This is very early in the game and uncertainties abound.
We have the -40's there, bordering on -50. Zoom in on this and you'll see the classic clairslide lobate pattern forming. I don't know if it can cut through the mess, perhaps a solid -50 would be best, but there is a plume pushing it out. You can only get one really big clairslide at a time because it empties the whole Arctic.
The first hint of strength will come from Edmonton when they get -50 and they show all the photos of clothes freezing on the line. It will end with -20 in Texas, if it goes. So, there's a 10% chance that natgas prices will zoom.
If that plume rides down at 45 degrees, then it is a classic Alberta clipper.
ps. it has hit Edmonton with about -20. Nothing big yet. Yellowknife is going to -40.
pps. it's fighting a rising Gulf plume, but still going.