Met Coal prices are more obscure than most other commodities with daily spot prices. As far as I understand, the spot price is officially adjusted quarterly. A portion of contracts are created on a yearly basis, and some are based on index prices. I don't know if the spot price was adjusted this week based on the news.
I follow 2 met coal companies, Warrior (HCC) and Ramaco (METC). HCC was down 10% for the week, METC was largely flat. METC I follow much more closely, they do not interact with the Asian markets.