textproduct: Morristown

KEY MESSAGES

Updated at 229 PM EDT Sun Aug 9 2026

- Showers and thunderstorms will be around each day through next Saturday, with the afternoons generally the period of most activity.

- There will be potential for a few storms to become strong to severe each afternoon with damaging winds and localized flooding the main threats.

- Temperatures will be generally not be far either side of normal for this time of year.

DISCUSSION

Issued at 229 PM EDT Sun Aug 9 2026

Scattered showers and storms are ongoing and will continue into this evening. The overall threat of severe weather is quite low, but a few strong storms are certainly still possible. The bigger threat to watch out for through this evening will be localized flooding. The main areas to watch will be east of I-75, especially across the East TN mountains and foothills, as well as southwest NC and VA. These are the areas that the HRRR have shown to have the best coverage of convection through this evening. Any areas that see repeated rounds of convection will be at greatest risk to see flooding.

Monday looks drier as we get some northerly flow in the mid to upper levels on the backside of a weak shortwave. The only caveat is if an upstream MCS, across the Ohio River Valley, can propagate far enough south to make it into our area, mainly southwest VA. 12Z run of the HRRR shows a decaying MCS moving across southwest VA by late morning/early afternoon. So this will be something to keep an eye on, but otherwise drier for most areas on Monday.

Tuesday through Saturday features a more pronounced northwest flow pattern across our area. This pattern during this time of year typically favors increased chances of seeing an MCS across the area. While the pattern is conducive, predicting the when and the where are very difficult. Bottom line, increased chances for showers and storms Tuesday through Saturday. At some point during this timeframe, at least one MCS, or a remnant, seems probable to impact our area. Stay tuned.

Beyond Saturday, models are showing the ridge of high pressure shifting east. This takes us out of the northwest flow pattern and would lead to drier and hotter conditions.

AVIATION

(18Z TAFS) Issued at 114 PM EDT Sun Aug 9 2026

Mostly VFR conditions are expected through the first half of the period, aside from any brief MVFR conditions due to passing showers/storms. Then, VFR overnight at TYS and CHA but MVFR FOG at TRI. Winds should be light and less than 10 knots, and generally out of the southwest.

PRELIMINARY POINT TEMPS/POPS

Chattanooga Airport, TN 73 92 73 92 / 10 40 10 40 Knoxville McGhee Tyson Airport, TN 72 90 73 91 / 10 20 10 40 Oak Ridge, TN 71 90 72 91 / 10 30 20 40 Tri Cities Airport, TN 68 87 69 86 / 10 30 20 50

MRX WATCHES/WARNINGS/ADVISORIES

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