Aleutian Islands - A strong earthquake measured 6.6 on Richter scale in the North Pacific about 40 miles east of the village of Nikolski and 850 miles southwest of Anchorage on Sunday night.
According to George Carts, a seismologist at the Alaska Tsunami Warning Center, the quake was felt strongly in the towns of Unalaska, Dutch Harbor and Nikolski which are located on western islands in the Aleutian chain for three minutes. Nikolski had very minor damage after the quake, with items knocked off shelves and small item damaged..
The official said that the 20 aftershocks; one measured 5.0 on the scale was not powerful enough to cause a tsunami.
The quake hit at 7.01 p.p. PST with 6.6 magnitude that can cause severe damage if it hits populated areas. thus, there were no reports of injuries or major damage.
the Richter scale measures ground motion and is recorded on seismograph; each increase of one number means a tenfold increase in magnitude; example, 7.5 is 10 times greater than 6.5. Official categories: 3.5 can cause slight damage; 4, moderate damage; 5, considerable damage; 6, severe damage; 7, major earthquake, can cause widespread heavy damage; 8, great quake.
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