Scientists said ash continued to billow from a volcano in Russia's Far East, which could have an effect on international air traffic in the region. The Shiveluch volcano on the Kamchatka peninsula was pushing ash as high as 6,000 meters (20,000 feet) and creating "light-intensity" tremors on the ground lasting as long as 40 minutes, UPI quoted the Far Eastern Institute of Volcanology and Seismology as saying in a written statement. No towns in the area were considered threatened by the ash fall. Shiveluch has been erupting periodically since 2009. The size of the mountain's crater has grown 50 percent in that period, RIA Novosti said Sunday.
