BHARAT SARKAR

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 1^ST SEPTEMBER 2010 /10^TH BHADRAPADA  1932 SAKA

                                                     SUMMARY OF WEATHER

Week’s Rainfall :  

Excess:  Kanyakumari, Nilgiris,  Salem, Sivagangai,  Thanjavur,  Theni and  Tiruvarur districts and Karaikal.  

Normal:  Ariyalur, Dindigul,  Perambalur,  Pudukkottai, Ramanathapuram and  Tiruvallur districts.

Deficient: Cuddalore, Dharmapuri, Erode, Kanchipuram, Karur, Nagapattinam, Namakkal, Tiruchirapalli and Virudhunagar  districts.

Scanty: Chennai, Coimbatore,  Krishnagiri, Madurai,  Tirunelveli, Tiruppur, Tiruvannamalai, Toothukudi, Vellore and   Villupuram districts and Puducherry.

The chief amounts of rainfall recorded in Centimetres are:

26.08.10 :Naduvattam (Nilgiris) 5   and Ponneri and Red Hills (both Thiruvallur), Hosur and Thalli (both Krishnagiri), Devala and Gudalur Bazaar (both Nilgiris ) and Melur (Madurai) 1 each.

27.08.10:  Naduvattam  5, Adiramapatnam, Muthupet (Tiruvarur ) and Devala 3 each, Chidambaram (Cuddalore)   2  and Parangipettai, Sethiyathope (Cuddalore), Peravurani (Thanjavur), Alangudi (Pudukottai), Pappireddipatti (Dharmapuri ), Gudalur Bazar  and Periyar Dam (Theni ) 1 each.

28.08.10 : Devala 2 and  Pennagaram (Dharmapuri ) 1.

29.08.10:Devala 7,       Sankaridurg (Salem ) and Thogamalai (Karur ) 4 each,   Illuppur (Pudukottai), Virudhunagar, Gudalur Bazar , Naduvattam, Kadavur, Kodaikanal and Satyamangalam (Erode) 3 each,  Adiramapatnam, Palacode (Dharmapuri ), Tirumayam (Pudukottai(, Grand Anaicut (Thanjavur), Mangalapuram (Namakkal ), Athur (Salem), Yercaud, Kothagiri (Nilgiris) and Tirumangalam (Madurai) 2 each and Chengalpattu (Kanchipuram), Krishnagiri, Kumarapalayam (Namakkal), Keeranur and Gandarvakottai (both Pudukottai), Tiruvaiyaru, Papanasam and Tirukattupalli (all Thanjavur dt), Periyar Dam, Muthupet,  Omalur (Salem), Coonoor, Tiruchirapalli Airport, Marungapuri and Pullambadi (both Tiruchirapalli ), Melur (Madurai ) and Chinna Kallar 1each.

30.08.2010:Muthupet 12, Devala 11, Tirutttani and Tirumanur (Ariyalur) 8 each and Needamangalam (Tiruvarur), Kodaikanal, Pudukottai, Thirumayam (Pudukottai) and R. S. Mangalam (Ramanathapuram) 7 each,      Karaikal and Papanasam (Thanjavur) 6 each, Thiruvidaimarudhur (Thanjavur), Sankaridurg, Gudalur Bazaar, Perambalur, Devakottai, Karaikudi and Tirupathur  (all Sivagangai) 5 each ,  Sendurai (Ariyalur), Pallipattu (Tiruvallur),  Kattumannarkoil (Cuddalore), Adiramapattinam, Kumbakonam,    Pattukottai, and Thiruvaiyaru (all Thanjavur),  Rasipuram (Namakkal), Yercaud,  Marungapuri, Periyar Dam and Sivagangai 4 each,  Thuraiyur (Tiruchirapalli), Aruppukottai, Ramakrishnarajupet and Poondi (both Thiruvallur), Thiruvallur, Orathanadu (Thanajvur), Thanjavur, Aranthangi and Arimalam (both Pudukottai), Tondi, Kuzhithurai (Kanyakumari), Sholingur (Vellore) , Vazhapadi (Salem), Naduvattam, Chettikulam (Perambalur) and  Melur 3 each, Bhavani (Erode), Thamaraipakkam (Thiruvallur), Kallakurichi (Villupuram), Peravurani, Thiruthuraipoondi (Thiruvarur), Mayiladuthurai (Nagapattinam), Nagapattinam, Gandarvakottai, Karambakudi and Perungalur (all Pudukottai), Pamban, Rameshwaram (Ramanathapuram), Arakonam (Vellore), Mangalapuram and Sendamangalam (both Namakkal), Athur and Omalur (both Salem), Jayamkondam (Ariyalur), Vembavur (Perambalur), Musiri and Samayapuram (both Thiruchirapalli), Chittampatti (Madurai), Madurai and  Tiruppuvanam (Sivangangai) 2 each and  Ponneri, Poonamalle, Cholavaram, Korattur and Red Hills (all Thiruvallur), Parangipetai, Thozhudur (Cuddalore), Salem, Thirukoilur (Villupuram), Madukkur and Thirukattupalli (both Thanjavur), Valangaiman (Thiruvarur), Alangudi (Pudukottai), Thiruvadanai (Ramanathapuram), Kumarapalayam and Tiruchengode (both Namakkal), Coonoor, Ariyalur, Padallur (Perambalur), Pullambadi and Thathiengarpet (both Thiruchirapalli ) and  Aruppukottai 1 each.

