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Earthquakes in Maharashtra, India

State - Maharashtra, India
Capital - Mumbai (Bombay)
State Population - 96,752,247 (2001)

Million+ Cities
Greater Mumbai - pop. 11,914,398
Pune
- pop. 2,540,069
Nagpur
- pop. 2,051,320
Thane
- pop. 1,261,517
Kalyan-Dombivili
- pop. 1,193,266
Nashik
- pop. 1,076,967
Pimpri-Chinchwad
- pop. 1,006,417

Population per district (Top 5)
Mumbai (suburban) - pop. 8,640,419
Thane - pop.
8,131,849
Pune - pop.
7,232,555
Nashik - pop.
4,993,796
Nagpur - pop.
4,067,
637


Earthquake History
In peninsula India the state of Maharashtra, along with Gujarat and Madhya Pradesh, has suffered from frequent earthquakes, both deadly and damaging, although not located on or near any plate boundaries. All the earthquakes here, as in all of peninsula India, are intraplate events. In the 20th century alone, three earthquakes with magnitudes greater than 6.0 were recorded here. The west coast along with the major cities of Mumbai and Pune have both been strongly shaken in the past in 1618 and 1764 respectively. Several faults have been identified in this region out of which many show evidence of movement (2) during the Holocene epoch. The north-south trending West Coast and Chiplin Faults (2), run along the coast and the Sahyadri range. The West Coast fault runs along the eastern shore of the Thane Creek in the Mumbai area, along the flanks of the Parsik Hills (Belapur-Vashi region). The Chiplun Fault runs (2) from the mouth of Bombay Harbour to the Sangammeshwar area in Ratnagiri district. The southeast-northwest trending Upper Godavari Fault (2) runs along the Godavari River from near Trimbakeshwar towards Marathwada. The Ghod River Fault (2) trends in the same direction and runs from the Jawhar area in Thane district towards Bhigwan in eastern Pune district. The Vidharbha region is intersected by a prominent fault called the Kadam fault which runs from Bhusawal into northern Andhra Pradesh. The northern section of the state is affected by east-west faults (2) belonging to the Narmada Fault Zone. However, it must be stated that proximity to faults does not necessarily translate into a higher hazard as compared to areas located further away, as damage from earthquakes depends on numerous factors such as subsurface geology as well as adherence to the building codes. The earthquake at Koyna in 1967 is the largest known case of Reservoir-Induced Seismicity (RIS) in the world. RIS (12) has also been noted at other dams in the state such as Bhatsa, Ghirni and Mula.


Seismic Hazard

The seismic hazard map of India was updated in 2000 (6) by the Bureau of Indian Standards (BIS). The new map includes the central districts of Beed (Bir), Dharashiv (Osmanabad) and Latur, along with eastern sections of Ahmednagar, Pune, Satara and Sangli districts in Zone III. All of these areas lay in Zone I or II in the BIS 1984 map. The zones in the rest of the state are the same as in the previous map. The districts of Raigad, Ratnagiri and Satara are the only districts to lie in Zone IV, where the maximum expected intensity is VIII (MSK). The remaining western and north-western districts all lie in Zone III. The central and eastern districts lie in Zone II. It must be noted that BIS estimates the hazard, based in part, on previous known earthquakes. Since the earthquake database in India is still incomplete, especially with regards to earthquakes prior to the historical period (before 1800 A.D.), these zones offer a rough guide of the earthquake hazard in any particular region and need to be regularly updated (See also: GSHAP Hazard Map for Maharashtra).

Largest Instrumented Earthquake in Maharashtra
10 December 1967 - Koyna area, Maharashtra, Mw 6.5 (2).
17.450 N, 73.850 E, D=027.0 kms, OT=06:48:25 UTC (2)
200 people were killed and many villages in the Koynanagar area were severely affected. The Koyna Dam suffered some structural damage and leaks were observed in the face of the dam. Tremors were felt strongly in many towns and cities in western Maharashtra, including, Mumbai and Pune. Also felt in Goa and other parts of western and southern India.

