Area Forecast Discussion
Issued by NWS Knoxville/Tri Cities, TN
Issued by NWS Knoxville/Tri Cities, TN
075 FXUS64 KMRX 240520 AFDMRX Area Forecast Discussion National Weather Service Morristown TN 120 AM EDT Mon Aug 24 2026 ...New DISCUSSION, AVIATION... .KEY MESSAGES... Updated at 114 AM EDT Mon Aug 24 2026 - Dry conditions with more comfortable humidity levels through Tuesday. - Shower and thunderstorm chances will return Wednesday and especially Thursday. && .DISCUSSION... Issued at 114 AM EDT Mon Aug 24 2026 In the upper levels, a deep trough remains over the East Coast as a ridge stays centered over the Rocky Mountains. Temperatures will be cooler this morning with lows in the 60s for most of the Tennessee Valley and in the 50s in Northeast Tennessee, Southwest Virginia and the higher elevations. Some patchy fog will be possible mainly near bodies of water. Today and tomorrow will be dry with low humidity as high pressure remains over the Ohio Valley. Highs will be in the 80s for most of the Tennessee Valley, sorry Chattanooga (90-92). Dew points will be pleasant in the 50s at times. Rain chances start to increase on Wednesday as a shortwave moves into the Great Lakes Region. At the surface, a stationary boundary will likely be over the Southeast U.S., bringing a chance for showers and storms Wednesday evening and into the overnight hours. Thursday afternoon will have the highest rain chances as a shortwave moves through the Ohio Valley. Friday through the weekend looks mostly dry as the trough weakens. Some afternoon showers and storms will be possible mainly near the mountains and foothills. && .AVIATION... (06Z TAFS) Issued at 114 AM EDT Mon Aug 24 2026 Patchy fog again possible early this morning, but lower confidence of occurrence this morning on account of the drier airmass in place. Fog should be fairly isolated around fog-prone locations. Post sunrise clearing any fog out, the remainder of the day is dry with VFR conditions and light winds under high pressure. && .PRELIMINARY POINT TEMPS/POPS... Chattanooga Airport, TN 91 65 92 67 / 0 0 0 0 Knoxville McGhee Tyson Airport, TN 87 61 88 64 / 0 0 0 0 Oak Ridge, TN 87 61 88 63 / 0 0 0 0 Tri Cities Airport, TN 83 56 84 60 / 0 0 0 0 && .MRX WATCHES/WARNINGS/ADVISORIES... NC...NONE. TN...NONE. VA...NONE. && $$ DISCUSSION...McD AVIATION...Wellington