Ensemble-mean MSLP forecasts for winter 2020-2021 from the October @CopernicusECMWF update.
— Dr Simon Lee (@SimonLeeWx) October 13, 2020
The December forecast for blocking near Greenland/negative NAO in ECMWF, Météo-France & UKMO forecasts is rather eye-catching... ❄️ pic.twitter.com/kqvpFOrwSe