Current temperatures this morning are in the mid to upper 50's and will warm to high's around 80 degrees. Though it'll be warm for this time of the year, we'll see a quick turn around for Friday. A seasonably cold air mass is working through the Midwest and will find its way into East Tennessee by Friday morning.
A look at the surface map for tonight shows the front beginning to work in. Along with the front, we will likely see a few isolated showers. By mid-morning tomorrow, things should dry out and cloud cover will slowly work east as well. To the west, a high pressure system will fill in providing sunny skies and temperatures slowly nearing average by Monday.
Looking at model guidance, showers will arrive by the midnight hour tonight and work out by the morning, Friday. With little moisture associated with the front this far south, precipitation will be hit or miss across the area. At best, I expect a few hundreds of an inch before this line works out. As we get into the day tomorrow, cloud cover and the chilly temperatures will be the main feature. A concern we are eyeing into Saturday is the potential for frost. Overnight low's Friday will be in the mid to upper 30's. The biggest concern is for those in the foothills of the Smokies and to the north. If you are located in the northern half of East TN, I would take the proper precautions for your plants overnight Friday. I know for many the growing season is coming to an end, but for those still hanging on, warmer temperatures will be back in the forecast.
That will wrap it up for today...much cooler air will find its way in to end the work week tomorrow, but above average temps hang around this afternoon.
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