Today brings an end to the short-lived moderating stretch across the Tennessee Valley, but it will definitely be the warmest day this week. Between the high pressure to our south and the approaching cold front over the Midwest, southwest winds will gust as high as 15 to 25 mph today. Accompanied by mostly sunny skies, that will allow temperatures to warm into the mid 50s, and some of us may squeeze out some highs in the upper 50s by afternoon.
As the front approaches during the mid to late evening, we can't completely rule out a few isolated showers across the area. It's not going to amount to a lot, and most of you will stay dry, but don't be surprised if a few scattered showers dot the landscape before moving out near or just after midnight.
Chilly air works in behind the front going into Friday, with daytime highs only in the low to mid 40s. Because of the very cold air aloft associated with the upper-level system driving the cold front through the area, there may be a few passing showers during the afternoon. As temperatures drop Friday evening through early on Saturday morning, some of these isolated showers may change over to a few light snow flurries! We don't anticipate any travel problems or impacts, but don't be surprised if a few flakes are flying.
We may struggle to reach 40 degrees by Saturday afternoon, and for many of us, we may not get out of the 30s for daytime highs. We do start to moderate again though as that deep upper trough starts shifting east of the area going into the start of the new work week. That allows us to warm back into the upper 40s and lower 50s. Then, southwest flow aloft sets up and the cold front that moves through late tonight comes back north across the area next week and as a warm front, only to stall as it goes parallel to that southwest flow aloft. That may set us up for a rainy stretch going into the middle and latter part of next week.