787 FXUS64 KOHX 171135 AFDOHXArea Forecast Discussion National Weather Service Nashville TN 635 AM CDT Wed Sep 17 2025
...New AVIATION...
.KEY MESSAGES... Updated at 631 AM CDT Wed Sep 17 2025
- A few isolated showers and storms tonight, but most of Middle TN will be rain-free. Patchy dense fog is likely overnight in areas that received rain.
- Afternoon highs remain a few degrees above normal this week with temperatures in the 80s to mid 90s.
- Low rain chances (15-30%) over the weekend into early next week, with a slight decreasing trend in temperatures.
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.SHORT TERM... (Tonight through Thursday Night) Issued at 1042 PM CDT Tue Sep 16 2025
If you got rain today, it`s pretty steamy out there. The 00Z balloon launch revealed a stark temperature inversion just off the surface, so we could certainly see some fog tonight. Best chances for areas of patchy dense fog development will be over areas that received rain today which includes a large chunk of the northeast quadrant of our CWA. Do still see some clouds over the area that are pushing off of the low to our east, but assuming those clear out, watch out for fog overnight.
Our winds will shift out of the northeast by late Wednesday morning, ushering in drier air, and thus limiting rain/storm chances tomorrow. More of the same can be expected Thursday with temperatures ever so slightly higher as the ridge aloft continues its push east.
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.LONG TERM... (Friday through next Wednesday) Issued at 1042 PM CDT Tue Sep 16 2025
Friday will be our hottest day this week as the ridge moves directly overhead with widespread afternoon temperatures in the mid 90s east of the Plateau (mid to upper 80s there). It still looks like Friday, although hot, will be dry most of the day, so hopefully evening ballgames can commence without interruptions from the weather. It is worth noting that some models are showing rain/shower chances picking up Friday night as troughing from the midwest builds in, but will have a better idea once we are in viewing range of higher-res models. With the trough moving in, lower heights are currently off to our north, meaning Saturday will still likely be hot and mostly dry, but with an increase in cloud cover and perhaps some showers. Euro ensembles are currently giving a 50% chance of at least a hundredth of an inch of rain, mainly across the western half of the CWA. The trough will dip lower into the area Sunday, bringing a low 20% of rain and storms with temperatures just a few degrees cooler in the upper 80s. Moving into next week, troughing will remain the dominant synoptic feature that influences our weather. This will help to slightly regulate temperatures back into the mid to upper 80s and also provide more opportunities for rain. Low rain chances between 15% to 20% are in the forecast each day beyond Saturday.
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.AVIATION... (12Z TAFS) Issued at 631 AM CDT Wed Sep 17 2025
Patchy fog is dissipating this morning across Middle TN. VFR conditions prevail with few/scattered mid to high level clouds. Chances of showers and thunderstorms are very low over the next 24 hours. Winds remain light through the TAF period. For this evening, not expecting any widespread fog to develop through the overnight.
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.PRELIMINARY POINT TEMPS/POPS... Nashville 92 64 93 65 / 0 0 0 0 Clarksville 94 62 95 63 / 0 0 0 0 Crossville 81 56 83 58 / 0 0 0 0 Columbia 91 62 92 63 / 10 10 0 0 Cookeville 84 59 86 61 / 0 0 0 0 Jamestown 82 58 85 59 / 0 0 0 0 Lawrenceburg 89 62 90 62 / 10 10 0 0 Murfreesboro 91 61 92 63 / 0 0 0 0 Waverly 92 64 93 65 / 0 0 0 0
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.OHX WATCHES/WARNINGS/ADVISORIES... None. &&
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SHORT TERM...Baggett LONG TERM....Baggett AVIATION.....Cravens
NWS OHX Office Area Forecast Discussion