The infamous 2018 “Beast from the East” is a stark reminder of what an SSW can bring. The disturbance in the stratosphere can be transmitted downward and if this continues to the earth’s surface, there can be a shift in the jet stream, leading to unusually cold weather across Europe and Northern Asia.
https://scitechdaily.com/sudden-stratospheric-warming-may-trigger-beast-from-the-east/

