Rare UAC rains from Sea for Chennai and Heavy rains for Kerala, Valparai, Kanya, Theni & Nilgiris

July 29, 2020
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As you can see a rare UAC near Tamil Nadu in July end, the last time this happened was in July 2007. So almost after 13 years, we might see UAC rains in July for Chennai. The most interesting part even though UAC will be there we get only rains from land side and this time the UAC is perfectly located such that clouds are moving from sea side in July into Chennai city that too in SWM. Earlier Delta belt got smashed with clouds moving from sea side like north east monsoon. So an exciting day for Chennai with people getting awake to monsoon like day with morning rains.

Thanks to UAC, it always gives plenty of rains to Interior TN, so another active day for Tamil Nadu from  thunderstorms and also monsoon rains in ghat areas. Its rare event, lets enjoy it. And Meena is going to break a historic 200 event rainfall for July. We might never see a month like this again for centuries to come.

Monsoon winds gets activated with UAC pulling winds – Heavy rains

With UAC near Tamil Nadu this pulls the monsoon winds other side and Kerala and ghats in Valparai, Nilgiris, Theni, Kanyakumari and Nellai ghats will all get heavy rains. Particularly Idukki, Valparai, Wayanad, Thrissur, Eranakulam will all have chance of very heavy rains to extreme rains.

Meenambakkam July record for 300 mm in July – 9 mm required to cross 300 mm for 1st time in 200 years

Chennai 1818 July – 299 mm
Chennai (Meenambakkam) 2020 July – 291 mm (till 5.30 am on 29.07.2020)
Chennai (Nungambakkam) 2001 July – 270 mm
Chennai (Meenambakkam) 1954 July – 266 mm

Clouds moving from Sea into City during SWM
———–
September 9, 2017
June 10, 2014

UAC rains in Chennai
—————
24hrs rainfall

Sep 19, 2019 (104 mm in Nuga and 95 mm in Meena)
Sept 9, 2017
June 10, 2014 (52 mm in Meena)
Sep 09, 2013
Aug 14, 2013
Aug 20, 2010
July 29, 2007

Day rains in Chennai in last 10 years
—————————-
(criteria min 10 mm should be recorded after 8.30 am)

Rainfall figures are data after 8.30 am to 11.30 am / 2.30 pm

19th July, 2020 (15 mm in Meenambakkam)
18th August, 2019 (14 mm in Nungambakkam and 27 mm in Meenambakkam)
17th August, 2019 (12 mm in Meenambakkam)
22nd July, 2019
13th August 2018
10th June, 2014
September 01, 2017
September 11, 2013
August 14, 2013 (32 mm in Nunga and 20 mm in Meena)
September 29, 2011

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All India and State wise Toppers of Rainfall in 20 days of monsoon from 01.06.20 to 20.06.20

June 22, 2020

All India Rainfall Toppers from 01-06-2020 to ending till 8.30 am on 20-06-2020

Min (1000 mm)

  1. Amboli, Maharashtra – 1636
  2. Mawsynaram, Meghalaya – 1602
  3. Aluru, Karnataka – 1354
  4. Vendse, Karnataka – 1284
  5. Patgaon, Maharashtra – 1271
  6. Malvan, Maharashtra – 1244
  7. Gaganbawada, Maharashtra – 1210
  8. Pernem, Goa – 1186
  9. RKM Cherrapunji, Meghalaya – 1180
  10. Dajipur, Maharashtra – 1179
  11. Sawantwadi, Maharashtra – 1143
  12. Vadakara, Kerala – 1137
  13. Karwar, Karnataka – 1129
  14. Kumbhi Dam, Maharashtra – 1087
  15. Savantvada, Karnataka – 1083
  16. Ankola, Karnataka – 1080
  17. Belikere, Karnataka – 1073
  18. Vaibhavwadi, Maharashtra – 1048
  19. Kitwade, Maharashtra – 1044
  20. Cherrapunji, Meghalaya – 1033
  21. Rajapur, Maharashtra – 1030
  22. Gokarna, Karnataka – 1019
  23. Revachiwadi, Maharashtra – 1007
  24. Patharpunj, Maharashtra – 1002
  25. Kumta, Karnataka – 1000

Maharashtra SWM Toppers from 01.06.20 to 20.06.2020

(min 1000 mm)

  1. Amboli – 1636
  2. Patgaon – 1271
  3. Malvan – 1244
  4. Gaganbawada – 1210
  5. Dajipur – 1179
  6. Sawantwadi – 1143
  7. Kumbhi Dam – 1087
  8. Vaibhavwadi – 1048
  9. Kitwade – 1044
  10. Rajapur – 1030
  11. Revachiwadi – 1007
  12. Patharpunj – 1002

