TSA recent forecast discussion. They're definitely buying into it.
"Now to the meat of this forecast, and the bad news. The GFS and
ECMWF have remained amazingly consistent, especially given the
time range of the forecast, regarding the next storm to affect the
Plains Sunday into Monday. Both models paint considerable QPF over
a deepening arctic air mass over the region. Snow ratios from the
NBM look underdone given how cold this air mass is, and will thus
use a 15-20 to 1 ratio from the GFS/EC. Since the snow will be
more powdery, winds will be blowing from the arctic high building
south, and snow rates could be heavy at times, the potential is
there for a highly impactful winter storm early next week. Travel
could be shut down over a large area. Power outages could occur
when winds pick up due to the residual ice on the lines from the
recent weather. So this storm has the potential to be a big deal.
Forecast snow amounts were increased.
Another system could affect the region by next Wednesday,
potentially bringing more snow, but we have time to watch this.
This week could go down in the memory books weather wise, for
length of time below freezing and the winter weather impacts,
among other things. There is hope on the distant horizon however.
This blocking pattern that has supported arctic intrusions into
the CONUS is expected to break down by the latter part of next
week and become progressive. This should lock the cold air to the
north and allow for more downslope flow and warmer temps. But,
again, this is probably a week or more away."