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  30TH  JULY  2014  / 08TH  SHRAVANA, 1936 (SAKA)

SUMMARY OF WEATHER

 

Week’s rainfall

Excess:           Coimbatore, Nilgiris and Theni districts.

 

Normal:          Puducherry. 

 

Deficient:        Cuddalore and Nagapattinam districts.

 

Scanty:         Chennai, Dharmapuri, Dindigul, Erode, Kancheepuram, Kanyakumari,  Krishnagiri, Madurai, Namakkal, Pudukottai, Ramanathapuram, Salem,                        Sivaganga, Thanjavur, Tirunelveli, Tiruppur, Tiruvallur, Tiruvannamalai, Vellore and Villupuram districts.

 

No Rain:         Ariyalur, Karur, Perambalur, Tiruvarur, Toothukudi, Tiruchirapalli, Virudhunagar districts and Karaikal.

 

The Chief amounts of rainfall recorded in centimeters are:

24/07/2014:Naduvattam (Nilgiris Dist), Devala (Nilgiris Dist) 9 each, Valparai pto  (Coimbatore Dist) 6, Valparai taluk office (Coimbatore Dist), G Bazar (Nilgiris Dist) 5 each, Uthagamandalam AWS (Nilgiris Dist) 3, Uthagamandalam (Nilgiris Dist), Ketti (Nilgiris Dist), Thali (Krishnagiri Dist), K bridge (Nilgiris Dist) 2 each, Pollachi (Coimbatore Dist) 1.

 

25/07/2014: Valparai pto (Coimbatore Dist) 3, Naduvattam (Nilgiris Dist), Devala (Nilgiris Dist) 2 each, Periyar (Theni Dist), Valparai taluk office (Coimbatore Dist), G Bazar (Nilgiris Dist), Thamaraipakkam (Tiruvallur Dist) 1 each.

 

26/07/2014: Devala (Nilgiris Dist), Valparai pto (Coimbatore Dist) 3 each, Naduvattam (Nilgiris Dist), Karaikudi (Sivaganga Dist), Valparai taluk office (Coimbatore Dist) 2 each, G Bazar (Nilgiris Dist) 1.

 

27/07/2014: Valparai pto (Coimbatore Dist) 4, Pondicherry (Puducherry Dist) 3, ChiDambaram AWS (Cuddalore Dist), Marakkanam (Villupuram Dist), Valparai taluk office (Coimbatore Dist), K.m.koil (Cuddalore Dist), Naduvattam (Nilgiris Dist), Vandavasi (Tiruvannamalai Dist), Pochampalli (Krishnagiri Dist) 2 each, Anaikaranchatram(KolliDam (Nagapattinam Dist), Kelambakkam (Kancheepuram Dist), Paiyur AWS (Krishnagiri Dist), Uthangarai (Krishnagiri Dist), Tindivanam (Villupuram Dist), Periyar (Theni Dist), G Bazar (Nilgiris Dist), Gingee (Villupuram Dist), Alangayam (Vellore Dist), Pollachi (Coimbatore Dist), Uttamapalayam (Theni Dist) 1 each.

 

28/07/2014: Pollachi (Coimbatore Dist), Valparai pto (Coimbatore Dist) 3 each, Neyveli AWS (Cuddalore Dist), Parangipettai (Cuddalore Dist), Coimbatore south (Coimbatore Dist), Anaikaranchatram(KolliDam (Nagapattinam Dist) 2 each, ChiDambaram AWS (Cuddalore Dist), Arantangi (Pudukkottai Dist), Valparai taluk office (Coimbatore Dist), K.m.koil (Cuddalore Dist), Sirkali (Nagapattinam Dist), Marakkanam (Villupuram Dist), Thammampatty (Salem Dist), Periyar (Theni Dist), Rasipuram (Namakkal Dist), Mahabalipuram (Kancheepuram Dist) 1 each.

 

29/07/2014: Pollachi (Coimbatore Dist), Valparai pto (Coimbatore Dist) 3 each, Valparai taluk office (Coimbatore Dist), Periyar (Theni Dist) 2 each.

 

30/07/2014: Devala (Nilgiris Dist) 6, Naduvattam (Nilgiris Dist), G Bazar (Nilgiris Dist), Valparai taluk office (Coimbatore Dist) 2 each, Valparai pto (Coimbatore Dist), Chinnakalar (Coimbatore Dist), Cholavaram (Tiruvallur Dist), Uthagamandalam AWS (Nilgiris Dist), DGP office (Chennai Dist), Chennai(N) (Chennai Dist) 1 each.

Season’s rainfall for the period from 01.06.2014 to 30.07.2014: 

Excess:           Coimbatore, Theni,  Tiruvarur districts, Karaikal and Puducherry.

