Powerful Earthquake Measuring at least 7.5Mw Strikes Nicobar Islands, India Region
The earthquake, which was epicentered at 7.748°N, 91.938°E and at a depth of about 35km, some 155 km (95 miles) W of Mohean, Nicobar Islands, India, occurred on Saturday, June 12, 2010 at 19:26:50 UTC, USGS/EHP said.
Tsunami Status
The Pacific Tsunami Warning Center (PTWC) initially issued a Tsunami Warning for the entire Indian Ocean, but later downgraded the warning to India region only, and later canceled the alert.
“Sea level readings indicate that a significant tsunami was not generated,” PTWC said.
So far no damage has been reported in the Andaman and Nicobar islands regions, however a total blackout was reported the capital, Port Blair, news reports said.
Aftershocks:
The mainshock was followed by at least two significant aftershocks, with the larger one measuring 5.5Mw, as of posting.
The quake occurred about 660km NNW of the 9.2Mw Indian Ocean quake which occurred in December 2004, triggering the deadly Boxing Day Tsunami.
10-degree Map Centered at 10°N,90°E

EQ Location Map. Source: USGS/EHP. Map enhanced by Fire-Earth.
Earthquake Details:
- Magnitude: 7.5
- Date-Tim:
- Saturday, June 12, 2010 at 19:26:50 UTC
- Sunday, June 13, 2010 at 01:26:50 AM at epicenter
- Location: 7.748°N, 91.938°E
- Depth: 35 km (21.7 miles)
- Region: NICOBAR ISLANDS, INDIA REGION
- Distances:
- 155 km (95 miles) W of Mohean, Nicobar Islands, India
- 440 km (275 miles) SSW of Port Blair, Andaman Islands, India
- 1,155 km (710 miles) SW of BANGKOK, Thailand
- 2,775 km (1720 miles) SE of NEW DELHI, Delhi, India
- Location Uncertainty: horizontal +/- 6.4 km (4.0 miles)
- Sourc: USGS NEIC (WDCS-D)
- Event ID: us2010xkbv
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