textproduct: Morristown

KEY MESSAGES

Updated at 728 PM EDT Fri Aug 21 2026 - This afternoon and evening, scattered showers and storms are expected in Northeast Tennessee, Southwest Virginia and the East Tennessee Mountains. Elsewhere, showers and storms will be more isolated. - Mostly dry conditions with near normal temperatures through the weekend and early next week.

DISCUSSION

Issued at 225 PM EDT Fri Aug 21 2026

Cu have developed across the region. Scattered showers have popped up along the TN/KY border - these should gradually drift eastward over the afternoon hours. Additional showers and storms develop this afternoon with coverage limited to isolated to widely scattered at best. Storm motions will vary given weaker flow aloft. Any outflow boundaries could spawn additional showers and storms. Severe weather is not expected this afternoon, but brief downpours and gusty winds will be possible with any passing shower. An isolated severe wind report cannot be ruled out. We'll dry out after sunset with winds becoming calm. The development of patchy dense fog is likely in low lying areas & locations near bodies of water. Temperatures will top out this afternoon near normal, in the 80s, with cooler/drier air on tap for the upcoming weekend.

We get a brief break from the excessive humidity this weekend into early next week. Mostly dry and seasonable temperatures on are tap for Saturday and Sunday as a sfc high pressure builds into the region. This high pressure will usher in drier air from the north- central NOAM. Temperatures gradually rebound back toward normal mid- week. That means the return of more humid weather & rain chances too. Northwesterly flow aloft will provide a continuous flow of weak shortwaves mid-week through the end of the work week. The NBM PoPs are generally 20-40 percent range next Wednesday thru Friday, peaking in the afternoon hours, but not widespread rain event on the horizon.

AVIATION

(00Z TAFS) Issued at 728 PM EDT Fri Aug 21 2026

Isolated showers and storms are dissipating in the TN Valley. Showers and storms are holding together in SW Virginia near TRI but are expected to dissipate in the next few hours. With clearing skies overnight, fog development is a concern especially near TRI where fog may be dense in the early morning hours. Any fog will dissipate shortly after sunrise tomorrow morning. Tomorrow will be dry, except for possibly some isolated showers and storms near TRI in the evening.

PRELIMINARY POINT TEMPS/POPS

Chattanooga Airport, TN 70 93 68 91 / 0 0 10 0 Knoxville McGhee Tyson Airport, TN 69 89 66 86 / 20 10 20 0 Oak Ridge, TN 68 90 64 87 / 10 10 10 0 Tri Cities Airport, TN 65 84 63 81 / 30 20 30 0

MRX WATCHES/WARNINGS/ADVISORIES

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