Area Forecast Discussion
Issued by NWS Knoxville/Tri Cities, TN

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000 FXUS64 KMRX 210726 AFDMRX Area Forecast Discussion National Weather Service Morristown TN 326 AM EDT THU JUL 21 2016 .SHORT TERM (Today and Tonight)...
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Moisture will again be limited over much of the forecast today with the suppressing influence of a large ridge of high pressure covering much of the eastern half of the nation. Moisture will be a little deeper across the southern third of the forecast including Southeast Tennessee and Southwest North Carolina. If a thunderstorm occurs in this region it will most likely be limited mainly to the higher terrain on the Cumberland Plateau and along the North Carolina border. It will be another hot day with highs several degrees above normal. Convection should fade away through the early evening with clear to partly cloudy skies through the rest of the overnight hours. .LONG TERM (Friday through Wednesday)...The large mid/upper level ridge over the Plains will continue to dominate the weather pattern through the end of the week. A ridge axis will extend east across TN on Friday, which should limit convective potential to mainly the mountains and SW NC. The models are in agreement that a shortwave trough will move across New England and the Central Appalachians on Friday night/Saturday, with convection on the tail end of the trough tracking from OH into our northern sections. This should bring some scattered showers/t-storms to that area on Saturday. The ridge weakens slightly across our area on Sunday, which may allow for more widespread showers and t-storms. Another shortwave trough passes to our north on Monday, pushing a front toward the area. With the potential for a boundary nearby, the chance for precip will be trending upward for the beginning of the next work week. Hot temperatures continue through the weekend, with heat indices of 100 to 105 possible in the TN Valley. Increasing precip chances and cloud cover may bring slightly lower temps by Monday, but still above normal.
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&& .POINT TEMPS/POPS...
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Chattanooga Airport, TN 97 74 97 75 / 20 30 20 10 Knoxville McGhee Tyson Airport, TN 94 72 94 73 / 20 20 10 10 Oak Ridge, TN 95 72 95 73 / 20 10 10 10 Tri Cities Airport, TN 91 65 93 68 / 10 10 10 10
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&& .MRX WATCHES/WARNINGS/ADVISORIES... NC...None. TN...None. VA...None. && $$

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