earthquake (M5.0 to 5.9 termed as "moderate")
beneath the upper Myitkyina river valley along the Myanmar-India
on 21 November 2011
at 08:45 AM local time in India and 09:15 AM
local time in Bangladesh. It had a magnitude of Mw=5.8 and
caused minor damage in Assam. Due
to its depth, this earthquake has been felt in north-east India
well as in Bangladesh.
The earthquake was centred
9.3 kms NW of Namkhansi
30 kms NW of Saingkyu (Sagaing), Myanmar,
60.7 kms E of Chhatrik (Sagaing), Myanmar,
84.3 kms NE of Shwelobo (Sagaing), Myanmar,
131 kms ENE of Imphal (Manipur), India,
138 kms ESE of Kohima (Nagaland), India,
248 kms E of Silchar (Assam), India,
S of Dibrugarh (Assam), India,
376 kms ESE of Guwahati (Assam),
508 kms ENE of Dhaka (Dhaka), Bangladesh,
749 kms NE of Kolkata (West Bengal), India.
If you felt this earthquake,
please take the time to fill out a felt report questionnaire.
Due to the depth of this
earthquake it was widely felt in north-east India in the states of
Assam, Arunachal Pradesh, Manipur, Meghalaya, Mizoram and Nagaland. Buildings
developed cracks in eastern Assam and strong tremors were felt at
Jorhat, Golaghat, Guwahati and Tezpur among other places. In Tezpur, people
were woken up by the tremor that was accompanied by a loud noise. In
Arunachal Pradesh it was felt at Namsai. In Nagaland, people ran outdoors at Dimapur.
It was also felt to a lesser extent at Kohima and Mokokchung. Mild
tremors were felt at Siliguri in north Bengal and as far as Kolkata in West
Bengal, India. In Bangladesh, tremors were felt in some parts of the
country including at Dhaka, Sunamganj and Sylhet. In Sylhet, people
went outdoors when the earthquake struck.
This is the largest
earthquake in this general area since
4 February 2011 when a Mw=6.4 earthquake
occurred along the India-Myanmar border. The GFZ and NEIC moment
tensor solutions implicate a thrust fault with a small strike-slip
Earthquake Information Centre (PDE),
India Meteorological Department (IMD), Delhi, India.
Forschungs Zentrum (GFZ), Potzdam, Germany.
Macroseismic information has been compiled by
the ASC from reports by local media and local NGO personnel.
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of India (especially Arunachal Pradesh, Jammu & Kashmir, Himachal Pradesh and Uttarakhand) on the
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