Country Report of India 1 Meteorology

2.9.2 Other features observed

The lowest observed pressure of 998.6 hPa was reported by Bajpe at 0000 UTC of 9^th Oct., when the system was north to the Bajpe. The maximum observed mean wind speed was 20 kts reported by Buoy 23097(14.0/68.0), when the system was to the northwest of Buoy 23097 at 1200 UTC of 12^th Oct. The system moved in northwest direction.

2.9.3 Weather and damage caused

No damage was reported by this system.

Isolated to scattered rainfall occurred over parts of Konkan & Goa and coastal Karnataka.

Chief amounts of 24 hrs. rainfall (1 cm or more) ending at 0300 UTC from 9^th to 12^th Oct. 2015 are given below:

9.10.2015

Konkan & Goa: 5-Dodamarg, 1-Pernem

Coastal Karnataka: 1- Mangaluru

10.10.2015

Coastal Karnataka: 3- Manchikere; 2- Mani; 1- Siddapura, Dharmasthala, Kumta, Shirali PTO

11.10.2015

Coastal Karnataka: 2- Puttur Hms, 1-Uppinangadi, Mani.

Konkan & Goa: 1- Mokhada – FMO, Ambernath.

12.10.2015

Konkan & Goa: 4- Matheran, Karjatagri, Bhiwandi; 3- Sudhagad Pali, Wada, Shahapur,

Pen; 2- Jawhar, Kalyan, Murbad; 1- Poladpur, Mokhada – FMO, Vikramgad, Khalapur, Sangameshwar.

