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Cyclone Tauktae Moves Northwards, Rain And Strong Winds Warning In Delhi-NCR
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•May 19, 2021


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India Today


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As Cyclone Tauktae weakens further, its after-effects will bring moderate rains to several parts of north India, including Delhi-NCR, over the next two days, the India Meteorological Department (IMD) said on Tuesday. Kumar Kunal brings in all latest from ground zero.
 

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Western Disturbance and Tauktae both weather systems are meeting today near Himalaya. Meeting Graphic Pic :

1621416607118.png
 

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#PureScience
Cyclone Tauktae & a worrying new trend in Arabian Sea
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•May 19, 2021


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ThePrint


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While historically cyclones are much more common and more intense in the Bay of Bengal, data shows that in the past few years, they’ve started to increasingly strike the Arabian Sea as well. ThePrint’s Sandhya Ramesh explains what is driving the anomalous numbers behind cyclones in this part of the Indian Ocean.
 

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Explained: What caused record rains in Delhi
Delhi rains: The India Meteorological Department (IMD) recorded 119.3mm of rain in the capital on Wednesday, which is the highest-ever 24-hour mark for the month of May.

By: Explained Desk | New Delhi |

Updated: May 21, 2021 1:54:05 pm



Delhi recorded 119.3mm of rain on Wednesday (Express Photo: Abhinav Saha)


In a rare event, the convergence of a cyclone and a Western Disturbance caused record-breaking heavy rainfall in Delhi on Wednesday. The India Meteorological Department (IMD) recorded 119.3mm of rain in the capital on Wednesday, which is the highest-ever 24-hour mark for the month of May.
It happened when Cyclone Tauktae, one of the strongest cyclones to have been recorded in the Arabian Sea, weakened and its remnants moved in the north-northeast direction from the Gujarat coast towards Delhi.


At the same time, a Western Disturbance, which is a weather pattern associated with non-monsoon showers, was moving towards Delhi from the Western Himalayan Region.
The convergence of these two phenomena caused widespread rain in the capital, which caused waterlogging in some parts of the city and led to a road cave-in near Najafgarh in southwest Delhi.


Has Delhi ever witnessed such heavy rainfall previously?
Not in the month of May, but it’s normal for Delhi to receive heavy showers during monsoon.
Rainfall below 15mm is categorised as light, whereas moderate is between 15mm and 65mm and heavy is above 65mm.
On July 19 last year, the city recorded 74.8mm of rain in 24 hours, which brought it to a standstill. In some parts of the capital, the amount of rainfall was over 80mm.
On August 13, south Delhi’s Ayanagar recorded 99.2 mm of rain in 24 hours and four other IMD observatories in Delhi recorded over 70mm.
The average amount of rain expected during July and August in Delhi is 187.3mm and 232.5mm, as per the IMD’s climatological data.


What makes this particular event unusual?
The fact that it happened in May, which is generally a dry month and has not recorded more than 27mm of rain in total since at least 2011 except in 2014 when it touched 100.2mm.
The average amount of rainfall expected in May in the capital is 31.5mm

It is also rare for a cyclone to make its impact felt in Delhi, and more so at the same time when a Western Disturbance is active.


Explained: What caused record rains in Delhi
 

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Delhi Records Coldest May Day in 70 Years

Delhi recorded a maximum temperature of 23.8 degrees Celsius, 16 notches below normal and the lowest in the month of May since 1951.

Updated: May 20, 2021 9:03 AM IST

By India.com News DeskEmailEdited by Kritika BansalEmailFollow


Delhi Records Coldest May Day in 70 Years


A vegetable vendor pedals his tri-cycle on road amid a mild shower, in New Delhi, Wednesday, May 19, 2021. (PTI Photo)


New Delhi: The national capital on Wednesday recorded the coldest day experienced in the month of May in at least 70 years after incessant rains in Delhi due to the impact of Cyclone Tauktae and a western disturbance. Delhi recorded a maximum temperature of 23.8 degrees Celsius, 16 notches below normal and the lowest in the month of May since 1951, the India Meteorological Department (IMD) said. Also Read - Delhi Weather: Light Showers Bring Down Temperature; Heavy Rains due to Cyclone Tauktae
The minimum temperature settled at 21.4 degrees Celsius, five notches below normal.