Karnatata SWM Toppers from 01.06.20 to 20.06.2020

(min 900mm)

  1. Aluru, Udupi – 1354
  2. Vendse, Udupi – 1284
  3. Savantvada, Uttar Kannada – 1083
  4. Ankola, Uttar Kannada – 1080
  5. Belikere, Uttar Kannada – 1073
  6. Gokarna, Uttar Kannada – 1019
  7. Kumta, Uttar Kannada – 1000
  8. Albadi, Udupi – 969
  9. Avershe, Udupi – 951
  10. Hulikal, Shimoga – 946
  11. Mulikar, Udupi – 940
  12. Kollur, Udupi – 933
  13. Talacauvery, Kodagu – 929
  14. Ampar, Udupi – 926
  15. Bandal, Uttar Kannada – 924
  16. Kota, Udupi – 914
  17. Akheti, Uttar Kannada – 911

North East India SWM Toppers from 01.06.20 to 20.06.2020

(min 500 mm)

  1. Mawsynaram, Meghalaya – 1602
  2. RKM Cherrapunji, Meghalaya – 1180
  3. Cherrapunji, Meghalaya – 1033
  4. Mathanguri, Assam – 687
  5. Khliehriat, Meghalaya – 668
  6. Tulargram, Assam – 611
  7. Shipgyer, Sikkim – 567
  8. Sankalang, Sikkim – 551
  9. Haora, Tripura – 545
  10. Kamalapur, Tripura – 520
  11. Annapurnaghat, Assam – 517
  12. Anipur, Assam – 513
  13. Paigong, Sikkim – 505
  14. Badarpurghat, Assam – 500
  15. Karimganj, Assam – 500

Goa SWM Toppers from 01.06.20 to 20.06.2020

(min 750 mm)

  1. Pernem – 1186
  2. Mormugao – 938
  3. Panaji – 932
  4. Canacona – 916
  5. Dabolim – 896
  6. Sanquelim – 885
  7. Quepem – 812
  8. Sanguem – 787
  9. Margao – 775

Kerala SWM Toppers from 01.06.20 to 20.06.2020

(min 500 mm)

  1. Vadakara, Kozhikode – 1137
  2. Kannur, Kannur – 869
  3. Kuttiyadi, Kozhikode – 767
  4. Taliparamba, Kannur – 674
  5. Kudulu, Kasargod – 674
  6. Quilandy, Kozhikode – 662
  7. Thalserry, Kannur – 580
  8. Irukkur, Kannur – 547
  9. Perumannu, Kannur – 509
  10. Kozhikode, Kozhikode – 504

West Bengal SWM Toppers from 01.06.20 to 20.06.2020

(min 500 mm)

  1. Nagrakata 546
  2. Chepan – 545
  3. Buxaduar – 535
  4. Neora- 511
  5. Barobisha – 500

Odisha SWM Toppers from 01.06.20 to 21.06.2020

(min 400 mm)

  1. Machulpali – 607
  2. Sundergarh – 564
  3. Kuchinda – 462
  4. Korba – 440
  5. Laikera – 423
  6. Jharsuguda – 419
  7. Deogaon – 415

Tamil Nadu SWM Toppers from 01.06.20 to 20.06.2020

(min 200 mm)

  1. Devala, Nilgiris – 597
  2. Pandalur, Nilgiris – 529
  3. Periyakallar (Valparai PTO), Coimbatore – 370
  4. Sholayar Dam, Coimbatore – 360
  5. Chinnakallar, Coimbatore – 303
  6. Kuzhithurai, Kanyakumari – 295
  7. Eraniel, Kanyakumari – 282
  8. Cincona, Coimbatore – 274
  9. Upper Kodayar, Kanyakumari – 273
  10. Chittar 1, Kanyakumari -265
  11. Lower Kodayar, Kanyakumari – 257
  12. Gudalur, Nilgiris – 243
  13. Manomboly, Coimbatore – 224
  14. Chittar 2, Kanyakumari – 223
  15. Padanthorai, Nilgiris – 200
  16. Valparai PAP, Coimbatore – 200

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One of the best days for dry belts of Tiruppur and Coimbatore.

April 29, 2020

One of the best days for dry belts of Tiruppur and Coimbatore. Two more days the Thunderstorms are expected to continue in Tamil Nadu and then less than normal and dry days for some days. But may month as a whole looks good for TN interiors with active thunderstorms seen throughout the month.

Today to Tomorrow morning
——————
Today to Tomorrow morning interpretation, action to shift to South TN and with so much rains in North Interior TN, there will be some break in rains tonight. Sivaganga, Pudukottai and Ramanthapuram and even Thanjavur which have missed rains so far have good chance to grasp some rains today/tomorrow from this spell.

