भारत सरकार GOVERNMENT OF

भारतीय मौसम वान वभाग INDIA METEOROLOGICAL DEARTMENT ादेशक मौसम वान के Regional Meteorological Centre नया नं: 6, कालेजरोड, चेनै – 600 006 New No. 6, College Road, –600 006 दरभाषू : 044- 28271951 Phone: 044- 28271951

______Monday, September 20, 2021 (29 Bhadra 1943 SAKA)

SUMMARY OF OBSERVATIONS RECORDED AT 0830 HRS IST Southwest monsoon has been active over Tamilnadu. Rainfall occurred at many places over Tamilnadu, Puducherry & Karaikal and Coastal & Yanam; at a few places over ; at isolated places over Kerala & Mahe, and Rayalaseema. Dry weather prevailed over Lakshadweep area.

CHIEF AMOUNTS OF RAINFALL RECORDED IN CENTIMETERS:

TAMILNADU: Wallajah (dist Ranipet) 11, Chettikulam (dist Perambalur), Vepur (dist Cuddalore), Kattumayilur (dist cuddalore) 9 each, Veeraganoor (dist Salem), Kalayanallur (dist Kallakurichi) 8, Ammundi (dist ), Sankarapuram (dist Kallakurichi), Katpadi (dist Vellore), Sathanur Dam (dist Tiruvannamalai), Chengam (dist Tiruvannamalai), Thiyagadurgam (dist Kallakurichi) 7 each, Musiri (dist Trichy), Yercaud (dist Salem), (dist ) Rishivandhiyam( dist Kallakurichi) 6 each, Perambalur (dist Perambalur), Madukkur (dist Thanjavur), Kallakurichi (dist Kallakurichi), Thandarampettai (dist Tiruvannamalai), R.K.Pet (dist Tiruvallur), Vedasandur (dist Dindigul), Aravakurichi (dist Karur), Krishnagiri (dist Krishnagiri), Mylaudy (dist Kanyakumari), Padalur (dist Perambalur) 5 each, Virudachalam (dist Cuddalore), K.paramathi (dist Karur), Arcot (dist Ranipet), Thanjai Papanasam (dist Thanjavur), Kamatchipuram (dist Dindigul), Grand (dist Thanjavur), Vadapudupattu (dist Tirupattur), Kalavai Aws (dist Ranipet), (dist Tirupattur), Kulithalai (dist Karur), Vandavasi (dist Tiruvannamalai), Sholingur (dist Ranipet), Vellore (dist Vellore), Natrampalli (dist Tirupattur), Rishivandhiyam( dist Kallakurichi), Kadavanur (dist Kallakurichi) , Sulangurichi (dist Kallakurichi), Vallathy (dist Villupuram) 4 each, Manalmedu (dist Mayiladuthurai), Tirupathur Pto (dist Tirupattur), Pullambadi (dist Trichy), Pelandurai (dist Cuddalore), Budalur (dist Thanjavur), Sendurai (dist Ariyalur), Paiyur Aws (dist Krishnagiri), Pennagaram (dist Dharmapuri), Danishpet (dist Salem), Melalathur (dist Vellore), Polur (dist Tiruvannamalai), Samayapuram (dist Trichy), Kayathar Arg (dist Toothukudi), Barur (dist Krishnagiri), Nedungal (dist Krishnagiri), Vedaranyam (dist Nagapattinam), Ayyampettai (dist Thanjavur), Vallam (dist Thanjavur), K.m.koil (dist Cuddalore), Kangeyam (dist Tiruppur), Kadambur (dist Toothukudi), Kuppanatham (Cuddalore), Adirampatnam (dist Thanjavur) 3 each, Thuvakudi Imti (dist Trichy), Lalgudi (dist Trichy), Vathalai Anaicut (dist Trichy), Tirukattupalli (dist Thanjavur), Mannargudi (dist Tiruvarur), Pochampalli (dist Krishnagiri), Virinjipuram Aws (dist Vellore), Pandavaiyar Head (dist Tiruvarur), Ponnai Dam (dist Vellore), Thanjavur (dist Thanjavur), Needamangalam (dist Tiruvarur), Karur (dist Karur), Shoolagiri (dist Krishnagiri), Pattukottai (dist Thanjavur), Thirumanur (dist Ariyalur), Penucondapuram (dist Krishnagiri), Cheyyar (dist Tiruvannamalai), Vaniaymbadi (dist Tirupattur), (dist Krishnagiri), Labbaikudikadu (dist Perambalur), Palladam (dist Tiruppur), Veerapandi (dist Theni), Valangaiman (dist Tiruvarur), Orthanad (dist Thanjavur), Virudhunagar (dist

