First off....a little light snow is making its way through the region this morning. It was even enough to whiten the ground in a few spots.
Highs will be in the 40s today and tomorrow....even a few lower 50s possible in a few places tomorrow, which leads us to....
Our next system...
The low pressure area will generally take a favorable track for interior Carolina snows. However, it looks like for a good portion of the storm (outside of the mountains), the lowest 3000 to 5000 feet of the atmosphere will be a little too warm for snow.
So, I anticipate rain developing in tomorrow afternoon (could be a bit of sleet mixed in very briefly due to some dry air aloft), and the rain will continue at times tomorrow night into Wednesday morning. But, there is still some snow potential with the system....see below.
Cold core upper air low....weatherman's woe....
A cold core upper air low will trail just behind and northwest of the main surface low. One of the main features of an upper air low is very cold air aloft. Time and time again, I have seen these systems put down snow, even when not even remotely foretasted to do so by modeling.
So, I think the potential for a period of wet snow is still very much there from north and central Mississippi, north Alabama, parts of Tennessee, northeast Georgia, the Upstate of South Carolina, then into the foothills and Piedmont of North Carolina.
For North Carolina, the best chance for this period of wet snow will be Wednesday afternoon into Wednesday evening.
You really have to watch those upper level lows for surprises. It is quite possible that some areas within the corridor I described above could see a period of heavy snow with multiple inch per hour accumulation rates, but that would be in a limited area, and could be anywhere along the track of the low.
But that snow potential is entirely dependent on dynamic cooling....in other words, cold air brought down from aloft due to heavy precip. This snow potential is tied directly to the upper air low track, and it is a deal where if you are just north or just south of the track, you wind up with some rain while spots right under it get snow.
At any rate, that's the basic idea. Some good rains look possible from later tomorrow into Wednesday morning, then we will see how the potential for some back side snow works out for somebody in the region.
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