“Today, Safdarjung recorded a maximum temperature of 23.8 degrees Celsius. This is the lowest maximum temperature since 1951,” Kuldeep Srivastava, the head of the IMD’s regional forecasting centre, said.
In between, a low of 24.8 degrees Celsius was recorded on May 13 1982, he said.

Highest rain recorded on a May day in 35 years
Delhi on Wednesday recorded 60 mm rainfall till 8:30 pm, the highest 24-hour precipitation in May in 35 years, the IMD said.

The capital had recorded 60 mm rainfall in a 24-hour period on May 24 in 1976.
The rainfall in Delhi, Uttar Pradesh, northern Rajasthan, Himachal Pradesh and Uttarakhand on Wednesday is a result of interaction between the remnant of cyclonic storm “Tauktae” and a Western Disturbance, the IMD said.
The Safdarjung Observatory, which provides representative figures for the city, recorded 60 mm rainfall between 8:30 am and 8:30 pm, the IMD said.
“There has been more rain after 8:30 pm. So, the record has already been broken,” R K Jenamani, senior scientist, national weather forecasting centre, said.

Photo: A vegetable vendor pedals his tri-cycle on road amid a mild shower, in New Delhi, Wednesday, May 19, 2021. (PTI)


Photo: A vegetable vendor pedals his tri-cycle on road amid a mild shower, in New Delhi, Wednesday, May 19, 2021. (PTI)

“May remains generally dry. Normally, Delhi gets maximum of 30 mm or 40 mm (24-hour rainfall) in this month. The rain lasts only an hour or less. But this is completely different system coming from Arabian Sea and meeting with a Western Disturbance. Because the feature is rarest, so crossing 60 mm is no surprise,” he said.

Palam, SPS Mayur Vihar and Najafgarh recorded 36.8 mm, 39.5 mm and 57 mm rainfall during the period.
Rainfall recorded below 15 mm is considered light, between 15 and 64.5 mm is moderate, between 64.5 mm and 115.5 mm is heavy, between 115.6 and 204.4 is very heavy. Anything above 204.4 mm is considered extremely heavy rainfall.


Rain forecast for today
The IMD said “rainfall activity is very likely to decrease” on Thursday and “scattered to fairly widespread” rainfall is forecast in the capital.


Maximum temperature lower than Srinagar
The maximum temperature dipped to 22.6 degrees Celsius at Jafarpur and Mungeshpur.
According to the IMD, Delhi’s maximum temperature during the day was less than that of Srinagar (25.8 degrees Celsius) and Dharamshala (27.2 degrees Celsius) up in the north.
Air Quality ‘Satisfactory’

Delhi recorded its air quality in the ‘satisfactory’ category for the second consecutive day on Wednesday due to rainfall and strong winds, according to Central Pollution Control Board data.
The city had recorded a 24-hour average air quality index (AQI) of 78 on Wednesday. It was 93 on Tuesday.
An AQI between 201 and 300 is considered poor, 301-400 very poor and 401-500 severe, while an AQI above 500 falls in the severe plus category.
(With inputs from PTI)




 

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DOUBLE MILESTONE FOR DELHI, COLDEST MAY DAY AND HEAVIEST RAINFALL
May 20, 2021 8:42 PM | Skymet Weather Team


