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M6.6 West Island Earthquake, India


30 March 2010


NW of West Island


16:54:48 UTC  


13.616 (PDE)


92.958 E (PDE)


45 kms (PDE)


Mw 6.6 (PDE); M? 6.8 (IMD)

Additional Info

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A strong earthquake (M6.0-6.9 termed as "strong") struck the northern part of the Andaman Island chain to the north-west of West Island that lies off the west coast of North Andaman Island, India, on 30 March 2010 at 22:24 IST or 22:54 BST. The earthquake had a magnitude of Mw=6.6 and caused some damage and injuries in the Andaman Islands.

If you felt this earthquake in India, Myanmar, Bangladesh or Thailand, please let us know!

The earthquake was centred 4.2 kms NW of West Island (Andaman Islands), India,
13.8 kms WSW of Landfall Island (Andaman Islands), India,
18.4 kms WNW of Cape Price (North Andaman Island), India,
35.7 kms NNW of Ariel Bay (North Andaman Island), India,
41.8 kms NNW of Diglipur (North Andaman Island), India,
57.2 kms SW of Little Coco Island (Ayeyarwaddy), Myanmar,
76.4 kms N of Mayabandar (Middle Andaman Island), India,
122 kms N of Rangat (Middle Andaman Island), India,
222 kms N of Port Blair (South Andaman Island), India,
533 kms SW of Yangon (Yangon), Myanmar,
974 kms SSE of Chittagong (Chittagong), Bangladesh,
1,008 kms SE of Bhubaneswar (Orissa), India,
1,146 kms SSE of Dhaka (Dhaka), Bangladesh,
1,364 kms E of Chennai (Tamil Nadu), India.

At least ten people were injured, mainly in Diglipur, after they jumped out of buildings during the earthquake. Many private and public buildings, including the Assistant Commissioner's office building, developed cracks and goods were damaged in Diglipur where the shock was "heavily" felt. Power was knocked out leading to some confusion immediately after the earthquake. Landslides and cracks in the earth were also reported from the Diglipur region. The Ariel Bay Jetty, damaged in the Mw=6.5 Diglipur earthquake in 2002, and the Kalpong Dam were undamaged in the latest earthquake. Tremors were felt strongly at Mayabander where people ran outdoors in panic. The earthquake was also felt throughout North and Middle Andaman Islands and as a "gently swinging" in Port Blair on South Andaman.  In parts of Port Blair and in its suburbs, people went outdoors as a safety precaution.

In the Subcontinent, tremors were felt at Bhubaneswar, Cuttack, Jagatsingpur, Jajpur and Khurda in Orissa where there was some panic and people ran outdoors as furniture rattled. Rumours of an impending earthquake kept many people outside their homes in Jagatsingpur, Kendrapara and Paradeep. Elsewhere the earthquake was felt at Anakapalle, Srikakulam and Vishakhapatnam in Andhra Pradesh, at Bengaluru in Karnataka, at Chennai in Tamil Nadu, at Kolkata in West Bengal and well as at Gulshan and Tejgaon in Dhaka, Bangladesh. In Chennai, tremors were strong enough to wake up sleeping residents in T Nagar and in an isolated instance set off a car alarm. Elsewhere in the city, it was felt at Besantnagar, Kottivakkam, Nungambakkam, Purasawalkam and Teynampet,  In Vishakhapatnam it was strong enough to shake furniture and some eyewitnesses said it lasted as long as 3-minutes. It was felt at Ayyakapalem, Dandu Bazaar, Gajuwaka, Gopalapatnam, Kancharapalem, Lawsons Bay Colony, Maddilapalem, Madhavadhara, Marripalem, Murlinagar,  MVP Colony, Nakkavanipalem, NAD Junction, Ramakrishna Beach, Seethammadhara and Venkojipalem.

At 22:55 PM IST (17:25 UTC), within 30-minutes of this earthquake, INCOIS issued a "tsunami watch" for West Island, Landfall Island, Flat Island, North Sentinal Island as well as Port Blair anticipating a local tsunami with an expected wave height less than 45-centimetres, within an hour of the earthquake. This "watch" was later cancelled at 23:45 PM IST (18:15 UTC).

01) National Earthquake Information Centre (PDE), Golden, USA.

India Meteorological Department (IMD), Delhi, India.
03) Geological Survey of India (GSI), Kolkata, India
04) Indian National Centre for Ocean Information Services (INCOIS), Hyderabad, India.
05) Macroseismic information has been compiled by the ASC from reports by local media and local NGO personnel.

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Page Updated: 07 Apr 2010 | Website Disclaimer

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