Friday, October 11, 2019

Vagaries exclusive .. Festive weather series..
  • Part 3  ..Delhi , Dehradun , Kolkata , Bhubaneshwar , Guwahati

Past 20 years Dasra day weather averages of 16 cities..
Dasra was as early as 28 Sep and late as 
26 Oct during 1999 to 2018 period..


Dasra generally marks the end of monsoon season over most of the country.Thunderstorms can occur as the monsoon withdraws,with cyclones /disturbances making their presence felt on the eastern seaboard.


1. North India  :
Driest part of the country during Navratri.
As the month of October progresses , North India temps decrease progressively.
Dehradun is crisp,cool and dry during this season.

Dasra day weather averages of the past 20 years (1999 to 2018)

DELHI SFDDEHRADUN
BEFORE 15 OCT35.1 / 22.531 / 19.5
ON / AFTER 15 OCT32.6 / 18.828.8 / 15.2
AVERAGE TEMP34 / 20.830 / 17.7
AVERAGE RAIN PER DAYtracetrace
RAINY DAYS OUT OF 2000
HIGHEST MAX37 32.7 
LOWEST MAX27.826.9
max below 30 c (out of 20 days)1 day11 days

max above 35 c (out of 20 days)6 days0 days
HIGHEST MIN24.422.8
LOWEST MIN16.313.2 
min below 20 c (out of 20 days)0 days15 days
min above 25 c (out of 20 days)1 day0 days
HIGHEST RAINFALL ON 
DASRA DAY
1 mms0.8 mms

2. East India  :
Violent thunderstorms / Cyclones may occur, especially over Orissa during this period.
Kolkata remains sultry during Navratri.
North east India is milder.But it had been really sultry and hot during Dasra 2009.

Dasra day weather averages of the past 20 years (1999 to 2018)

KOLKATA APBHUBANESHWAR GUWAHATI
BEFORE 15 OCT33.4 / 25.731.3 / 24.732.4 / 23.9
ON / AFTER 15 OCT33 / 23.132.6 / 22.930.6 / 21.1
AVERAGE TEMP33.2 / 24.531.9 / 23.931.6 / 22.6
AVERAGE RAIN PER DAY6 mms20.5 mms3 mms
RAINY DAYS OUT OF 20593
HIGHEST MAX35.535.937.8
LOWEST MAX29.626.624
max below 30(out of 20 days)1 day4 days4 days
max above 35(out of 20 days)3 days1 day2 days
HIGHEST MIN27.625.727.6
LOWEST MIN20.521.6 19.3 
min below 20(out of 20 days)0 days0 days2 days
min above 25(out of 20 days)9 days3 days1 day
HIGHEST RAINFALL ON DASRA DAY32 mms169 mms37 mms

9 comments:

nita said...

Very interesting presentation. First time I read something like this.

Rawat said...

Thanks for including North Indian cities.

NilaY Wankawala said...

Must be a tough time getting all these data as no one has ever done this earlier to my knowledge. Great Work.

Rohit Aroskar said...

Thanks Nita , Rawat ,Nilay..
Yeah Nilay..to collate the information is tedious and difficult..but the love for weather makes it tad bit easier..

Manoj said...

Yes, this is a first of its type..weather figures and details of different cities for festival time. Good effort and well appreciated.

sset said...

Extreme thunders and rain in Navi Mumbai - monsoon back in Mumbai? Non stop torrential s

sset said...

https://www.washingtonpost.com/world/japan-advises-5-million-people-to-evacuate-homes-as-typhoon-nears-tokyo/2019/10/12/9e926074-eccc-11e9-bafb-da248f8d5734_story.html

Typhoon Hagibis monstrous 1000mm - 800mm of rain in 24 hrs widespread torrential rains!

Will this impact NEM onset of TN / SAP - no trace of easterlies - worries mount

Saurabh said...

SSET
As per IMD(http://imd.gov.in/pages/allindiawxfcbulletin.php)
Reversal of surface and low level winds from westerly to easterly has commenced over the southeastern parts of peninsular India during the last 24 hours and the easterly wind is likely to strengthen during the next few days.

With the gradual withdrawal of Southwest Monsoon over the northern and central parts of India, conditions are becoming favourable for commencement of northeast monsoon around 17th October, 2019.

sset said...

saurabh: yes I saw IMD report... Rajesh sir gives hint of weak onset which is not positive. Last 5 years NEM has failed continuously - if this time again it fails high time TN and SAP come under desert category - Chennai again day zero crisis emergency - GUJ and RAJ have to be removed from desert section. So much climate has changed...

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