Significant Earthquakes in Maharashtra
The following list briefly outlines known earthquakes in this region which either had observed intensities of
V or higher (historical events) or had known magnitudes of 5.0 or more (instrumented events). General locations are provided for historical events for which "generalized" epicentral co-ordinates are available. Some events which were significant for other reasons are also included. Events of intensity III or greater, in or in the immediate vicinity of Mumbai are also listed. This list will be updated whenever newer information is available. Aftershocks of the 1967 Koyna and 1993 Khilari earthquake will not be listed unless there exists additional data for them. Please note that Magnitude and Intensity are NOT THE SAME. All events are within the state or union territory covered on this page unless stated otherwise.

Acronyms Used:
D=Depth, OT=Origin Time, Mw=Moment Magnitude, Ms=Surface Wave magnitude, Mb=Body Wave Magnitude, ML=Local Magnitude, M?=Magnitude Type unknown

This listing will be modified without notice. Please check back for the latest version when using it elsewhere. Additionally, please reproduce using appropriate CITATIONS/CREDITS.


1524 A.D. - Off the coast of Dabhol, Maharashtra.
A large tsunami (15) caused considerable alarm to the Portuguese fleet who were assembled off the coast of Dabhol (15), Maharashtra.

1594 A.D. - Matheran area, Maharashtra.
19.10 N, 73.20 E (1)
Maximum observed intensity IV (1). This region lies to the east of Mumbai and to the south-east of Kalyan. It is the earliest reported earthquake from this region.

26 May 1618 - Mumbai area, Maharashtra.
18.90 N, 72.90 E (1)
Maximum observed intensity IX (1). This is the most damaging earthquake known to date in or near the Mumbai area. 2,000 fatalities are blamed on this event. The exact location and magnitude of this earthquake are still unclear.

1678 A.D. - Matheran area, Maharashtra.
19.10 N, 73.20 E (1)
Maximum observed intensity VI (1). This region lies to the east of Mumbai and to the south-east of Kalyan.

09 December 1751 - Vangani-Matheran area, Maharashtra.
19.10 N, 73.20 E (1)
Maximum observed intensity VI (1). This region lies to the east of Mumbai and to the south-east of Kalyan.

05 January 1752 - Badlapur-Neral area, Maharashtra.
19.10 N, 73.30 E (8)
Maximum observed intensity V (8). This region lies to the east of Mumbai and to the south-east of Kalyan.

05 February 1752 - Lohagarh-Lonavala area, Maharashtra.
18.70 N, 73.40 E (8)
Maximum observed intensity V (8). This region lies to the west of Pune.

31 October 1757 - Valha-Jejuri area, Maharashtra.
18.20 N, 74.20 E (8)
Maximum observed intensity V (8). This region lies to the south-east of Pune.

1760 - Pune area, Maharashtra.
18.50 N, 73.90 E (8)
Maximum observed intensity IV (8).

17 August 1764 - Mahabaleshwar-Panchgani area, Maharashtra.
17.90 N, 73.70 E
Maximum observed intensity VII (8). Felt in western Maharashtra, at Nashik, Phaltan, Wai, Karad and Hukeri. This region lies to the south-west of Pune.

29 May 1792 - Amli-Revadanda area, Maharashtra.
18.50 N, 73.00 E (8)
Maximum observed intensity V (8). This region lies to the south of Alibag and north of Murud.

23 February 1812 - Pune area, Maharashtra.
18.50 N, 73.90 E (8)
Maximum observed intensity IV (8).

20 March 1826 - Talgaon-Kudal area, Maharashtra.
16.10 N, 73.70 E (8)
Maximum observed intensity VI (8). This region lies to the east of Malvan. This earthquake is also known as the Moze Morwade earthquake.

04 December 1832 - Ajgaon-Terekhol area, Maharashtra.
15.800 N, 73.700 E (8)
Maximum observed intensity VI (8). This earthquake is the largest event known near the state of Goa. No moderate or major earthquakes have been recorded in Goa.

26 December 1849 - Bombay Harbour, Maharashtra.
18.90 N, 72.90 E (8)
Maximum observed intensity IV (8). This region to the east of Colaba, Mumbai.

November 1854 - Bombay Harbour, Maharashtra.
18.90 N, 72.90 E (8)
Maximum observed intensity IV (8). This region to the east of Colaba, Mumbai.

18 December 1854 - Bombay Harbour, Maharashtra.
18.90 N, 72.90 E (8)
Maximum observed intensity IV (8). This region to the east of Colaba, Mumbai.

