The North Atlantic-European weather regime ensemble forecast shows a rapid buildup of Greenland Blocking soon with the weather regime index (IWR) exceeding 3 (!). Looking back at 40 years, this rarely occurred and would be off the scale. #LSDPatKIT pic.twitter.com/oW7fU2QFlZ

— Seraphine Hauser (@HauserSeraphine) November 30, 2022