textproduct: Morristown

KEY MESSAGES

Updated at 141 PM EDT Tue Aug 25 2026 - Dry conditions with comfortable afternoon humidity levels continues this afternoon, and most locations will be dry Wednesday as well.

- Highest chances for showers and storms will be Thursday and Friday.

- Most locations should be dry for the weekend, but we will see a trend toward hotter conditions that will continue into the first part of the week.

DISCUSSION

Issued at 141 PM EDT Tue Aug 25 2026

The surface high pressure to our north that has been sponsoring our dry days and comfortable afternoon humidity levels will continue to extend into our area as it drifts slowly east this afternoon and tonight. Moisture will begin to increase Wednesday but most areas will remain rain free, with just some isolated to scattered afternoon convection expected especially over the eastern mountains.

Precipitation chances will increase for Thursday into Friday as multiple weak short waves move across and a weak surface front moves slowly toward and then into our area. Models have been struggling a lot with the details of these features, but right now it appears the front will push into our area Thursday night and is unlikely to move off to our to south and east until sometime Friday. Latest runs suggest short wave energy ahead of the front may have convection moving in during the early morning hours Thursday morning, and if this occurs clouds and precipitation could limit instability during the day Thursday. CAPE values currently look modest with limited shear Thursday into Friday, so the potential for organized severe storms still looks low. However, a few storms may produce strong gusty winds either day and locally heavy rainfall will also be possible.

Upper ridging and surface high pressure will build in by the weekend, with most areas expected to be dry. The NBM just has some low chances for afternoon showers and storms mainly in the mountains both Saturday and Sunday, with the limited precip chances continuing into the first part of the week. We will also see a gradual warming trend during the weekend into the first part of the week, with high temperatures likely to be in the 90s across most valley locations by Tuesday.

AVIATION

(18Z TAFS) Issued at 1226 PM EDT Tue Aug 25 2026

VFR conditions are expected for the period all sites. Winds will generally be light.

PRELIMINARY POINT TEMPS/POPS

Chattanooga Airport, TN 68 94 72 90 / 0 10 30 70 Knoxville McGhee Tyson Airport, TN 65 91 70 89 / 0 10 20 50 Oak Ridge, TN 64 91 69 88 / 0 10 20 60 Tri Cities Airport, TN 58 87 66 86 / 0 10 10 40

MRX WATCHES/WARNINGS/ADVISORIES

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