East Hawaii News

No Pacific-Wide Tsunami From Aleutian Islands Quake

August 30, 2013, 8:51 AM HST
* Updated August 30, 9:15 AM
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No tsunami threat to Hawaii was generated by a strong earthquake that struck the Aleutian Islands this morning, the Pacific Tsunami Warning Center in Ewa Beach, Oahu, said.

The center said the tremor with a preliminary magnitude of 7.0 struck at 6:25 a.m. Hawaii time.

Its epicenter was 56 miles east-southeast of Adak, Alaska, at a depth of about 21 miles, the US Geological Survey said.

The location was to the east of a 6.9-magnitude temblor that struck the Aleutians on Sept. 26, 2012.

The island chain was also the source of an 8.6-magnitude quake on April 1, 1946 that caused widespread damage in Hilo and killed 159 people in Hawaii and six in Alaska.

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The seismically active Aleutian archipelago extends more than 1,800 miles from the Gulf of Alaska in the east to the Kamchatka Peninsula in the west.

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It marks the region where the Pacific plate subducts into the mantle beneath the North America plate, a process which has created the island chain and the deep offshore Aleutian Trench.

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