textproduct: Morristown

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KEY MESSAGES

Updated at 133 AM EDT Thu Sep 24 2026

- Isolated to scattered light rain showers again today. No significant weather expected.

- Cooler and drier conditions are expected through the weekend before a warming trend early next week.

DISCUSSION

Issued at 133 AM EDT Thu Sep 24 2026

The bottom end of the upper trough will be swinging over the southern Appalachians today on its way to its rendezvous with the coastal storm. This should help initiate some additional rain showers, mainly in the morning hours but cannot rule out an isolated shower in the afternoon. Cannot rule out thunder with today's activity, but if any bark occurs not expecting a bite. Next few mornings starting Friday morning will be pleasantly cool, and a few lucky souls in southwest VA or far northeastern TN may see temperatures dip below 40F! For example, there's a 30% chance of this occurring per the NBM at both Mountain City and Glade Spring.

Trough quickly ejects offshore as we head into the weekend and backside flow means we should be dry, pleasantly warm but comfortable with low afternoon RH values, and enjoying a good entrance into normal early fall weather for the MidSouth. Rain chances don't look to return until next Wednesday when both major models agree that a classic fall longwave trough will march from west to east across the CONUS. GFS is doing its usual too speedy bias, but NBM increases rain chances Wednesday to end the forecast and the month of September.

AVIATION

(06Z TAFS) Issued at 133 AM EDT Thu Sep 24 2026

Shower chances will taper off shortly after issuance with sites varying from VFR to IFR cigs. Most sites should transition to solid MVFR as low stratus builds in overnight. Brief stints at IFR is likely, but doubtful to prevail. Some fog may develop, but light winds should keep some mixing and limit it. A slow return to VFR as cigs gradually increase and scatter by mid-afternoon Thursday. A non-zero chance for some additional showers around daybreak and opted for a PROB30 at TYS.

PRELIMINARY POINT TEMPS/POPS

Chattanooga Airport, TN 80 61 80 56 / 30 20 0 0 Knoxville McGhee Tyson Airport, TN 76 58 75 52 / 40 0 0 0 Oak Ridge, TN 76 57 76 51 / 40 0 0 0 Tri Cities Airport, TN 70 49 72 44 / 30 0 0 0

MRX WATCHES/WARNINGS/ADVISORIES

NC...NONE. TN...NONE. VA...NONE.

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