GOVERNMENT OF INDIA

BHARAT MAUSAM VIGYAN VIBHAG

INDIA METEOROLOGICAL DEPARTMENT

REGIONAL METEOROLOGICAL CENTRE, CHENNAI-600 006

WEEKLY WEATHER REPORT FOR TAMILNADU AND PUDUCHERRY FOR

THE WEEK ENDING  31ST DECEMBER  2014  /  10TH PAUSA, 1936 (SAKA)

SUMMARY OF WEATHER

 

Week’s Rainfall:

Excess:            Chennai, Coimbatore, Cuddalore, Kancheepuram, Kanyakumari, Nagapattinam, Tiruppur and Tiruvallur districts.

Normal:            Thanjavur, Tiruvarur, Toothukudi districts and Karaikal.

Deficient:         Ariyalur, Karur, Madurai, Nilgiris, Ramanathapuram, Theni, Tirunelveli, Tiruchirapalli, Villupuram and Virudhunagar districts.

Scanty:             Dharmapuri, Dindigul, Erode, Namakkal, Perambalur, Pudukkottai, Salem, Sivaganga, Tiruvannamalai, Vellore districts and Puducherry. 

No Rain:          Krishnagiri district.

 

The chief amounts of rainfall recorded in Centimetres are:

 

28/12/2014:Vedaranyam (Nagapattinam Dist) 2, Karaikal (Karaikal Dist), Nagapattinam (Nagapattinam Dist), Pamban (Ramanathapuram Dist) 1 each.

 

29/12/2014: Trangambadi(or)tranqueb (Nagapattinam Dist), Vedaranyam (Nagapattinam Dist) 7 each, Thuckalay (Kanyakumari Dist), Kodavasal (Tiruvarur Dist) 5 each, Tiruvarur (Tiruvarur Dist) 4, Thiruthuraipoondi (Tiruvarur Dist), Sirkali (Nagapattinam Dist), NeeDamangalam (Tiruvarur Dist), Pandavaiyar head (Tiruvarur Dist), Parangipettai (Cuddalore Dist), Mannargudi (Tiruvarur Dist), Anaikaranchatram(KolliDam (Nagapattinam Dist), Valangaiman (Tiruvarur Dist), DGP office (Chennai Dist) 3 each, K.m.koil (Cuddalore Dist), Nagapattinam (Nagapattinam Dist), Madukkur (Thanjavur Dist), Kumbakonam (Thanjavur Dist), Mayiladuthurai (Nagapattinam Dist), ChiDambaram (Cuddalore Dist), Srimushnam (Cuddalore Dist), Thiruvidaimaruthur (Thanjavur Dist), Kelambakkam (Kancheepuram Dist), Muthupet (Tiruvarur Dist), Cuddalore (Cuddalore Dist), Satyabama uty arg (Kancheepuram Dist), Taramani arg (Kancheepuram Dist), Aduthurai AWS (Thanjavur Dist), Adirampatnam (Thanjavur Dist), Chennai(N) (Chennai Dist), Eraniel (Kanyakumari Dist), Karaikal (Karaikal Dist), Anna University (Chennai Dist) 2 each, Mahabalipuram (Kancheepuram Dist), Papanasam (Thanjavur Dist), Chennai AP (Kancheepuram Dist), Nannilam (Tiruvarur Dist), Anna uty arg (Chennai Dist), Kvk kattukuppam arg (Kancheepuram Dist), Kolapakkam arg (Kancheepuram Dist), Pattukottai (Thanjavur Dist), JayamkonDam (Ariyalur Dist), Neyveli AWS (Cuddalore Dist), Sethiathope (Cuddalore Dist), Kuzhithurai (Kanyakumari Dist), Vallam (Thanjavur Dist), Madavaram AWS (Tiruvallur Dist), Tiruvaiyaru (Thanjavur Dist), Thanjavur (Thanjavur Dist), Hvf avadi arg (Tiruvallur Dist), Puzhal arg (Tiruvallur Dist), Chembarabakkam (Tiruvallur Dist), Rameswaram (Ramanathapuram Dist), Tiruchirappalli AP (Trichy Dist), Grand anaicut (Thanjavur Dist), Alangudi (Pudukkottai Dist), Peravurani (Thanjavur Dist), Vanur (Villupuram Dist), Orthanad (Thanjavur Dist), Virudachalam (Cuddalore Dist), Tozhudur (Cuddalore Dist), Tambaram (Kancheepuram Dist), Gandarvakottai (Pudukkottai Dist), Manamelkudi (Pudukkottai Dist), Cholavaram (Tiruvallur Dist), Ennore AWS (Tiruvallur Dist) 1 each.

