Area Forecast Discussion
Issued by NWS Knoxville/Tri Cities, TN
Issued by NWS Knoxville/Tri Cities, TN
912 FXUS64 KMRX 111933 AFDMRX Area Forecast Discussion National Weather Service Morristown TN 333 PM EDT Thu Sep 11 2025 ...New UPDATE... .UPDATE... Issued at 323 PM EDT Thu Sep 11 2025 Some showers have developed in the Cumberland Plateau and near Southwest Virginia and Northeast Tennessee where a robust CU field can be seen on satellite. This activity will last a few hours and dissipate before sunset. && .DISCUSSION... Issued at 129 PM EDT Thu Sep 11 2025 Key Messages: 1. Mostly clear and dry conditions continue through the weekend with high pressure in control. 2. Gradual warming trend into the weekend. This weekend and early next week will have above normal temps. 3. A slight chance for afternoon showers and storms early next week mainly in the higher elevations of the East Tennessee mountains. Discussion: Dry weather will continue through at least the weekend as high pressure remains in place. Some fog will be possible in the morning hours mainly near rivers and lakes. Starting Friday, a ridge will build into the Mississippi and Tennessee Valleys. This ridge will remain in place through at least the weekend, bringing a warming trend. Above normal temperatures are expected this weekend and early next week with highs in the upper 80s for most of the Tennessee Valley by Monday and Tuesday. By early next week, a trough will form and linger over the Mid- Atlantic. There will be a slight chance for afternoon showers and storms early next week mainly in the higher elevations of the East Tennessee mountains. Overall, rain chances will remain low. && .AVIATION... (18Z TAFS) Issued at 129 PM EDT Thu Sep 11 2025 VFR conditions will prevail. There is a chance for patchy fog in the morning hours mainly near TRI but confidence is too low to include in the TAF at this time. Winds will be light and northerly. && .PRELIMINARY POINT TEMPS/POPS... Chattanooga Airport, TN 63 87 59 88 / 0 0 0 0 Knoxville McGhee Tyson Airport, TN 59 84 57 84 / 0 0 0 0 Oak Ridge, TN 59 84 57 85 / 0 0 0 0 Tri Cities Airport, TN 52 80 54 82 / 0 0 0 0 && .MRX WATCHES/WARNINGS/ADVISORIES... NC...NONE. TN...NONE. VA...NONE. && $$ DISCUSSION...McD AVIATION...McD