Like spokes on a tire, we have to tread very carefully here. See what I did there? LOL. Cold without snow is just a waste in my opinion. The cold talked about here on the Arkansas Weather Blog for at least a week now is here and it's here to stay for at least the next 7 days. I can't help but think, at some point, moisture is going to get involved and the overnight run of the Euro even hints at that, but I'm not completely sold on it right now. I'll have more on that down below. Nevertheless, right now, the flow of air around the main vortex in southern Canada is overpowering everything. The highly amplified pattern is making the cold, dry air overwhelm areas east of the Rockies.
The vortex over southern Canada is just sitting and spinning. You have to think about this like it's a tire on a bicycle. Each spoke rotating (counterclockwise) around it is a surge of cold air. Between each arctic high is a brief and minor warm up. Also, each surge will have the potential to bring strong winds both ahead and behind of it. This will not only make the fire danger worse, but bring very cold wind chill values. As a matter of fact, a wind chill advisory is in effect for Thursday across northern Arkansas as the "feels like" temperature goes well below zero.
According to the European model here's the cold air schedule
2. Late Sunday
3. Next Wednesday January 29th
4. If you believe the GFS, the following weekend as well.