degrees Celsius

2017: 9 degrees Celsius,

2014: 10°C

2013: 10°C

2015: 12°C

2011: 14°Celsius.

9th December

10th December

11th December

Delhi/ 2mm: first wet spell in December in 3 years/ 2017

Light rain hit Delhi and National Capital Region on Monday evening, bringing with it the prospect of relief from high pollution levels that were hovering close to “severe” till the morning and some winter chill over the next few days.

The Safdarjung weather station had recorded 2mm of rain till 8.30pm and more rain was forecast for later in the night and Tuesday morning. This was the first proper wet spell in the month of December in the capital for the past three years. The capital did not get any rain in December in 2015 and ’16, while almost trace rain (0.1mm) was recorded last week (December 7).

Delhi’s overall air quality index was 361on Monday, which falls in the “very poor” category. However, air quality is likely to improve to “poor” or “moderate” levels on Tuesday.

Data according to CPCB’s central control room on Monday showed average PM 2.5 levels at 246 micrograms per cubic metre at 7 pm, while the average PM 10 levels were recorded at 417 micrograms per cubic metre – both over four times the safe standard.

12th December

2017/ 7.8 mm rain, air gets better

Rain makes city colder, but air now so much better

The city’s maximum temperature plummeted on Tuesday after a spell of evening and overnight showers. Till 8.30am, 7.8 mm of rain was recorded, resulting in a sharp drop in pollution levels as well. The overall Air Quality Index (AQI) which was hovering close to “severe” levels on Monday morning fell to the “poor” category with an AQI of 214 recorded on Tuesday.

Capital’s Safdarjung observatory — which is considered as the base for Delhi’s weather — recorded 7.8mm of rainfall till 8.30am on Tuesday, while other weather stations also received similar rainfall overnight. Palam, Lodhi road and Ridge all received 6.8mm of rainfall till 8.30 am, while Ayanagar recorded 4.8mm of rainfall in the same period.

“The overnight showers have also contributed to a drop in pollution levels. Delhi’s average PM10 levels were hovering close to 420 micrograms per cubic metre on Monday afternoon, which were recorded at 139 micrograms per cubic metre on Tuesday at 8pm. Similarly, average PM2.5 levels which were recorded at 246 micrograms per cubic metre on Monday fell to 113 micrograms per cubic metre on Tuesday. The corresponding safe values for both ultrafine particles is 100 and 60 micrograms per cubic metre respectively.

In the National Capital Region (NCR), Ghaziabad, Noida and Faridabad were all recorded in the “poor” category, while Gurgaon recorded “moderate” air quality with an AQI of 192. Delhi’s average PM 2.5 levels hovered around two times the safe standard and levels are forecast to dip even more, experts said.

12th December

13th December

14th December

Delhi/ 19.1°C max, between 4.9 and 11.2 °C min, 2017

19.1 degrees Celsius: this was the lowest maximum temperature of the season [till that day]; minimum temperature on Thursday was 11.2 degrees Celsius [presumably at Safdarjang] The Palam weather station recorded a minimum of 8 degrees Celsius, while Lodhi Road and Ayanagar recorded a minimum of 6.6 and 7.5 degrees. The lowest was recorded at the Ridge where it fell to 4.9 degrees, an official said.

Mumbai/ 15.8°C, 2017

At 15.8 degrees Celsius, temperature dips to season’s lowest in Mumbai

15th December

Delhi/ 19.5°C max, 7.3°C min, 2017

The maximum temperature in the city stayed below the 20-degree mark for the second consecutive day on Friday while the minimum temperature plunged to 7.3 degrees Celsius [presumably at Safdarjang] — the lowest this season. The maximum temperature was 19.5 degrees Celsius — four notches below normal for the season.

16th December

Delhi, 7.6°C, 2017

Minimum temperature recorded at 7.6 degrees Celsius – one notch below normal for the season.

