A tsunami alert was issued in the Pacific after an earthquake of magnitude 8 struck Russian coast, AFP reported citing USGS on Wednesday.The United States Geological Survey (USGS) reported that the earthquake struck about 85 miles (136 kilometres) east of Petropavlovsk, located on Russia’s Kamchatka Peninsula. The quake occurred at a depth of 12 miles (19 kilometres). No damage has been reported as of now. The US authorities issued a tsunami advisory for parts including Alaska, while Hawaii, was put on a low level warning of tsunami watch.Japan’s meteorological agency also issued a tsunami advisory, cautioning that waves of up to three metre could reach the country’s Pacific coast. The agency said, “tsunamis will strike repeatedly. Do not enter the sea or approach the coast until the warning is lifted.” Earlier, the advisory cautioned of waves up to one meter.The quake occurred roughly 250 kilometres from Hokkaido and was felt only mildly, according to NHK television. University of Tokyo seismologist Shinichi Sakai told the agency that even a distant earthquake can trigger a tsunami in Japan, especially if its epicenter is shallow.Russia’s Kamchatka Peninsula also experienced a series of five powerful offshore earthquakes in July. The strongest, measuring 7.4 in magnitude, occurred at a depth of 20 kilometres and was located about 144 kilometres (89 miles) east of Petropavlovsk-Kamchatsky, a city of 180,000 residents.