2.10 Extremely Severe Cyclonic Storm 'CHAPALA' over Arabian Sea (28^th Oct. –4^th Nov. 2015)

2.10.1 A trough of low at mean sea level lay over southeast Arabian Sea and adjoining Laskhadweep area on 22^nd, over southeast Arabian Sea and neighbourhood with a cyclonic circulation aloft extending upto 0.9 km a.s.l. on 23^rd and over southeast and adjoining southwest Arabian Sea with the cyclonic circulation aloft extending upto 0.9 km a.s.l. on 24^th & 25^th. It organised into a low pressure area over the same region with an associated cyclonic circulation extending upto mid tropospheric levels on 26^th. It lay as a well marked low pressure area over the same region with associated cyclonic circulation extending upto mid tropospheric levels on 27^th. Then it concentrated into a Depression and lay over southeast Arabian Sea and adjoining areas of southwest & central Arabian Sea, centred near Lat. 11.5°N / Long. 65.0°E about 1200 kms southwest of Mumbai and 1320 kms southeast of Salalah (Oman) at 0300 UTC on 28^th Oct. Moving north northwestwards, it intensified into a Deep Depression over east central and adjoining west central and south Arabian Sea and lay centred at 1200 UTC of 28^th, near Lat. 12.5°N / Long. 64.7°E. It continued to move north-northwestwards and further intensified into a Cyclonic Storm, 'CHAPALA' and lay over eastcentral and adjoining westcentral and south Arabian Sea centered near Lat. 13.7°N / Long. 64.3°E, about 1080 kms southwest of Mumbai and about 1150 kms east-southeast of Salalah (Oman) at 0000 UTC on 29^th. It then moved northwestwards and lay over eastcentral and adjoining westcentral and south Arabian Sea, centred near Lat. 13.8°N / Long. 64.2°E, about 1090 kms southwest of Mumbai and about 1140 kms east-southeast of Salalah (Oman) at 0300 UTC of 29^th. It moved west-northwestwards and intensified into a Severe Cyclonic Storm and lay over west central and adjoining eastcentral Arabian sea at 0900 UTC on 29^th October 2015 centered near Lat. 14.0°N / Long. 63.5°E. It further moved west-northwestwards and lay over west central and adjoining eastcentral Arabian sea at 1200 UTC on 29^th October 2015 centered near Lat. 14.1°N / Long. 63.3°E, about 1150 kms west-southwest of Mumbai and about 1040 kms east-southeast of Salalah (Oman). It further intensified into a Very Severe Cyclonic Storm and lay over westcentral Arabian Sea centred near Lat. 14.3°N / Long. 62.5°E at 1800 UTC of 29^th. Then it moved westwards and further intensified into an Extremely Severe Cyclonic Storm and lay over westcentral Arabian Sea, centred near Lat. 14.3°N / Long. 61.8°E at 0000 UTC on 30^th. It further moved westwards and lay over westcentral Arabian Sea, centred near Lat. 14.3°N / Long. 61.5°E, about 1320 kms west-southwest of Mumbai and 850 kms east-southeast of Salalah (Oman) at 0300 UTC on 30^th. It moved west-southwestwards and lay centred near Lat. 14.1°N / Long. 60.6°E about 1410 kms west-southwest of Mumbai and 770 kms east-southeast of Salalah (Oman) at 1200 UTC on 30^th. It further moved west-southwestwards and lay centred near Lat. 13.8°N / Long. 59.2°E, about 1560 kms west-southwest of Mumbai and 650 kms southeast of Salalah (Oman) at 0300 UTC on 31^st. It moved westwards and lay centered near Lat. 13.8°N / Long. 57.9°E, about 1690 kms west-southwest of Mumbai and 540 kms southeast of Salalah (Oman) at 1200 UTC on 31^st Oct. It moved west-southwestwards and lays centered near Lat. 13.6°N / Long. 56.1°E, about 430 kms south-southeast of Salalah (Oman) , 740 kms east-southeast of Riyan (Yemen) and 260 kms east-northeast of Socotra Island (Yemen) at 0300 UTC on 1^st Nov. It moved westwards and lay centered near Lat. 13.6°N / Long. 54.6°E, about 380 kms south- southeast of Salalah (Oman) , 590 kms east-southeast of Riyan (Yemen) and 130 kms north-northeast of Socotra Island (Yemen) at 1200 UTC on 1^st. It moved west-southwestwards and lay centered near Lat. 13.2°N / Long. 52.2°E, about 470 kms south-southeast of Salalah (Oman) , 350 kms southeast of Riyan (Yemen) and 190 kms west-northwest of Socotra Island (Yemen) at 0300 UTC on 2^nd. It moved west-northwestwards, weakened into a Very Severe Cyclonic Storm and lay over Gulf of Aden and adjoining westcentral Arabian Sea centered near Lat. 13.4°N / Long. 50.5°E, about 180 km southeast of Riyan (Yemen) and about 550 km southwest of Salalah (Oman) at 1200 UTC of 2^nd. It furher moved west-northwestwards, crossed Yemen coast to the southwest of Riyan, near Lat. 14.1°N / Long. 48.6°E, during 0100-0200 UTC on 3^rd November as a Very Severe Cyclonic Storm. It then continued to move west-northwestwards, weakened into a Severe Cyclonic Storm and lay over Yemen centred near Lat. 14.2°N / Long. 48.4°E about 100 km southwest of Riyan (Yemen) at 0300 UTC on 3^rd. It moved west-northwestwards and weakened into a Cyclonic Storm and lay centered near Lat. 14.2°N / Long. 47.8°E about 100 kms east-southeast of Ataq (Yemen) at 0600 UTC on 3^rd. It further moved westwards and lay centered near Lat. 14.2°N / Long. 47.3°E about 60 kms south-southeast of Ataq (Yemen) at 1200 UTC of 3^rd. It then moved west-northwestwards, weakened into a Deep Depression and lay centred near Lat. 14.3°N / Long. 47.0°E, about 25 kms south-southeast of Ataq (Yemen) at 1800 UTC of 3^rd. It further moved nortwestwards and weakened into a Depression and lay centred near Lat. 14.8°N / Long. 46.5°E about 50 kms northwest of Ataq (Yemen) at 0000 UTC on 4^th Nov. It further weakened and lay as a well marked low pressure area over Yemen on 4^th Nov.

The details of the system are given in Table 10.

