Overview
- The JMA projects through 6 a.m. on Oct. 23 up to 180 mm of rain in southern Kyushu and Amami, 150 mm in Okinawa, and 80 mm in the Izu Islands.
- A stationary front stretching from Taiwan across Tanegashima and Yakushima to the Izu Islands, together with a tropical low near the Sakishima Islands, is funneling warm, moist air and destabilizing the atmosphere.
- Officials urge vigilance for landslides and inundation of low-lying areas across the Nansei and Izu island chains.
- The three-month outlook calls for above-normal nationwide temperatures in November, with December near normal but susceptible to abrupt cold spells that could produce heavy snow on the Japan Sea side.
- The forecast links these patterns to a jet stream positioned farther north in November and slightly south from December onward, with precipitation likely normal to higher on the Japan Sea side and normal to lower on the Pacific side.