Arctic blocking will culminate in a 570+dm ridge over the East Siberian Sea next week. This is comparable to the event of Jan 2011, the winter record for that part of the Arctic. For the high Arctic (80°+N) the record was set in Jan 1977 (daily record low AO index of -7.1) pic.twitter.com/6D7HeYuixu

— World Climate Service (@WorldClimateSvc) December 16, 2022