25 December 1856 - Parsipada-Kasa Khurd area, Maharashtra.
20.00 N, 73.00 E (1)
Maximum observed intensity VII (1). This region lies to the east of Tarapur and to the west of Nashik.

18 November 1863 - Nagalwadi-Julwania area, Madhya Pradesh.
21.80 N, 75.30 E
Maximum observed intensity VI (8). This region lies along the border of Maharashtra in the Khandwa area of Madhya Pradesh.

04 July 1869 - Lasalgaon-Vinchur area, Maharashtra.
20.20 N, 74.20 E (1)
Maximum observed intensity V (1). This region lies to the north-east of Nashik.

12 July 1869 - Dhule area, Maharashtra.
20.90 N, 74.80 E (1)
Maximum observed intensity V (1).

22 November 1872 - Mahadeopur-Sironcha area, Andhra Pradesh.
18.86 N, 80.10 E (9)
Maximum observed intensity VI (9). This area straddles the state border between Andhra Pradesh and Maharashtra.

20 July 1935 - Parsipada-Kasa Khurd area, Maharashtra, Ms 5.0 (1).
20.00 N, 73.00 E (1)
This region lies to the east of Tarapur and to the west of Nashik.

16 September 1935
- Vashi area, Maharashtra, M? 3.0 (8).
19.10 N, 73.00 E (8)
Maximum observed intensity III (8).

14 March 1938 - Bhusawal-Sawda area, Maharashtra, Mw 6.3 (11).
21.13 N, 75.83 E, D=040.0 kms, OT=00:48:38 UTC (2)
Maximum observed intensity VII (2). This earthquake was felt over a wide region, including at Agra in the north and Mumbai in the west. Deep-seated event (11), with a focal depth (11) of 40 kilometres.

27 November 1945 - Off the Makran coast, Pakistan, Mw 8.0 (14)
24.500 N, 63.000 E, D=025.0 kms, OT=21:56 UTC (14)
At least 2000 people killed in southern Pakistan and neighbouring Iran. Tsunamis with heights of 12 meters struck the Makran coast. Damage also occurred at Ormara. 15 people were killed by the tsunami in Mumbai.

08 April 1951 - Off the Konkan Coast, M? 6.0 (9)
18.500 N, 70.800 E, OT=20:53:08 UTC (9)
Centred in the Arabian Sea, 218 kilometres east-south-east of Mumbai, this was the largest earthquake in this part of the Arabian Sea in recent history. It was felt at Mumbai, Pune and Surat.

25 August 1957 - Lalburra-Tikari area, Madhya Pradesh, Ms 5.5 (2).
22.000 N, 80.000 E, OT=21:04:50 UTC (2)
The district of Balaghat in Madhya Pradesh and Bhandara in Maharashtra were affected. 25 fatalities are reported for this event. The epicentre of this earthquake was north of the town of Waraseoni in Madhya Pradesh and the town of Gondia in Maharashtra.

13 December 1957 - Koyna area, Maharashtra, M? 5.4 (9).
17.300 N, 73.700 E, OT=03:37:12 UTC (9)
- No Comment -

04 June 1965 - Koyna area, Maharashtra, M? 5.4 (9).
17.000 N, 73.400 E, OT=03:37:12 UTC (9)
- No Comment -

25 April 1967 - Mahad-Goregaon area, Maharashtra, M? 5.6 (9).
18.260 N, 73.300 E, D=051.0 kms, OT=03:53:19 UTC (5)
This event was located on the Konkan coast, to the south-west of Pune.

13 September 1967 - Koyna area, Maharashtra, M? 6.0 (5, 9).
17.600 N, 74.000 E, D=004.0 kms, OT=06:23:32 UTC (5, 9)
Felt strongly in western Maharashtra. Some damage reported (7) in the Koyna region.

13 September 1967 - Koyna area, Maharashtra, Ms 5.5 (2).
17.400 N, 73.700 E, D=004.0 kms, OT=06:48:25 UTC (2)
Felt strongly in western Maharashtra. Some damage reported (7) in the Koyna region.