Virudhunagar), Thiruvennainallur(dist villupuram) 2 each. Uttamapalayam (dist Theni), Tirukoilur (dist Kallakurichi), Thammampatty (dist Salem), (dist Vellore), Mettur (dist Salem), Srivilliputhur (dist Virudhunagar), Karaikal (dist Karaikal), Uthangarai (dist Krishnagiri), Tiruvarur (dist Tiruvarur), Chinnakalar (dist Coimbatore), Sirkali (dist Mayiladuthurai), Seegoor (dist Perambalur), Mohanur (dist Namakkal), Erumapatti (dist Namakkal), Salem (dist Salem), Srimushnam (dist Cuddalore), Panchapatti (dist Karur), Puducherry (dist Puducherry), Mayanur (dist Karur), Ariyalur (dist Ariyalur), Thuraiyur (dist Trichy), Thali (dist Krishnagiri), Mylam Aws (dist Villupuram), Uthiramerur (dist Kancheepuram), Attur (dist Salem), Denkanikottai (dist Krishnagiri), Ulundurpet (dist Kallakurichi), Palani (dist Dindigul), Thanjavur PTO (dist Thanjavur), Ettayapuram (dist Toothukudi), Kancheepuram (dist Kancheepuram), (dist Ranipet), Jayamkondam (dist Ariyalur), Tindivanam (dist Villupuram), Tozhudur (dist Cuddalore), Kodaikanal (dist Dindigul), Udhagamandalam(dist Nilgiris) 1 each.

KERALA & LAKSHADWEEP AREA: Vynthala ARG (Thrissur district) 5, Vilangankunnu ARG (Thrissur district) 2 and Myladumpara (Idukki district) & Anchal ARG (Kollam district) 1 each.

COASTAL ANDHRA PRADESH & YANAM: Bobbili (dist Vizianagaram) 8, Eluru (dist West Godavari) 6, Mandasa (dist Srikakulam) 6, Piduguralla (dist Guntur) 5, Bapatla (dist Guntur) 5, Tiruvuru (dist Krishna) 5, Palakonda (dist Srikakulam) 5, Cheepurupalle (dist Vizianagaram) 4, Pathapatnam (dist Srikakulam) 4, Pusapatirega (dist Vizianagaram) 4, Sompeta (dist Srikakulam) 4, Ichchapuram (dist Srikakulam) 4, Chintalapudi (dist West Godavari) 4, Tekkali (dist Srikakulam) 4, Karamchedu (dist Prakasam) 3, Jangamaheswarapuram (dist Guntur) 3, Bheemunipatnam (dist Vishakhapatnam) 3, Sattenapalle (dist Guntur) 2, Tanuku (dist West Godavari) 2, Garugubilli (dist Vizianagaram) 2, Anakapalle (dist Vishakhapatnam) 2, Mundlamuru (dist Prakasam) 2, Addanki (dist Prakasam) 2, Macherla (dist Guntur) 2, Chodavaram (dist Vishakhapatnam) 2, Salur (dist Vizianagaram) 2, Garividi (dist Vizianagaram) 2, Veeraghattam (dist Srikakulam) 1, Merakamudidam (dist Vizianagaram) 1, Tenali (dist Guntur) 1, Parvathipuram (dist Vizianagaram) 1, Visakhapatnam Ap (dist Vishakhapatnam) 1, Denkada (dist Vizianagaram) 1, Vizianagaram (dist Vizianagaram) 1, Masulipatnam Cdr (dist Krishna) 1, Mangalagiri (dist Guntur) 1, Balajipeta (dist Vizianagaram) 1, Paderu (dist Vishakhapatnam) 1, Bheemavaram (dist West Godavari) 1.

