31°39'N / 131°1'E / Altitude 173 m / 04:30 2026/05/04, Asia/Tokyo (UTC+9)
From: 2026/05/03, 13:00
To: 2026/05/04, 12:00
(1) Wind Wave Advisory Announcement : 2026-05-03T13:00:00+09:00 Wind of 14m/s or more sustains for over 3 hours at sea or significant wave height is expected to be over 3m.