Bias-corrected CFSv2 & GEFS 35-day concur... with the zonal winds at 10 hPa heading toward record-strong territory in both forecasts for early December. 60 m/s @ 10 hPa 60°N is a fairly rare event (daily top 10%) if it does happen. https://t.co/rdRBVjFPGc pic.twitter.com/T2daElO1jB

— Dr Simon Lee (@SimonLeeWx) November 11, 2020