#S2S North America undergoes a significant pattern change this week, with much warmer conditions for the central and eastern North America with cooler, stormier weather for the West.

But... could we see a return of the cold in January 2023??? A somewhat technical 🧵 1/ If you recall, I talked about how a phenomenon called lower stratospheric reflection was a contributor to our recent massive cold air outbreak (several other factors in play too). Well, the GEFS is once again hinting at more wave reflection possible. 2/