The long-awaited flip to +NAO appears to be finally under way as a powerful low develops north of the Azores. It’s pretty cool how this is directly related to the extreme cold air outbreak over the U.S. (+NAMT —> extended NATL jet —> enhanced cyclogenesis near Iceland) pic.twitter.com/f0mCyiytHE

— Deelan Jariwala (@WxTca) January 23, 2025