The newest ensemble plume of zonal mean zonal wind at 10 hPa has shifted towards stronger #PolarVortex. Ensemble mean stays above normal for the next 46 days.

In the troposphere, this is reflected as a tendency to NAO+ regime. https://t.co/AZbsNX4KaT pic.twitter.com/lh6B4Nsj3P

— Mika Rantanen (@mikarantane) October 26, 2020