RAYALASEEMA: Venkatagiri Kota (dist Chittoor) 9, (dist Chittoor) 5, Santhipuram (dist Chittoor) 4, Chittoor (dist Chittoor) 4, Palasamudram (dist Chittoor) 2, Punganur (dist Chittoor) 1, Palamaner (dist Chittoor) 1.

TELANGANA: Palakurthi (dist Jangaon) 10, Gudurwrgl (dist Mahabubabad) 9, Chennaraopet (dist Warangal_rural) 9, Dharmasagar (dist Warangal_urban) 9, Noothankal (dist ) 7, Hasanparthy (dist Warangal_urban) 7, Yadagirigutta(arg) (dist Y. Bhuvanagiri) 5, Kodada (dist Suryapet) 5, Tirumalagiri(arg) (dist Suryapet) 5, Ghanpur (dist Jangaon) 5, Yadagirigutta (dist Y. Bhuvanagiri) 5, Khanapur (dist Warangal_rural) 5, Bhuvanagiri (dist Y. Bhuvanagiri) 5, Venkatapuram (dist Mulugu) 4, Bhongir(arg) (dist Y. Bhuvanagiri) 4, Kohir (dist Sangareddy) 4, Hanamkonda (dist Warangal_urban) 4, Bheemadevarpalle (dist Warangal_urban) 3, Devaruppal (dist Jangaon) 3, Bayyaram (dist Mahabubabad) 3, Narsampet (dist Warangal_rural) 3, Kodakandla (dist Jangaon) 3, Hakimpet Iaf (dist M. Malkajgiri) 3, Shadnagar (dist Rangareddy) 3, Thollada (dist ) 3, Kothaguda (dist Mahabubabad) 3, Tekmal (dist Medak) 3, Atmakur M (dist Y. Bhuvanagiri) 3, Huzurabad (dist ) 3, Nangnoor(arg) (dist Siddipet) 3, Nanganur (dist Siddipet) 3, Chilkur (dist Suryapet) 2, Peddapalle (dist Peddapalle) 2, Uppal(arg) (dist M. Malkajgiri) 2, Sathupalle (dist Khammam) 2, Nallabelly (dist Warangal_rural) 2, Mothey (dist Suryapet) 2, Shayampet (dist Warangal_rural) 2, Chinthakam (dist Khammam) 2, Kerameri

(dist Kumaram Bheem) 2, Wankdi (dist Kumaram Bheem) 2, Jangaon(arg) (dist Jangaon) 2, Aswaraopeta (dist B. Kothagudem) 2, Sirpuru (dist Kumaram Bheem) 1, Jagadevpur (dist Siddipet) 1, Chigurumamidy (dist Karimnagar) 1, Kondurg (dist Rangareddy) 1, Mahabubabad (dist Mahabubabad) 1, Atmakurwrgl (dist Warangal_rural) 1, Narmetta (dist Jangaon) 1, Alladurg (dist Medak) 1, Burgampadu (dist B. Kothagudem) 1, Birkoor (dist Kamareddy) 1, Jangaon (dist Jangaon) 1, Mominpet (dist Vikarabad) 1, Naykal (dist Sangareddy) 1, Serilingampally(arg) (dist Rangareddy) 1, Srirampur (dist Peddapalle) 1, Nawabpet (dist Vikarabad) 1, Raghunathpalle (dist Jangaon) 1, A.p. (dist Hyderabad) 1, Pochampalle (dist Y. Bhuvanagiri) 1, Chandur (dist ) 1, Chevella (dist Rangareddy) 1, Konijerla (dist Khammam) 1, Utnur (dist ) 1, Gandeed (dist Mahabubnagar) 1, Manuguru (dist B. Kothagudem) 1, Shamirpet (dist M. Malkajgiri) 1, Narayankhed (dist Sangareddy) 1, Tadwai Mlg (dist Mulugu) 1, Aswaraopet(a) (dist B. Kothagudem) 1, Ibrahimpatnam (dist Rangareddy) 1.

