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Powerful 8.0 Earthquake Off Alaska Triggers Tsunami Advisory

All 150 residents of Adak on Alaska's Aleutian Islands have been evacuated after an 8.0-magnitude quake struck in the Pacific Ocean on Monday.

Last updated on June 23, 2014, at 7:27 p.m. ET

Posted on June 23, 2014, at 7:27 p.m. ET

UPDATED — June 23, 9:05 p.m. ET:

A powerful 8.0-magnitude quake struck shortly before 1 p.m. local time Monday, west of Alaska's Aleutian Islands at a depth of about 71 miles, the U.S. Geological Survey and the National Tsunami Warning Center said.

A view of Hawadax Island in the western Aleutian Islands.
Handout / Reuters

A view of Hawadax Island in the western Aleutian Islands.

The earthquake triggered a tsunami warning for coastal areas of Alaska from Nikolski to Attu.

Via google.com!4m13!4m12!1m5!1m1!1s0x57af061ffa8e794d:0xbdd299f23bda021c!2m2!1d-168.8677778!2d52.9380556!1m5!1m1!1s0x58483ec0ee503b47:0x3e241e18f518c2fd!2m2!1d172.8904825!2d52.876

The tsunami warning for this area was later canceled.

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Small #Tsunami detected on the tide gauge in Adak, Alaska. http://t.co/jBLCwx2eOJ

Brad Panovich@wxbrad

Small #Tsunami detected on the tide gauge in Adak, Alaska. http://t.co/jBLCwx2eOJ

12:26 PM - 23 Jun 14ReplyRetweetFavorite

Coastal flooding and powerful currents would hit the region for hours after the wave arrives, the U.S. National Oceanic and Atmospheric Administration warned.

The small town, Adak, evacuated its 150 residents to a shelter about 600 feet above sea level, City Manager Layton Lockett told CNN.

At 2pm, #Adak reported water leaving harbor. People heading to higher ground. Any updates are appreciated from Adak #Alaska #Tsunami

NWS Alaska Region@NWSAlaska

At 2pm, #Adak reported water leaving harbor. People heading to higher ground. Any updates are appreciated from Adak #Alaska #Tsunami

12:20 PM - 23 Jun 14ReplyRetweetFavorite

A less severe warning for a tsunami advisory was in effect for coastal areas of Alaska from Unimak Pass to Nikolski.

Via google.com!4m13!4m12!1m5!1m1!1s0x57aab2f8681a5cc9:0x96476537d086ceb2!2m2!1d-164.9205556!2d54.3336111!1m5!1m1!1s0x57af061ffa8e794d:0xbdd299f23bda021c!2m2!1d-168.8677778!2d52.93
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