textproduct: Morristown

KEY MESSAGES

Updated at 704 AM EDT Sat Oct 17 2026

- Showers this morning will linger over the mountains before ending. Snow may mix in over the higher mountain peaks. - Much cooler and drier air is moving in and the first frost of the season will likely occur tonight across portions of the area, with frost possible again Sunday night.

- Dry with a warming trend next week.

DISCUSSION

Issued at 151 AM EDT Sat Oct 17 2026

Following the cold frontal passage last night, we are currently seeing drizzle or light showers across parts of the forecast area this morning. Anywhere from a trace to just over a tenth of an inch accumulation possible. Isolated to scattered northwesterly flow activity may persist over the higher terrain of the northern plateau, southwest VA, and the Southern Appalachians through the morning. Before everything comes to an end, light snow showers may mix in over the highest mountain peaks of the Southern Appalachians with the coldest temperatures of the morning.

Today may be a shock to the system for some to go from record setting temperatures yesterday to highs mostly in the 50s later today. Dew points will drop to the 30 to 40 degree range. Later this afternoon, northerly winds will mix down and bring gusts up to around 25 mph for parts of the area. So prepare for a breezy day at times. Tonight may be the coldest night we've seen in quite a while with temperatures ranging from the low 30s over the higher terrain to upper 30s and low 40s for the central and southern valley. Winds are expected to die down tonight, 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 tomorrow afternoon and frost potential into Monday morning, with increasing heights aloft following the deep trough rolling out. The rest of the 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 next week.

AVIATION

(12Z TAFS) Issued at 704 AM EDT Sat Oct 17 2026

TRI and TYS may linger near MVFR for a few more hours this morning, but gradual improvement in CIGs is the expectation for the day. CHA is unlikely to see MVFR conditions, despite the current cloud deck. Gusty surface winds of 20 to 25 knots are likely during the late morning through the afternoon hours. Skies should gradually scatter and then clear by late afternoon.

PRELIMINARY POINT TEMPS/POPS

Chattanooga Airport, TN 63 43 67 42 / 0 0 0 0 Knoxville McGhee Tyson Airport, TN 59 40 66 40 / 0 0 0 0 Oak Ridge, TN 59 40 66 39 / 0 0 0 0 Tri Cities Airport, TN 55 34 66 34 / 10 0 0 0

MRX WATCHES/WARNINGS/ADVISORIES

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