10 December 1967 - Koyna area, Maharashtra, Mw 6.5 (2).
17.450 N, 73.850 E, D=027.0 kms, OT=06:48:25 UTC (2)
200 people were killed and many villages in the Koynanagar area were severely affected. The Koyna Dam suffered some structural damage and leaks were observed in the face of the dam. Tremors were felt strongly in many towns and cities in western Maharashtra, including, Mumbai and Pune. Also felt in Goa and other parts of western and southern India.

26 September 1970 - Wai area, Maharashtra, M? 5.5 (9).
18.000 N, 74.000 E, OT=16:36:44 UTC (9)
It is located roughly 60 kilometres to the south of Pune.

17 February 1974 - Arabian Sea, M? 5.0 (8).
17.500 N, 73.100 E (8)
This event was located off the Konkan coast, to the west of Guhagar near Ratnagiri.

02 September 1980 - Koyna area, Maharashtra, Mw 5.0 (13).
17.270 N, 73.760 E, D=033.0 kms, OT=16:39:14 UTC (2)
Strongest in a series of small to moderate earthquakes from this date to the end of September 1980.

20 September 1980 - Koyna area, Maharashtra, Ms 5.2 (2).
17.260 N, 73.640 E, D=019.0 kms, OT=10:45:30 UTC (2)
Second largest event in a series of small to moderate earthquakes from this date to the end of September 1980.

14 September 1983 - Bhatsa area, Maharashtra, Mb 4.3 (2).
19.640 N, 73.540 E, D=033.0 kms, OT=21:53:41 UTC (2)
This earthquake is believed to have been induced by the Bhatsa Dam.

14 November 1984 - Koyna area, Maharashtra, Mb 4.5 (2).
17.280 N, 73.960 E, D=015.0 kms, OT=11:58:20 UTC (2)
Felt strongly in western Maharashtra and as far as Belgaum, Karnataka. 2 injuries were reported (10).

12 August 1991 - Arabian Sea, Ms 4.1 (10).
18.387 E, 71.15 E, D=033.0 kms, OT=16:41:06 UTC (10)
This earthquake was centred in the Arabian Sea, roughly 138 kilometres south-southwest of Colaba, Mumbai.

18 October 1992 - Nilanga-Killari area, Maharashtra, Mb 4.3 (2).
18.100 E, 76.730 E, D=025.0 kms, OT=17:33:02 UTC (2)
Felt strongly in Latur district and many people rushed outdoors in panic. Many buildings were damaged by the tremor, which was the largest event in a swarm that was felt in the area from August to October 1992.

24 August 1993 - Arabian Sea, Mb 4.9 (2).
20.700 E, 71.440 E, D=029.0 kms, OT=17:47:30 UTC (2)
This event was located in the Gulf of Khambat, to the west of Surat, Gujarat. This earthquake was felt widely in south-eastern Gujarat and parts of coastal Maharashtra. In Gujarat, people rushed out into the open at Ankleshwar, Bardoli, Bharuch and Bulsar. It was felt strongly (MM V) at Rajula. It was also felt (MM IV) at Amreli, Bhavnagar and Surat. In Maharashtra, it was felt (MM III) in Mumbai. Reports of tremors were received from Bandra, Chembur, Juhu, Kandivili and Prabhadevi. The shock was perceived over an area with a radius of 250 kilometres.

28 August 1993 - Koyna area, Maharashtra, Mb 4.8 (2).
17.240 N, 73.730 E, D=005.0 kms, OT=04:26:24 UTC (2)
Felt in western Maharashtra, including at Mumbai and Pune. 10 school students were injured in a stampede that broke out in their school in Ichalkaranji. Slight damage was reported for this tremor.

30 September 1993 - Killari area, Maharashtra, Mw 6.2 (10)
18.090 N, 76.470 E, OT=22:25:50 UTC (2)
Among the deadliest intraplate earthquakes on record. Close to 8,000 people were killed and thousands injured in the pre-dawn earthquake. Many villages in the epicentral area, around Killari were razed to the ground. 55 people were killed in the neighbouring state of Karnataka, in Gulbarga district. Strong tremors were experienced at Hyderabad, Pune and Mumbai and across much of Maharashtra, Karnataka, Andhra Pradesh and Goa. Tremors were felt as far as Chennai.