17th December

18th December

19th December

20th December

21st December

22nd December

23rd December

24th December

25th December

26th December

27th December

28th December

29th December

2017, Kashmir and Ladakh

Gulmarg in north Kashmir settled at a low of minus 5.4 degrees Celsius over a degree colder than the previous night’s minus 4 degrees Celsius. The day temperature was 3.0 degrees Celsius, 0.3 degrees above normal.

Kargil town night temperature settled at a low of minus 9.2 degrees Celsius compared to minus 9.6 degrees Celsius the previous night. The day temperature was 0.6 degrees Celsius.

Kokernag town recorded a low of 0.2 degree Celsius – up from yesterday’s minus 1.1 degrees Celsius. The day temperature settled at 10.4 degrees Celsius, 4.1 degrees above normal.

Kupwara town in north Kashmir registered a low of minus 3.5 degrees Celsius last night, a decrease of over a degree from the previous night’s minus 2.4 degrees Celsius. The day temperature was 14.3 degrees Celsius, 6.3 degrees above normal.

Leh town recorded a low of minus 11.4 degrees Celsius a decrease of over four degrees from the previous night’s minus 7.1 degrees Celsius. The day temperature was 4.5 degrees Celsius.

Pahalgam night temperature recorded a low of minus 5.4 degrees Celsius, nearly three degrees down from yesterday’s minus 2.5 degrees Celsius. The day temperature was 9.3 degrees Celsius, 3.6 degrees above normal.

Qazigund in south Kashmir settled at a low of minus 2.4 degrees Celsius, nearly a degree down from minus 1.6 degrees Celsius the previous night. The day temperature was 12.2 degrees Celsius, 4.3 degrees above normal.

Srinagar city recorded the minimum temperature of minus 2.8 degrees Celsius last night, slightly down from minus 2.7 degrees Celsius the previous night. The day temperature was 12.4 degrees Celsius, 4.5 degrees above normal.

30th December

31st December

Delhi/ Season’s worst fog hits 220 flights/ 2017

TIMESNEWSNETWORK

New Delhi: It was a nightmare for travellers flying in and out of Delhi on 31 Dec 2017 morning as almost 220 flights from IGI airport were affected by the season’s worst fog.

Visibility at the airport fell to as low as 50 metres on the morning of New Year’s eve, with flight schedules going haywire. Low visibility also affected train services in the morning, with over 90 delayed, cancelled and re-scheduled due to the dense fog.

Over 150 flights were delayed and nearly 50 were diverted . Furthermore, around 20 flights were cancelled due to low visibility on the runway.

15 trains cancelled, 57 delayed due to fog

According to Met officials, visibility fell below 200 metre by 6am which is classified as “dense” and it further intensified to “very dense” by 7am when the visibility fell below 50 metre in the airport area. Sources said that no flight could take off for nearly four hours between 7.30am and 11.00am— there should be a minimum runway visibility of 125 metre for flights to take off.

“Fog of very dense category severely affected the IGI airport in the morning, with both general airport visibility and runway visibility at all sides remaining below 75 metre. This is by far the worst fog of the season,” said an airport Met official.

IGI airport is CAT IIIB compliant because of which pilots qualified to land in visibility of 25-50 metre were able to land during this period. However, nearly 50 flights were diverted to nearby airports as many pilots were not CAT IIIB-compliant.

Airport sources said that even though visibility improved to 2,000 metre during the day and operations at the airport restored to normal, delays continued throughout the day.

Meanwhile, the dense fog also led to 57 trains arriving late in the morning and 18 more were re-scheduled. Railway officials said another 15 trains had to be cancelled due to poor visibility. Met officials forecast dense fog for Monday morning as well with maximum and minimum temperatures to be around 23 and 5 degrees Celsius, respectively. The minimum temperature on New Year’s eve was recorded at 6.4 degrees Celsius — one degree below normal.

See also

January weather in India <> February weather in India <> March weather in India <> April weather in India <> May weather in India <> June weather in India <> July weather in India <> August weather in India <> September weather in India <> October weather in India <> November weather in India <> December weather in India