KTC
——
Tomorrow the last chance exist, but that too feeble one with most of the convergence shifted to Pondy to Delta belt. After that we go in for break in rains, which means there will rains at isolated districts not like the list put up below.

Cyclone ? Pushed back further
——–
From May 1st week earlier the cyclone landfall has been pushed to May 2nd week. Further, MJO is moving away from our basin, Even if a cyclone forms…Climatology mostly favours Bangladesh and Burma. High chance of it going to Burma and Bangladesh than anywhere else. Last year Fani was rare 1 in 100 year odisha landfall because Odisha rarely gets May cyclone.

You can see ECMWF changed the location to Burma again and by 2.00 pm windy app will be updating the cyclone it earlier showed close to Odisha to Burma now. So this may not be final track too. Coming to GFS which was spinning monster for two weeks has been spinning a dummy past two days. So lets wait for cyclone to form first and then take a call.

Rainfall in Tamil Nadu, ending on 29.04.2020, some district data are missing due to lockdown.
============
in mm (min 10 mm)

Dharmapuri
———–
Palacode Mill – 94
Dharmapuri – 38
Palacode – 32
Palacode North – 32
Dharmapuri PTO – 10

Tiruppur
———
Tiruppur Collectorate – 87
Kangayam – 64
Tiruppur – 60
Madathukulam – 23
Amaravathi Dam – 23
Palladam – 21
Tiruppur South – 16
Kundalam – 15
Avinashi – 14
Vellakovil – 13
Mulanur – 10
Udumalpet – 10

Coimbatore
———–
Coimbatore South – 58
Madukkarai – 48
Peelamedu – 38
Pollachi – 30
TNAU – 19
Periyanaickenpalayam – 15
Cincona – 14
Alaiyar Dam – 13
Sulur – 13
Sholayar Dam – 12
Mettupalayam – 12

Kanyakumari
———–
Nagercoil – 52
Tirupathisaram – 21
Chittar I – 18
Chittar II – 12
Perunchani – 11
Puthan Dam – 11
Suralacode – 10
Lower Kodayar – 10

Trichy
——-
Samayapuram – 45
Devimangalam – 18
Thathiengarpet – 14
Trichy Town – 13
Musri – 10
Golden Rock – 10
Trichy Junction – 10

Krishnagiri
———–
Penucondapuram – 43
Denkanikottai – 19
Thally – 10
Pochampalli – 10

Perambalur
——–
Chettikulam – 42
Perambalur – 36
Padalur – 12
Krishnapuram – 10

Pudukottai
———-
Manamelkudi – 39
Kattumavadi – 25

Ranipet
——-
Sholingur – 36
Wallajah – 11
Arcot – 10

Vellore
——-
Vellore – 35
Katpadi – 29
Ponnai Dam – 13
Melalathur – 11

Nilgiris
———
Upper Bhavani – 35
Lower Glenmorgan – 18
Kinnakorai – 16
Ketti – 11
Avalanche – 11
Glenmorgan – 10
Emerald – 10
Devala – 10

Tirupattur
——
Ambur – 30
Vadapathupattu – 26
Natrampalli – 10

Theni
——
Vaigai Dam – 29
Sothuparai – 23
Manjalar – 22
Veerapandi – 21
Periyakulam – 21
Andipatti – 12

Others
——–
Tiruttani, Tiruvallur – 29
Sivagiri, Thenkasi – 24
Adiramapattinam, Thanjavur – 22
Mettur, Salem – 20
Arani, Tiruvannamalai – 17
Pamban, Ramanathapuram – 17
Rameswaram, Ramanathapuram – 10
Thoockanaickenpalayam, Erode – 10

Kerala Rainfall on 29.04.2020. One of the best day without a doubt. Massive numbers for Thunderstorms.
==========
in mm (min 20 mm)

Thrissur
———–
Enamackel – 159
Lower Sholayar – 33
Vadakkancherry – 32
Kunnamkulam – 20

Others
———-
Perinthalmanna, Malappuram – 138
Vadakara, Kozhikode – 45
Kochi (CIAL), Eranakulam – 28
Kurudamannil, Pathanmthitta – 28
Kollam, Kollam – 20

Trivandrum
———–
Trivandrum – 76
Peringamala – 29
Neyyattinkara – 29
Varkala – 22
Perumkadavilla – 22
Nedumangad – 21

Alappuzha
————-
Mavelikkara – 74
Kayamkulam Agri – 34
Kayamkulam – 24
Mancompu – 20

Kottayam
————-
Vaikom – 68
Kanjirappally – 24
Kottayam – 22

Palakkad,
———–
Ottappalam – 64
Chittur – 64
Kollengode – 57
Alathur – 46
Thrithala – 28
Palakkad – 22

Idukki
——–
Peermade – 39
Thodupuzha – 30
Idukki – 30

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