 

30/12/2014: Ennore AWS (Tiruvallur Dist), Kelambakkam (Kancheepuram Dist) 10 each, Satyabama uty arg (Kancheepuram Dist), DGP office (Chennai Dist), Madavaram AWS (Tiruvallur Dist), Chennai(N) (Chennai Dist), Anna University (Chennai Dist), Taramani arg (Kancheepuram Dist) 9 each, Puzhal arg (Tiruvallur Dist), Anna uty arg (Chennai Dist), Red hills (Tiruvallur Dist) 8 each, Chennai AP (Kancheepuram Dist), Mahabalipuram (Kancheepuram Dist) 7 each, Tambaram (Kancheepuram Dist), Kolapakkam arg (Kancheepuram Dist) 6 each, Chengalpattu (Kancheepuram Dist), Ponneri (Tiruvallur Dist), Tirumangalam (Madurai Dist), Chembarabakkam (Tiruvallur Dist), Poonamalle arg (Tiruvallur Dist) 5 each, Cholavaram (Tiruvallur Dist), Kvk kattukuppam arg (Kancheepuram Dist), G Bazar (Nilgiris Dist) 4 each, Sriperumbudur (Kancheepuram Dist), Sivagiri (Tirunelveli Dist), Ambasamudram (Tirunelveli Dist), Trangambadi(or)tranqueb (Nagapattinam Dist) 3 each, Poonamallee (Tiruvallur Dist), Srivaikuntam (Toothukudi Dist), Kamudhi (Ramanathapuram Dist), Parangipettai (Cuddalore Dist), Thamaraipakkam (Tiruvallur Dist), Tiruvallur (Tiruvallur Dist), Satankulam (Toothukudi Dist), Sivakasi (Virudhunagar Dist), Srimushnam (Cuddalore Dist), Karaikal (Karaikal Dist) 2 each, Cheyyur (Kancheepuram Dist), Poondi (Tiruvallur Dist), ChiDambaram (Cuddalore Dist), Palayamkottai (Tirunelveli Dist), Kovilpatti    AWS (Toothukudi Dist), Thiruchuzhi (Virudhunagar Dist), Vanur (Villupuram Dist), Nagapattinam (Nagapattinam Dist), Vedaranyam (Nagapattinam Dist), Coimbatore AWS (Coimbatore Dist), Maduranthagam (Kancheepuram Dist), Naduvattam (Nilgiris Dist), Thiruvalangadu (Tiruvallur Dist), Sankarankoil (Tirunelveli Dist), Aranmanaipudur (Theni Dist), Tindivanam   nicra (Villupuram Dist), Cheranmahadevi (Tirunelveli Dist), K.m.koil (Cuddalore Dist), Anaikaranchatram(KolliDam (Nagapattinam Dist), Avinasi (Tiruppur Dist), Tindivanam (Villupuram Dist), Marakkanam (Villupuram Dist), Vandavasi (Tiruvannamalai Dist), Tiruppur (Tiruppur Dist), Udumalpet (Tiruppur Dist), Karur (Karur Dist), Panruti (Cuddalore Dist) 1 each.

 

31/12/2014: Kalugumalai (Toothukudi Dist) 5, Pollachi (Coimbatore Dist), Mylaudy (Kanyakumari Dist) 4 each, Kamudhi (Ramanathapuram Dist), Nanguneri (Tirunelveli Dist) 3 each, Ottapadiram (Toothukudi Dist), Peravurani (Thanjavur Dist), Rajapalayam (Virudhunagar Dist) 2 each, Sivagiri (Tirunelveli Dist), Kovilpatti    AWS (Toothukudi Dist), Kayathar arg (Toothukudi Dist), Kovilpatti (Toothukudi Dist), Udumalpet (Tiruppur Dist) 1 each.

 

 

Season’s Rainfall for the period from 01.10.2014 to 31.12.2014:

Excess:            Erode, Nilgiris, Ramanathapuram, Tirunelveli and Toothukudi districts.

Normal:            Chennai,  Coimbatore, Cuddalore, Dharmapuri, Dindigul,  Kanyakumari, Karur, Krishnagiri, Nagapattinam,  Namakkal,   Pudukkotai, Salem, Sivaganga, Thanjavur, Theni, Tiruppur, Tiruvallur, Tiruvarur, Villupuram districts and Karaikal.

Deficient:         Ariyalur, Kancheepuram, Madurai, Perambalur, Tiruvannamalai, Tiruchirapalli, Vellore, Virudhunagar districts and Puducherry.     