KARNATAKA: Bangarpet ( Kolar) 7, K G F AWS (Kolar dt) 6, Mulbagal (Kolar dt) 5, Bengaluru City Obsy , Bengaluru HAL AP Obsy 3 each; Krishnarajpet (Mandya dt), Kolar Pwd (Kolar dt) 2 each; Bengaluru KIAL Obsy ,Jnanabharathi BU Campus (Bengaluru Urban dt) , Malur , Rayalpadu (both Kolar dt) 1 each.

RAINFALL FORECAST FOR NEXT 5 DAYS AND OUTLOOK FOR SUBSEQUENT 02 DAYS WX OUTLOOK Met 20.09.21 21.09.21 22.09.21 23.09.21 24.09.21 FOR Sub Division 25.09.21 & 26.09.21 / Puducherry & FWS SCT SCT SCT FWS NSC Karaikal Kerala & Mahe FWS SCT SCT SCT SCT NSC

Lakshadweep SCT SCT SCT SCT SCT NSC

Coastal Karnataka SCT FWS FWS FWS FWS NSC North Interior ISOL SCT SCT SCT SCT NSC Karnataka South Interior SCT SCT SCT SCT SCT NSC Karnataka Coastal Andhra FWS FWS SCT SCT SCT NSC Pradesh & Yanam Rayalaseema ISOL SCT ISOL ISOL ISOL NSC

Telangana FWS WS FWS FWS FWS NSC

HEAVY RAINFALL WARNING: Day 1(20.09.2021): Heavy rain is likely to occur at isolated places over Pudukkottai, Ramanathapuram, Salem, Kallakurichi, Tiruvannamalai and Delta districts of Tamilnadu, South interior Karnataka, Kerala, Coastal Andhra Pradesh and Telangana. Day 2(21.09.2021): Heavy rain is likely to occur at isolated places over Vellore, Tiruvallur, Ranipettai, Erode, Namakkal and Salem districts of Tamilnadu, North interior Karnataka, Coastal Andhra Pradesh and Telangana. Day 3(22.09.2021): Heavy rain is likely to occur at isolated places over Vellore, Ranipettai, Tiruvallur, Dharmapuri, Salem, Tiruvannamalai and Kallakurichi districts of Tamilnadu.

Day 4(23.09.2021): Heavy rain is likely to occur at isolated places over Salem, Villupuram, Kallakurichi, Cuddalore and Delta Districts of Tamilnadu. Day 5(24.09.2021): Heavy rain is likely to occur at isolated places over Salem, Villupuram, Kallakurichi, Cuddalore, Kancheepuram, Chengalpattu, Tiruvallur and Delta Districts of Tamilnadu.

THUNDERSTORM WARNING: Day 1(20.09.2021) & Day 2(21.09.2021): Thunderstorm with lightning is likely to occur at isolated places over Tamilnadu, Kerala, South interior Karnataka, Coastal Andhra Pradesh, Rayalaseema and Telangana. Day 3(22.09.2021): Thunderstorm with lightning is likely to occur at isolated places over Tamilnadu and Coastal Andhra Pradesh.

LOCAL FORECAST FOR CHENNAI CITY AND NEIGHBOURHOOD: For next 24 HRS: The sky condition is likely to be partly cloudy. Thunderstorm with light to moderate rain is likely to occur in some areas. Maximum and minimum temperature will be around 35˚C and 26˚C respectively. For next 48 HRS: The sky condition is likely to be partly cloudy. Thunderstorm with light to moderate rain is likely to occur in some areas. Maximum and minimum temperature will be around 35˚C and 26˚C respectively.

