Powerful quake off Indonesia

A tsunami alert was issued for the entire Indian Ocean Wednesday after a powerful 8.7-magnitude earthquake was recorded off Indonesia’s coast.

The U.S. Geological Survey said the quake was centered 20 miles beneath the ocean floor and 308 miles from the provincial capital of Banda Aceh.


The quake is in a similar location and of a similar magnitude to the 9.1-magnitude tremor on Dec. 26, 2004 that triggered a tsunami in the Indian Ocean, killing 230,000 people, nearly three-quarters of them in Aceh province.

Reports on Twitter said Wednesday’s tremors were felt in Singapore, Thailand, Malaysia and India. High-rise apartments and offices on Malaysia’s west coast shook for at least a minute.

India issued a tsunami alert for its eastern coast, causing panic and sending people fleeing onto the streets.  Hundreds of office workers in the Indian city of Bangalore left their buildings, workers there said.

Indonesian television showed pictures of similar panic in Banda Aceh.

Indonesia’s disaster mitigation agency is sending a rescue team to Aceh province, and said electricity had been cut to the area.

“The quake was felt very strongly. Electricity is down, there’s traffic jams to access higher ground. Sirens and Koran recitals from mosques are everywhere,” a spokesman for Indonesia’s disaster mitigation agency told Reuters.

NBC News reported that quake has been rated as a ‘5’ on the USGS MMI scale, which measures the physical intensity of an earthquake as felt on the ground. A strength 5 quake is defined as: “Felt inside by most, may not be felt by some outside in non-favorable conditions. Dishes and windows may break and large bells will ring. Vibrations like large train passing close to house.”

India’s tsunami warning center said waves measuring almost 20 feet were expected along parts of its eastern coast, which was heavily hit by the 2004 tsunami. Smaller waves were expected to hit the remote Andaman and Nicobar islands.

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The quake was also felt in Sri Lanka and the southern Thai holiday island of Phuket, both of which were hit hard by the 2004 tsunami.

Indonesia straddles a series of fault lines that makes the vast island nation prone to volcanic and seismic activity.

According to the USGS, the 2004 quake struck about 155 south-southeast of Banda Aceh at a depth of 18.6 miles. Some 227,898 people were killed or missing presumed dead and about 1.7 million were forced out of their homes after the  tsunami affected 14 countries in Asia and East Africa.

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“This is the third largest earthquake in the world since 1900 and is the largest since the 1964 Prince William Sound, Alaska earthquake,” the USGS said in its summary about the 2004 earthquake.

“The tsunami caused more casualties than any other in recorded history and was recorded nearly world-wide on tide gauges in the Indian, Pacific and Atlantic Oceans,” it added.

This is a breaking news story. Please check back for updates.

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