TWM Special – May month Climatology of Chennai, with rare supporting data

Clouds went slightly north & south of Chennai and down south Tuty and Nellai district gets good rains (2nd one of the season). Chengalpet and Cuddalore districts too gets very good rains (1st one of the season). Still Chennai region got decent rainfall ending today morning. Not the heavy ones we expected.

Chennai convergence has shifted south and yaru kannu vechakangalo only Chennai only Chennai, we missed what would been a very good spell. For areas like Cuddalore and Delta, this is the 1st spell of Monsoon rains after onset, they deserve it, Chennai has been lucky to many spells compared other coastal giants and have crossed 400 mm in this monsoon, while other stations are yet to cross even 150 mm rainfall in Delta / Cuddalore / Pondy.

Palayamkottai and Tuty town gets heavy rain – Palyamkottai got its highest rainfall of the year with 63 mm while Tuty  has got 53 mm.

Today

Today the easterlies will go inland, so many interior parts of Tamil Nadu like Dindigul, Madurai, Virudhunagar, Theni, Thoothukudi, Ramanathapuram, Nellai, Coimbatore, Tiruppur, Erode, Nilgiris and Kanyakumari will get good rains. Delta belt, Cuddalore, Tvmalai, Villupuram, Kallakuruchi, Salem will see rains in day time. Chennai will see isolated spells with sun shining bright at times.

Heavy rains possible in western districts such as Nilgiris, Tiruppur, Thoothukudi, Tirunelveli, Dindigul, Virudhungar and Theni districts at some places.

The next key date for Chennai is 15-16th, November. Clash of westerly trough and easterlies happening with ridge in between. Lets look forward to

Diwali day

For Chennai the Diwali day might start with with some moderate rains in the morning, but as we go into day, rains will clear noon, evening and early nights will be clear for celebration of Diwali. Then going into mid-nights and early morning of 15th, the rains will pick up.

15-16th November – Easterlies clash with Westerly Trough

Coming to 15-16th November, the entire TN coast from Chennai to Delta will have chance for heavy rains, these two days needs watch as always these kind of clashes have produced surprise rainfall for the State.  More on that we can see later.

Chennai and Surrounding regions rainfall in mm on 13.11.2020

DGP Office (Mylapore) – 57
Mahabalipuram – 57
Tirukalakundram – 57
Chennai Collectorate (Parrys) – 55
Ennore – 54
Anna University (Guindy) – 47
Redhills – 45
Perambur – 43
Aynavaram – 43
Ponneri – 43
Nungambakkam – 41
Alandur – 40
Tondairpet – 40
Meenambakkam – 39
Chengalpattu – 38
Cheyyur – 37
Ambattur – 36
Madurantagam – 35
MGR Nagar (KK Nagar) – 33
Tambaram – 30
Gumidpoondi – 29
Cholavaram – 20
Kancheepuram – 16
Poonamalle – 15
Thamaraipakkam – 15
Chembarabakkam – 12
Poondi Lake – 10
Uthieramerur – 10

Salem
—–
Kariyakovil Dam – 85
Karumandurai – 70
Thammpatti – 38
Attur – 34
Yethapur – 27
Anaimaduvu Dam – 15
Danishpet – 14
Yercaud – 12
Veeraganoor – 10

Tirunelveli
———-
Palyamkottai – 63
Papanasam Dam – 42
Servalar – 34
Lower Papanasam – 30
Ambasamudaram – 29
Cheranmahadevi – 26
Manimuthar – 25
Nanguneri – 20
Tirunelveli – 11

Thoothukudi
———–
Srivaikundam – 57
Thoothukudi Port – 53
Thoothukudi AWS – 46
Tiruchendur – 18
Maniyachi – 18
Thoothukudi Town – 21
Kayalpattinam – 11
Kadambur – 10
Kayathar – 10

Cuddalore
———-
Cuddalore – 52
Vanamadevi – 26
Chidambaram AWS – 21
Kudithangi – 20
Annamalai Nagar – 19
Parangipettai – 18
Kurinjipadi – 10
Kattumannarkoil – 10

Kallakuruchi
———-
Manalurpet – 35
Sankarapuram – 25
Kachirayapalayam – 18
Madampoondi – 18
Marakkanam – 15
Tirupalapandal – 15
Moorarpalayam – 14
Keelpadi – 12
Tirukkoilur – 10
Moongilthuraipattu – 10

Nagapattinam
————
Sirkali – 38
Vedaranyam – 38
Kollidam – 27
Thirupoondi – 26
Mayiladuthurai – 26
Thalanayar – 16
Manalmedu – 16

Nilgiris
——-
Billimalai – 30
Coonoor – 15
Coonoor PTO – 15
Kodanad – 13
Kotagiri – 12
Chamraj – 10
Kinnikorai – 10
Alakkarai – 10
Adar – 10

Tiruvannamalai
————–
Vandavasi – 28
Vembakkam – 26
Polur – 23
Arani – 10
Chetpet – 10

Pudukottai
———–
Manamelkudi – 22
Malaiyur – 11
Karambakudi – 10

Villupuram
——–
Vanur – 20
Anandhapuram – 18
Soorapattu – 16
Mugaiyur – 10

Kanyakumari
———–
Upper Kodayar – 40
Kanyakumari – 18
Mylaudy – 12
Kannimar – 10
Pechiparai – 10
Perunchani – 10
Chittar I – 10
Puthan Dam – 10
Lower Kodayar – 10

Others
——
Karaikkal, Karaikkal – 28
Thiruthuraipoondi, Tiruvarur – 14
Manamadurai, Sivagangai – 11
Palani, Dindigul – 11
Avinashi, Tiruppur – 10
Oddenchatram, Dindigul – 10
Madukkur, Thanjavur – 10
Adiramapattinam – Thanjavur – 10

Wish you all a Happy and Safe Diwali.