Country Report of India 1 Meteorology

2.11.2 Other features observed

The lowest ECP was 964 hPa from 0600 UTC to 0900 UTC of 8^th. The maximum estimated mean wind speed was 95 kts from 0600 UTC to 0900 UTC of 8^th. The lowest observed pressure of 1005.0 hPa and maximum observed mean wind speed of 38kts was reported by Ship A8307(13.5/61.7) at 1200 UTC of 6^th, when the centre of system was very close to Ship A8307. The system moved initially northwest and then westward direction.

2.11.3 Weather and damage caused

No damage has been reported due to this system.

2.12 Deep Depression over southwest Bay of Bengal( 8^th -10^th Nov. 2015)

2.12.1 A cyclonic circulation lay over Equatorial Indian Ocean and adjoining southwest Bay of Bengal extending upto 3.1 kms a.s.l. on 4^th and over southwest Bay of Bengal and neighbourhood on 5^th and 6^th. It lay as a low pressure area over southwest and adjoining southeast Bay of Bengal with associated cyclonic circulation extending upto 4.5 kms a.s.l. on 7^th and as a well marked low pressure area over southwest Bay of Bengal and neighbourhood in the evening of 7^th. It concentrated into a Depression and lay over southwest Bay of Bengal, centred near Lat. 10.7° N/Long. 83.7° E, about 400 kms southeast of Chennai, 440 kms east-southeast of Puducherry, 420 kms east of Karaikal and 480 kms east-northeast of Jafna (Sri Lanka) at 0300 UTC of 8^th. It moved west-northwestwards and intensified into a Deep Depression and lay over southwest Bay of Bengal, centred near Lat. 11.2° N / Long. 81.4° E, at 1800 UTC of 8^th. It further moved west-northwestwards and lay over southwest Bay of Bengal,centred near Lat. 11.6° N / Long. 80.3° E, about, 60 kms east-southeast of Puducherry, 150 kms southeast of Chennai at 0300 UTC of the 9th. Then it moved northwards and lay over southwest Bay of Bengal centred near Lat. 12.1° N / Long. 80.0° E very close to north Tamil Nadu coast near north Puducherry at 1200 UTC of 9th. Moving westwards, it crossed north Tamil Nadu coast close to Marakanam (north of Puducherry) near Lat. 12.2° N / Long. 80.0° E around 1400 UTC of 9^th and lay centred near Lat. 12.4° N / Long. 79.6° E at 0000 UTC of 10^th. It then moved westwards and weakened into a Depression and lay over north Tamil Nadu centred near Lat. 12.4° N / Long. 79.3° E, about 80 kms east of Tirupattur and 60 kms south-southeast of Vellore at 0300 UTC of 10^th. It moved slowly westwards and weakened into a well marked low pressure area at 0600 UTC and lay over north Tamil Nadu and neighbourhood on 10^th afternoon. It weakened into a low pressure area and lay over north Tamil Nadu and adjoining south interior Karnataka in the evening of 10^th & became less marked on 11^th. However, the associated cyclonic circulation extending upto 5.8 kms a.s.l. lay over Kerala and neighbourhood on 12^th.

The details of the system are given in Table 12.

