Highlights for today will mainly be the temperatures. Highs will continue to warm thanks to high pressure, with temps topping out around 60 degrees. Moving forward, temperatures will continue to warm with showers arriving Thursday. These will mainly come toward the evening and into the overnight, followed by scattered activity Friday, then more widespread into Saturday.
Temperatures will be VERY warm for this time of the year. We will continue to warm through Saturday, with highs to start the weekend upwards of 30 degrees warmer than average. Looking at the graphic below, this compares average temperatures to those of climatological norms. Some locations across Western and Middle TN/KY will be 25 to nearly 30 degrees above normals. A stout cold front will arrive with this system, bringing much cooler air in for Sunday. For reference, the record high Saturday the 18th is 73 degrees (Knoxville). Though I don't think this will be broken, highs could run close to the 70 mark for parts of the Central Valley.
Looking at 48-hour rainfall totals, moderate to heavy rainfall will set up this weekend. A stalled boundary will set up to our north and west, working very slowly south and east toward early next week. As it does so, upwards of 2 inches will be possible with locally higher amounts not out of the question. This could pose a hydro threat and flash flooding concerns. We will continue to eye the possibility as we work closer to the weekend and early next week.
Pleasant conditions will persist into Wednesday before cloud cover increases and leads to showers later Thursday. Enjoy the increasing temperatures through the next several days.
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