Strong Quake of 6.7 Magnitude Rocks Alaska's Anchorage, Tsunami Warning Issued

A 6.6 magnitude earthquake has rocked buildings in Anchorage and caused lamp posts and trees to sway, prompting people to run out of offices and seek shelter under office desks.Photographs posted to social media sites showed damage that included collapsed ceiling tiles at an Anchorage high school and buckled roadway pavement in places.
Cereal boxes and packages of batteries littered the floor of a grocery store after the earthquake Tuesday morning that rocked buildings in Alaska’s largest city, and picture frames and mirrors were knocked from living room walls.
Alaska averages 40,000 earthquakes per year, with more large quakes than the other 49 states combined.
Southern Alaska has a high risk of earthquakes due to tectonic plates sliding past each other under the region. According to the U.S. Geological Survey, the Pacific plate is sliding northwestward and plunges beneath the North American plate in southern Alaska, the Alaska Peninsula and the Aleutian Islands.
On March 27, 1964, Alaska was hit by a magnitude 9.2 earthquake, the strongest recorded in U.S. history, centered about 75 miles (120 kilometers) east of Anchorage. The quake, which lasted about 4½ minutes, and the tsunami it triggered claimed about 130 lives.
The U.S. Geological Survey says the earthquake Friday morning was centered about 7 miles (12 kilometers) north of Alaska’s largest city.
An Associated Press reporter working in downtown Anchorage saw cracks in a 2-storey building after the quake. It was unclear whether there were injuries.
People went back inside buildings after the earthquake but a smaller aftershock a short time later sent them running back into the streets again.

No official information on casualties or damages is immediately available. However, social media users claim there were power outages across the city.
​According to the scientific agency, the seismic activity was centred about 7 miles (12 kilometres) north of Anchorage.
As Associated Press reported, their correspondent witnessed cracks in the building. Besides, according to the news agency, people in the city were prompted to run out buildings or seek shelter under their office desks.
Following the quake, a tsunami Warning was announced for coastal areas of Cook Inlet and southern Kenai Peninsula in Alaska.
Though there was no tsunami warning initially, the National Weather Service soon issued a warning for the Cook Inlet area, given the aftershocks.
The initial quake’s magnitude was 7.2 on the Richter scale, followed by 6.6 and 5.8 aftershocks. A high school student in Anchorage recorded the moment of the quake, showing her classmates sheltering under their desks.
The quake reportedly caused “severe damage” to roads, bridges and water pipes, according to the US Department of the Interior. Photos from Anchorage show cracks in the buildings, buckled road onramps, and no power in several areas of the city.
Anchorage is Alaska’s largest city, with 400,000 residents.