08 December 1993 - Chandoli area, Maharashtra, Mw 5.1 (13).
17.000 N, 73.650 E, D=032.0 kms, OT=01:42:17 UTC (2)
1 elderly woman died of a heart attack and 6 were injured in this early morning quake. It was felt very strongly all over western Maharashtra and Goa for close to 20 seconds. Moderate damage was reported in several villages in the epicentral area.

01 February 1994 - Koyna area, Maharashtra, Mb 5.0
17.228 N, 73.523 E, OT=09:30:55 UTC (10)
1 person hospitalised for shock in the Pimpri-Chinchwad area. Tremors were felt for close to 18 seconds in western Maharashta and in Goa and Karnataka.

14 December 1995 - Killari area, Maharashtra, ML 4.6 (4)
18.131 N, 76.543 E, D=010.0 kms, OT=04:09:32 UTC (4)
Felt in widely in the Marathwada area of Maharashtra. 10-12 wall collapses were reported from the Umarga area of Dharashiv (Osmanabad) district. Many houses in Ausa, Ganjankhed, Haregaon, Mangrul, Nandurga, Nimbala, Nilanga, Renapur, Sirsi Police Lines and Talni developed cracks.

31 May 1998 - Koparpada-Naude area, Maharashtra, ML 3.6
19.040 N, 73.110 E, OT=13:29 UTC (4)
This earthquake was the first instrumented event in this general area. Tremors were felt in Thane (MM IV-V) and at Dombivili, Kalyan, Kulgaon and Mumbra. Mild tremors (MM III-IV) were experienced in Mumbai at Borivali, Chembur, Dahisar, Juhu, Malad, Mira Road, Santa Cruz and Wadala as well as in south Mumbai.

12 March 2000 - Koyna are, Maharashtra, Mw 5.0
17.244 N, 73.707 E, D=05.0 kms, OT=18:03:52 UTC
A moderate earthquake struck the Koyna region in Maharashtra, India, on 12 March 2000 at 23:33 PM local time resulting in some damage to property in the Koyna-Warna region of Maharashtra. It had a magnitude of Mw=5.0 and was felt for close to 28-seconds in the states of Maharashtra, Karnataka and Goa.

19 June 2000 - Killari area, Maharashtra, ML 4.6 (4)
18.008 N, 76.532 E, OT=08:22 UTC (4)
Felt in Marathwada, Maharashtra. Also felt at Solapur in Maharashtra and Gulbarga in Karnataka.

05 September 2000 - Koyna area, Maharashtra, Mw 5.2
17.332 N, 73.790 E, D=010.0 kms, OT=00:32:43 UTC
A moderate earthquake struck the Koyna region in Maharashtra, India, on 5 September 2000 at 06:02 AM local time resulting in some damage to property in the districts of Kolhapur, Pune, Ratnagiri, Satara and Sangli in Maharashtra. It had a magnitude of Mw=5.2 and was felt for close to 47-seconds in the states of Maharashtra, Karnataka and Goa.

16 November 2001 - Airoli area, Navi Mumbai, Maharashtra, ML 2.9
19.155 N, 73.007 E, OT=20:08:39 UTC
A mild earthquake struck parts of Thane and Mumbai districts, on 16 November 2001 at 01:38 AM local time. It had a magnitude of ML=2.9 and was felt distinctly in parts of both districts.

27 March 2003 - Koyna area, Maharashtra, ML 4.1
17.379 N, 73.803 E, D=015.0 kms, OT=06:18:25 UTC
A light earthquake struck the Koyna-Warna region in Maharashtra, India, on 27 March 2003 at 11:48 AM local time causing minor damage to property in Patan taluka. The earthquake had a magnitude of ML=4.1 and was felt in parts of western Maharashtra. A milder foreshock at 10:36 AM resulted in one death at Sayyedwadi in Ratnagiri district.

27 July 2003 - Sindvani area, Maharashtra, ML 3.8
21.878 N, 74.341 E, D=020.0 kms, OT=04:35:33 UTC
A mild earthquake struck the border areas of the states of Maharashtra, Madhya Pradesh and Gujarat on 27 July 2003 at 10:05 AM local time. It caused some minor damage in the region and had a magnitude of ML=3.8.