 

Normal:          Chennai, Dharmapuri, Erode, Kancheepuram,  Krishnagiri, Nagapattinam,  Nilgiris, Perambalur,    Tiruvallur, Tiruvannamalai,

                      Vellore and Villupuram districts. 

 

Deficient:        Ariyalur, Cuddalore, Dindigul, Karur, Madurai, Namakkal, Salem, Thanjavur,   Toothukudi and Virudhunagar districts.

 

Scanty:            Kanyakumari, Pudukkottai, Ramanathapuram, Sivaganga,   Tirunelveli Tiruppur and Tiruchirapalli  districts.

 

 

Chief synoptic features and its associated weather:           

 

            Under the influence of an upper air cyclonic circulation over Northwest Bay and neighbourhood from 24th to 26th  , a low pressure area formed over North Bay of Bengal and neighbourhood on 27th with associated upper air cyclonic circulation extended upto 7.6 Kilometres above sea level and tilting southwestwards with height on 28th  and it became a well marked low over Northwest Bay off Odisha coast with associated upper air cyclonic circulation and extended upto 7.6 Kilometres above sea level on 29th and it persisted on 30th .

 

 

Rainfall:  Rainfall occurred at isolated  places over the State during the week. 

 

 

 

 

Regional Meteorological Centre,                                                              (Dr. S.R.RAMANAN) 

College Road, Chennai-6.                                                                                   SCIENTIST ‘E’

Date: 30.07.2014                                                  for Deputy Director General of Meteorology 

 

 

                                                                  RAINFALL STATEMENT

 

 

 

Rainfall for the week ending 

30th  July 2014

Seasonal rainfall for the period from 01.06.2014  to 30.07.2014

Districts

Actual

(mm)

Normal

(mm)

Departure (%)

Actual

(mm)

Normal

(mm)

Departure (%)

Ariyalur

0.0

22.0

-100

89.5

123.2

-27

Chennai

11.8

30.1

-61

188.9

169.5

11

Coimbatore

51.7

11.9

335

331.9

79.2

319

Cuddalore

12.2

22.2

-45

93.3

121.1

-23

Dharmapuri

0.9

21.1

-96

104.4

129.3

-19

Dindigul

1.5

13.8

-89

45.6

95.5

-52

Erode

0.5

9.3

-95

62.1

65.3

-5

Kancheepuram

3.5

27.8

-87

168.5

174.5

-3

Kanyakumari

2.0

20.2

-90

76.9

296.4

-74

Karaikal

0.0

21.4

-100

157.7

108.9

45

Karur

0.0

10.4

-100

24.4

54.7

-55

Krishnagiri

6.6

20.2

-67

116.7

129.8

-10

Madurai

0.1

18.4

-99

48.5

113.4

-57

Nagapattinam

9.1

17.4

-48

86.6

95.6

-9

Namakkal

1.1

17.9

-94

70.5

110.2

-36

Nilgiris

68.5

56.0

22

412.2

423.3

-3

Perambalur

0.0

16.1

-100

71.1

80.9

-12

Pudukottai

1.5

19.6

-92

36.8

122.0

-70

Ramanathapuram

0.1

10.4

-99

0.2

46.1

-99

Salem

1.6

24.1

-93

99.3

159.1

-38

Sivaganga

4.3

22.0

-80

37.1

112.6

-67

Thanjavur

0.1

17.5

-99

59.2

103.7

-43

Theni

10.0

8.0

25

100.7

54.3

86

Tirunelveli

1.9

8.4

-78

22.6

76.7

-71

Tiruppur

0.2

6.6

-96

6.9

48.7

-86

Tiruvallur

5.6

26.3

-79

158.6

175.7

-10

Tiruvannamalai

3.8

22.8

-84

136.3

155.1

-12

Tiruvarur

0.0

18.6

-100

121.8

96.3

27

Toothukudi

0.0

6.0

-100

9.8

22.7

-57

Tiruchirapalli

0.0

13.4

-100

26.6

83.9

-68

Vellore

2.1

27.3

-92

163.6

169.2

-3

Villupuram

7.5

26.8

-72

139.5

131.5

6

Virudhunagar

0.0

10.2

-100

33.3

57.6

-42

Puducherry

31.8

31.4

1

187.3

128.9

45

Tamilnadu

5.7

18.0

-68

92.7

113.9

-19

Tamilnadu and

Puducherry

5.8

18.1

-68

93.0

113.9

-18

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Excess: 20% or more,  Normal:   +19% to –19% , Deficient: -20% to –59%

Scanty: -60% to  -99%  and  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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