The Meteorological Agency on Thursday forecast heavy snow for mountainous parts of the Kanto-Koshin region, or Tokyo plus Yamanashi and Nagano prefectures, toward early Friday morning.
Heavy snow is also forecast for the northern and central mountains of the Kinki region from Thursday night to Friday noon.
For the 24-hour period ending at 6 p.m. Friday, snowfall is expected to reach a maximum of 40 cm in Kinki’s northern mountains, 30 cm in the central mountains, 20 cm in the mountainous areas of northern Kanto and northern Nagano, and 15 cm in Kinki’s southern mountains.
In the Kanto plain and the southern part of the Koshin region, which comprises Yamanashi and Nagano, only 5 cm of snow is expected, with 3 cm predicted for Tokyo’s 23 wards.
According to the agency, a developing low-pressure system off the Pacific coast between the waters of the Kii Peninsula and eastern Kanto brought snow and rain on Thursday to much of western and eastern Japan.
Japan Airlines canceled 50 flights and All Nippon Airways canceled 46 flights, affecting more than 10,000 passengers.
In addition, parts of the Chuo Expressway were closed to vehicles without winter tires or snow chains.