textproduct: Morristown

KEY MESSAGES

Updated at 1231 AM EST Thu Feb 26 2026

- Widespread rain will continue through at least the morning hours as a stationary boundary lingers. Most places will see at least 1 inch with some locations along and near Interstate 40 possibly seeing 2 inches or more.

- Dry and mild conditions return Friday through the weekend.

- Rain chances return again by early next week.

DISCUSSION

Issued at 1231 AM EST Thu Feb 26 2026

In the upper levels, a broad trough is over the Eastern U.S. At the surface, a stationary boundary across the region Wednesday night through Thursday will bring moderate to heavy rain at times. Stratiform rain has been intensifying on radar over the past couple of hours along and north of I-40. Moderate to heavy rain is upstream in Middle Tennessee moving east along and north of I-40. Rain will continue overnight as a stationary boundary lingers over the region. Rain will become more widespread overnight but the highest rain totals are expected along the I-40 corridor and northward, where up to 2 inches will be possible by midday Thursday. PWAT values are high around 1 inch through the morning hours, which is above the 90th percentile (0.77in according to sounding climatology). Some minor flooding issues like ponding on roadways and low lying areas cannot be ruled out. Thunder potential is low but the best chance is south of I-40. Rain will start to move out during the afternoon hours on Thursday.

The front will finally move through the region Thursday night bringing a slight drop in dew points Friday but not colder temperatures. Friday through the weekend looks dry with nearly zonal flow or weak troughing aloft with high pressure near the surface. Temperatures in the Tennessee Valley will be warmer this weekend with highs mainly in the 60s. Details are uncertain for next week but another chance for rain looks likely (best chance on Monday) with mild temps expected.

AVIATION

(12Z TAFS) Issued at 530 AM EST Thu Feb 26 2026

Will see rain and MVFR/IFR conditions continue all sites through the morning, with the rain ending by early afternoon followed by gradual improvement in conditions. May see VFR conditions by late in the day. Fog will be possible late especially TYS and TRI, but confidence in the details is low and will just include MVFR vsby both sites for now.

PRELIMINARY POINT TEMPS/POPS

Chattanooga Airport, TN 67 45 68 44 / 90 20 0 0 Knoxville McGhee Tyson Airport, TN 60 43 64 41 / 90 10 0 0 Oak Ridge, TN 61 42 65 40 / 90 10 0 0 Tri Cities Airport, TN 54 37 61 38 / 90 10 0 0

MRX WATCHES/WARNINGS/ADVISORIES

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