Delhi Rains


Delhi recorded the all-time 24 hours highest rainfall in May beating the earlier record by double the margin. Official repository of meteorological records Safdarjung observatory measured 119mm rainfall in 24hr ending 8.30 am today. The earlier record of 60mm rainfall established on 24th May 1976 was equaled in the evening itself by 5.30 pm and a similar downpour of another 59mm set the record of all-time high. The coming days and years will surely find it difficult to surpass or even match this feat.
Also, yesterday the day temperature plunged 16 degrees celsius below the normal to stay at 23.8 degrees, the lowest in the last 70 years since 1951. Even the minimum temperature today morning slumped to 19.3 degrees, 7 degrees below normal. In the aftermath of cyclone Tauktae, the national capital has scored many firsts meteorological records, difficult to beat in the times ahead:


* All-time high of 24hr rainfall (119mm)
* Lowest maximum temperature since 1951 (23.8 degrees Celsius)
* Lowest minimum temperature in the last 10 years (19.3 degrees Celsius)
* Lowest diurnal variation (2.4 degrees Celsius - 19th May, Min Temp: 21.4 degrees Celsius, Max Temp: 23.8 degrees Celsius)
* Highest monthly rainfall in the last 10years so far (123mm)
* Lowest average of Max Temp. from 01-19 May (37.7 degrees Celsius against normal 39.5 degrees Celsius)
The remnant of cyclone Tauktae, after weakening to a low pressure reached in the close proximity of Delhi. This was supported by well-marked cyclonic circulation. Also, the presence of a western disturbance over the hills interacted with this feature to enhance the spread and intensity of rainfall over Delhi and the neighborhood.
The weather system has moved eastward vacating Delhi-NCR. No significant weather is likely for the next week. However, the mercury will rise appreciably tomorrow onwards and strong winds also are likely to sweep the capital for the next few days.


Double milestone for Delhi, coldest May day and heaviest rainfall
 

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Delhi Receives Highest Rainfall Since 1951 For May

The rain in Delhi and other parts of north India yesterday was a result of interaction between the remnant of cyclonic storm Tauktae and a western disturbance, the weather office said.

All India
Reported by Himanshu Shekhar Mishra, Edited by Shylaja Varma
Updated: May 20, 2021 12:23 pm IST



Delhi Receives Highest Rainfall Since 1951 For May


Delhi's rain in the last 24 hours broke all the previous records for May since 1951.



New Delhi:
Delhi received the highest rain for the month of May in 70 years between yesterday morning and this morning, the Met department said. The capital saw non-stop rain yesterday due to the impact of Cyclone Tauktae and a western disturbance.
At 119.3 mm, this is the highest ever rain since 1951. Previously, such a record was seen on a May day in 1976 when Delhi say 60 mm, almost half of yesterday's figures.
"A record 119.3 mm rain fell in Delhi between 8:30 am on Wednesday and 8:30 am on Thursday, which is a new record for May," Kuldeep Srivastava, the head of the weather office's regional forecasting centre, was quoted as saying by news agency PTI.
The capital's maximum temperature for May too dipped to the lowest in 70 years, with a record 23.8 degrees yesterday. This was16 notches below normal and the lowest in the month of May since 1951. In between, a low of 24.8 degrees was recorded on May 13 1982, Mr Srivastava said.
Delhi's maximum temperature during the day yesterday was less than that of Srinagar (25.8 degrees) and Dharamshala (27.2 degrees).

The rain and the drastic dip in temperature was welcomed by residents who posted comments of surprise and delight as well as pictures of rain from their homes on social media.

Parts of Uttar Pradesh, Rajasthan, Himachal Pradesh and Uttarakhand too received rain yesterday.
5CommentsThis morning, the skies remained cloudy in Delhi, with the weather department saying that "rainfall activity is very likely to decrease" today and "scattered to fairly widespread" rainfall is forecast in the capital.

Delhi Receives Highest Rainfall Since 1951 For May
 

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Even today late morning there good rain in Delhi.
Yes in morning only at Rohini, Delhi.
Moisture was not much for sunny day to pour more rain.

On Wednesday, 19 May 2021 Rain went like crazy for more than 24 hours all the day.
 
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