textproduct: Morristown

This forecast discussion was created in the public domain by the National Weather Service. It can be found in its original form here.

KEY MESSAGES

Updated at 721 AM EDT Mon Oct 19 2026

- Chilly starts to the day with some patchy frost possible over the next couple of mornings.

- Dry weather dominates the rest of this week with a warming trend. Humidity remains on the lower side.

DISCUSSION

Issued at 136 AM EDT Mon Oct 19 2026

Another chilly morning this morning, but with slight improvement in readings by a couple of degrees or so. Dry air and calm conditions will allow areas of frost for parts of the mountains, plateau, and northeast TN into southwest VA again.

For the week ahead, longwave troughing will remain well into Canada with ridging poking north between a closed upper low off of the Mid- Atlantic and another closed low off of the west coast. The western low eventually phases with the mean flow, meanwhile the Atlantic one that will bring coastal issues to parts of the Eastern Seaboard due to hardly any movement, will become enveloped and shunted east towards the end of the week. No impacts here except persistent upper level ridging and surface high pressure.

Highs breaking 70 return for much of the valley later this afternoon. Highs will then remain in the low to mid 70s range the rest of the forecast period into next weekend. A general wash/rinse/repeat each day with light winds, mostly sunny/clear skies, low humidity, and no precipitation for at least the foreseeable future.

AVIATION

(12Z TAFS) Issued at 721 AM EDT Mon Oct 19 2026

River fog formed this morning along the mainstem Tennessee River and a handful of tributaries. Fog should quickly dissipate with the morning sun, so only kept a brief TEMPO in at TYS where fog was observed earlier and TDOT cameras still depict fog nearby. Otherwise VFR and dry weather with light winds to continue as high pressure dominates the region.

PRELIMINARY POINT TEMPS/POPS

Chattanooga Airport, TN 71 46 72 48 / 0 0 0 0 Knoxville McGhee Tyson Airport, TN 72 43 74 44 / 0 0 0 0 Oak Ridge, TN 73 44 74 45 / 0 0 0 0 Tri Cities Airport, TN 72 38 73 39 / 0 0 0 0

MRX WATCHES/WARNINGS/ADVISORIES

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

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