Country Report of India 1 Meteorology



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2.9.2 Other features observed

The lowest observed pressure of 998.6 hPa was reported by Bajpe at 0000 UTC of 9th 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 12th 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 9th to 12th 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 (28th Oct. –4th Nov. 2015)

    2.10.1 A trough of low at mean sea level lay over southeast Arabian Sea and adjoining Laskhadweep area on 22nd, over southeast Arabian Sea and neighbourhood with a cyclonic circulation aloft extending upto 0.9 km a.s.l. on 23rd and over southeast and adjoining southwest Arabian Sea with the cyclonic circulation aloft extending upto 0.9 km a.s.l. on 24th & 25th. It organised into a low pressure area over the same region with an associated cyclonic circulation extending upto mid tropospheric levels on 26th. It lay as a well marked low pressure area over the same region with associated cyclonic circulation extending upto mid tropospheric levels on 27th. 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 28th 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 28th, 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 29th. 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 29th. 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 29th 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 29th 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 29th. 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 30th. 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 30th. 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 30th. 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 31st. 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 31st 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 1st 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 1st. 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 2nd. 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 2nd. 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 3rd 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 3rd. 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 3rd. 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 3rd. 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 3rd. 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 4th Nov. It further weakened and lay as a well marked low pressure area over Yemen on 4th Nov.

The details of the system are given in Table 10.

Table–10

Date / Time (UTC)

Intensity

Position near
Lat. o N / Long. o E


(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 3rd 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 4th Nov.




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