textproduct: Morristown

KEY MESSAGES

Updated at 734 AM EDT Sun Oct 18 2026

- Cool start to the week with areas of frost this morning and again tonight for portions of the Cumberland Plateau, southwest Virginia, northeast Tennessee, and the mountains.

- Dry weather dominates the rest of this week with a warming trend.

DISCUSSION

Issued at 131 AM EDT Sun Oct 18 2026

This morning may hold the coldest lows of the forecast with temperatures ranging from the low 30s over the higher terrain to upper 30s and low 40s for the central and southern valley. Winds have calmed under surface high pressure, which will provide the ripe environment for frost development. Frost is likely for portions of the northern plateau, Southern Appalachians, northeast TN, and southwest VA.

Slight improvement in temperatures for this afternoon and frost potential into tomorrow morning, with increasing heights aloft following the deep trough exiting to the east. Winds will be much calmer compared to yesterday. Much of the coming week synoptically can be characterized by omega blocking over the CONUS; troughing over the coasts and ridging in the middle of the country. Dry weather will continue through the rest of the forecast period with temperatures eventually rising to a few degrees above normal.

AVIATION

(12Z TAFS) Issued at 734 AM EDT Sun Oct 18 2026

VFR TAFs with light winds under high pressure expected to remain predominant through the period. Clear skies and dry weather.

PRELIMINARY POINT TEMPS/POPS

Chattanooga Airport, TN 68 43 70 46 / 0 0 0 0 Knoxville McGhee Tyson Airport, TN 68 41 71 42 / 0 0 0 0 Oak Ridge, TN 66 41 71 42 / 0 0 0 0 Tri Cities Airport, TN 66 36 70 36 / 0 0 0 0

MRX WATCHES/WARNINGS/ADVISORIES

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