Table–12
Date / Time (UTC)	Intensity	Position near Lat. ^oN / Long. ^oE (Real time)	Based on
			Revised Estimates on Satellite Imagery /RADAR Obsn.	Supporting synoptic / asynoptic observations
8 Nov./ 0300	Depression	10.7 / 83.7	T 1.5	Buoy 23094(13.3/84.0): 1011.2 hPa, 050/16kts Buoy 23459(14.0/87.0): 1012.7 hPa, 100/17kts Buoy 23092(17.8/89.7): 1015.3 hPa, 040/14kts Buoy 23460(6.9/88.0): 1013.1 hPa, 070/10kts VSK: 1014.7hPa, 020/9kts
8 Nov./ 1200	Depression	11.0 / 82.5	T 1.5	Buoy 23094(13.4/83.1): 1009.8 hPa, 090/23kts Buoy 23459(14.0/87.0): 1010.6 hPa, 090/12kts MPT: 1010.4 hPa, 070/8kts NPT: 1006.3 hPa, 320/10kts Pamban: 1008.0 hPa, 360/22kts
8 Nov./ 1800	Deep Depression	11.2 / 81.4	T 2.0	Buoy 23094(13.5/84.0): 1010.6 hPa, 110/23kts Buoy 23459(14.0/87.0): 1012.5 hPa, 090/10kts MPT: 1011.9 hPa, 050/5kts CDL: 1007.1 hPa, 340/5kts NPT: 1007.1 hPa, 270/15kts
9 Nov./ 0000	Deep Depression	11.4 / 80.7	T 2.0	Buoy 23094(13.5/84.0): 1008.9 hPa, 100/19kts Buoy 23459(14.0/87.0): 1010.8 hPa, 110/14kts Buoy 23099(13.1/80.3): 1004.5 hPa, 100/19kts Cuddalore: 1000.8 hPa, 340/8kts NPT: 1002.6 hPa, 270/18kts Pamban: 1006.9 hPa, 230/11kts
9 Nov./ 0300	Deep Depression	11.6 / 80.3	T 2.0	Buoy 23094(13.5/84.0): 1011.2 hPa, 090/17kts Buoy 23099(13.1/80.3): 1005.4 hPa, 110/25kts Cuddalore: 1001.1 hPa, 320/20kts Chennai: 1006.6 hPa, 020/18kts TTC: 1008.8 hPa, 230/19kts
9 Nov./ 1200	Deep Depression	12.1 / 80.0	T 2.0	Buoy 23094(13.5/84.0): 1008.4 hPa, 120/14kts Ship 2GYL6(8.3/83.4): 1006.4 hPa, 160/17kts Cuddalore: 999.0 hPa, 270/21kts Tirupati: 1004.3 hPa, 050/16kts Puducherry: 996.0 hPa, 340/4kts
	Crossed north Tamil Nadu coast close to Marakanam, north of Puducherry near latitude 12.2°N/80.0°E around 1400 UTC.
10 Nov./ 0300	Depression	12.4/ 79.3	T 1.5	Vellore: 1005.4 hPa, 050/3kts Chennai: 1007.1 hPa, 110/3kts Cuddalore: 1006.0 hPa, 230/6kts Karaikal: 1007.3 hPa, 230/11kts Puducherry: 1005.7 hPa, 200/5kts
10 Nov.	It moved slowly westwards and weakened into a well marked low pressure area at 0600 UTC and lay over north Tamil Nadu and neighbourhood at 0900 UTC of 10^th.

2.12.2 Other features observed

The lowest ECP was 996 hPa from 0600 UTC to 1200 UTC of 9^th. The maximum estimated mean wind speed was 30 kts from 1800 UTC of 8^th to 0000 UTC of 10^th. At 0600 UTC of 9th, the system centre was located about 40-50 km southsoutheast of Puducherry. The lowest MSLP of 997.5 hPa was recorded at Puducherry and the ECP was 996 hPa. At 1200 UTC of 09th, the system was located about 30 km east-northeast of Puducherry with 996 hPa MSLP over Puducherry and ECP also about 996 hPa. However, Puducherry recorded the lowest MSLP of 991.7 hPa at 0900 UTC (1430 IST) of 9th.

As the system was located very close to the coast when the system maintained the intensity of a deep depression, wind speeds recorded by hourly coastal observations 8 provided the crucial input for determination of MSW during the time of landfall. Highest wind speed of 25 knots has been recorded by Puducherry observatory at 0000 and 0500 UTC of 09th. The maximum observed mean wind speed of 25 kts was also reported by Buoy 23099 (13.1/80.3) at 0300 UTC of 9th. The system moved initially west-northwest, northwards and then westward direction.

2.12.3 Weather and damage caused

Heavy rain at a few places with very heavy rain at isolated places occurred over south interior Karnataka and coastal Andhra Pradesh. Heavy to very heavy rain at a few places with extremely havy rain occurred at isolated places over Rayalseema and Tamil Nadu.

As the system caused extremely heavy rainfall, it caused extensive inland flooding over coastal districts of north coastal Tamil Nadu. About 31 deaths were reported in Tamil Nadu and Puducherry in association with the damages caused by the system (flood related casualities and due to wall collapses in kutcha houses).

Chief amounts of 24 hrs. rainfall ( more than 5 cm ) ending at 0300 UTC of 8^th -10^th Nov. 2015 are given below.

