December 2021: two top climate models, the ECMWF and UKMET, favor higher heights across higher latitudes.

Both happen to hang a trough over the eastern U.S. 🌨

It’s still too early for finer details, but it would appear a troposphere-stratosphere connection is *possible*. pic.twitter.com/bGVW1aUuHa

— Ben Noll (@BenNollWeather) September 14, 2021