Definitely something to this. NS dominant patterns are chaotic- turbulent, with vortices flying around all over the place- very difficult for model guidance to get all the wave interactions and timing correct, which ofc have a big impact on sensible weather. Southern stream dominant patterns tend to be prominent in El Nino years and generally have a "quieter" NS, esp with a NA blocking regime. Just a matter of waiting for a significant SS wave to track eastward and snow on us(hopefully).