Upset at myself for not spotting this -NAO sooner, esp since it's similar to this past Dec (doh! 🤦‍♂️). Urals high setting up ahead of this potential SSWE & drop in AAM makes it easier for this block to retrograde to Greenland + encourages MJO development over the Indian Ocean pic.twitter.com/5i6FMD1L0h

— Eric Webb (@webberweather) January 18, 2023