Dr. N. PUVIARASAN SCIENTIST – ‘E’ For DEPUTY DIRECTOR GENERAL OF METEOROLOGY REGIONAL METEOROLOGICAL CENTRE, CHENNAI

OBSERVATIONS RECORDED AT 0830 HRS IST OF Monday, September 20, 2021 (29 Bhadra 1943 SAKA) TEMPERATURE CHN CHN RELATIVE CHN CHN RAINFALL CHN CHN (Degree Celsius) AP HUMIDITY AP (mm) AP Max. Past 24 hrs. 35.2 35.2 At 0830 hrs IST 87 73 Past 24 hours 0.0 0.0 Dep. from normal Dep. from Since 01.06.2021 503.4 436.9 0.9 0.8 11 -2 normal Min. past 24 hrs. At 1730 hrs IST 26.0 24.2 87 63 Dep. from normal 111.1 5.8 on 19.09.2021 Dep. from normal Dep. from 0.4 -1.2 16 -5 normal At 0830 hrs. IST 28.0 27.6

OBSERVATIONS RECORDED AT 0830 HRS IST OF DATE:20-09-2021 (29 Bhadra 1943 SAKA) Temperature Degrees Humidity Rainfall Celsius percentage Maximum Minimum At Millimeters Centimeters Dep. Past Dep. Past Dep. 0830 Past Seasons Departure Year's Weather Stations from Annual 24 from 24 from Hrs 24 total from total remarks normal normal Hrs normal Hrs normal IST Hrs from normal from 1-6- 1-1- oC oC oC oC % % mm mm cm 2021 2021 Adiramapattinam 33.7 0.2 23.3 -1.8 100 26 31.1 374.5 92.6 86 124 r Chennai 35.2 0.9 26.0 0.4 87 11 0 503.4 111.1 72 140 Chennai_AP 35.2 0.8 24.2 -1.2 73 -2 0 436.9 5.8 73 138 Coimbatore_AP 35.0 2.1 24.2 2.0 87 6 0 74.6 -52.2 35 59 m* Coonoor 23.4 1.3 16.2 1.8 93 17 tr 336.5 53.6 148 159 d Cuddalore 34.5 0.4 23.7 -1.2 88 12 0 408.2 71.7 89 134 Dharmapuri 35.0 2.7 21.7 -0.8 85 11 1.0 343 0 50 91 r Erode 37.2 -- 23.5 -- 90 -- 3.2 338.2 -- 56 -- Kanyakumari 31.8 1.3 25.0 0.5 69 -9 0 223.4 22.9 72 75 KarurParamathi 38.5 5.4 21.0 -3.0 88 11 44.2 310.6 -- 56 59 r Karaikal 32.8 -1.2 22.9 -2.4 95 17 13.6 248.7 -12.5 61 150 r Kodaikanal 19.0 0.2 11.3 -0.1 100 17 7.7 678.3 201.1 134 158 r Madurai City 34.2 -1.3 25.0 0.3 73 0 0 344.8 -- 60 -- Madurai_AP 34.8 -0.2 25.6 1.0 82 15 0 316.8 61.2 57 85 z* Nagapattinam 34.1 -0.2 24.1 -1.4 95 19 0.7 278.2 43.1 70 143 r Palayamkottai 35.3 -0.7 24.2 -1.6 60 -4 0 35.5 -29.3 35 73 Pamban 33.0. 0 27.4 0.6 80 5 0 36.8 -4.5 38 91 Parangipettai 33.4 -- 21.1 -- 83 -- 0 330.2 39.2 102 139 Puducherry 33.2 -1.7 20.2 -5.0 89 10 10.4 406.4 60.3 88 134 r Salem 36.3 3.2 21.5 -1.3 90 9 11.3 606.6 155.6 79 102 r Thanjavur 34.0 -1.2 21.6 -3.1 74 -8 8.6 385.6 103.4 67 95 r Thirupattur 31.4 -1.3 19.4 -3.6 88 10 34.1 582.4 136.2 75 95 r Tiruchirappalli_AP 35.6 0.7 23.0 -1.9 91 19 6.8 535 246.5 82 87 r Tiruthani 35.6 1.3 23.5 0 72 -1 0 536 131.2 72 101 Tondi 34.6 1.8 26.0 0.6 74 1 0 236 90.1 62 88 Thoothukudi NA -- 27.0 2.0 81 11 0 56.1 26.5 52 63 Udhagamandalam 22.0 2.6 12.0 1.0 98 11 12.2 678.4 209.8 103 116 r Valparai 25.0 -- 18.0 -- 95 -- 5.0 2736.7 -- 358 -- r Vellore 35.4 1.7 20.5 -2.9 90 11 36.7 597.3 152.2 77 103 r *Weather at 0830 hours IST. Other remarks refer to preceding 24 hours. NA-Not avble D-Duststorm l- Lightning d-drizzle m-mist s-snow r-rain h-hail f-fog p-shower z-haze t-thunderstorm tr-rainfall not measurable. Tr-rainfall 0.01 to 0.49 cm AP-Airport plus sign omitted when departures above normal.