Table–10
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
28 Oct./ 03	Depression	11.5 / 65.0	T 1.5	Buoy 23910(12.2/69.2): 1010.0 hPa Buoy 23668(13.9/61.8): 1010.6 hPa Buoy 23451(15.0/68.9): 1012.3 hPa Minicoy: 1011.9 hPa, 230/3kts Amini Divi: 1011.4 hPa, VRB/1kts
28 Oct./ 1200	Deep Depression	12.5 / 64.7	T 2.0	Buoy 23668(13.5/61.5): 1007.9 hPa Buoy 23451(15.0/68.5): 1010.0 hPa, 080/10kts Buoy 23910(12.2/69.1): 1007.7 hPa Ship DCCP2(7.3/54.3): 1009.0 hPa, 020/4kts Ratnagiri: 1009.5 hPa, 270/2kts Amini Divi: 1008.7 hPa
29 Oct./ 0000	Cyclonic storm	13.7 / 64.3	T 2.5	Buoy 23097(14.5/68.5): 1009.2 hPa, 140/12kts Buoy 23910(12.2/69.1): 1008.7 hPa Ship A8CB7(19.0/59.4): 1011.0 hPa, 080/19kts Ship BATFR45(10.3/55.4): 1009.2 hPa, 120/20kts Amini Divi: 1008.7 hPa
29 Oct./ 0300	Cyclonic storm	13.8 / 64.2	T 2.5	Buoy 23668(13.5/61.4): 1008.8 hPa Buoy 23451(15.0/68.5): 1011.8 hPa, 110/8kts Buoy 23097(14.5/68.5): 1011.5 hPa, 120/10kts Ship BATFR45(10.6/56.1): 1010.3 hPa, 060/11kts Syp Masirah: 1014.8hPa, 100/14kts Hanimaadhoo: 1012.2hPa, VRB/1kts
29 Oct./ 0900	Severe Cyclonic storm	14.0 / 63.5	T 3.0	-
29 Oct./ 1200	Severe Cyclonic storm	14.1 / 63.3	T 3.5	Buoy 23668(13.7/61.6): 1004.9 hPa Ship BATFR45(11.5/58.2): 1007.5 hPa, 350/10kts Ship WDE8265(16.8/70.2): 1009.8 hPa, 180/2kts Mashirah: 1012.9 hPa, 070/17kts Ras Al Hadd: 1013.3 hPa, 060/8 kts
29 Oct./ 1800	Very Severe Cyclonic storm	14.3 / 62.5	T 4.0	Buoy 23097(14.8/68.8): 1011.6 hPa, 130/8kts Ship BATFR45(12.0/59.4): 1008.9 hPa, 330/13kts Ship TWWUK75(18.0/67.2): 1011.7 hPa, 070/22kts Ship DIGW(18.7/71.9): 1011.0 hPa, 020/21kts Mashirah: 1015.0 hPa, 070/14kts
30 Oct./ 0000	Extremely Severe Cyclonic storm	14.3 / 61.8	T 5.0	Buoy 23097(14.8/69.0): 1009.7 hPa, 120/4kts Ship BATFR45(12.0/61.0): 1005.8 hPa, 270/16kts Buoy 23910(12.0/69.3): 1008.7 hPa Amini Divi: 1008.4 hPa, VRB/1kts Mashirah: 1013.6 hPa, 070/16kts
30 Oct./ 0300	Extremely Severe Cyclonic storm	14.3 / 61.5	T 5.5	Buoy 23668(13.5/61.6): 1000.4 hPa Ship BATFR45(12.0/61.7): 1007.5 hPa, 240/19kts Ship ATSS(21.0/66.2): 1009.8 hPa, 180/2kts Ship DIGW(18.7/71.9): 1001.3 hPa, 150/58kts Mashirah: 1014.9 hPa, 080/19kts
30 Oct./ 1200	Extremely Severe Cyclonic storm	14.1 / 60.6	T 6.0	Buoy 23910(12.3/69.4): 1009.0 hPa Ship BATFR45(12.5/63.9): 1008.2 hPa, 190/16kts Ship CQCZ(15.3/54.3): 1010.3 hPa, 090/20kts Mashirah: 1013.5 hPa, 080/20kts Ras Al Hadd: 1014.3 hPa, 040/10kts
31 Oct./ 0300	Extremely Severe Cyclonic storm	13.8 / 59.2	T 5.5	Buoy 23910(12.3/69.4): 1011.0 hPa Ship BATFR45(15.4/65.3): 1011.2 hPa, 110/13kts Ship D5BU7(19.6/64.6): 1013.0 hPa, 060/14kts Mashirah: 1014.6 hPa, 080/16kts Ras Al Hadd: 1015.0 hPa, 060/11kts
