Ugh... I had to spend all my time forecasting for Yankee Territory today. It's a good thing things are relatively quiet in the South. Cold, but mostly quiet. How cold is it? Well, the afternoon temperatures in Virginia and the Carolinas are running mostly in the 40s and low 50s, more typical of December and January. Also, it did indeed snow for a while today in the mountains in West Virginia, and at lower elevation than I thought, down to 3500 feet. I suspect the higher peaks around there have a couple of inches on them.
In general, the chilly air mass is going to hang on for another day or so in the Southeast, but temperatures are going to moderate. Later this week, one front after another will move through, spaced out every couple of days. The air masses behind the fronts won't be as cool as the one we're dealing with now, but cool enough to knock temperatures back for a while. The farther east you are, the cooler it can get. But, the cool will only last a day before warmth surges northward ahead of the next front. So, temperatures will be on a roller coaster. The fronts won't have much moisture returning in front of them, so don't expect much rain.
Most of the area west of the Mississippi will miss out on the fronts, which will stall near the Arklatex. So, it will get progressively warmer and more humid back in Texas. Eventually, it will get summery again by the end of the week. The warmth and humidity will fuel some big-time thunderstorms when the next significant storm reaches the area over the weekend. The storm in question is an upper low west of California now. It looks as though it will cause storms later Friday or Friday night in West Texas, then into Oklahoma and North Texas on Saturday. Of course, the timing is uncertain this far out. But, the computer models are showing enough shear to be worried about a tornado outbreak. For now, I don't see another big shot of cold coming for a while, in fact, the end of the month looks pretty warm.
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While the East Coast remains cool and rainy for a while, Texas and Oklahoma will dry out and heat up. One source of moisture down the road for the middle of the nation could be the tropical systems in the East Pacific.
A slow moving upper low and a steamy air mass beneath it will keep drenching thunderstorms near the East Coast the next several days while areas farther west largely dry out. There's plenty of tropical stuff to watch as well.
The southern Plains will see less rain, maybe very little the next several days, hooray! Meanwhile, the Southeast will see wetter weather, hooray!
In the southern Plains the threat for flooding rain continues into the weekend before finally shifting east. The Southeast could use the rain but let's hope it's not too much of a good thing.
The weather pattern will remain favorable for wet but maybe not as wet weather in the Southern Plains while the Southeast gradually moistens up. Time to take a peek a the tropics again, too.
A minor change in the upper level pattern will give the southern Plains a brief respite from the heavy rains, which will shift to the east somewhat. Eventually, we'll moisten up much of the Southeast as a result.