textproduct: Morristown

KEY MESSAGES

Updated at 1219 PM EDT Sun Aug 23 2026 - Dry conditions with more comfortable humidity levels through Tuesday.

- Shower and thunderstorm chances will return Wednesday and Thursday.

DISCUSSION

Issued at 1216 AM EDT Sun Aug 23 2026

The cold front is currently on our doorstep over Eastern Kentucky and the Cumberland Plateau on the latest analysis. Showers and storms are currently isolated but new activity is popping up in the foothills of the East Tennessee mountains. CAMs and the NBM agree that showers and storms will dissipate by 1 or 2 AM EDT. Confidence is increasing that clouds will clear out before sunrise and fog will likely be an issue this morning. The front will move through tonight bringing cooler temps and lower dew points today and tomorrow. Sunday and Monday dew points will be in the 50s and highs will be in the 80s (Chattanooga area may hit 90-91).

Sunday through Tuesday will be dry with high pressure at the surface. The upper level pattern will be about the same with a deep trough on the East Coast and a ridge centered over the Rockies.

The NBM has low rain chances Wednesday increasing to 40-60% chances by Thursday. The trough will be centered over the Ohio Valley again by midweek with a shortwave rotating through the pattern on Thursday.

AVIATION

(18Z TAFS) Issued at 1219 PM EDT Sun Aug 23 2026

The primary aviation weather concern is the potential for fog development late tonight especially TRI. Right now the potential for significant fog looks too low to include as prevailing, but will include a few hours of tempo MVFR vsby in fog around sunrise at TRI. Otherwise, a VFR forecast for the period all sites.

PRELIMINARY POINT TEMPS/POPS

Chattanooga Airport, TN 65 90 65 91 / 0 0 0 0 Knoxville McGhee Tyson Airport, TN 62 86 61 88 / 0 0 0 0 Oak Ridge, TN 61 86 60 88 / 0 0 0 0 Tri Cities Airport, TN 57 81 55 84 / 0 0 0 0

MRX WATCHES/WARNINGS/ADVISORIES

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