If you're looking for a stratosphere feature to watch with meaning, check out the wave 1, post-split, in 7-10 days. It's been showing up a while and the vortex is actually tilted in an unstable fashion for a few days. Remember my research on Nov wave 1 activity, btw. #AleutianLow

— Anthony Masiello (@antmasiello) November 19, 2018