17 May 2004 - Katraj-Dive Ghats, Pune, ML 3.2
18.365 N, 73.936 E, D=08.3 kms, OT=22:14:41 UTC
A mild earthquake was felt in the Pune metropolitan area in Maharashtra, on 17 May 2004 at 03:44 AM local time. The earthquake had a magnitude of ML=3.2 and was centred in the Dive-Katraj range between the Dive & Katraj Ghats to the south of the Pune urban area.

14 March 2005 - Koyna area, Maharashtra, ML 5.1
17.139 N, 73.687 E, D=25.0 kms, OT=15:13:45 UTC
A moderate earthquake struck western Maharashtra as well as adjoining areas of Goa and northern Karnataka on the afternoon of 14 March 2005 and lasted nearly 30-seconds. It had a magnitude of ML=5.1. It caused damage in the Chandoli-Koyna-Warna region and resulted in at least 46 minor injuries. Another tremor of Mb=4.3 tremor occurred the following day. 

13 April 2005 - Marathwada, Maharashtra, ML 4.0
18.66 N, 76.60 E, OT=06:07:03 UTC
A light earthquake struck the Marathwada region in Maharashtra, India, on 13 April 2005 at 11:37 AM local time causing minor damage to property in the region.

14 June 2005 - Ambarnath region, Maharashtra, Mw 3.7
19.238 N, 73.201 E, D=2 kms, OT=12:16:12 UTC
A mild earthquake struck the Titvala region near Mumbai, Maharashtra, on 14 June 2005 at 17:46 PM local time. It had a magnitude of Mw=3.7 and was felt in many towns in the region as well as in suburban Mumbai.

30 August 2005 - Koyna area, Maharashtra, Mb 4.7
17.070 N, 73.770 E, D=10.0 kms, OT=08:53:20 UTC
A light earthquake struck the Koyna-Warna region in Maharashtra, India, on 30 August 2005 at 02:23 AM local time causing minor damage to property in Patan taluka. The earthquake had a magnitude of Mb=4.7 and was felt in parts of western Maharashtra, north Karnataka and Goa.

4 January 2006 - Marathwada region, Maharashtra, ML 3.5
18.222 N, 76.392 E, D=7.1 kms, OT=11:01:33 UTC
A mild earthquake struck the Marathwada region in Maharashtra, India, on 4 January 2006 at 16:31 PM local time. It had a magnitude of ML=3.5 and was felt strongly in some parts of the region.

17 April 2006 - Koyna area, Maharashtra, Mb 4.4
17.003 N, 73.797 E, D=35.0 kms, OT=16:40:02 UTC
A light earthquake struck the Koyna-Warna region in Maharashtra, India, on 17 April 2006 at 22:10 PM local time causing minor damage to property in Patan taluka. The earthquake had a magnitude of Mb=4.4 and was felt at many places in western Maharashtra, north Karnataka and Goa.

31 March 2007 - Nanded region, Maharashtra
An earthquake swarm accompanied by loud explosion-like reports began to be felt in the town of Nanded and the adjoining areas on 31 March 2007 local time. Minor damage and a few injuries were reported as a result of the tremors in Nanded.

6 June 2007 - Katraj-Khadakwasla region, Pune, Maharashtra, M2.6
OT=07:48 UTC
A mild earthquake was felt in the Pune metropolitan area in Maharashtra, on 6 June 2007 at 13:18 PM local time. The earthquake had a magnitude of M?=2.6 and was felt in parts of the Pune metropolitan area. Officials at the Meteorological Department also suggested the possibility that this might have been the result of underground tunneling work that is underway in the apparent epicentral region and not of seismic origin.

21 August 2007 - Warna-Koyna region, Maharashtra, ML 4.0
17.170 N, 73.770 E, D=5.0 kms, OT=19:15:51 UTC
A light earthquake occurred in Koyna-Warna (Chandoli) region of south-western Maharashtra on 21 August 2007 at 00:45 AM local time and caused minor damage in the epicentral region. The earthquake had a magnitude of ML=4.0 and was felt in several parts of the region including as far as the Pune region to the north.