8.11.2015

Coastal Andhra Pradesh: 7-Gudur

Rayalseema: 5- Tirumalla AP

Tamil Nadu: 9- Manimutharu; 8- Nagapattinam, Ambasamudram each; 7- Maniyachi, Lower Kothaiyar ARG each; 6-Cheranmahadevi, Nanguneri, Radhapuram, Rameswaram each; 5- Coonoor PTO, Coonoor, Karaikal, Thenkasi, Ramnad Nicra, Palayamkottai each.

9.11.2015

Coastal Andhra Pradesh: 6- Udayagiri, Tada, Sullurpeta, Shar each.

Rayalseema:12- Tirumalla AP; 8-Satyavedu; 7-puttur, kodur, Srikalahasti each; 6- Nagari Pakala Thottambedu each; 5-Tirupati AP, Palasamudram each.

Tamil Nadu: 17- Karaikal, Chennai each; 14- Nagapattinam, Cuddalore each; 13- Puducherry; 5- Tiruttani.

10.11.2015

Coastal Andhra Pradesh: 24- Venkatagiri; 20- Gudur; 19- Rapur; 17- Atmakur; 12- Podalakur (Arg); 10-Nellore, Vinjamur each; 8- Tada; 7- Kaveli, Shar, Udayagiri, Sullurpeta each.

Rayalseema: 30- Tirumalla Ap; 22- Kodur; 20- Ananthrajpeta ARG; 15- Pullampeta, Kalakada each; 14- Chittoor; 13- Palamaner, Pakala, Mandapalle each; 12- Rajampet, Arogyavaram each; 11- Gurramkonda, Thottambedu, Santhipuram, trupati AP, Penagaluru, Palasamudram each; 10-Srikalahasti, Satyavedu, Punganur, Kuppam, Nagari each; 9- Royachoti, Venkatagiri Kota, Chinnamandem each; 6- Puttur, Thambalapalle each; 5- Utukuru AP, Lakkireddipalle, Kadiri, Nambulipulikunta, Tanakal each.

Tamil Nadu & Puducherry: 48-Neyveli AWS; 35-Panruti; 34-Sethiarthopu, Chidambaram each; 33-Parangipettai; 25-Yercaud; 24- Chidambaram AWS; 21- Thirukoyilur; 19- Virudhachalam, Uthangarai, Ambur, Sathanur Dam each; 18- Vilupuram, Alangayam, Vaniaymbadi, Alangayam, Vilupuram; 17- Pappireddipatti; 16- Uthiramerur; 15- Kallakkurichchi, Pennagaram, Barur, Sankarapuram, Anaikaranchatram (Kollid) each; 14- Penucondapuram , Shoolagiri, Palacode each; 13- Pallipattu, Krishnagiri, Kancheepuram, Omalur, Pochampalli each; 12-Gingee, Salem each; 11- Marandahalli, Ulundurpet, Hosur, Hogenekal, Cuddalore, Ponneri, Chengalpattu, Vellore each; 10- Tindivanam Trangambadi (or) Tranqueb, Vazhapadi, Rasipuram, Anjatti, Gudiyatham, Melalathur, Kaveripakkam each;

9- Puzhal ARG, Kalavai AWS, Thiruvalangadu, R.K.Pet, Denkanikottai, Chembarabakkam, Tiruvallur, Rayakottah, Thali, Red Hills each; 8- Mettur, Thamaraipakkam, Attur, Mangalapuram, Cholavaram, Sriperumbudur each; 7- Poonamallee, Sirkali, Poonamalle ARG, Chennai city, Ennore AWS, Tambaram, Thammampatty, Tozhudur, Madavaram AWS, Arakonam, Perambalur each; 6- Vanur, Sholingur, K.M.Koil, Venbavur, Chettikulam, Srimushnam, Thuraiyur, Kelambakkam, Puducherry, Tiruttani each; 5- Wallajah, Jayamkondam, Chembarambakkam ARG, Sankaridurg, Chennai AP, Padalur, Ariyalur, Thalavadi, Sendurai each.

South interior Karnataka: 18- Chamarajanagar PTO; 7- Yelandur, Kolar Gold Field, M M Hills each; 6- Chamarajanagar, Chintamani PTO each; 5- Hoskote, Bengaluru City, Gudibande each.



Fig. 1 : Tracks of storms and depressions over during the year 2015