Unusual cold wave triggers earliest ice formation on the Han River since December 12, 1946.
16 Dec 2017 – A five-day cold spell has led to ice formation on the Han River one month earlier than expected. The ice formation was observed at the Han River Bridge at dawn yesterday, according to the Korea Meteorological Administration.
Freezing of the Han River occurred 29 days earlier than the usual (Jan 13) and even 42 days earlier than last year (Jan 26).
Usually, ice formation on the Han River occurs if the low morning temperature in Seoul falls below minus 10 degrees Celsius for three consecutive days and remains below zero during the day, and that is exactly what happened.
The low temperatures of the morning in Seoul from Monday to Thursday were minus 11 C, minus 12.3 C, minus 12 C and minus 11.2 C. The sub-zero temperatures continued during the days.
Thanks to Bruno for this link