Arctic #PolarVortex will be quite far from its climatological mean state this week, due to #SSW.

The vortex center will be above Ukraine (at 50°N) on Thursday. That's >4500 km displacement from the North Pole. Furthermore, polar night jet will blow in the subtropics, at 30°N. pic.twitter.com/bejnFfg7v8

— Mika Rantanen (@mikarantane) January 7, 2019