The weather for most of the country has calmed for this weekend, and cold air has settled in to much of the country.
There is a LOT of variability this coming week with what could happen through Christmas, but there are 3 vague potential snow threats for SE Tennessee / Chattanooga showing on the Wx Models!
Don't get to excited yet, because I'm just highlighting the potential. Fair chance that NONE of these materialize, but I'll list out the triple threat that I see, and my current thinking. Individual probabilities are low, but I'd say cumulative chance of seeing any snow in the sky through Christmas day might be as much as 60% right now, which is way higher than usual!
1. Monday afternoon - midnight - ish.
This has shown on most of the weather model runs for the last 2 days. However, it's unlikely to bring accumulation. Cold air being pushed out as we get under a warm front for a quick changeover event.
2. Thursday / Friday - ish
This even has shown on GFS for multiple days - and has been more well signaled than the other. However, the details swing wildly from run to run, showing the high variability. This is the long wave with MUCH higher potential for...well everything. But certainly out there to be a big bust too! Expect...something, but don't bank on snow. This will be a HUGE travel interrupter for the eastern part of the U.S. so be ready.
3. Christmas Day
This has actually shown up on the last few model runs as well, as consistent snow from a shortwave. Don't bank on it - it's way way too far out, but most of the runs dig cold air deeper after the prior storm, and I'd put it in to the plausible category.
