Overview
- Abashiri announced the season's flow‑ice landing at 12:30 p.m. after observers at the Tento‑yama observatory judged the shoreline ice‑covered.
- The assessment found channels closed and ordinary vessel navigation no longer possible.
- The city said the date falls three days earlier than the long‑term average and 16 days earlier than last winter.
- Determinations are now made by Abashiri city and the Okhotsk Ryuhyo Museum, and results are not directly comparable with past JMA data because the observation site differs.
- The declaration signals the start of the area's annual sea‑ice tourism.