Typhoon 30 was east of the Philippines on October 19. At noon, Japan's weather agency classified it as large and very strong, with a central pressure of 945 hPa.
Sapporo's AMeDAS table recorded Rikubetsu at −4.3°C at 06:25 on October 18, Utanobori at −4.1°C and Numakawa at −3.9°C. TV Asahi said more than half Japan's observation points recorded their lowest temperature that autumn, especially in northern and eastern Japan.
Clear skies covered much of Japan on October 12, the last day of a three-day holiday. TV Asahi showed tourism and sport, including autumn leaves at Zao in Yamagata.