31.08.2010: Karaikal 9, Muthupet 6, Nannilam, Tiruthuraipoondi and Kodavasal (all Tiruvalur) 4 each, Nungambakkam, Chengalpattu, Maduranthagam and Uthiramerur (all Kanchipuram dt), Tarangambadi (Nagapattinam), Devala, Naduvattam, Adirampattinam, Vandavasi (Tiruvannamalai), Tiruvarur and Sholinghur 3 each, Cuddalore, Pennagaram, Palacode, Dharmapuri, Pechiparai (Kanyakumari), Perungalur, Orathanadu, Madukkur, Periyar Dam, Tiruvannamalai, Tirupattur and Vellore 2 each and Pollachi (Coimbatore), Kanchipuram, Barur, Uthangarai, Penukondapuram and  Pochampalli (all Krishnagiri), Nagapattinam, Gudalur Bazaar, Ketty, Uthagamandalam, Illuppur, Gandarvakottai, Keeranur, Devakottai, Poonamallee, Cheyyar and Arani (both Tiruvannamalai), Needamangalam and Valangaiman (both Tiruvarur) and Arakkonam 1 each.

Season’s Rainfall for the period from 01.06.10 to 01.09.10:

Excess: Chennai, Dharmapuri, Dindigul, Erode, Kanchipuram, Karur,  Nagapattinam, Perambalur, Ramanathapuram, Salem, Sivagangai, Theni, Tirunelveli, Tiruppur, Tiruvallur and  Tiruvarur   districts and Karaikal and Puducherry.

Normal: Ariyalur, Cuddalore, Kanyakumari, Krishnagiri, Madurai, Namakkal,  Nilgiris, Pudukkottai, Thanjavur, Tiruvannamalai, Toothukudi,  Tiruchirapalli, Vellore, Villupuram and Virudhunagar districts.

Deficient:  Coimbatore district.

Chief synoptic features and its associated weather:

Last week’s  low pressure area over Westcentral and adjoining Coastal Andhra Pradesh persists with associated upper air cyclonic circulation  extending upto mid tropospheric levels slopping southwestwards with height on 26^th and it moved inland on 27^th. 

    A trough on sea level chart ran Vidarbha to extreme south Tamil Nadu across Telangana, Rayalaseema and Interior Tamil Nadu on 27^th and it ran from Telangana to extreme south Peninsula across Rayalaseema, South Interior Karnataka and Interior Tamil Nadu on 28^th, and it was seen from Telangana to extreme south Tamil Nadu across South Coastal Andhra Pradesh and Coastal Tamil Nadu on 29^th and it ran from Coastal Andhra Pradesh to south Tamil Nadu across Coastal Tamil Nadu on 30^th, 31^st August and 1^st September.

     An East-West shear line ran roughly along Latitude 18 degree North across Peninsula between 3.1 and 7.6 Kilometres above sea level on 30^th August.

Rainfall

Rainfall occurred at a  few places over the State on 30^th and 31^st August 2010.  Isolated rainfall occurred over the State during the remaining days of the week.

Regional Meteorological Centre,                                                        DR. S. R. RAMANAN

6, College Road, Chennai-6,                                                                DIRECTOR

Date: 02.09.10.                                                               for Deputy Director General of Meteorology

RAINFALL STATEMENT

         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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