31 Oct./ 1200	Extremely Severe Cyclonic storm	13.8 / 57.9	T 5.5	Ship BATFR45(17.4/65.6): 1009.7 hPa, 070/12kts Buoy 23910(12.3/69.4): 1008.2 hPa Mashirah: 1012.6 hPa, 080/16kts Salalah: 1009.7 hPa, 070/12kts Marmul: 1008.7 hPa, 070/15kts
1 Nov./ 0300	Extremely Severe Cyclonic storm	13.6/56.1	T 5.5	Ship BATFR45(19.8/60.0): 1010.6 hPa, 070/17kts Buoy 23097(14.8/68.9): 1009.0 hPa, 090/8kts Mashirah: 1013.2 hPa, 090/13kts Salalah: 1010.1 hPa, 360/18kts Marmul: 1011.0 hPa, 050/13kts
1 Nov./ 1200	Extremely Severe Cyclonic storm	13.6/54.6	T 5.5	Salalah: 1009.0 hPa, 170/8kts Marmul: 1009.4 hPa, 100/15kts Yalni: 1011.1 hPa, 090/13kts Buoy 23451(15.0/68.9): 1009.3 hPa, 040/4kts
2 Nov./ 0300	Extremely Severe Cyclonic storm	13.2/52.2	T 5.0	Ship BATFR45(12.0/49.4): 1008.5 hPa, 310/12kts Buoy 23451(15.0/68.9): 1012.2 hPa, 020/10kts Salalah: 1012.6 hPa, 010/3kts Marmul: 1013.2 hPa, 050/8kts
2 Nov./ 1200	Very Severe Cyclonic storm	13.4/50.5	T 4.5	Ship WMPP(12.2/50.2): 1002.5 hPa, 250/30kts Ship BATFR45(12.0/51.0): 1003.5 hPa, 270/27kts Mashirah: 1013.7 hPa, 090/13kts Salalah: 1011.5 hPa, 140/12kts Marmul: 1010.7 hPa, 120/14kts
3 Nov./ 0100-0200 UTC	It moved west-northwestwards, crossed Yemen coast to the southwest of Riyan, near Lat. 14.1°N / Long. 48.6°E, during 0100-0200 UTC on 3^rd November as a Very Severe Cyclonic Storm.
3 Nov./ 0300	Severe Cyclonic storm	14.2/48.4	-	Ship SHIP(12.5/43.2): 1006.3 hPa, 270/15kts Ship BATFR45(12.0/53.0): 1011.5 hPa, 170/13kts Salalah: 1014.5 hPa, 010/4kts
3 Nov./ 0600	Cyclonic storm	14.2/47.8	-	Ship SHIP(12.2/44.6): 1008.9 hPa, 350/7kts Ship BATFR19(11.0/53.6): 1013.4 hPa, 130/11kts Ship WMPP(14.7/53.2): 1015.0 hPa, 100/15kts Ship 9U8797(13.5/42.4): 1010.9 hPa, 280/10kts Salalah: 1016.0 hPa, VRB/7kts
3 Nov./ 1200	Cyclonic storm	14.2/47.3	-	Ship DIXJ2(12.2/61.2): 1010.3 hPa, 040/12kts Ship BATFR19(10.2/54.3): 1009.9 hPa, 110/14kts Ship WMPP(15.6/53.5): 1012.7 hPa, 110/3kts Marmul: 1010.9 hPa, 090/10kts Gizan: 1005.2 hPa, 270/12kts
3 Nov./ 1800	Deep Depression	14.3/47.0	-	Ship A8PX5(12.1/45.0): 1011.2 hPa, 060/15kts Ship BATFR19(9.4/55.0): 1013.2 hPa, 090/16kts Ship VRGM8(17.2/56.5): 1016.1 hPa, 080/12kts Salalah: 1015.7 hPa, 120/6kts Gizan: 1009.2 hPa, 360/4kts
4 Nov./ 0000	Depression	14.8/46.5	-	Ship ONAR(20.5/38.6): 1008.0 hPa, 350/9kts Ship BATFR19(8.2/53.2): 1011.2 hPa, 080/11kts Marmul: 1013.6 hPa, 150/3kts Salalah: 1013.8 hPa, 350/2kts Gizan: 1007.2 hPa
4 Nov.	The system weakened and lay as a well marked low pressure area over Yemen on 4^th Nov.