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 118 PM EDT Tue Oct 20 2026

- Dry weather dominates the forecast period, with cool mornings and pleasant afternoons each day. Afternoon relative humidity will remain on the lower side as well.

DISCUSSION

Issued at 118 PM EDT Tue Oct 20 2026

Morning fog along rivers and lakes will be possible again late tonight as cold air moves over warm waters. This will probably repeat each morning for the next several days. Otherwise, we will have dry and sunny weather for the remainder of the week as a large mid/upper ridge builds to our west in a blocking pattern, and gradually shifts east.

One adjustment to the forecast grids will be to lower dewpoints, which have been too high in the NBM today. Went with NBM 10th precentile for the daytime hours through Friday.

AVIATION

(18Z TAFS) Issued at 118 PM EDT Tue Oct 20 2026

No aviation impacts are forecast this period. There may be some fog near the area rivers and lakes, but the chance of fog at the terminals appears too low to mention at this time.

PRELIMINARY POINT TEMPS/POPS

Chattanooga Airport, TN 49 76 49 75 / 0 0 0 0 Knoxville McGhee Tyson Airport, TN 46 76 45 74 / 0 0 0 0 Oak Ridge, TN 47 76 46 75 / 0 0 0 0 Tri Cities Airport, TN 40 74 40 72 / 0 0 0 0

MRX WATCHES/WARNINGS/ADVISORIES

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

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