All Nippon Airways and Japan Airlines said they will cancel or reschedule many flights to and from airports in the southwestern and western regions Friday, and the irregular scheduling will affect the airlines into the weekend. The Japan Meteorological Agency called Typhoon Shanshan "very powerful" before it made landfall in Kyushu on Thursday morning, but dropped the descriptive phrase in the afternoon. It also downgraded a rare special typhoon warning issued for most parts of Kagoshima Prefecture. At 5 a.m. Friday, the storm was located near Yufu, Oita Prefecture, and was moving slowly northeast with winds of up to 126 kilometers per hour, the agency said, adding that its atmospheric pressure at the center was 992 hectopascals. JR Central will cancel all Tokaido Shinkansen trains between Mishima and Nagoya throughout Friday, the company said, with notification to come later Friday if it can resume the high-speed train service in the remaining sections -- between Nagoya and Shin-Osaka, and Tokyo and Mishima.