 

 

Chief synoptic features and its associated weather:    

            Last week’s trough of low pressure area over equatorial Indian Ocean and adjoining Srilanka and southwest Bay of Bengal persisted on 25th and 26th. It became a well marked low pressure area over southwest Bay off Srilanka coast on 26th and persisted on 27th , 28th with associated upper air cyclonic circulation extending upto mid tropospheric  level.

            Another trough of low pressure was seen over southeast Bay and neighbourhood on 26th and moved westwards on 27th. The well marked low pressure area over southwest Bay off Srilanka coast was seen over southwest Bay off North Srilanka-Tamil Nadu coast on 29th ; over southwest Bay and adjoining westcentral Bay off South Andhra Pradesh  and North Tamil Nadu coast on 30th and over westcentral Bay on 31st  with associated upper air cyclonic circulation extending upto mid tropospheric  level. 

 

Temperature: The minimum temperature were below normal at one or two places over interior Tamil Nadu from 25th to 27th . They were markedly above normal at one or two places over north Tamil Nadu and above normal at a few places over rest Tamil Nadu on 28th. They were above normal at one or two places over south Tamil Nadu on 30th , north Tamil Nadu on 31st and were nearly normal on 29th.       

 

 

Rainfall: Rainfall occurred at a few places over the state on 29th, 30th and at isolated places on 28th, 31st . Dry weather prevailed on remaining days of the week.

 

Regional Meteorological Centre,                                                                Dr. S. R. RAMANAN

6, College Road, Chennai-6.                                                                SCIENTIST ‘E’ / DIRECTOR

Date: 31.12.2014                                                           for Deputy Director General of Meteorology 

 

 

RAINFALL STATEMENT

 

 

Rainfall for the week ending

31st December 2014

Seasonal rainfall for the period from 01.10.2014 to 31.12.2014

Districts

Actual

(mm)

Normal (mm)

Departure (%)

Actual

(mm)

Normal

(mm)

Departure (%)

Ariyalur

7.0

13.6

-49

360.9

545.5

-34

Chennai

105.2

23.2

354

719.7

789.9

-9

Coimbatore

9.8

4.8

103

311.6

328.9

-5

Cuddalore

23.1

18.8

23

695.5

697.8

0

Dharmapuri

1.0

3.8

-73

346.9

330.1

5

Dindigul

1.9

13.1

-85

445.6

436.4

2

Erode

0.1

4.0

-97

395.9

314.6

26

Kancheepuram

59.0

13.6

334

438.2

641.8

-32

Kanyakumari

12.9

7.9

63

495.0

496.4

0

Karaikal

46.7

48.7

-4

907.5

1048.5

-13

Karur

3.1

6.0

-48

258.8

314.7

-18

Krishnagiri

0.0

2.0

-100

279.6

289.4

-3

Madurai

5.4

9.4

-43

323.4

419.1

-23

Nagapattinam

59.6

40.3

48

1016.2

941.0

8

Namakkal

0.6

2.7

-79

251.5

291.6

-14

Nilgiris

5.7

11.7

-52

580.9

478.2

21

Perambalur

3.0

8.9

-66

346.0

440.9

-22

Pudukottai

4.1

13.7

-70

399.6

406.2

-2

Ramanathapuram

7.9

18.9

-58

611.4

491.7

24

Salem

0.8

4.1

-80

332.7

370.5

-10

Sivaganga

0.9

14.2

-94

468.7

422.7

11

Thanjavur

16.8

18.5

-9

549.1

550.3

0

Theni

3.2

6.3

-49

398.6

357.9

11

Tirunelveli

12.7

17.4

-27

847.5

467.2

81

Tiruppur

8.1

4.9

64

343.5

314.3

9

Tiruvallur

45.3

8.7

421

487.0

589.3

-17

Tiruvannamalai

2.4

7.9

-70

248.8

446.5

-44

Tiruvarur

33.3

30.5

9

752.6

719.1

5

Toothukudi

14.1

14.1

0

585.5

427.0

37

Tiruchirapalli

4.8

9.0

-47

259.1

391.5

-34

Vellore

1.7

4.9

-65

183.5

348.7

-47

Villupuram

7.1

13.0

-45

414.0

499.1

-17

Virudhunagar

5.8

10.3

-44

308.1

419.0

-26

Puducherry

4.5

22.7

-80

666.7

843.1

-21

Tamilnadu

10.3

10.8

-5

430.3

440.4

-2

Tamilnadu and

Puducherry

10.3

10.9

-5

431.4

442.0

-2

 

           

LEGEND:

Excess: 20% or more

Normal:   +19% to –19%

Deficient: -20% to –59%

Scanty: -60% to  -99%

No Rain:  -100 %

In calculation of excess, deficits and their  percentage, rainfall figures are taken to  0.1  mm.  (*) Rainfall less than 0.1 mm.

 

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