6 September
2007 - Marathwada, Maharashtra, ML 4.1
18.057 N, 76.535 E, D=10.0 kms, OT=07:09:44 UTC
A light earthquake occurred in Marathwada region of south-central Maharashtra on 6 September 2007 at 12:39 PM local time and caused panic as well as minor damage in the epicentral region. The earthquake had a magnitude of ML=4.1 and was felt in parts of south-central Maharashtra and in north Karnataka.

30 July
2008 - Koyna region, Maharashtra Mb=4.3
17.324 N, 73.747 E, D=3.2 kms, OT=19:11:01 UTC
A light earthquake (M4.0-4.9 termed as light) occurred in the Koyna (Koynanagar-Helwak area) region of south-western Maharashtra on 30 July 2008 at 00:41 AM local time. The earthquake centred in the Gokul-Waghini area had a magnitude of Mb=4.3 causing some damage, minor injuries and was felt in several parts of the region including as far as Mumbai & Nashik.


16 September
2008 - Koyna region, Maharashtra Mb=4.9
17.289 N, 73.815 E, D=10 kms, OT=21:47:15 UTC
A light earthquake (M4.0-4.9 termed as light) occurred in the Koyna region of south-western Maharashtra on 17 September 2008 at 03:17 AM local time. The earthquake centred in the Koyna-Warna area had a magnitude of Mb=4.9 and caused widespread damage in the epicentral region and at least one death near Pune. The shock was felt for over 45-seconds in much of western Maharashtra, Goa and north Karnataka, even as far south as Bengaluru.


References
01) Chandra, U., "Earthquakes of Peninsular India--A seismotectonic study", Bulletin of the Seismological Society of America, Vol. 67, No. 5, pp. 1387 - 1413, 1977.

02) Dasgupta, S., Pande, P., Ganguly, D., Iqbal, Z, Sanyal, K, Venkatraman, N.V., Dasgupta, S., Sural, B., Harendranath, L., Mazumdar, K., Sanyal, S., Roy, K., Das, L.K., Misra, P.S., Gupta, H.,  "Seismotectonic Atlas of India and its Environs", Geological Survey of India, 2000.

03)
Giardini, D., Gr�nthal, G., Shedlock, K.M., Zhang, P., "The GSHAP Global Seismic Hazard Map", Annali di Geofisica, Vol. 42, No.6, p. 1225 - 1230, 1999.

04)
India Meteorological Department, Lodhi Road, New Delhi.

05)
International Seismological Centre, On-line Bulletin, http://www.isc.ac.uk/Bull, Internatl. Seis. Cent., Thatcham, United Kingdom, 2001.

06) IS 1893 (Part 1): 2002 Indian Standard Criteria for Earthquake Resistant Design of Structures Part 1 General Provisions and Buildings (Fifth Revision).

07) Mathur, S.M., "Physical Geology of India", National Book Trust of India, 1998.

08) Rao, B. Ramalingeswara and Rao, P. Sitapathi, "Historical seismicity of Peninsular India", Bulletin of the Seismological Society of America, Vol. 74, No. 6, pp.2519-2533, 1984.

09)
Tandon, A.N., and Srivastava, H.N., "Earthquake occurrence in India: Earthquake Engineering (Jai Krishna Vol.)", pp. 1 - 48, Sarita Prakashan, Meerut, 1974.

10)
U.S. Geological Survey, National Earthquake Information Center, Golden, CO, USA.

11) Johnston, A.C., Report TR-102261, Electric Power Research Institute, Chap.3, 1993.

12) CISRG Database, (Statistical database related to Induced Seismicity), 11753 Canfield Road, SW, Calgary Alberta T2W 1J6

13) Harvard Centroid Moment Tensor solution.

14) Pacheco, Javier F., and Sykes, Lynn R., "Seismic moment catalog of large shallow earthquakes, 1900 to 1989", Bulletin of the Seismological Society of America, v. 82, no. 3, p. 1306 - 1349, 1992.

15) Bendick, R, and R. Bilham, 1999. A Search for Buckling of the SW Indian Coast related to Himalayan Collision, in Macfarlane, A., Sorkhabi, R. B., and Quade, J., eds., Himalaya and Tibet: Mountain Roots to Mountain Tops: Geol Soc Amer. Special paper 328. 313-322.

16) Wessel, P., and Smith, W.H.F., "Free software helps map and display data", EOS Trans., AGU, 1991, 72, 441, 445.

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