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 1ST FEBRUARY 2012 / 12TH MAGHA, 1933 (SAKA)
SUMMARY OF WEATHER
Week’s Rainfall :
Excess: Ariyalur, Chennai, Cuddalore, Karur, Tiruvallur, Tiruchirapalli districts and Karaikal.
Normal: Coimbatore, Kanchipuram and Nagapattinam districts.
Deficient: Dindigul, Ramanathapuram, Thanjavur districts and Puducherry.
Scanty: Nilgiris, Sivaganga, Tirunelveli and Tiruvarur districts.
No Rain: Dharmapuri, Erode, Kanyakumari, Krishnagiri, Madurai, Namakkal, Perambalur, Pudukottai, Salem, Theni, Tirupur, Tiruvannamalai, Toothukudi, Vellore, Villupuram and Virudhunagar districts.
The chief amounts of rainfall recorded in Centimetres are:
28.01.12: Sivagiri (dist Tirunelveli) 1.
31.01.12: Jayamkondam (dist Ariyalur) 3, Sirkali (dist Nagapatinam) 2, Ponneri (dist Tiruvallur) 2, Anna University (dist Chennai) 2, Sethiyathope Anaicut (dist Cuddalore) 2, Chennai Meenambakkam 2 and Kattumannarkoil (dist Cuddalore) 1, Pullambadi (dist Tiruchirapalli) 1, Ariyalur 1 and Chidambaram (dist Cuddalore) 1.
01.02.12: Grand Anaicut (Thanjavur) 1.
Season’s Rainfall for the period from 01.01.12 to 01.02.12:
Excess: Kanyakumari, Theni and Virudhunagar districts.
Normal: Tirunelveli district.
Deficient: Ariyalur, Chennai, Kanchipuram, Madurai, Nilgiris, Tiruvallur districts, Karaikal and Puducherry.
Scanty: Coimbatore, Cuddalore, Dindigul, Erode, Karur, Nagapattinam, Namakkal, Pudukottai, Ramanathapuram, Sivaganga, Thanjavur, Tirupur, Tiruchirapalli, Tiruvarur, Toothukudi, Vellore and Villupuram districts.
No Rain: Dharmapuri, Krishnagiri, Perambalur, Salem and Tiruvannamalai districts.
Chief Synoptic Features and its associated weather:
Mainly dry air prevailed over the state from 26th to 30th January. An upper air cyclonic circulation/ trough lay over southwest Bay of Bengal off Srilanka coast and extended upto 2.1 Kilometres above sea level on 31st January and 1st February 2012.
The minimum temperatures were appreciably below normal at one or two places over North Tamilnadu on 26th , 27th, 30th January; appreciably above normal at one or two places over North Tamilnadu on 28th, 29th , 31st January, 1st February and remained generally normal over rest of the state during the week.
Rainfall: Rainfall occurred at isolated places over the state on 27th, 28th, 30th, 31st January and 1st February. Mainly dry weather prevailed on 29th and dry weather on 26th January.
Regional Meteorological Centre, DR. S. R. RAMANAN
6, College Road, Chennai-6. SCIENTIST ‘E’
Date: 03.02.12 for Deputy Director General of Meteorology
RAINFALL STATEMENT
|
|
Rainfall for the week ending 1st February 2012 |
Seasonal rainfall for the period from 01.01.2012 to 01.02.2012 |
||||
|
Districts |
Actual (mm) |
Normal (mm) |
Departure (%) |
Actual (mm) |
Normal (mm) |
Departure (%) |
|
Ariyalur |
10.5 |
1.3 |
708 |
10.5 |
21.2 |
-50 |
|
Chennai |
5.9 |
2.4 |
147 |
17.0 |
22.1 |
-23 |
|
Coimbatore |
0.6 |
0.7 |
-11 |
1.7 |
8.1 |
-79 |
|
Cuddalore |
4.5 |
1.9 |
137 |
6.0 |
28.2 |
-79 |
|
Dharmapuri |
0.0 |
1.0 |
-100 |
0.0 |
8.2 |
-100 |
|
Dindigul |
0.4 |
0.9 |
-58 |
3.0 |
19.0 |
-84 |
|
Erode |
0.0 |
0.7 |
-100 |
1.0 |
6.6 |
-85 |
|
Kanchipuram |
1.5 |
1.5 |
-2 |
7.9 |
17.3 |
-54 |
|
Kanyakumari |
0.0 |
4.1 |
-100 |
26.3 |
19.0 |
38 |
|
Karaikal |
4.4 |
2.2 |
100 |
31.1 |
53.3 |
-42 |
|
Karur |
0.8 |
0.5 |
63 |
2.5 |
9.8 |
-75 |
|
Krishnagiri |
0.0 |
0.2 |
-100 |
0.0 |
5.0 |
-100 |
|
Madurai |
0.0 |
1.4 |
-100 |
10.8 |
14.2 |
-24 |
|
Nagapattinam |
3.3 |
3.2 |
4 |
12.0 |
62.8 |
-81 |
|
Namakkal |
0.0 |
0.4 |
-100 |
0.1 |
6.8 |
-98 |
|
Nilgiris |
0.1 |
3.4 |
-97 |
18.1 |
24.2 |
-25 |
|
Perambalur |
0.0 |
0.7 |
-100 |
0.0 |
13.2 |
-100 |
|
Pudukottai |
0.0 |
0.7 |
-100 |
2.9 |
23.3 |
-88 |
|
Ramanathapuram |
1.0 |
1.8 |
-43 |
5.0 |
33.1 |
-85 |
|
Salem |
0.0 |
0.4 |
-100 |
0.0 |
8.6 |
-100 |
|
Sivaganga |
0.3 |
1.0 |
-71 |
6.0 |
15.9 |
-62 |
|
Thanjavur |
1.0 |
1.5 |
-35 |
2.0 |
26.9 |
-93 |
|
Theni |
0.0 |
3.0 |
-100 |
25.8 |
16.7 |
54 |
|
Tirunelveli |
0.9 |
3.4 |
-73 |
40.8 |
36.0 |
13 |
|
Tiruppur |
0.0 |
0.4 |
-100 |
1.7 |
7.1 |
-77 |
|
Tiruvallur |
2.6 |
1.2 |
118 |
8.3 |
18.0 |
-54 |
|
Tiruvannamalai |
0.0 |
1.5 |
-100 |
0.0 |
15.1 |
-100 |
|
Tiruvarur |
0.1 |
1.7 |
-95 |
0.5 |
40.9 |
-99 |
|
Toothukudi |
0.0 |
2.6 |
-100 |
7.9 |
24.9 |
-68 |
|
Trichy |
2.1 |
0.7 |
205 |
2.8 |
13.6 |
-80 |
|
Vellore |
0.0 |
1.3 |
-100 |
3.4 |
8.5 |
-60 |
|
Villupuram |
0.0 |
1.2 |
-100 |
7.3 |
18.5 |
-61 |
|
Virudhunagar |
0.0 |
2.2 |
-100 |
23.0 |
18.9 |
22 |
|
Puducherry |
1.0 |
1.3 |
-23 |
11.6 |
17.9 |
-35 |
|
Tamilnadu |
0.7 |
1.4 |
-48 |
7.4 |
17.9 |
-59 |
|
Tamilnadu and Puducherry |
0.7 |
1.4 |
-48 |
7.4 |
17.9 |
-59 |
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.