A powerful earthquake measuring 6.1 on the Richter scale on Saturday jolted the US state of Alaska, the US Geological Survey (USGS) reported.
The earthquake occurred at 9.09 am., with its epicentre some 259 km southwest of Anchorage, Alaska's largest city, and with a depth of 94.5 km, the USGS said on its website.
The West Coast and Alaksa Tsunami Warning Centre, however, confirmed that no tsunami was expected as a result of the quake.
The Anchorage Daily News and other US media said there was no immediate report of casualties or damage.
Historical records show that a massive earthquake of magnitude 9.2 struck Alaska March 27, 1964, the largest one in North America and the second largest ever recorded in the world.
It triggered a tsunami wave that struck the US Pacific coast and killed more than 100 people in Alaska alone.