Spatial rainfall distribution % Stations reporting Category Rainfall 76-100 Widespread (WS/ most places) 51-75 Fairly Widespread (FWS/ many places) 26-50 Scattered (SCT/ few places) 1 -25 Isolated (ISOL/ one or two places)

No Rain DRY

LEGEND:

North Tamil Nadu Chennai, Kancheepuram, Chengalpattu, Tiruvallur, Cuddalore, (NTN) districts Villupuram, Kallakurichi, Thanjavur, Tiruvarur, Nagapattinam, Pudukottai, Vellore, Thirupattur, Ranipet, Tiruvannamalai, Krishnagiri, Salem, Dharmapuri, Namakkal, Nilgiris, Tiruppur, Coimbatore, Erode, Karur, Tiruchirapalli, Ariyalur, Perambalur. South Tamil Nadu Ramanathapuram, Tirunelveli, Thenkasi, Thoothukudi, Theni, (STN) districts Kanyakumari, Sivagangai, Virudhunagar, Dindigul, Madurai. Interior Tamil Nadu Vellore, Thirupattur, Ranipet, Tiruvannamalai, Krishnagiri, (ITN) districts Dharmapuri, Salem, Namakkal, Nilgiris, Tiruppur, Coimbatore, Erode, Karur, Tiruchirapalli, Ariyalur, Perambalur, Sivagangai, Virudhunagar, Theni, Dindigul, Madurai. North interior Tamil Vellore, Tiruvannamalai, Krishnagiri, Dharmapuri, Salem, Nadu (NITN) districts Namakkal, Nilgiris, Tiruppur, Coimbatore, Erode, Karur, Tiruchirapalli, Ariyalur, Perambalur. South interior Tamil Sivagangai, Virudhunagar, Theni, Thenkasi, Dindigul, Madurai. Nadu (SITN) districts Coastal Tamil Nadu Chennai, Kancheepuram, Chengalpattu, Tiruvallur, Cuddalore, (CTN) districts Villupuram, Kallakurichi, Thanjavur, Tiruvarur, Nagapattinam, Pudukottai, Ramanathapuram, Tirunelveli, Thenkasi, Thoothukudi, Kanyakumari. North Coastal Tamil Chennai, Kancheepuram, Chengalpattu, Tiruvallur, Cuddalore, Nadu (NCTN) Villupuram, Kallakurichi, Thanjavur, Tiruvarur, Nagapattinam, districts Pudukottai.

South Coastal Tamil Ramanathapuram, Tirunelveli, Thoothukudi, Kanyakumari. Nadu (SCTN) districts Delta districts Thanjavur, Tiruvarur, Nagapattinam. PDC Puducherry.

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