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M5.3 Koyna-Warna Earthquake, 2000


5 September 2000


SE of Helwak, Maharashtra


00:32:43 UTC (06:02:43 IST)


17.332 (ISC)


73.790 E (ISC)


10.0 kms (ISC)


Mw 5.2 (NEIC); ML 5.0 (IMD)

Additional Info


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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.

The earthquake was centred 7.4 kilometres SE of Helwak (Maharashtra), India,
12.1 kilometres WSW of Patan (Maharashtra), India,
35.6 kilometres SE of Chiplun (Maharashtra), India,
40.9 kilometres WNW of Karad (Maharashtra), India,
65.1 kilometres NE of Ratnagiri (Maharashtra), India,

83.9 kilometres NW of Kolhapur (Maharashtra), India,
133 kilometres SSW of Sangam, Pune (Maharashtra), India,
220 kilometres SSE of Santa Cruz Airport, Mumbai (Maharashtra), India.

Damage from the tremor was considerable in areas surrounding the epicentre in Sangli District and the border region of the districts of Kolhapur and Satara. In the Chandoli area some 7-10 houses were damaged. Most of the damage was concentrated in south-western Satara district. In Patan taluka several villages were badly damaged. Wall collapses were reported from Humbarli, Kakisare, Kasani, Khanderwale, Raule, Sanbur, Shirshinge as well as at Bhave, Ghot, Kushi and Zalar in the Tonale area, at Gawliwada near Kakisare and at Kusrud in the Murna area. While other damage occurred at Gadhavkhop, Helwak,  as well as at Chavanwadi, Dhebewadi and Virewadi in the Chaphal area and at Ambegarh and Nihimbe in the Koyna area. In the Warna dam area, 6 houses were damaged. Building No. 4 in the Warna Dam Project was damaged. The strong motion accelerograph at the Koyna Dam recorded an average peak acceleration of 0.13g. In the north-western part of Kolhapur District, in Shahuwadi taluka, wall collapses were reported from the villages of Dhakale, Dhanagarwade, Sonali and Man while in the Bhudargadh taluka, some houses developed cracks.

In the city of Sangli, people fled into the open. In many instances, household articles like kitchen utensils fell down. Strong tremors were felt at Satara, Karad, Mahabaleshwar, Patan and Koyna. People took to the streets in panic and stayed there for a couple of hours as scores of aftershocks followed. In Karad, glass windows of several new constructions were broken. In Kolhapur district the shock was felt for around 30 seconds. In Kolhapur city, people rushed onto the streets after feeling the quake. In Pune district, the earthquake was felt for around 15-20 seconds. It was felt strongly in Pune, Bhor, Manchar and Yavat. In Pune, several people rushed into the open after feeling the tremor. It was felt at Katraj, Vishtranwadi, Yerwada, Nagar Road, Hadapsar, Parvati, Camp, Kothrud, Shankarshet Road and Bund Garden areas; mostly by people living in medium-high-rise apartment buildings. At Bhor, the roofs of "pendols" for the Ganesh Festival constructed of tin sheets were heard rattling. At Yavat, in Daund taluka it was felt for 24-seconds and the wall of a house was cracked. The most significant damage in Pune district was at Jejuri, in the southern part of the district. Several stones fell from a minaret (or a lamp tower) in the Khandoba Temple. This structure is nearly 300 years old. Another minaret was slightly damaged.

In Solapur district the shocks felt were of mild to moderate intensity. They were felt throughout the district. In Solapur, the quake was felt in Sakhar Peth, Manik Chowk, Jodbahvi Peth, Mangalwar Peth, Pachya Peth and Lashkar areas. It was also felt at Mohol, Pandharpur and Akalkot. Tremors were felt strongly in these two coastal districts of Ratnagiri and Sindhudurg. The section of railway between Koranjade and Kudal was closed temporarily as safety checks were carried out on the rails, tunnels and bridges by KRC engineers. No landslides were reported. Trains running on the Konkan Railway were delayed due to the quake but rail traffic was resumed after 2-3 hours. The trains held up were the Netravati Express, Konkankanya Express, Mandovi Express, Mangala Express, Dadar-Ratnagiri Passenger, Hapa-Cochin Express and Cochin-Gorakhpur Express, which were diverted on Konkan Railway route.

Tremors of mild intensity were also felt in Mumbai. They were felt at Colaba, Santa Cruz and several other northern suburbs and were mostly felt by people living in high-rise apartment buildings. The quake was also experienced in neighbouring Thane district, including at Thane and Kalyan. Light tremors of very short duration and very mild intensitywere felt in the districts of Nashik and Ahmednagar.

In neighbouring Karnataka, tremors of mild to moderate intensity were felt in northern part of Belagaavi district, in the Sambra area for 15 seconds. The tremors lasted about 15-seconds and were reported in the districts of Dharwad, Haveri, Gadag and Belagaavi. According to reports from Hubballi and Belagaavi, people ran out of their houses in panic as mild tremors were felt. It was also felt strongly in northern and coastal areas of Goa and in some places people even came out into the open on feeling the quake. It was felt mildly in southern Goa.

Harvard Centroid Moment Tensor Solution (HRV), Harvard, USA.
02) International Seismological Centre (ISC), Berkshire.
India Meteorological Department (IMD), Delhi.
04) Macroseismic information has been compiled by the ASC from reports by local media and local NGO personnel.

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